Tag Archives: Voron

MissChanger Klipper Configuration – Part 2

Posted 31 October 2025

Last night I was able to verify that ‘klippy.log’ contains the entire in-lined configuration, after all includes and before parsing at the top of each entry. This should go a long way toward effective troubleshooting of the ‘No LEDs’ problem. However, when I started the process of implementing the Grok-suggested changes, I discovered that my printer will no longer connect to nhk0 or nhk1. I get the dreaded “mcu ‘nhk1’: Unable to connect” and/or “mcu ‘nhk0’: Unable to connect” error(s). Since I haven’t made any hardware changes this is kinda hard to believe, and at least so far I’m convinced this is yet another software-induced issue.

So, I plan to go back to my 251025 configuration (251025_wt_dock_printer.cfg & 251003_T0-Nitehawk-Revo-LDO.cfg). Yep! this configuration setup worked perfectly – no errors, and the restart was very rapid (maybe 2-5 seconds). LEDs on T0 also worked.

01 November 2025 Update:

After spending way too much time chasing the issue with LEDs not working on the T1(red) toolhead, I think I’m back going again. Again I’m starting with the following single-toolhead configuration:

251025_wt_dock_printer.cfg (printer.cfg with ‘with dock’ contents below the SAVE_CONFIG line)
251003_T0-Nitehawk-Revo-LDO.cfg

I modified printer.cfg in MainSail to change the max_y value for QGL from 225 to 275, and then ran SAVE_CONFIG_MODE to copy the changes to the ‘config_wt_dock.cfg’. This gives QGL a wider range of positions and should result in better gantry levelling in the ‘with-dock’ configuration.

I rechecked the x & y parking values for T0 and then ran TEST_DOCKING. The docking test went very well – very smooth, no hitches at all. An interesting note about TEST_DOCKING; if a recent HOME_ALL/QGL hasn’t been accomplished, it does another set before actually doing the docking moves.

Per recommendation from Grok I also added ‘[gcode_macro STATUS_MSG]’ to the top of printer.cfg to implement dual-destination logging – both to the status line and to the console log so I can see the full range of activity. The full macro is:

[respond]
default_type: echo

#11/01/25 added to direct output to both the status line and the console
[gcode_macro STATUS_MSG]
description: LCD + instant console log (NO TIME - WORKS 100%)
gcode:
    {% set msg  = params.MSG|default("") %}
    {% set type = params.TYPE|default("echo") %}
    {% set tool = params.TOOL|default(printer.tool_probe_endstop.active_tool_number|int) %}
    {% set tool = (tool|int if tool != -1 else 0)|string %}
    {% if msg == "" %}
      { action_raise_error("STATUS_MSG: Missing MSG=") }
    {% endif %}

    M117 T{tool}: {msg}
    RESPOND TYPE={type} MSG="T{tool}: {msg}"

[respond]

default_type: echo

#11/01/25 added to direct output to both the status line and the console

[gcode_macro STATUS_MSG]

description: LCD + instant console log (NO TIME - WORKS 100%)

gcode:

{% set msg = params.MSG|default("") %}

{% set type = params.TYPE|default("echo") %}

{% set tool = params.TOOL|default(printer.tool_probe_endstop.active_tool_number|int) %}

{% set tool = (tool|int if tool != -1 else 0)|string %}

{% if msg == "" %}

{ action_raise_error("STATUS_MSG: Missing MSG=") }

{% endif %}

M117 T{tool}: {msg}

RESPOND TYPE={type} MSG="T{tool}: {msg}"

and it gets called like this:

STATUS_MSG MSG="Heating T1" TYPE=echo     # Green console
STATUS_MSG MSG="ERROR: Timeout!" TYPE=error  # Red `!!

1 2	STATUS_MSG MSG="Heating T1" TYPE=echo # Green console STATUS_MSG MSG="ERROR: Timeout!" TYPE=error # Red `!!

Note that to make outputs from a STATUS_MSG command immediately visible in the console window in, the standard console filter “Hide Temperatures” must be disabled, and a new filter added to suppress the status messages that are emitted by the ‘STATUS’ line at the end of the STATUS_MSG macro (the STATUS line is required to force a console window update). Interestingly, the ‘Hide Temperatures’ filter is supposed to suppress the 1-2 second period temp reports, but disabling this filter still doesn’t result in a blizzard of temp reports. From Grok:

Why No Automatic Temps in Console?Klipper Design: Klipper doesn't "spam" real-time temperature updates to the console tab (which is primarily for G-code commands/responses and explicit messages like RESPOND/M118). Instead:Periodic stats (including temps) are logged to klippy.log (every ~1 second when active, like during heating).
Temps only appear in the console when explicitly queried (e.g., via M105) or during certain events (e.g., heating errors).

UI Role: The Console tab in Fluidd/Mainsail shows interactive G-code output, not the full backend log. The "Hide Temperatures" filter only affects M105-like responses (hiding them to reduce clutter), but since no automatic reports are sent, disabling it won't "unlock" them.

Why No Automatic Temps in Console?Klipper Design: Klipper doesn't "spam" real-time temperature updates to the console tab (which is primarily for G-code commands/responses and explicit messages like RESPOND/M118). Instead:Periodic stats (including temps) are logged to klippy.log (every ~1 second when active, like during heating).

Temps only appear in the console when explicitly queried (e.g., via M105) or during certain events (e.g., heating errors).

UI Role: The Console tab in Fluidd/Mainsail shows interactive G-code output, not the full backend log. The "Hide Temperatures" filter only affects M105-like responses (hiding them to reduce clutter), but since no automatic reports are sent, disabling it won't "unlock" them.

So I’m happy with the current setup; ‘Hide Temperatures’ filter OFF, ‘Hide Klipper State’ OFF, ‘STATUS’ line removed from STATUS_MSG macro.

02 November 2025 Update:

I saved the three files relevant to the STATUS_MGS macro adventure to a folder named

‘20251102-141756 STATUS_MSG Macro Files’ in the MissChanger/Config Files folder, so now I can start moving forward again toward dual-toolhead nirvana. I plan to do this as follows:

Add [include 251029_T1-Nitehawk-Revo-LDO.cfg] to printer.cfg just before the SAVE_CONFIG section. this file in turn includes 251002_T1_stealthburner_leds.cfg

OK, this came up OK, And now both ‘T0’ and ‘T1’ are available in the ‘Extruder’ tab in the dashboard – yay! From Klippy.log I can see that the T0/T1 include files have been properly in-lined into printer.cfg, along with the T0/T1 neopixel LED files, with NO errors. It’s really nice being able to see the entire config chain in one file.

Looking at klippy.log, I see the following ‘parking’ positions for T0 & T1:

T0: params_park_x = 69.00, params_park_y = 90.00, params_park_z = 250.0
T1: params_park_x = 245.0, params_park_y = 91.50, params_park_z = 250.0

These values should be pretty close to correct for tool changes. I have already verified that T0 can be docked and undocked using TEST_DOCKING, but I still need to re-verify the values for T1.

03 November 2025 Update:

At the moment, neither toolhead has been selected, so I’m going to manually swap T0 out (docked), and T1 in (place it on the carrier), and then command a HOME_ALL (G28). This *should* cause T1 to be detected as the active toolhead. Yes!! T1 was detected as the active toolhead. Wow! I actually knew something!

OK, now I’m going to re-verify the parking positions using manual moves, and then I’m going to try TEST_DOCKING. WooHoo! Test Docking on T1 worked, and now I can even change toolheads under program control, as shown in the following short videos:

Docking test with the TEST_DOCKING macro

Demonstrating the ability to change back and forth between T0 & T1

Now that I have tool changing working, I think we are about done with the hardware configuration aspects of the MissChanger mod. I think the next step is to get Prusa Slicer configured to handle dual extruders, and get some test prints going – woo hoo!

Went back through MissChanger’s Prusa Slicer settings, so I think I have this correct. Tried a T1 test print with ‘251103_T1_Strap tensioner optimized_v003.gcode’, but it failed with the error ‘Error evaluating ‘gcode_macro PRINT_START:gcode’: jinja2.exceptions.UndefinedError: ‘dict object’ has no attribute ‘BED‘

I’m thinking that this error is yet another instance of my old single-toolhead PRINT_START macro not being able to handle multiple toolheads.

Grok agreed, and proposed the following PRINT_START macro upgrade:

[gcode_macro PRINT_START]
description: Multi-tool start (heat active extruder + bed/chamber)
gcode:
    {% set TOOL = printer.toolchanger.tool_number|int %}  # Active tool
    {% set EXTRUDER = 'extruder' + (TOOL if TOOL > 0 else '') %}  # 'extruder' (T0) or 'extruder1' (T1)
    {% set BED = params.BED|default(60)|int %}  # Default 60 if missing
    {% set EXTRUDER_TEMP = params.EXTRUDER|default(200)|int %}  # Default 200
    {% set CHAMBER = params.CHAMBER|default(0)|int %}  # Default 0 (off)

    STATUS_MSG MSG="PRINT_START: T{TOOL} Bed={BED} Extruder={EXTRUDER_TEMP} Chamber={CHAMBER}" TYPE=echo

    G28  # Home
    BED_MESH_CLEAR
    QUAD_GANTRY_LEVEL  # Level

    # Heat Bed
    SET_HEATER_TEMPERATURE HEATER=heater_bed TARGET={BED}
    TEMPERATURE_WAIT SENSOR=heater_bed MINIMUM={BED-2} MAXIMUM={BED+2}

    # Heat Active Extruder
    SET_HEATER_TEMPERATURE HEATER={EXTRUDER} TARGET={EXTRUDER_TEMP}
    TEMPERATURE_WAIT SENSOR={EXTRUDER} MINIMUM={EXTRUDER_TEMP-2} MAXIMUM={EXTRUDER_TEMP+2}

    # Chamber (if >0)
    {% if CHAMBER > 0 %}
        STATUS_MSG MSG="Heating Chamber to {CHAMBER}"
        # Use chamber heater/fan logic (add your chamber macro if needed)
        M141 S{CHAMBER}  # Or your chamber heat command
        TEMPERATURE_WAIT SENSOR=chamber MINIMUM={CHAMBER-2} MAXIMUM={CHAMBER+2}
    {% endif %}

    BED_MESH_CALIBRATE  # Mesh
    G90  # Absolute

    STATUS_READY  # LEDs ready!

[gcode_macro PRINT_START]

description: Multi-tool start (heat active extruder + bed/chamber)

gcode:

{% set TOOL = printer.toolchanger.tool_number|int %} # Active tool

{% set EXTRUDER = 'extruder' + (TOOL if TOOL > 0 else '') %} # 'extruder' (T0) or 'extruder1' (T1)

{% set BED = params.BED|default(60)|int %} # Default 60 if missing

{% set EXTRUDER_TEMP = params.EXTRUDER|default(200)|int %} # Default 200

{% set CHAMBER = params.CHAMBER|default(0)|int %} # Default 0 (off)

STATUS_MSG MSG="PRINT_START: T{TOOL} Bed={BED} Extruder={EXTRUDER_TEMP} Chamber={CHAMBER}" TYPE=echo

G28 # Home

BED_MESH_CLEAR

QUAD_GANTRY_LEVEL # Level

# Heat Bed

SET_HEATER_TEMPERATURE HEATER=heater_bed TARGET={BED}

TEMPERATURE_WAIT SENSOR=heater_bed MINIMUM={BED-2} MAXIMUM={BED+2}

# Heat Active Extruder

SET_HEATER_TEMPERATURE HEATER={EXTRUDER} TARGET={EXTRUDER_TEMP}

TEMPERATURE_WAIT SENSOR={EXTRUDER} MINIMUM={EXTRUDER_TEMP-2} MAXIMUM={EXTRUDER_TEMP+2}

# Chamber (if >0)

{% if CHAMBER > 0 %}

STATUS_MSG MSG="Heating Chamber to {CHAMBER}"

# Use chamber heater/fan logic (add your chamber macro if needed)

M141 S{CHAMBER} # Or your chamber heat command

TEMPERATURE_WAIT SENSOR=chamber MINIMUM={CHAMBER-2} MAXIMUM={CHAMBER+2}

{% endif %}

BED_MESH_CALIBRATE # Mesh

G90 # Absolute

STATUS_READY # LEDs ready!

However, before implementing this change, I saved off the current config file set (printer.cfg, 251003_T0_Nitehawk-Revo-LDO.cfg, 250922_TO_stealthburner_leds.cfg, 251029_T1_Nitehawk-Revo-LDO.cfg, 251002_T1_stealthburner_leds.cfg) to config-20251103-113415.zip and put it in C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Dock.

Then I replaced my PRINT_START with Grok’s version, saved, and restarted. I also reset (rolled-over) Klippy.log, which caused another save/restart. Then I tried the print again.

Side note: After starting the print, the console window started getting ‘spammed’ by temperature messages – the behavior that resulted in having a ‘hide temperatures’ filter. I activated the filter and the spam stopped (not sure if that affected my STATUS_MSG behavior or not).

Hmm, activating the ‘hide temperatures’ filter didn’t stop the temps span – uh oh!

Well, that went about as well as could be expected, meaning ‘not very well at all’ :(.

Grok used our STATUS_MSG macro:

STATUS_MSG MSG="PRINT_START: T{TOOL} Bed={BED} Extruder={EXTRUDER_TEMP} Chamber={CHAMBER}" TYPE=echo

1	STATUS_MSG MSG="PRINT_START: T{TOOL} Bed={BED} Extruder={EXTRUDER_TEMP} Chamber={CHAMBER}" TYPE=echo

but the result was “T1: PRINT_START: T{TOOL} Bed={BED} Extruder={EXTRUDER_TEMP} Chamber={CHAMBER}”. In other words, none of the {} parameters were expanded properly. And to add insult to injury, even that much didn’t show up until I hit F5 (or disabled the ‘hide temperatures’ filter).

The extruder temperature went up to 200C and then stayed there, until eventually resulting in a “Extrude below min temperature”. I’m actually not even sure the T1 extruder ever got hot AT ALL – have to check.

Also got another error – “The value ‘sb_leds’ is not valid for LED”. This sounds like an issue with naming conventions in printer.cfg

The reason the ‘Extruder below temps’ error occurred was because the T0 extruder was being heated, but the desired T1 extruder was not. I confirmed I could manually set T1 to a temp at the printer KlipperScreen and T1’s extruder actually got hot. So, the number mixup may well be in PRINT_START or in the Gcode

07 November 2025 Update:

These last few days I have been working on getting the various stealthburner LED color/intensity combinations working on both T0 & T1 toolheads, and wound up with a totally different configuration than the ‘stock’ MissChanger. Instead of two complete sets of ‘STATUS_xxx’ LED-setting macros, Grok talked me through creating a single set of macro files called ‘251103_shared_stealthburner_leds.cfg’ containing all the macro code, and separate very small ‘251103_T0/T1_stealthburner_leds.cfg. All the T0/T1 files to is define the mcu pin number to be used. When a ‘STATUS_XXX’ macro is called, it first figures out which toolhead is active, and then passes a new ‘LED’ parameter to the appropriate led-setting macro (typically ‘_set_sb_leds_by_name’). This took a long while to work through all the hardware and software problems, but eventually (with a LOT of help from Grok), I got it figured out. All the status codes work now, with both T0 & T1. The related config files were all saved to the ‘C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\251107_stealthburner_LED_config’ folder.

The saga continues in

Adding a Second Toolhead to my Voron 2.4, Part II

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Posted 08 November 2025.

In part I of this saga, I described my motivations for starting this project as follows:
Last May (2025) I started the process of building a Voron 2.4 300x300mm 3D printer, with the ultimate goal of constructing a dual extruder system capable (hopefully) of complex prints requiring soluble supports. Now that I have the printer running with a single ‘Stealthburner’ toolhead, it is time to move on toward my ultimate goal of a dual extruder system.

After a LOT of research into the many available toolchanger mods, I chose the MISSChanger (the ‘MISS’ stands for ‘Make It Simple, Stupid!’) mod because unlike all the other mods, this one does not require a ‘top hat’ addition to make room for the top-rail-mounted docking system, room that I do not have in my office. Instead, it uses up about 130 mm of print surface (almost half of my available Y-dimension space on my 300×300 plate at the front of the printer for the docking system. If necessary, however, the docking system can be easily removed to recover the print space, but only at the cost of going back to a single-extruder configuration.

08 November 2025 Update:

I now have tool changing working, and I was actually able to make a two-color print, as shown in the following short video and a photo of the 10mm two-color calibration cube.

Smooth toolchanges – who would have thought I would ever get this far!

My very first dual-color print on my Voron 2.4/MissChanger 3D Printer

Lots of work still to do. The above print isn’t very high quality, and the zero offset isn’t dialed in yet. In addition I noticed the toolhead logo/nozzle colors were off; the nozzle LEDs were a dark red during print instead of white – which made seeing print details very difficult. Either the STATUS_PRINTING nozzle color isn’t white like I thought, or PRINT_START isn’t changing to STATUS_PRINTING when needed.

I manually checked, and STATUS_PRINTING nozzle LEDs are full white – so that’s not the problem. Looking at PRINT_START I don’t see where the STATUS_xxx macros are used except at the end when STATUS_READY is called.

Side Note: When I started checking where (if anywhere) the stealthburner LED colors were being set at the beginning of a print, I found that they weren’t being set at all, which explains why I wasn’t seeing anything. Also in this process, I discovered that Vin’s MissChanger files contain their own, much more complex PRINT_START macro (among others). This macro is found in ‘misschanger_macros/print_time_default.cfg’, which is included at the very start of Vin’s example ‘printer.cfg’ file. I had blindly copied these include lines into my ‘printer.cfg’ file without ever realizing what was in them, as they didn’t seem to affect much. In particular I never realized there was another PRINT_START macro due to the way that Klipper parses includes – subsequent copies of any section or macro override any previous ones, so my PRINT_START macro always survived the process. I’m not going to worry about this right now – I’ll get to it when I get to it.

I went into PRINT_START and placed some STATUS_XXX macro calls and some STATUS_MSG debug prints, and will re-do the test print. I also took photos of each defined STATUS_XXX color sets so I can match what I’m seeing with a STATUS_XX call in PRINT_START. See below for the photos:

10 November 2025 Update:

Well, I’m not much smarter than I was yesterday regarding two-color prints, but I think I may have made some progress today. I couldn’t (and still can’t) figure out Vin’s instructions for setting up toolhead Z offsets for tools other than T0. Finally I remembered that Vin’s instructions had me add the following to printer.cfg in the SAVE_CONFIG section:

#*# [tool_probe T1]
#*# z_offset = -1.750000
#*#
#*# [extruder1]
#*#

#*# [tool_probe T1]

#*# z_offset = -1.750000

#*#

#*# [extruder1]

#*#

This led me to believe that I could probably just mount T1, tell Klipper to send the toolhead to Z-=0, and use the paper test to set the offset. As far as I can tell, this trick actually worked! So, now I am wondering what all the hooforah is for the Lube_Ball calibration tools and associated config files? Here’s a photo of my two-color calibration block, with no fine tuning done for either toolhead.

Two color print (T1 green, T0 white) with both z-offsets set manually, and no fine-tuning

In the above photo, it looks like the T1 z-offset of -1.750 is just a little too much, as the brim lines aren’t squeezed enough to connect to each other. I reduced the offset to -1.700 and ran the print again.

Reduced T1 z-offset from -1.750 to -1.700. Much nicer ‘squeeze on brim lines.

As the above photo shows, this offset produced a much nicer ‘squeeze’ on the brim lines. Now it remains to be seen if this method will hold up over time.

I decided to try Voxel3D_Nederland’s XYZ tuning print, shown here. It will be interesting to see if it confirms the z-offsets I have so far.

When I tried to print this job, I got an error message that said the extruder was too cool. Then I noticed that the T1 extruder temp was where it should be (240C), but the gcode was trying to print with T0 – oops. I hope this is actually a problem with the slicer, as my test prints with the two-color 10mm cal cube have worked correctly.

11 November 2025 Update:

I ran into yet another odd problem with the offsets. After getting the T1 z-offset nailed down I tried another print, and this on failed miserably, with the extruder starting out way too high. I ‘fine-tuned’ it back down again, but it took almost all (and then some) of the original -1.700mm offset back out again – which can’t be right. I re-ran PROBE_CALIBRATE on T1 and got close to the original -1.700mm, and when I tried the print again, it worked fine. However, when I tried to print the same job a second time without any changes, the same thing (extruder tip way too high) happened again. After thinking about this for a while, I began to think that the culprit was the ‘trigger_to_bottom = -1.896’ entry in the ‘[tools_calibrate]’ section of misschanger_settings.cfg. Maybe somehow this was being added to the T1 z-offset?

So, I set the ‘trigger_to_bottom’ value to zero and tried again, and saw that the 10mm two-color print was now consistently perfect. I am now in the process of making several prints in a row to verify that the z-offset is now consistently correct.

Not quite. I got a couple of prints where the extruder started out about 0.05mm too low. Not quite sure that’s all that bad, so I’m going to keep the offset at -1.700 for a few more prints.

I added 0.05mm to the z-offset to arrive at -1.750mm and restarted the firmware, and this time the extruder tip was too high by about 0.900mm – I have no idea why. The ‘trigger_to_bottom_z’ value in misschanger_settings.cfg is still zero. I restarted again and tried another print. This time the extruder tip was too high by about 0.6mm (could be the same as the 0.9 from before). Tried another print without accepting the 0.6 offset recommendation and without restarting. Same thing – extruder tip too high

Chose ‘apply offset’ Klipper restarted, and z_offset in [tool_probe T1 changed from -1.75 to -1.10mm. Did another print. Job went OK. Trying another print without changing anything. Good print.

Did a full Klipper reboot, selected test job without any other changes. This time the extruder tip was WAY too high; almost -2.0mm. At this point the printer.cfg tool_probe T1 offset is -1.10, so to get the extruder down another 1.9mm would put the extruder into positive territory – wow!.

Did a Home-All, then sent extruder to z=0; Had to RAISE the extruder by 0.60mm in order to get the proper ‘paper’ thickness. Did another PROBE_CALIBRATE; the result was _0.477. Accepted the result, and the T1 offset changed from -1.100 to … -1.100 – NO CHANGE! Did a save & restart from MainSail, and checked printer.cfg again. T1 offset is still -1.100 – unchanged. Did a HOME ALL, then checked extruder zero; had to raise the tip 0.5mm for a good ‘paper drag’.

Did another print without changing anything (T1 z_offset still at -1.1). Had to ‘fine-tune’ up 0.5mm, so this time I accepted the change. This time the T1 z_offset did not change with the restart – had to manually revise it – to -1.6000.

Did a ‘save & restart, HOME ALL, and sent extruder to z=0. This time I had to LOWER the extruder tip by 0.5mm for good paper drag. So I adjusted T1 z_offset by 0.5mm UP (minus), but this caused me to have to LOWER it by 0.5 after a HOME ALL.

Alright – there is certainly something rotten in Denmark. I changed to T0, sent the extruder to 150,200,0 and the paper check was fine – within 0.1mm. I did this because of this sentence in Vin’s instructions; “test the z-offset with the paper test. – If it is good then you set up the trigger_to_bottom_z value correctly. However, I had long since manually set the ‘trigger_to_bottom_z’ value to 0, so I really don’t undersdand how this works.

Next, I switched from T0 to T1, ran HOME ALL & QGL. Then tested offset by driving extruder to zero. This time it was pretty much spot-on – within 0.1mm. Tried another test print; good print.

Do ten test prints:

Print 1: OK.
Print 2: OK; a skosh low (brim was hard to scrape off, but not impossible)
Print 3: OK;
Print 4: Failed – extruder started out too high
Print 5: Failed – extruder started out too high
Print 6: Failed – extruder started out too high

I inspected the T1 mount on the carrier, and it seemed pretty tight. Also the screw-in extruder tip seemed secure, so those are probably not the culprit. At this point I noticed that starting when starting a print job, the printer skipped both the HOME ALL & QGL steps (not in PRINT_START?). Maybe that is what is causing the wandering z_offset?

Print 1: After HOME ALL & QGL. looks good – almost perfect first layer.
Print 2: After HOME ALL & QGL. looks good – almost perfect first layer.
Print 3: After HOME ALL & QGL. Good print, but extruder a little high.
Print 4: After HOME ALL & QGL. Poor print. Extruder started out too high
Print 5 After HA & QGL. Poor print. Extruder started out too high
Print 6 After HA & QGL. Poor print. Extruder started out too high
Print 7 After HA & QGL. Excellent print – almost perfect first layer

At this point, it looks like I can consistently get two-color prints that have a functional (if not pretty) first layer with T1, without requiring any ‘fine-tune’ adjustments (although smaller ‘fine tune’ adjustments might be advisable). And this is with the ‘trigger_to_bottom_z’ parameter in the ‘tools_calibrate’ section of misschanger_settings.cfg set to zero.

literally dozens of test prints of my 20x20x10mm high dual-color test print. Note that many successful prints were terminated early, as I was mostly interested in first layer quality.

12 November 2025 Update:

At this point, I think I can successfully do two-color/material prints, with maybe the need for some minor ‘fine-tuning’. However, it is clear that the PRINT_START macro needs to make certain that the HOME_ALL and QGL operations are performed before each print actually starts. Looking at the PRINT_START macro, I see:

[gcode_macro PRINT_START]
description: Multi-tool start (heat active extruder + bed/chamber)
gcode:
    STATUS_MSG MSG="PRINT_START: T{TOOL} Bed={BED} Temp={TOOL_TEMP} Size={params.FIRST_LAYER_PRINT_SIZE|default(0.2)}" TYPE=echo
    {% set TOOL = params.TOOL|default(0)|int %}
    {% set EXTRUDER = 'extruder' + (TOOL|string if TOOL > 0 else '') %}  # 'extruder' or 'extruder1'
    {% set BED = params.BED_TEMP|default(60)|int %}
    {% set TOOL_TEMP = params.TOOL_TEMP|default(200)|int %}
    {% set T1_TEMP = params.T1_TEMP|default(TOOL_TEMP)|int %}  # Use T1_TEMP if passed

    # Force home/level if uninitialized
    {% if printer.toolhead.homed_axes != 'xyz' %}
        STATUS_MSG MSG="Printer uninitialized - Homing + Leveling..." TYPE=echo
        G28  # Home all
        QUAD_GANTRY_LEVEL  # Level
    {% endif %}

    SELECT_TOOL T={TOOL}  # Switch to T1 if TOOL=1

    #STATUS_MSG MSG="PRINT_START: T{TOOL} Bed={BED} Temp={TOOL_TEMP} Size={params.FIRST_LAYER_PRINT_SIZE|default(0.2)}" TYPE=echo
    STATUS_MSG MSG="STATUS_MESHING"
    STATUS_MESHING #Toolhead LEDs
    BED_MESH_CLEAR
    BED_MESH_CALIBRATE  # Mesh after level

    # Heat Bed
    STATUS_HEATING  #Toolhead LEDs
    SET_HEATER_TEMPERATURE HEATER=heater_bed TARGET={BED}
    TEMPERATURE_WAIT SENSOR=heater_bed MINIMUM={BED-2} MAXIMUM={BED+2}

    # Heat Active Extruder
    SET_HEATER_TEMPERATURE HEATER={EXTRUDER} TARGET={TOOL_TEMP}
    TEMPERATURE_WAIT SENSOR={EXTRUDER} MINIMUM={TOOL_TEMP-2} MAXIMUM={TOOL_TEMP+2}

    G90  # Absolute

    STATUS_PRINTING  # LEDs ready!

[gcode_macro PRINT_START]

description: Multi-tool start (heat active extruder + bed/chamber)

gcode:

STATUS_MSG MSG="PRINT_START: T{TOOL} Bed={BED} Temp={TOOL_TEMP} Size={params.FIRST_LAYER_PRINT_SIZE|default(0.2)}" TYPE=echo

{% set TOOL = params.TOOL|default(0)|int %}

{% set EXTRUDER = 'extruder' + (TOOL|string if TOOL > 0 else '') %} # 'extruder' or 'extruder1'

{% set BED = params.BED_TEMP|default(60)|int %}

{% set TOOL_TEMP = params.TOOL_TEMP|default(200)|int %}

{% set T1_TEMP = params.T1_TEMP|default(TOOL_TEMP)|int %} # Use T1_TEMP if passed

# Force home/level if uninitialized

{% if printer.toolhead.homed_axes != 'xyz' %}

STATUS_MSG MSG="Printer uninitialized - Homing + Leveling..." TYPE=echo

G28 # Home all

QUAD_GANTRY_LEVEL # Level

{% endif %}

SELECT_TOOL T={TOOL} # Switch to T1 if TOOL=1

#STATUS_MSG MSG="PRINT_START: T{TOOL} Bed={BED} Temp={TOOL_TEMP} Size={params.FIRST_LAYER_PRINT_SIZE|default(0.2)}" TYPE=echo

STATUS_MSG MSG="STATUS_MESHING"

STATUS_MESHING #Toolhead LEDs

BED_MESH_CLEAR

BED_MESH_CALIBRATE # Mesh after level

# Heat Bed

STATUS_HEATING #Toolhead LEDs

SET_HEATER_TEMPERATURE HEATER=heater_bed TARGET={BED}

TEMPERATURE_WAIT SENSOR=heater_bed MINIMUM={BED-2} MAXIMUM={BED+2}

# Heat Active Extruder

SET_HEATER_TEMPERATURE HEATER={EXTRUDER} TARGET={TOOL_TEMP}

TEMPERATURE_WAIT SENSOR={EXTRUDER} MINIMUM={TOOL_TEMP-2} MAXIMUM={TOOL_TEMP+2}

G90 # Absolute

STATUS_PRINTING # LEDs ready!

So, at least in theory the PRINT_START macro does the HOME_ALL (G28) and QGL if it hasn’t already been done. However, I’m not certain it *ever* does this. I looked to see if there were any status messages emitted, but couldn’t find anything. In fact, there don’t appear to be *any* status messages in the Klippy log. I asked Grok about this, and apparently the only way to get user outputs to the Klippy.log is to put in RESPOND lines. So I put a RESPOND MSG=”In PRINT_START” in the PRINT_START macro. Also, I commented out the ‘if’ statement guarding the HOME_ALL (G28) and QGL commands in PRINT_START to see if that would actually happen, and started a new test print. Console output confirmed that the G28 & QGL commands were actually performed, so we’ll see. Yep, the print started OK (with the extruder tip maybe just a bit too far from the bed, but still very nice!).

The RESPOND message did not appear in Klippy.log – bummer.

I think I’m going to declare victory at this point, and start working on the status LED problem. The problem is that the STATUS_XX commands seem to be going to T0 instead of T1. From the console log I see:

Voron24_30

Send code...
12:58 PM
Done printing file
12:55 PM
Klipper state: Ready
12:55 PM
// T0: _set_sb_leds_by_name. led = t0_sb_leds
12:55 PM
Klipper state: Ready
12:55 PM
// T0: _set_sb_leds_by_name. led = t0_sb_leds
12:55 PM
Klipper state: Ready
12:55 PM
// T0: Status Ready. led = t0_sb_leds
12:55 PM
Selected tool 0 (tool T0)
12:55 PM
Found active tool probe: tool_probe T0
12:55 PM
Activating extruder extruder
12:55 PM
All probes triggered
12:55 PM
Toolhead T0 Select Macro
12:52 PM
Klipper state: Ready
12:52 PM
// T1: _set_sb_leds_by_name. led = t1_sb_leds
12:52 PM
Klipper state: Ready
12:52 PM
// T1: _set_sb_leds_by_name. led = t1_sb_leds
12:52 PM
Klipper state: Ready
12:52 PM
// T1: Status Ready. led = t1_sb_leds
12:52 PM
Tool tool T1 already selected
12:52 PM
Klipper state: Ready
12:52 PM
// T1: _set_sb_leds_by_name. led = t0_sb_leds
12:52 PM
Klipper state: Ready
12:52 PM
// T1: _set_sb_leds_by_name. led = t0_sb_leds
12:50 PM
Klipper state: Ready
12:50 PM
// T1: _set_sb_leds_by_name. led = t0_sb_leds
12:50 PM
Klipper state: Ready
12:50 PM
// T1: _set_sb_leds_by_name. led = t0_sb_leds
12:50 PM
...
12:48 PM
TOOL_BED_MESH_CALIBRATE...
12:48 PM
Klipper state: Ready
12:48 PM
// T1: _set_sb_leds_by_name. led = t0_sb_leds
12:48 PM
Klipper state: Ready
12:48 PM
// T1: _set_sb_leds_by_name. led = t0_sb_leds
12:48 PM
Klipper state: Ready
12:48 PM
// T1: STATUS_MESHING
12:48 PM
Tool tool T1 already selected

Voron24_30

Send code...

12:58 PM

Done printing file

12:55 PM

Klipper state: Ready

12:55 PM

// T0: _set_sb_leds_by_name. led = t0_sb_leds

12:55 PM

Klipper state: Ready

12:55 PM

// T0: _set_sb_leds_by_name. led = t0_sb_leds

12:55 PM

Klipper state: Ready

12:55 PM

// T0: Status Ready. led = t0_sb_leds

12:55 PM

Selected tool 0 (tool T0)

12:55 PM

Found active tool probe: tool_probe T0

12:55 PM

Activating extruder extruder

12:55 PM

All probes triggered

12:55 PM

Toolhead T0 Select Macro

12:52 PM

Klipper state: Ready

12:52 PM

// T1: _set_sb_leds_by_name. led = t1_sb_leds

12:52 PM

Klipper state: Ready

12:52 PM

// T1: _set_sb_leds_by_name. led = t1_sb_leds

12:52 PM

Klipper state: Ready

12:52 PM

// T1: Status Ready. led = t1_sb_leds

12:52 PM

Tool tool T1 already selected

12:52 PM

Klipper state: Ready

12:52 PM

// T1: _set_sb_leds_by_name. led = t0_sb_leds

12:52 PM

Klipper state: Ready

12:52 PM

// T1: _set_sb_leds_by_name. led = t0_sb_leds

12:50 PM

Klipper state: Ready

12:50 PM

// T1: _set_sb_leds_by_name. led = t0_sb_leds

12:50 PM

Klipper state: Ready

12:50 PM

// T1: _set_sb_leds_by_name. led = t0_sb_leds

12:50 PM

...

12:48 PM

TOOL_BED_MESH_CALIBRATE...

12:48 PM

Klipper state: Ready

12:48 PM

// T1: _set_sb_leds_by_name. led = t0_sb_leds

12:48 PM

Klipper state: Ready

12:48 PM

// T1: _set_sb_leds_by_name. led = t0_sb_leds

12:48 PM

Klipper state: Ready

12:48 PM

// T1: STATUS_MESHING

12:48 PM

Tool tool T1 already selected

From the above output, I can see that the ‘STATUS_MESHING’ command was executed at 12:48, but the subsequent call to _set_sb_leds_by_name was called with ‘led = t0_sb_leds’ instead of ‘t1_sb_leds’, but I didn’t see any actual status change messages other than the one ‘STATUS_MESHING’ output. I think I need to edit ALL the STATUS_XX messages to include a STATUS_MSG MSG=”[current status call]” so I can track progress.

Saved all relevant config files (and printer.cfg backups) to ‘config-20251112-131701.zip’, and then deleted all the backup files.

Opened 251103_shared_stealthburner_leds.cfg and edited all ‘gcode_macro status_xxx’ macros to include a STATUS_MSG MSG = “status_xxx” line. Then I restarted Klipper, cleared the console and started another test print.

I noted that the printer started out with T0 initialized and it did the initial HOME_ALL & QGL with T0. Then changed tools and did STATUS_MESHING (with led = t0_sb_leds). Then a full mesh calibration, then // T1: status_heating (led = t0_sb_leds). I noted that the T0 leds did, in fact, change to the ‘STATUS_HEATING’ color set.

I got some Grok help in debugging this situation, and now the LED action seems to be following the correct toolhead. The affected files were 251103_shared_stealthburner_leds.cfg and 251103_paynter_toolchanger.cfg.

I saved the entire configuration set in ‘config-20251112-143625.zip’ in the MissChanger/Config Files folder.

Not so fast! There were a few more bugs to work out, but with Grok’s help we seem to have exterminated them – at least so far. I again saved the configuration set in MissChanger/Config Files/config-20251112-173325.zip

At this point I can print a two-color model reasonably consistently, with toolhead LED colors changing through ‘status_cal_z’, ‘status_meshing’, ‘status_heating’, then ‘status_printing’ and finally to ‘status_ready’ after the print concludes – yay! Here is a photo of a two-color print I just did from a design I created some time ago with my old Flashforge Pro IDEX printer (before I threw it in the trash!)

Final exam: Two color print of a desk nameplate for my wife

30 November 2025 Update:

Well, it has certainly been an interesting adventure so far, but I think I may have actually gotten to the point where I can do dual-material prints with my Voron printer. The last set of hurdles to surmount were a series of infinite hangs during tool changes, caused by poorly formed macros that were way too picky about extruder temperatures. The macros wanted to wait until the extruder temperature was just right, and sometimes the extruder in question just didn’t want to be that exact. This caused long waits (on the order of 30 seconds) before picking up the next tool, and eventually the printer wouldn’t pick up the next tool at all. I got a lot of help from Grok running this down, and I am now a real fan of this AI. Its superpower is a combination of an in-depth understanding of Klipper (by reading the manual at about 10000x human speed, with perfect recall) combined with the ability to grind through huge mind-numbing klippy.log files and then use that information to pinpoint the place(s) in my macros where things weren’t working correctly. For instance, here is one of several macros that regulate the process of changing from one toolhead to another:

#--------------------------------------------------------------------
[gcode_macro _TOOL_DROPOFF]
gcode:
    ## Variables
    {% set tn     = params.TN|string %}
    {% set tool   = printer['tool ' + tn] %}
    {% set x      = tool.params_park_x|float %}
    {% set y      = tool.params_park_y|float %}
    {% set z      = tool.params_park_z|float %}
    {% set safe_y = tool.params_safe_y|float %}
    {% set fast   = tool.params_fast_speed|float %}
    {% set path   = tool['params_' ~ tool.params_type ~ '_path'] %}
    {% set max_z  = printer.configfile.config["stepper_z"]["position_max"]|float %}
    {% set min_z  = tool.params_min_z|float %}
    {% set z_hop  = tool.params_z_hop|default(1.0)|float %}
    {% set cur_y  = printer.toolhead.position[1]|float %}
    {% set cur_z  = printer.toolhead.position[2]|float %}
    G90
    ## Safety move
    {% if cur_y < safe_y %}
        _CLIENT_LINEAR_MOVE Y={safe_y} F={fast} ABSOLUTE=1
    {% endif %}
    ## Move to the dock
    {% if cur_z < min_z %}
        _CLIENT_LINEAR_MOVE X={x} Y={safe_y} Z={min_z+z_hop} F={fast} ABSOLUTE=1
    {% else %}
        _CLIENT_LINEAR_MOVE X={x} Y={safe_y} Z={[cur_z+z_hop, max_z]|min} F={fast} ABSOLUTE=1
    {% endif %}
    _CLIENT_LINEAR_MOVE Y={y + path[0]['y']|float} F={fast} ABSOLUTE=1     # Move to the first point in the path, in the y axis
    M400                                      # Clear cache
    ## Run the path
    {% for pos in path %}
        {% if pos['d']|int == 1 %}
            _CLIENT_LINEAR_MOVE X={x + pos['x']|float} Y={y + pos['y']|float} F={tool.params_path_speed|float * (pos.get('f', 1.0)|float)}  ABSOLUTE=1
        {% endif %}
    {% endfor %}
    M400                                      # Clear cache

#--------------------------------------------------------------------

[gcode_macro _TOOL_DROPOFF]

gcode:

## Variables

{% set tn = params.TN|string %}

{% set tool = printer['tool ' + tn] %}

{% set x = tool.params_park_x|float %}

{% set y = tool.params_park_y|float %}

{% set z = tool.params_park_z|float %}

{% set safe_y = tool.params_safe_y|float %}

{% set fast = tool.params_fast_speed|float %}

{% set path = tool['params_' ~ tool.params_type ~ '_path'] %}

{% set max_z = printer.configfile.config["stepper_z"]["position_max"]|float %}

{% set min_z = tool.params_min_z|float %}

{% set z_hop = tool.params_z_hop|default(1.0)|float %}

{% set cur_y = printer.toolhead.position[1]|float %}

{% set cur_z = printer.toolhead.position[2]|float %}

G90

## Safety move

{% if cur_y < safe_y %}

_CLIENT_LINEAR_MOVE Y={safe_y} F={fast} ABSOLUTE=1

{% endif %}

## Move to the dock

{% if cur_z < min_z %}

_CLIENT_LINEAR_MOVE X={x} Y={safe_y} Z={min_z+z_hop} F={fast} ABSOLUTE=1

{% else %}

_CLIENT_LINEAR_MOVE X={x} Y={safe_y} Z={[cur_z+z_hop, max_z]|min} F={fast} ABSOLUTE=1

{% endif %}

_CLIENT_LINEAR_MOVE Y={y + path[0]['y']|float} F={fast} ABSOLUTE=1 # Move to the first point in the path, in the y axis

M400 # Clear cache

## Run the path

{% for pos in path %}

{% if pos['d']|int == 1 %}

_CLIENT_LINEAR_MOVE X={x + pos['x']|float} Y={y + pos['y']|float} F={tool.params_path_speed|float * (pos.get('f', 1.0)|float)} ABSOLUTE=1

{% endif %}

{% endfor %}

M400 # Clear cache

This is very tough stuff to get my head around due to all the variable referencing, but basically it controls the carriage movement that drops off the current tool into its docking station before the printer moves on to picking up the next one. The Grok realized that part of the problem may have been that the extruder temps weren’t being set at their ‘standby’ temps when they were dropped off, which allowed the extruder to cool all the way down to ambient, which then caused a long delay on pickup as the printer waited for the extruder temp to come back up (and as I said before, sometimes the wait became infinite). In any case, Grok wrote out a completely valid bit of Klipper code to add to the end of this macro to make sure the dropped-off extruder temp was set to ‘standby’ properly, as follows:

    #11/30/25 gfp: added per Grok to eliminate pause for temperature on next pickup
    {% set tn = params.TN|string %}
    {% set tool = printer['tool ' + tn] %}
    {% set macro = "gcode_macro T" ~ tool.tool_number %}
    {% if printer[macro].standby_temp > 0 %}
        M104 T{tool.tool_number} S{printer[macro].standby_temp|int}  ; Set standby temp for parked tool
    {% endif %}

#11/30/25 gfp: added per Grok to eliminate pause for temperature on next pickup

{% set tn = params.TN|string %}

{% set tool = printer['tool ' + tn] %}

{% set macro = "gcode_macro T" ~ tool.tool_number %}

{% if printer[macro].standby_temp > 0 %}

M104 T{tool.tool_number} S{printer[macro].standby_temp|int} ; Set standby temp for parked tool

{% endif %}

Then it went on to look at the companion ‘TOOL PICKUP’ macro and identified the real culprit, which was the use of the ‘M109’ gcode command, which sets the extruder temperature, and then waits for the extruder temperature to fall within a very narrow range. This can take 30 seconds or more – and sometimes the ‘more’ is ‘infinity. Grok’s solution was to use the M104 command, which also sets the temperature, but doesn’t wait – it is non-blocking. Then he followed this with a TEMPERATURE_WAIT command that does block – but only until the extruder temp rises to within 5C of the setpoint. Here’s the applicable part of this macro, with the original M109-based code commented out and the Grok code substituted.

#--------------------------------------------------------------------
[gcode_macro _TOOL_PICKUP]
gcode:
    M400
    ## Variables
    {% set tn             = params.TN|string %}
    {% set tool           = printer['tool ' + tn] %}
    {% set macroparameter = "gcode_macro T" ~ tool.tool_number|string %}
    {% set x              = tool.params_park_x|float %}
    {% set y              = tool.params_park_y|float %}
    {% set z              = tool.params_park_z|float %}
    {% set safe_y         = tool.params_safe_y|float %}
    {% set close_y        = tool.params_close_y|float %}
    {% set cur_z          = printer.toolhead.position[2]|float %}
    {% set z_hop          = tool.params_z_hop|default(1.0)|float %}
    {% set fast           = tool.params_fast_speed|float %}
    {% set path           = tool['params_' ~ tool.params_type ~ '_path'] %}
    M400
    {% if printer.tool_probe_endstop.active_tool_number|int == -1 %}
        ## Fast to the last point
        G90
        _CLIENT_LINEAR_MOVE Y={close_y} F={fast} ABSOLUTE=1
        _CLIENT_LINEAR_MOVE X={x + path[-1]['x']|float} F={fast} ABSOLUTE=1
        _CLIENT_LINEAR_MOVE Y={y + path[-1]['y']|float} F={fast} ABSOLUTE=1

        #11/30/25 Grok working on toolchange hangup
        ## Wait for temp before actually picking up the tool, while the nozzle is resting on it's pad.
#        {% if tool.extruder %}
#            {% if printer[macroparameter].print_temp > 0 and printer["gcode_macro _print_time"].printing|int == 1 %}
#                M109 T{tool.tool_number} S{printer[macroparameter].print_temp|int}
#            {% else %}
#                M109 T{tool.tool_number} S{printer[tool.extruder].target|int}
#            {% endif %}
#        {% endif %}

        ## 11/30/25 Grok With this modified version:
        {% if tool.extruder %}
            {% if printer[macroparameter].print_temp > 0 and printer["gcode_macro _print_time"].printing|int == 1 %}
                # Set target temperature without waiting for exact match
                M104 T{tool.tool_number} S{printer[macroparameter].print_temp|int}
                # Wait only until temperature reaches within a reasonable range of the target
                TEMPERATURE_WAIT SENSOR={tool.extruder} MINIMUM={printer[macroparameter].print_temp|int - 5}
            {% else %}
                M104 T{tool.tool_number} S{printer[tool.extruder].target|int}
                TEMPERATURE_WAIT SENSOR={tool.extruder} MINIMUM={printer[tool.extruder].target|int - 5}
            {% endif %}
        {% endif %}

#--------------------------------------------------------------------

[gcode_macro _TOOL_PICKUP]

gcode:

M400

## Variables

{% set tn = params.TN|string %}

{% set tool = printer['tool ' + tn] %}

{% set macroparameter = "gcode_macro T" ~ tool.tool_number|string %}

{% set x = tool.params_park_x|float %}

{% set y = tool.params_park_y|float %}

{% set z = tool.params_park_z|float %}

{% set safe_y = tool.params_safe_y|float %}

{% set close_y = tool.params_close_y|float %}

{% set cur_z = printer.toolhead.position[2]|float %}

{% set z_hop = tool.params_z_hop|default(1.0)|float %}

{% set fast = tool.params_fast_speed|float %}

{% set path = tool['params_' ~ tool.params_type ~ '_path'] %}

M400

{% if printer.tool_probe_endstop.active_tool_number|int == -1 %}

## Fast to the last point

G90

_CLIENT_LINEAR_MOVE Y={close_y} F={fast} ABSOLUTE=1

_CLIENT_LINEAR_MOVE X={x + path[-1]['x']|float} F={fast} ABSOLUTE=1

_CLIENT_LINEAR_MOVE Y={y + path[-1]['y']|float} F={fast} ABSOLUTE=1

#11/30/25 Grok working on toolchange hangup

## Wait for temp before actually picking up the tool, while the nozzle is resting on it's pad.

# {% if tool.extruder %}

# {% if printer[macroparameter].print_temp > 0 and printer["gcode_macro _print_time"].printing|int == 1 %}

# M109 T{tool.tool_number} S{printer[macroparameter].print_temp|int}

# {% else %}

# M109 T{tool.tool_number} S{printer[tool.extruder].target|int}

# {% endif %}

## 11/30/25 Grok With this modified version:

{% if tool.extruder %}

{% if printer[macroparameter].print_temp > 0 and printer["gcode_macro _print_time"].printing|int == 1 %}

# Set target temperature without waiting for exact match

M104 T{tool.tool_number} S{printer[macroparameter].print_temp|int}

# Wait only until temperature reaches within a reasonable range of the target

TEMPERATURE_WAIT SENSOR={tool.extruder} MINIMUM={printer[macroparameter].print_temp|int - 5}

{% else %}

M104 T{tool.tool_number} S{printer[tool.extruder].target|int}

TEMPERATURE_WAIT SENSOR={tool.extruder} MINIMUM={printer[tool.extruder].target|int - 5}

{% endif %}

These modifications worked extremely well. My test print went from an average of about 30-45sec between the time one tool finished printing to the time the next tool started printing (and as I noted before, it almost always died entirely at some point in the print) to an average of about 15sec inter-tool delay, with complete reliability – YAY!

Here’s a couple of photos of my test print. It is a box with cutouts for chassis-mounted USB-C female sockets; the body was printed in green PETG, and the supports were printed in black PLA.

Of course, my ultimate goal is still to be able to do prints that require water-soluble support material, but the above project at least demonstrated that the two-toolhead MissChanger mod – or at least my version of it, can handle dual-material prints.

03 December 2025 Update:

Made my first water-soluble support print today – yay! I printed the bottom part of one of my caplet dispensers, as shown in the screenshot below:

And here is the result:

07 December 2025 Update:

After running into yet more problems with getting a good ‘squish’ on T1 (and spending WAY too much time working with Grok to no real result), today I went back to Vin’s instructions and went through the entire thing again, carefully.

In preparation for this I changed out the PVA soluble filament for PETG to eliminate any issues associated with the rather flexible and sometimes cantankerous PVA. Then, starting with 4.3. Calibrate offsets .

The first step is PROBE_CALIBRATE. This is the normal ‘paper test’ z-offset calibration, a step I have become very familiar with.

4.3.2. Calibration probe setup: This describes the process of setting up the LUBE_BALLS calibration probe, which I had already done. The description is a bit confusing because Vin also talks about another type of physical offset probe called a ‘Nudge Probe’, so I had to keep working around that issue. Another confusing factor is the need to keep removing and replacing the calibration probe. It can’t be on the bed when doing a QGL, and a QGL is required before doing most steps – ugh!

The steps for validating the calibration probe and calibrating T0, which is then used as the reference for all other toolheads:

Go to printer.cfg and record the z-offset for [tool_probe T0], which should be at (or near) the bottom of the file
Mount tool-head T0 and make sure it’s nozzle is clean
!!! MAKE SURE THE CALIBRATION PROBE IS NOT MOUNTED !!!
Run G28 and QUAD_GANTRY_LEVEL
Mount the calibration probe to the bed.
Run CALIBRATE_TRIGGER_BOTTOM. If it is a fresh calibration probe, it is worth redoing this step until the suggested value is consistent at +/- 0.005mm.
Copy the proposed offset on the console to the trigger_to_bottom_z: in [tools_calibrate].
Save and restart
Run CALIBRATE_OFFSETS TOOL=0 – But, DON’T RESTART
Check if proposed z-offset to be +-0.01mm of the recorded z_offset in step 1.
Run CALIBRATE_OFFSETS TOOL=0 2-3 more times to make sure the measured value is consistent.

The above procedure made a lot more sense today than it did in the past. Maybe I had to struggle for a while and then come back to this from a fresh perspective, kinda like letting go of that NYT Sunday Crossword at midnight, getting some sleep, and coming back to it the next day.

4.3.3. Other tool-head(s):

This is where I got lost before, as I just didn’t understand the strategy being pursued. The idea is to make sure the LUBE_BALLS calibration assembly (probe) is working by using it to calibrate the offsets for T0, and then use the T0 results as the reference for all other toolheads. The magic that makes this work is a macro called CALIBRATE_OFFSETS, which starts by running T0 against the LUBE_BALLS cal probe, and then automatically running each subsequent toolhead T1 through TN against the same probe, thereby establishing the X, Y & Z offsets of all the other toolheads relative to T0. These offsets are then stored in the gcode_x/y/z_offset variables in the [tool T(n)] section in the SAVE_CONFIG area of printer.cfg. If CALIBRATE_OFFSETS is called with a ‘TOOL=N’ argument, then only T0 and TN are calibrated. If CALIBRATE_OFFSETS TOOL=0 is used, only T0 is calibrated as is done in step 9 above.

After doing all this, I wound up with the following offsets for T1:

#*# [tool T1]
#*# gcode_x_offset: -0.101562
#*# gcode_y_offset: -0.195312
#*# gcode_z_offset: -0.120000

#*# [tool T1]

#*# gcode_x_offset: -0.101562

#*# gcode_y_offset: -0.195312

#*# gcode_z_offset: -0.120000

Amazingly enough, this setup resulted in a ‘perfect’ (or at least ‘damned good’) first layer, using my first-layer adjustment test print, shown below:

After this was successful, I replaced the PETG on T1 with my brand-new roll of SainSmart PVA, and tried my partial pill dispenser test print (shown above) again. This time the first PVA layer was as good as I have ever seen for a PVA layer, and the entire print continued without fail (The PVA supports inside the open cavity of the slide part did get loose about halfway through the print, but that wasn’t due to any calibration problem – just PVA not sticking completely to PVA. See the following gallery of print photos:

So at this point I believe I have essentially completed the journey to add a second toolhead to my Voron 2.4/300 3D printer – what a ride!

Stealthburner LED Problems

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Posted 31 October 2025

I’ve been having a heck of a time getting the neopixel LED string working on one of my two Stealthburner toolheads (MissChanger mod). Sometimes it would work, sometimes it would not, and I wasn’t able to correlate the two conditions to anything I was doing. On several occasions it seemed to be correlated with whether or not the front piece (the one containing the LEDs) was securely fastened to the main toolhead body with the two (very) long and two short(er) screws. It seemed it worked when the screws were not in, and didn’t work when they were in and tightened down.

At first I was convinced that one or more LED wires was getting pinched between the two toolhead halves, and when I tightened down the mating screws, the circuit was interrupted. I even found evidence for this and fixed it – several times – but the intermittent behavior continued.

Some research by Grok turned up a LOT of talking about SB LED issues, which were mostly divided into two categories – one thread earlier this year talked about waveform timing issues, and the other thread talked about the fact that the rp2040 outputs 3.3V waveforms while the nominal voltage for the LED string is 5V.

In desperation, I decided to attach a short cable to the LED string connector pads on the Nitehawk PCB on the front half of the SB, thereby allowing me to directly monitor the actual waveform being transmitted to the LED string.

I was able to observe the ‘not working’ waveform once and then my troublesome SB refused to not work again, stubbornly continuing to light up no matter what I did. The waveform in the ‘not working’ condition looked more like triangular waves rather than rectangular indicating an output loading condition of some kind. Unfortunately, I was unable to capture the waveform on my DSO, so I can’t display it here. The ‘working’ waveform is shown below:

Toolhead mounted on the Voron printer, LED string working properly

In an earlier post I described the test jig I had created using an Arduino UNO. I could use it to connect directly to the LED string on the front half of the SB, and my troublesome LED string worked fine on the test jig. As Grok pointed out however, the Arduino output waveform went to 5V, not the 3.3V the actual hardware was providing, so the test jig might not be valid. So, I replaced the Arduino UNO with a Teensy 4.1, which does use 3.3V outputs, as shown here:

I added a potentiometer into the output circuit so I could slowly drop the output waveform down from 3.3V to see where the LED string stopped working. At 3.3V output it was solid, and this particular string still worked fine at 2.7V peak, as shown in following trace-grabs:

Teensy 4.1 3.3V output, LED string working

So, it appears that that at least my particular LED string works fine all the way down to 2.7V, so I don’t think the intermittent issues other users have been experiencing are due to the rp2040 having a 3.3V instead of 5V output. My current thinking is that the problems are more likely to be the timing issues discussed in this Klipper Github PR

01 November 2025 Update:

When all was said and done, I could no longer get the LED string on my troublesome toolhead to fail, so I wound up putting it back together and mounting it back on the printer. However, as insurance against a future Murphy attack, I left the external LED data line monitor cable intact, and hot-glued it into the intake cavity for the part cooling fan, as shone in the following photo:

MissChanger Docking Woes – Solved!

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Posted 25 October 2025

Earlier this month I was able to run a successful docking sequence with one toolhead, as shown below:

Unfortunately, I haven’t been able to replicate this successfully, and after several failures I started looking for the root cause. Eventually I figured out that at least part of the issue was that the middle ‘retainer’ foot that keeps the sliding ‘claw’ from falling off is rotated slightly by the claw when it comes out the ‘docked’ position during an undocking procedure, and this rotation keeps the claw from freely sliding down the ramp and subsequently connecting to the toolhead carrier. See the following two photos for an example of this issue:

At first, I thought I just hadn’t tightened the retainer foot down enough, but doing so actually made the problem worse; now when the toolhead is pulled out of the pins by the toolhead carrier, there is enough force to still rotate the foot, but now the additional screw tension makes it even harder for the claw to slide down to the release position – yikes!

As an experiment, I modified the foot by removing 1mm from the bottom to form a ledge to mate with the front of the base, figuring this would stop the foot from rotating. Unfortunately this did not work – there was still enough play in even a very tightly matched ledge to allow the foot to rotate. Next I decided to create a second point of alignment to the foot by way of a post on the underside of the foot that mates to a hole on the upper surface of the base, as shown in the following photos.

The combination of the post/hole and ledge features seemed to do the trick. Now the claw disengages cleanly from the ‘docked’ position and slides freely down to the ‘undocked’ position as shown in the following video:

In an interesting side note, I discovered that I could easily adjust the rubber band tension by making a loop around either (or both) screw/washer combinations. As it turned out though, even the weakest arrangement (no additional loops) with the new foot/claw configuration was plenty to pull the claw all the way down the slide. Hopefully this will result in much better dock/undock performance – we’ll see.

24 October 2025 Update:

I wound up going through a few minor iterations on the design of the dock body/base and the retainer piece. On the dock body, I opened up all four pin docking holes by 0.5mm, and slightly enlarged the holes for the 2mm self-tapping screws, as these were very difficult to get all the way in, especially the two on the bottom. On the retainer piece, I wound up removing 1mm from the side that the claw slides on, as this seemed to provide a better sliding action.

After getting all this done, I remounted the dock assembly on my printer, and again (for the upteenth time) went through section 4.1. ‘Park position calibration’. When I thought I had everything lined up, I ran TEST_DOCKING only to have it fail – again. The claw wasn’t sliding over to the docked position, so I must not have gotten the Y-position correct and the pins didn’t slide into their respective holes. Went through the whole process again, but this time when I got to the part where the claw was ‘all the way up the ramp’ I commanded an X-minus move of 5mm, and made sure the claw moved smoothly into the docked position. Because I was working with the left-most dock , I was able to actually look through the left side transparency of the printer and see whether the pins on that side were lined up with the holes. Turns out that the docking failure was caused by the Y position being off (1mm too positive). I was only 1mm, but that made a huge difference. Here’s a short video of a successful dock/undock sequence.

Stay tuned,

Frank

MissChanger Klipper Configuration

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Posted 29 September 2025

I have decided to make the Klipper-related changes for my MissChanger adventure into its own post, so readers won’t have to wade through all my other non-klipper related blatherings.

The current project status is:

My single SB configuration with single-extruder config file 250830_OrigToolhead_printer.cfg & 250920_Original_stealthburner_leds.cfg working fine.
Currently using my new SB (due to original SB’s neopixel intermittency) with original SB’s NH BCB (due to new SB,s PCB failure). This combo works fine

Next step is to reload 250928_MC_T0_printer.cfg, 250922_T0-Nitehawk-Revo-LDO_Ex.cfg and 250922_T0_stealthburner_leds.cfg. this config file set loaded and started up fine.

Now it is time to go through Vim’s ‘Calibration’ (Section 4 in the TOC) instructions to see if I can get prints to work

02 October 2025 Update:

The first part of the ‘Calibration’ section is intended to shake the toolhead around on the Tap & Change mount to make sure it will slide onto and off the mount during tool changes.

Ran ‘G28’ (Home All) and confirmed the toolhead Z position of +10mm at the center of the bed.

Set the heated bed temp to 60C. According to Vin, this is to get the chamber temp up to 40C or so before starting the ‘shake & bake’ routine.

Tried to run ‘SHAPER_CALIBRATE’ but got a ‘Unknown Command’ error. Researched this a bit, and decided to skip this step for the moment.

So, I moved on to Section 4.1 – Park Position Calibrate.

First, I mounted the docking hardware I had previously constructed. This in itself required a bit of work to get everything assembled and mounted.

Then I ran the Home-All & QGL and STOP_TOOL_PROBE_CRASH_DETECTION.

I temporarily replaced the ‘100’ with ‘0.1’ in the toolhead movement options for X/Y movement. Then I used these movement options to optimize the ‘X’ position of the toolhead in front of the leftmost dock, as shown.

This process turned out to be a LOT more complicated than I thought, due to the irregular shape of the stealthburner toolhead. Not only did the X position have to be correct, but the dock module rotation around the 10mm rod mattered as well. Eventually I got what I think is a good lineup at X = 68.7.

After getting the X value down, and getting a good dock module orientation, I tried some dock/undock movements as shown in the following short video:

Tool 0 Dock/Undock testing

The above test was performed by moving the toolhead laterally to the optimum X position (68.7), and forward to just in front of the dock (Y ~ 110). Then I commanded a 50mm Y travel to fully engage the toolhead in the dock without forcing the docking collar up the locking ramp, followed by backing the toolhead out 50mm & repeating the process.

At this point I have one toolhead docking station calibrated with the leftmost docking station.

As a side note, my replacement NH USB PC and replacement RGB LED string came in today, so I have two working toolheads again. My original (Red) SB is now labelled as ‘T1’ and my second (Gray) SB is now labelled as ‘T0’. the USB serial ID’s are”

usb-Klipper_rp2040_4E363334320B42B6-if00  -- Orig (Red) toolhead with new USB PC
usb-Klipper_rp2040_4E363334324B5803-if00  -- Second (Gray) toolhead with orig USB PC
usb-Klipper_stm32h743xx_2A001E000A51333038383535-if00 -- Main controller MCU

usb-Klipper_rp2040_4E363334320B42B6-if00 -- Orig (Red) toolhead with new USB PC

usb-Klipper_rp2040_4E363334324B5803-if00 -- Second (Gray) toolhead with orig USB PC

usb-Klipper_stm32h743xx_2A001E000A51333038383535-if00 -- Main controller MCU

The next step is to create a second toolhead-specific config with its companion stealthburner_leds.cfg. Since the two stealthburners are identical save for their USB IDSs, this should be relatively easy.

I copied 250922_T0-Nitehawk-Revo-LDO_Ex.cfg to 251002_T1-Nitehawk-Revo-LDO_Ex.cfg, replaced the T0 USB ID with the new T1 USB ID, replaced include 250922_T0_stealthburner_leds.cfg with include 251002_T1_stealthburner_leds.cfg, and changed all 20 instances of ‘nhk0:’ with ‘nhk1:’.

I copied 250922_T0_stealthburner_leds.cfg to 251002_T1_stealthburner_leds.cfg and changed ‘nhk0:gpio7’ to ‘nhk1:gpio7’

Then I saved 250928_MC_T0_printer.cfg to 251002_MC_T1_printer.cfg and (on line 826) changed include ./250922_T0-Nitehawk-Revo-LDO_Ex.cfg to include ./251002_T1-Nitehawk-Revo-LDO_Ex.cfg.

Then using SCP in a Windows command window, I loaded all the above to the raspberry, changing the name of 251002_MC_T1_printer.cfg to just printer.cfg.

I disconnected the USB/Power connector onT0 and restarted restarted the printer. Got ‘mcu nhk0’ Unable to connect.

03 October 2025 Update:

I was a bit ahead of myself with getting the second toolhead up and running. For one thing, I discovered the problem I was having with not being able to successfully do a firmware restart instead having to cycle power was a known problem with the LDO USB adaptor board, and the fix was to physically remove two resistor chips from the PCB. I did this for both the USB adaptor boards.

Then I realized I hadn’t really completed the ‘park position calibrate’ step – I had just done the X position step, so I reverted the firmware to the T0 configuration and started over with this procedure. This time I wound up with X = 69.7 (probably due to some lateral movement of the entire docking bar).

05 October 2025 Update:

Finally got all the way through the dock park calibrate step for T0, and was able to run several successful TEST_DOCK cycles

08 October 2025 Update:

The last couple of days have been marked by one disaster after another. First, I have been unable to get the neopixel string on my new(er) Stealthburner to work, even though I would have sworn on a stack of bibles that it was working fine a few days ago. Second, I tried to ‘unload filament’, forgetting that that particular macro (and a few others I suspect) move the toolhead to the front of the printer, where it promptly collided with the docking assembly, and third, I tried a test print with my new(er) toolhead forgetting that I needed to recalibrate the z-axis offset, so my extruder tip was dragging along the print bed while I frantically banged on the fine-tuning Z+ button. I thought I was doing OK until I watched in horror as the entire conical tip of the extruder fell onto the print bed, along with a huge glop of molten filament! YIKES!!!

Neopixel LED Woes:

By swapping the front shell of my known-good original toolhead with the one from my new(er) toolhead, I was able to determine that the neopixel problem followed the front shell – so not a NH PCB, umbilical or USB adaptor problem. I removed the neopixel strings from both shells and swapped just the neopixel string – and the problem followed the suspect string. Visual inspection of the string was hampered by the fact that whoever assembled the string used all black wires for the intra-pixel connections, and then glopped what looks like black RTV on the connections.

While I did find and repair a broken connection, the string still didn’t work. At this point I decided to get a replacement string on order, so I jumped up on Amazon and ordered this:

When it arrived, I plugged it into my new(er) toolhead (thankfully without going to the trouble of installing all the LEDs) whereupon I discovered that it didn’t work either! I did the same thing with my original shell – no joy there either. Now I feel like I’m in an episode of “The Twilight Zone” (for those of you old enough to have watched them); I have three strings, one of which is brand-new, but only my original toolhead string actually works! After sleeping on this, I decided to set up a test jig to test all the strings independently of the printer. I grabbed an ancient Arduino UNO and a 3-pin 2.0mm male JST plug from my parts bin, downloaded Adafruit’s wonderful NeoPixel library and used their ‘strandtest.ino’ example program to drive the string under test. After getting through all the normal stupid programmer issues, I was able to validate the test jig against my known-good neopixel string – Yay! Then I tested the suspect string from my new(er) toolhead – yep still bad – and then the brand-new string from Amazon – bad. I was really shocked that the new string was bad, as it looked perfect physically, and since the pixels are wired in parallel, I would certainly have expected at least one to work. So, I went looking on Amazon for reviews and found one that said the blue (data) and black (ground) wires were reversed in the connector – yikes! I reversed the pins, and voila` the string lit up – YAY!!

Re-pinned Amazon Neopixel string

Now I have two working strings and one that’s still dead. Maybe it has the same mis-wiring issue? I grabbed my trusty Hanmatek DOS1102 digital O’Scope (a must-have for a well-equipped lab) and used it on my brand-new working string to verify that each pixel chip on the brand-new string had good, solid data (see trace-grab below).

However, when I looked at the ‘bad’ string, I can see the proper waveform on the ‘DO’ solder pad on the ‘input’ side of the first pixel, but not on the ‘output’ side (I didn’t realize until just now that there was an ‘input’ and ‘output’ side – I thought the data line was just like the +V and GND – straight passthrough). So, I bypassed the first pixel by physically connecting the ‘output’ wire to the ‘input’ pad and sure ’nuff, the remaining two pixels lit right up!

‘Bad’ neopixel string test with first pixel bypassed

I installed the new Neopixel string into my ‘T0’ toolhead (with the gray shell). Now that I have my nifty Arduino test program, I was able to test the string at each stage of the installation process to make sure all the required wire contortions didn’t fatally pinch a wire or break a solder connection. Here it is after the string was fully installed (and yes, I did check that the front-facing LED was working too).

Toolhead T0 shell with Neopixel string installed

If you happen to have an Arduino-compatible board (Ardiono, Sparkfun, Teensy, etc) you can easily build the same test jig. I have provided the Arduino code below:

/*
    Name:       NeopixelTest2.ino
    Created:	10/7/2025 5:35:59 PM
    Author:     FRANK_XPS_9530\Frank
*/

// A basic everyday NeoPixel strip test program.

// NEOPIXEL BEST PRACTICES for most reliable operation:
// - Add 1000 uF CAPACITOR between NeoPixel strip's + and - connections.
// - MINIMIZE WIRING LENGTH between microcontroller board and first pixel.
// - NeoPixel strip's DATA-IN should pass through a 300-500 OHM RESISTOR.
// - AVOID connecting NeoPixels on a LIVE CIRCUIT. If you must, ALWAYS
//   connect GROUND (-) first, then +, then data.
// - When using a 3.3V microcontroller with a 5V-powered NeoPixel strip,
//   a LOGIC-LEVEL CONVERTER on the data line is STRONGLY RECOMMENDED.
// (Skipping these may work OK on your workbench but can fail in the field)

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1:
#define LED_PIN    6

// How many NeoPixels are attached to the Arduino?
//#define LED_COUNT 60
#define LED_COUNT 3

// Declare our NeoPixel strip object:
//Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
//Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_RGBW + NEO_KHZ800);
//Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_WRGB + NEO_KHZ800);
//Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_RGBW + NEO_KHZ800);
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_RGBW + NEO_KHZ800);
// Argument 1 = Number of pixels in NeoPixel strip
// Argument 2 = Arduino pin number (most are valid)
// Argument 3 = Pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
//   NEO_RGBW    Pixels are wired for RGBW bitstream (NeoPixel RGBW products)


// setup() function -- runs once at startup --------------------------------

void setup() 
{
  Serial.begin(115200);
  Serial.println("In Setup");

  // These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
  // Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif
  // END of Trinket-specific code.

  strip.begin(); 
  // INITIALIZE NeoPixel strip object (REQUIRED)
  Serial.println("Set all LEDs OFF");
  strip.show();            // Turn OFF all pixels ASAP
  //delay(2000);
  strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255)
}


// loop() function -- runs repeatedly as long as board is on ---------------

void loop() 
{
  Serial.println("Set all LEDs OFF");
  strip.fill(0,0, LED_COUNT);
  strip.show();            // Turn OFF all pixels ASAP
  delay(500);

  // Fill along the length of the strip in various colors...
  Serial.println("colorWipe");
  colorWipe(strip.Color(255, 0, 0), 50); // Red
  delay(100);
  colorWipe(strip.Color(0, 255, 0), 50); // Green
   delay(100);
 colorWipe(strip.Color(0, 0, 255), 50); // Blue
  delay(500);

  Serial.println("Set all LEDs OFF");
  strip.fill(0, 0, LED_COUNT);
  strip.show();            // Turn OFF all pixels ASAP
  delay(500);

  //// Do a theater marquee effect in various colors...
  //Serial.println("theaterChase");
  //theaterChase(strip.Color(127, 127, 127), 50); // White, half brightness
  //theaterChase(strip.Color(127, 0, 0), 50); // Red, half brightness
  //theaterChase(strip.Color(0, 0, 127), 50); // Blue, half brightness


  //Serial.println("Set all LEDs OFF");
  //strip.fill(0, 0, LED_COUNT);
  //strip.show();            // Turn OFF all pixels ASAP
  //delay(500);

  Serial.println("rainbow");
  rainbow(10);             // Flowing rainbow cycle along the whole strip

  Serial.println("Set all LEDs OFF");
  strip.fill(0, 0, LED_COUNT);
  strip.show();            // Turn OFF all pixels ASAP
  delay(500);

 Serial.println("theaterChaseRainbow");
 theaterChaseRainbow(10); // Rainbow-enhanced theaterChase variant
}


// Some functions of our own for creating animated effects -----------------

// Fill strip pixels one after another with a color. Strip is NOT cleared
// first; anything there will be covered pixel by pixel. Pass in color
// (as a single 'packed' 32-bit value, which you can get by calling
// strip.Color(red, green, blue) as shown in the loop() function above),
// and a delay time (in milliseconds) between pixels.
void colorWipe(uint32_t color, int wait) {
  for (int i = 0; i < strip.numPixels(); i++) { // For each pixel in strip...
    strip.setPixelColor(i, color);         //  Set pixel's color (in RAM)
    strip.show();                          //  Update strip to match
    delay(wait);                           //  Pause for a moment
  }
}

// Theater-marquee-style chasing lights. Pass in a color (32-bit value,
// a la strip.Color(r,g,b) as mentioned above), and a delay time (in ms)
// between frames.
void theaterChase(uint32_t color, int wait) {
  for (int a = 0; a < 10; a++) {  // Repeat 10 times...
    for (int b = 0; b < 3; b++) { //  'b' counts from 0 to 2...
      strip.clear();         //   Set all pixels in RAM to 0 (off)
      // 'c' counts up from 'b' to end of strip in steps of 3...
      for (int c = b; c < strip.numPixels(); c += 3) {
        strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
      }
      strip.show(); // Update strip with new contents
      delay(wait);  // Pause for a moment
    }
  }
}

// Rainbow cycle along whole strip. Pass delay time (in ms) between frames.
void rainbow(int wait) {
  // Hue of first pixel runs 5 complete loops through the color wheel.
  // Color wheel has a range of 65536 but it's OK if we roll over, so
  // just count from 0 to 5*65536. Adding 256 to firstPixelHue each time
  // means we'll make 5*65536/256 = 1280 passes through this loop:
  for (long firstPixelHue = 0; firstPixelHue < 5 * 65536; firstPixelHue += 256) {
    // strip.rainbow() can take a single argument (first pixel hue) or
    // optionally a few extras: number of rainbow repetitions (default 1),
    // saturation and value (brightness) (both 0-255, similar to the
    // ColorHSV() function, default 255), and a true/false flag for whether
    // to apply gamma correction to provide 'truer' colors (default true).
    strip.rainbow(firstPixelHue);
    // Above line is equivalent to:
    // strip.rainbow(firstPixelHue, 1, 255, 255, true);
    strip.show(); // Update strip with new contents
    delay(wait);  // Pause for a moment
  }
}

// Rainbow-enhanced theater marquee. Pass delay time (in ms) between frames.
void theaterChaseRainbow(int wait) {
  int firstPixelHue = 0;     // First pixel starts at red (hue 0)
  for (int a = 0; a < 30; a++) {  // Repeat 30 times...
    for (int b = 0; b < 3; b++) { //  'b' counts from 0 to 2...
      strip.clear();         //   Set all pixels in RAM to 0 (off)
      // 'c' counts up from 'b' to end of strip in increments of 3...
      for (int c = b; c < strip.numPixels(); c += 3) {
        // hue of pixel 'c' is offset by an amount to make one full
        // revolution of the color wheel (range 65536) along the length
        // of the strip (strip.numPixels() steps):
        int      hue = firstPixelHue + c * 65536L / strip.numPixels();
        uint32_t color = strip.gamma32(strip.ColorHSV(hue)); // hue -> RGB
        strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
      }
      strip.show();                // Update strip with new contents
      delay(wait);                 // Pause for a moment
      firstPixelHue += 65536 / 90; // One cycle of color wheel over 90 frames
    }
  }
}

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Name: NeopixelTest2.ino

Created: 10/7/2025 5:35:59 PM

Author: FRANK_XPS_9530\Frank

// A basic everyday NeoPixel strip test program.

// NEOPIXEL BEST PRACTICES for most reliable operation:

// - Add 1000 uF CAPACITOR between NeoPixel strip's + and - connections.

// - MINIMIZE WIRING LENGTH between microcontroller board and first pixel.

// - NeoPixel strip's DATA-IN should pass through a 300-500 OHM RESISTOR.

// - AVOID connecting NeoPixels on a LIVE CIRCUIT. If you must, ALWAYS

// connect GROUND (-) first, then +, then data.

// - When using a 3.3V microcontroller with a 5V-powered NeoPixel strip,

// a LOGIC-LEVEL CONVERTER on the data line is STRONGLY RECOMMENDED.

// (Skipping these may work OK on your workbench but can fail in the field)

#include <Adafruit_NeoPixel.h>

#ifdef __AVR__

#include <avr/power.h> // Required for 16 MHz Adafruit Trinket

#endif

// Which pin on the Arduino is connected to the NeoPixels?

// On a Trinket or Gemma we suggest changing this to 1:

#define LED_PIN 6

// How many NeoPixels are attached to the Arduino?

//#define LED_COUNT 60

#define LED_COUNT 3

// Declare our NeoPixel strip object:

//Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

//Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_RGBW + NEO_KHZ800);

//Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_WRGB + NEO_KHZ800);

//Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_RGBW + NEO_KHZ800);

Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_RGBW + NEO_KHZ800);

// Argument 1 = Number of pixels in NeoPixel strip

// Argument 2 = Arduino pin number (most are valid)

// Argument 3 = Pixel type flags, add together as needed:

// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)

// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)

// NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)

// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)

// NEO_RGBW Pixels are wired for RGBW bitstream (NeoPixel RGBW products)

// setup() function -- runs once at startup --------------------------------

void setup()

{

Serial.begin(115200);

Serial.println("In Setup");

// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.

// Any other board, you can remove this part (but no harm leaving it):

#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)

clock_prescale_set(clock_div_1);

#endif

// END of Trinket-specific code.

strip.begin();

// INITIALIZE NeoPixel strip object (REQUIRED)

Serial.println("Set all LEDs OFF");

strip.show(); // Turn OFF all pixels ASAP

//delay(2000);

strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255)

}

// loop() function -- runs repeatedly as long as board is on ---------------

void loop()

{

Serial.println("Set all LEDs OFF");

strip.fill(0,0, LED_COUNT);

strip.show(); // Turn OFF all pixels ASAP

delay(500);

// Fill along the length of the strip in various colors...

Serial.println("colorWipe");

colorWipe(strip.Color(255, 0, 0), 50); // Red

delay(100);

colorWipe(strip.Color(0, 255, 0), 50); // Green

delay(100);

colorWipe(strip.Color(0, 0, 255), 50); // Blue

delay(500);

Serial.println("Set all LEDs OFF");

strip.fill(0, 0, LED_COUNT);

strip.show(); // Turn OFF all pixels ASAP

delay(500);

//// Do a theater marquee effect in various colors...

//Serial.println("theaterChase");

//theaterChase(strip.Color(127, 127, 127), 50); // White, half brightness

//theaterChase(strip.Color(127, 0, 0), 50); // Red, half brightness

//theaterChase(strip.Color(0, 0, 127), 50); // Blue, half brightness

//Serial.println("Set all LEDs OFF");

//strip.fill(0, 0, LED_COUNT);

//strip.show(); // Turn OFF all pixels ASAP

//delay(500);

Serial.println("rainbow");

rainbow(10); // Flowing rainbow cycle along the whole strip

Serial.println("Set all LEDs OFF");

strip.fill(0, 0, LED_COUNT);

strip.show(); // Turn OFF all pixels ASAP

delay(500);

Serial.println("theaterChaseRainbow");

theaterChaseRainbow(10); // Rainbow-enhanced theaterChase variant

}

// Some functions of our own for creating animated effects -----------------

// Fill strip pixels one after another with a color. Strip is NOT cleared

// first; anything there will be covered pixel by pixel. Pass in color

// (as a single 'packed' 32-bit value, which you can get by calling

// strip.Color(red, green, blue) as shown in the loop() function above),

// and a delay time (in milliseconds) between pixels.

void colorWipe(uint32_t color, int wait) {

for (int i = 0; i < strip.numPixels(); i++) { // For each pixel in strip...

strip.setPixelColor(i, color); // Set pixel's color (in RAM)

strip.show(); // Update strip to match

delay(wait); // Pause for a moment

}

// Theater-marquee-style chasing lights. Pass in a color (32-bit value,

// a la strip.Color(r,g,b) as mentioned above), and a delay time (in ms)

// between frames.

void theaterChase(uint32_t color, int wait) {

for (int a = 0; a < 10; a++) { // Repeat 10 times...

for (int b = 0; b < 3; b++) { // 'b' counts from 0 to 2...

strip.clear(); // Set all pixels in RAM to 0 (off)

// 'c' counts up from 'b' to end of strip in steps of 3...

for (int c = b; c < strip.numPixels(); c += 3) {

strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'

}

strip.show(); // Update strip with new contents

delay(wait); // Pause for a moment

}

// Rainbow cycle along whole strip. Pass delay time (in ms) between frames.

void rainbow(int wait) {

// Hue of first pixel runs 5 complete loops through the color wheel.

// Color wheel has a range of 65536 but it's OK if we roll over, so

// just count from 0 to 5*65536. Adding 256 to firstPixelHue each time

// means we'll make 5*65536/256 = 1280 passes through this loop:

for (long firstPixelHue = 0; firstPixelHue < 5 * 65536; firstPixelHue += 256) {

// strip.rainbow() can take a single argument (first pixel hue) or

// optionally a few extras: number of rainbow repetitions (default 1),

// saturation and value (brightness) (both 0-255, similar to the

// ColorHSV() function, default 255), and a true/false flag for whether

// to apply gamma correction to provide 'truer' colors (default true).

strip.rainbow(firstPixelHue);

// Above line is equivalent to:

// strip.rainbow(firstPixelHue, 1, 255, 255, true);

strip.show(); // Update strip with new contents

delay(wait); // Pause for a moment

}

// Rainbow-enhanced theater marquee. Pass delay time (in ms) between frames.

void theaterChaseRainbow(int wait) {

int firstPixelHue = 0; // First pixel starts at red (hue 0)

for (int a = 0; a < 30; a++) { // Repeat 30 times...

for (int b = 0; b < 3; b++) { // 'b' counts from 0 to 2...

strip.clear(); // Set all pixels in RAM to 0 (off)

// 'c' counts up from 'b' to end of strip in increments of 3...

for (int c = b; c < strip.numPixels(); c += 3) {

// hue of pixel 'c' is offset by an amount to make one full

// revolution of the color wheel (range 65536) along the length

// of the strip (strip.numPixels() steps):

int hue = firstPixelHue + c * 65536L / strip.numPixels();

uint32_t color = strip.gamma32(strip.ColorHSV(hue)); // hue -> RGB

strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'

}

strip.show(); // Update strip with new contents

delay(wait); // Pause for a moment

firstPixelHue += 65536 / 90; // One cycle of color wheel over 90 frames

}

Filament Load/Unload macros – and others?

When I tried to do a filament unload, the toolhead promptly drove itself right into the dock – oops! It was at this point that I realized I really didn’t know what I was doing, and had to get A LOT smarter. The filament unload macro (and surely many others) uses print bed size information from printer.cfg. gcode_macro UNLOAD_FILAMENT calls a macro called ‘FRONT’ to move the toolhead to the front center of the print bed, as shown below:

[gcode_macro FRONT]
description: Moves the toolhead to the front
gcode:
  CHOME
  {% set x_center = printer.toolhead.axis_maximum.x|float / 2.0 %}
  {% set y_center = printer.toolhead.axis_maximum.y|float / 2.0 %}
  G90
  G1 X{x_center} Y10 F7800

[gcode_macro FRONT]

description: Moves the toolhead to the front

gcode:

CHOME

{% set x_center = printer.toolhead.axis_maximum.x|float / 2.0 %}

{% set y_center = printer.toolhead.axis_maximum.y|float / 2.0 %}

G90

G1 X{x_center} Y10 F7800

As can be seen in the above code, the line “G1 X{x_center} Y10 F7800” uses the variable ‘x_center’, but goes to Y = 10, which is why it drives into the dock. This macro should really use something like “Y{printer.position_max – 10}, where ‘printer.position_max’ changes depending on whether or not the dock is present (i.e. on the value of the ‘variable_dock’ variable in ‘gcode_macro _home’)

11 October 2025 Update:

The above issue ran me down a rabbit hole from which I have just emerged – dirty but victorious. Although this crash problem could have been fixed easily by just changing ‘Y10’ to ‘Y110’, I was worried about other places where ‘magic numbers’ might be lurking. And then this got me thinking about all those places in the code where ‘printer.toolhead.axis_maximum.y’ is used, as this value doesn’t currently get changed when CONFIG_TOGGLE is executed.

So, I posed this problem to Grok as follows:

I have the MissChanger toolchanger mod installed. This mod uses a macro called CONFIG_TOGGLE to modify some printer.cfg parameters to account for the approximately 130mm at the front of the build plate occluded by the toolhead docking assembly, The python function ‘klipper-toolchanger/klipper/extras/config_switch.py’ manages this by replacing a section of printer.cfg with either the contents of ‘printer_data/config/config/config_no_dock.cfg’ or ‘printer_data/config/config/config_wt_dock.cfg’ I have attached copies of ‘printer.cfg’, ‘config_wt_dock.cfg’ and ‘config_no_dock.cfg’. It looks like the switch code should modify the printer object’s minimum_y value (derived from the stepper_y section’s position_max) instead of ( or maybe in addition to) the ‘variable_xh’ value in printer.cfg, as the printer object’s values are used everywhere in the code. What do you think?

Amazingly, Grok not only agreed with the idea in principal, but went on to digest the files I had provided and then produce a complete step-by-step procedure for implementing the idea, including complete ‘config_switch files. Grok even analyzed ‘klipper-toolchanger/klipper/extras/config_switch.py’ and figured out that the [stepper_y] and [tmc5160 stepper_y] sections would have to be moved below the ‘;< # Section Variable marker’ line in printer.cfg so that ‘config_switch.py’ could modify the ‘position_min:’ value appropriately. And Grok did the whole thing in just a few minutes! To say that I was blown away by this would be to hugely understate the impact this had on me – wow!

Armed with Grok’s step-by-step plan, I was able (after more ‘running around in circles’ than I care to admit) come up with a complete working set of files to support ‘with_dock’ and ‘without_dock’ configuration switching.

At this point I can switch from the ‘dock module installed’ to the ‘dock module removed’ condition freely. It remains to be seen whether I can now build on that to get to a fully functional dual-toolhead system.

16 October 2025 Update:

I was away for a while, but I’m back now. I read through my notes above, and starting from there will try to make a bit more progress. After getting the ‘config_toggle’ to work, I’m going to try to get the current toolhead (gray shell) working to the point of doing a test print. DON’T FORGET TO MAKE SURE THE ‘CONFIG_TOGGLE’ state matches the actual physical state (docking assembly present or not)!

Note: If you get the error “failed to detect active tool” after a head-banging episode, it is probably because the power was cycled with the toolhead resting on the print bed with the z_axis sensor in the ‘triggered’ state – apparently this prevents the toolhead from being ‘active’. Manually raise the gantry sufficiently to UNtrigger the sensor (blue LED changes to RED). Don’t worry about keeping the gantry level as this will be done later.

In the ‘Dock Installed’ configuraion, I got the Home_all to work, but the gantry-level failed with an ‘out of bounds’ error. This was due to the config_wt_dock.cfg file having ‘110’ as the min Y, but ‘position_min’ in [stepper_y] was set to 130 – oops. I fixed this by setting both numbers to 120 and did ‘Save&Restart’. Then I did *two* ‘CONFIG_TOGGLES’ and re-checked. OOPS! no change to ‘printer.cfg’ – how can this be?

I went back into config_wt_dock.cfg and saw that the numbers had not changed – so what happenec? Checked config_no_dock.cfg and those numbers are OK (25 for min quad level move in Y, position_min = 0 in [stepper_y]).

Did ONE Config_Toggle, and I see the value changed to the ‘no_dock’ values. Did a second one, and now the values are ‘110’ and ‘130’ again, even though I changed them to 120 & 120 in config_wt_dock.cfg. No, they are still 110 & 130 in config_wt_dock.cfg. I edited them again, verified that they were still correct after a save, then did a Save & Restart and checked again. This time they are correct. Oooh, I have a headache! I did a CONFIG_TOGGLE and verified the ‘no_dock’ numbers were correct, but when I did another CONFIG_TOGGLE, not only were the ‘wt_dock’ numbers wrong in printer.cfg, they were also wrong in /config/config_wt_dock.cfg! Something is editing (or reverting?) the wt_dock file

OK, the problem was that CONFIG_TOGGLE calls CONFIG_SAVE before anything else, and CONFIG_SAVE, writes the dock-related contents of printer.cfg to ‘config_wt_dock’ or ‘config_no_dock’ depending on the value (True or False) of the ‘variable_dock:’ parameter. Now fixed.

So now HOME_ALL and QUAD_GANTRY_LEVEL both worked as expected in the ‘with dock’ configuration. So now doing the ‘Calibrate reference z-offset’ step. *should* use the value ‘130’ (min_y = 120 + 10 = 130). YES! It did – and I’m getting a successful print – YAY!

The first test print required a ‘fine-tune’ adjustment of +0.350 to get the right amount of ‘squish’. When the print completed, I accepted the change, and this modified the z-offset to -2.000 (was -1.650). The second test print was OK without any fine-tuning.

I would like to have the toolhead go to Z = 225 after the print has finished but, if possible, do this only for the ‘with_dock’ configuration. I modified printer.cfg to put the entire PRINT_END macro just below the ‘variables’ marker, and then changed the finish z-axis position to 225. Then I ran a test print and this worked – the toolhead climbed to 225, pulling the dock assembly with it so I could easily access the finished print. Then I did a ‘SAVE_CONFIG_MODE’ from the console to write the new printer.cfg contents to the ‘config_wt_dock.cfg’ file. I checked this file and verified that the PRINT_END macro had indeed been saved to it. Then I switched to the ‘no-dock’ configuration, again moved the PRINT_END macro below the variable marker, changed the ending z position to Z25, and ran SAVE_CONFIG_MODE to write it out to ‘config_no_dock’.

Then I did a ‘test print, to verify that the PRINT_END macro works as intended in this config.

18 October 2025 Update:

I couldn’t get the TEST_DOCK operation to work. I kept getting ‘move out of bounds’ errors even though I had executed the STOP_TOOL_PROBE_CRASH_DETECTION macro. This worked before, so I was more than a little bit confused. When I asked Grok about this, he maintained that the STOP_TOOL_PROBE_CRASH_DETECTION has only a ‘local’ (whatever that means) effect – the hardware bounds listed in the config file are still checked and honored. Just now it came to me that I caused this problem when I modified the configuration toggle mechanism to dynamically modify the ‘position_min’ variable in [stepper_y]

[stepper_y]
step_pin: PF15
dir_pin: !PF14
enable_pin: !PE9
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC2
position_min: 120 #Dock installed

[stepper_y]

step_pin: PF15

dir_pin: !PF14

enable_pin: !PE9

rotation_distance: 40

microsteps: 32

full_steps_per_rotation:400 #set to 200 for 1.8 degree stepper

endstop_pin: PC2

position_min: 120 #Dock installed

I thought I was being very clever, but apparently not clever enough for klipper!

19 October 2025 Update:

When I asked Grok about this issue, it gave me a pretty detailed explanation why the previous ‘clever idea’ didn’t (and won’t) work. Here is Grok’s response:

To address your issue with position_min blocking docking operations while still leveraging printer.toolhead.axis_minimum.y (and similar) for general macro consistency, the core challenge is that position_min enforces a hard, system-wide limit on all moves—it’s static after startup and can’t be dynamically toggled or selectively bypassed for specific macros without workarounds. Based on Klipper’s documentation and community discussions, there are no built-in ways to change it at runtime or ignore it per-macro safely. However, here’s a viable strategy that balances your goals, with options from safe (recommended) to more advanced/risky.Recommended Approach: Use Soft Limits with Full Hardware RangeRevert position_min to 0 in both toggle files (config_no_dock.cfg and config_wt_dock.cfg) to allow full Y-axis access at the hardware level—this ensures docking macros can always succeed without errors, even mid-print. Then, enforce an “effective” minimum Y (your occlusion value, e.g., 130) as a soft limit via macro variables and conditionals. This propagates dynamically without magic numbers by referencing a single variable, while still using the printer object’s actual axis_minimum.y (now always 0) as a base.

Step 1: Update Toggle Files for Full Range

In both config_no_dock.cfg and config_wt_dock.cfg, set [stepper_y] position_min: 0 (keep other values like position_max: 310).
This makes printer.toolhead.axis_minimum.y always 0 after restart, avoiding any hard bounds errors during docking.

Step 2: Define an Effective Min Y Variable. Add or update a global variable in your toggle files (e.g., in [gcode_macro _static_variable] or a new [gcode_macro _limits]). Use variable_dock to set an “effective_min_y”:

[gcode_macro _limits]
variable_effective_min_y: {% if printer["gcode_macro _home"].dock %} 130.0 {% else %} printer.toolhead.axis_minimum.y {% endif %}  # Your occlusion value; use 110 if that's exact
gcode:  # Empty, just for variables

Place this in the swappable section of both toggle files (after the marker).
Now, printer[“_limits”].effective_min_y acts as your dynamic, dock-aware min Y—it’s 130 when docked (soft-enforcing occlusion for print ops) and 0 otherwise.
After toggling/restarting, this propagates to all macros without hardcoding 130 everywhere.

Step 3: Update Macros to Use the Effective MinReplace direct references to printer.toolhead.axis_minimum.y or hard Y values with {printer[“_limits”].effective_min_y} (or add offsets as needed). Examples:

Prime Line (e.g., in PRINT_START or a prime macro):
{% set prime_y = printer["_limits"].effective_min_y + 5 %} # Safe offset from effective min
G1 X{printer.toolhead.axis_maximum.x / 2} Y{prime_y} F7800 # Prime at front if no dock, or just above occlusion if docked
Parking (e.g., in PAUSE or M600):G1 X{printer.toolhead.axis_maximum.x / 2} Y{printer["_limits"].effective_min_y + 5} F6000 # Parks safely above effective min
Other Macros: For any that position near front (e.g., nozzle clean, unload), use similar: Y{printer[“_limits”].effective_min_y + offset}.
Keep [bed_mesh] and [quad_gantry_level] toggling as-is—they already use high min Y (e.g., 110) when docked to avoid probing occluded areas.

Benefits and Trade-offs

Keeps Using Printer Object: You still reference printer.toolhead.axis_minimum.y as a base (it’s now reliably 0), but layer the effective value on top for dock awareness—no magic numbers scattered around.
Docking Succeeds: Full range allows low-Y moves without errors.
Safety: Soft limits prevent accidental print/probe in occluded areas via macros, but won’t block invalid custom G-code (e.g., manual G0 Y10 would still work—add warnings if needed).
No Restart Mid-Print: Toggle only when switching dock install state (e.g., hardware changes).
Update your slicer profiles to match effective build volume (Y min 130 when docked) to avoid sliced violations.

This is the safest, most maintainable way without risking hardware.

It occurred to me that rather than modifying the dock & no-dock toggle files per Step1, I could simply move the [stepper_y] & [tmc5160 stepper_y] sections back above the variable marker where they started and remove the sections from both the dock & no-dock config files. I checked this with Grok, and he was OK with that. So, Step 1 – complete.

Step2: Grok said the [gcode_macro _limits] section could go anywhere ABOVE the toggle marker, so I put it JUST above the marker, with a comment. I also changed ‘130’ to ‘120’ as I know it works.

Other macros that needed to be modified:

Prime line code in [gcode_macro PRINT_START]
Front position in [gcode_macro FRONT]: I discovered that past-Frank had shifted this macro into the ‘Session Variables’ section (presumably so the y-value could be changed to reflect the ‘dock/no-dock’ configurations), but the corresponding macros in ‘config_wt_dock’ and ‘config_no_dock’ weren’t any different than the original version – oops!. Moved the CHOME & FRONT macros back to their original positions above the ‘Session Variables’ marker and changed the y value in ‘FRONT’ from {% set y_center = printer.toolhead.axis_maximum.y|float / 2.0 %} to {% set y_front = printer[“_limits”].effective_min_y + 5 %} and ‘G1 X{x_center} Y{y_center} F7800’ to ‘G1 X{x_center} Y{y_front} F7800’. Also added a statement to send the FRONT x,y pos to the display.
Removed the CHOME & FRONT macros from ‘dock’ & ‘no-dock config files (and moved the ‘#include'[include 251003_T0-Nitehawk-Revo-LDO.cfg]’ to the top)

Now I will just have to play with the printer for a while and see what happens. Fortunately by this time I have a pretty good understanding of how all the bells and whistles work. As one more safety measure, I have included printer.cfg, config_wt_dock, and config_no_dock here:

config_wt_dock.cfg:

#;<    # Section Variable marker

[gcode_macro _limits]
variable_effective_min_y: 120.0 #this value gets changed to '0.0' in 'config_no_dock'
gcode:  # Empty, just for variables


#10/17/25 gfp: PRINT_END moved here to see if I can modify end Z position for only the 'with_dock' configuration
[gcode_macro PRINT_END]
#   Use PRINT_END for the slicer ending script - please customise for your slicer of choice
gcode:
    # safe anti-stringing move coords
    {% set th = printer.toolhead %}
    {% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}
    {% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}
    {% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}
    
    SAVE_GCODE_STATE NAME=STATE_PRINT_END
    
    M400                           ; wait for buffer to clear
    G92 E0                         ; zero the extruder
    G1 E-5.0 F1800                 ; retract filament
    
    TURN_OFF_HEATERS
    
    G90                                      ; absolute positioning
    G0 X{x_safe} Y{y_safe} Z{z_safe} F20000  ; move nozzle to remove stringing
    ;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600  ; park nozzle at rear
    G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600  ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end
    G0 Z225 F3600  ; 08/09/25 gfp adj to raise extruder 25mm   
    M107                                     ; turn off fan
    
    BED_MESH_CLEAR
    RESTORE_GCODE_STATE NAME=STATE_PRINT_END


---------------------------------------------------------------
[include 251003_T0-Nitehawk-Revo-LDO.cfg]
#---------------------------------------------------------------
#gfp 09/19/25 edited for 300x300 bed
[gcode_macro _home]
variable_xh: 150.0
variable_yh: 205.0 #Dock installed
# Dock is installed: True or False
variable_dock: True
gcode:
#---------------------------------------------------------------

#05/30/25 added gfp
[bed_mesh]
speed: 120
horizontal_move_z: 5
mesh_min: 30, 120 #10/17/25 Dock Installed
mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5
zero_reference_position: 150,205 #Dock installed

																	   

#gfp 09/19/25 moved here per MissChanger setup instructions
[quad_gantry_level]

#--------------------------------------------------------------------   
##  Gantry Corners for 300mm Build
##  Uncomment for 300mm build
gantry_corners:
   -60,-10
   360,370

##  Probe points
points: #Dock installed	   
   50,120 
   50,225
   250,225
   250,120
   
##  A Stepper - Right
##  Connected to HV STEPPER 1
##  Endstop connected to Y-ENDSTOP

#10/19/25 gfp moved [stepper_y]&[tmc5160 stepper_y] back to their original positions
#         above the variable marker

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -2.000000
#*#
#*# [extruder]
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	  -0.142158, -0.004658, 0.010342, -0.024658, -0.079658
#*# 	  -0.082158, -0.000908, 0.100342, 0.089092, 0.025342
#*# 	  -0.054658, 0.046592, 0.052842, 0.014092, -0.034658
#*# 	  -0.188408, -0.058408, -0.033408, 0.050342, 0.006592
#*# 	  -0.187158, -0.134658, -0.113408, -0.120908, -0.142158
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 120.0
#*# max_y = 250.0
#*#
#*# [tool_probe_endstop]
#*# z_offset = -2.000

100

101

102

103

104

105

106

107

108

109

110

111

112

113

#;< # Section Variable marker

[gcode_macro _limits]

variable_effective_min_y: 120.0 #this value gets changed to '0.0' in 'config_no_dock'

gcode: # Empty, just for variables

#10/17/25 gfp: PRINT_END moved here to see if I can modify end Z position for only the 'with_dock' configuration

[gcode_macro PRINT_END]

# Use PRINT_END for the slicer ending script - please customise for your slicer of choice

gcode:

# safe anti-stringing move coords

{% set th = printer.toolhead %}

{% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}

{% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}

{% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}

SAVE_GCODE_STATE NAME=STATE_PRINT_END

M400 ; wait for buffer to clear

G92 E0 ; zero the extruder

G1 E-5.0 F1800 ; retract filament

TURN_OFF_HEATERS

G90 ; absolute positioning

G0 X{x_safe} Y{y_safe} Z{z_safe} F20000 ; move nozzle to remove stringing

;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600 ; park nozzle at rear

G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600 ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end

G0 Z225 F3600 ; 08/09/25 gfp adj to raise extruder 25mm

M107 ; turn off fan

BED_MESH_CLEAR

RESTORE_GCODE_STATE NAME=STATE_PRINT_END

---------------------------------------------------------------

[include 251003_T0-Nitehawk-Revo-LDO.cfg]

#---------------------------------------------------------------

#gfp 09/19/25 edited for 300x300 bed

[gcode_macro _home]

variable_xh: 150.0

variable_yh: 205.0 #Dock installed

# Dock is installed: True or False

variable_dock: True

gcode:

#---------------------------------------------------------------

#05/30/25 added gfp

[bed_mesh]

speed: 120

horizontal_move_z: 5

mesh_min: 30, 120 #10/17/25 Dock Installed

mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5

zero_reference_position: 150,205 #Dock installed

#gfp 09/19/25 moved here per MissChanger setup instructions

[quad_gantry_level]

#--------------------------------------------------------------------

## Gantry Corners for 300mm Build

## Uncomment for 300mm build

gantry_corners:

-60,-10

360,370

## Probe points

points: #Dock installed

50,120

50,225

250,225

250,120

## A Stepper - Right

## Connected to HV STEPPER 1

## Endstop connected to Y-ENDSTOP

#10/19/25 gfp moved [stepper_y]&[tmc5160 stepper_y] back to their original positions

# above the variable marker

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [tool_probe T0]

#*# z_offset = -2.000000

#*#

#*# [extruder]

#*#

#*# [bed_mesh default]

#*# version = 1

#*# points =

#*# -0.142158, -0.004658, 0.010342, -0.024658, -0.079658

#*# -0.082158, -0.000908, 0.100342, 0.089092, 0.025342

#*# -0.054658, 0.046592, 0.052842, 0.014092, -0.034658

#*# -0.188408, -0.058408, -0.033408, 0.050342, 0.006592

#*# -0.187158, -0.134658, -0.113408, -0.120908, -0.142158

#*# x_count = 5

#*# y_count = 5

#*# mesh_x_pps = 2

#*# mesh_y_pps = 2

#*# algo = lagrange

#*# tension = 0.2

#*# min_x = 30.0

#*# max_x = 275.0

#*# min_y = 120.0

#*# max_y = 250.0

#*#

#*# [tool_probe_endstop]

#*# z_offset = -2.000

config_no_dock.cfg:

#;<    # Section Variable marker
#---------------------------------------------------------------

#---------------------------------------------------------------
[include 251003_T0-Nitehawk-Revo-LDO.cfg]
#---------------------------------------------------------------

####################################################################################
##   10/19/25 [gcode_macro _limits] section added
##   See 19 October blog update for details
####################################################################################

[gcode_macro _limits]
variable_effective_min_y: 0.0 #this value gets changed to '120.0' in 'config_wt_dock'
gcode:  # Empty, just for variables

[gcode_macro PRINT_END]
#   Use PRINT_END for the slicer ending script - please customise for your slicer of choice
gcode:
    # safe anti-stringing move coords
    {% set th = printer.toolhead %}
    {% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}
    {% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}
    {% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}
    
    SAVE_GCODE_STATE NAME=STATE_PRINT_END
    
    M400                           ; wait for buffer to clear
    G92 E0                         ; zero the extruder
    G1 E-5.0 F1800                 ; retract filament
    
    TURN_OFF_HEATERS
    
    G90                                      ; absolute positioning
    G0 X{x_safe} Y{y_safe} Z{z_safe} F20000  ; move nozzle to remove stringing
    ;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600  ; park nozzle at rear
    G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600  ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end
    G0 Z25 F3600  #10/17/25 gfp No dock 
    M107                                     ; turn off fan
    
    BED_MESH_CLEAR
    RESTORE_GCODE_STATE NAME=STATE_PRINT_END
    
#---------------------------------------------------------------
#gfp 09/19/25 edited for 300x300 bed
[gcode_macro _home]
variable_xh: 150.0
variable_yh: 150.0 #Dock NOT installed
# Dock is installed: True or False
variable_dock: False
gcode:
#---------------------------------------------------------------

#05/30/25 added gfp
[bed_mesh]
speed: 120
horizontal_move_z: 5
mesh_min: 30, 35 #07/05/25 gfp: 30 was not enough for Y
mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5
zero_reference_position: 150,150 #for use with stock z endstop. Added 06/01/25 gfp

#gfp 09/19/25 moved here per MissChanger setup instructions
[quad_gantry_level]

#--------------------------------------------------------------------   
##  Gantry Corners for 300mm Build
##  Uncomment for 300mm build
gantry_corners:
   -60,-10
   360,370
##  Probe points

points: #Dock NOT installed
   50,25
   50,225
   250,225
   250,25
   
#10/19/25 removed [stepper_y] & [tmc5160 stepper_y] sections - no longer needed in 'toggle' files

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -0.563750
#*#
#*# [extruder]
#*# control = pid
#*# pid_kp = 26.213
#*# pid_ki = 1.304
#*# pid_kd = 131.721
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	  -0.028569, 0.045181, 0.051431, 0.016431, -0.047319
#*# 	  -0.013569, 0.017681, 0.015181, 0.010181, -0.034819
#*# 	  -0.006069, -0.001069, 0.000181, -0.004819, -0.011069
#*# 	  -0.067319, -0.023569, -0.001069, -0.017319, -0.041069
#*# 	  -0.006069, -0.023569, -0.037319, -0.044819, -0.078569
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 35.0
#*# max_y = 250.0

100

101

102

103

104

105

106

107

108

109

110

111

112

#;< # Section Variable marker

#---------------------------------------------------------------

[include 251003_T0-Nitehawk-Revo-LDO.cfg]

#---------------------------------------------------------------

####################################################################################

## 10/19/25 [gcode_macro _limits] section added

## See 19 October blog update for details

####################################################################################

[gcode_macro _limits]

variable_effective_min_y: 0.0 #this value gets changed to '120.0' in 'config_wt_dock'

gcode: # Empty, just for variables

[gcode_macro PRINT_END]

# Use PRINT_END for the slicer ending script - please customise for your slicer of choice

gcode:

# safe anti-stringing move coords

{% set th = printer.toolhead %}

{% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}

{% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}

{% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}

SAVE_GCODE_STATE NAME=STATE_PRINT_END

M400 ; wait for buffer to clear

G92 E0 ; zero the extruder

G1 E-5.0 F1800 ; retract filament

TURN_OFF_HEATERS

G90 ; absolute positioning

G0 X{x_safe} Y{y_safe} Z{z_safe} F20000 ; move nozzle to remove stringing

;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600 ; park nozzle at rear

G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600 ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end

G0 Z25 F3600 #10/17/25 gfp No dock

M107 ; turn off fan

BED_MESH_CLEAR

RESTORE_GCODE_STATE NAME=STATE_PRINT_END

#---------------------------------------------------------------

#gfp 09/19/25 edited for 300x300 bed

[gcode_macro _home]

variable_xh: 150.0

variable_yh: 150.0 #Dock NOT installed

# Dock is installed: True or False

variable_dock: False

gcode:

#---------------------------------------------------------------

#05/30/25 added gfp

[bed_mesh]

speed: 120

horizontal_move_z: 5

mesh_min: 30, 35 #07/05/25 gfp: 30 was not enough for Y

mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5

zero_reference_position: 150,150 #for use with stock z endstop. Added 06/01/25 gfp

#gfp 09/19/25 moved here per MissChanger setup instructions

[quad_gantry_level]

#--------------------------------------------------------------------

## Gantry Corners for 300mm Build

## Uncomment for 300mm build

gantry_corners:

-60,-10

360,370

## Probe points

points: #Dock NOT installed

50,25

50,225

250,225

250,25

#10/19/25 removed [stepper_y] & [tmc5160 stepper_y] sections - no longer needed in 'toggle' files

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [tool_probe T0]

#*# z_offset = -0.563750

#*#

#*# [extruder]

#*# control = pid

#*# pid_kp = 26.213

#*# pid_ki = 1.304

#*# pid_kd = 131.721

#*#

#*# [bed_mesh default]

#*# version = 1

#*# points =

#*# -0.028569, 0.045181, 0.051431, 0.016431, -0.047319

#*# -0.013569, 0.017681, 0.015181, 0.010181, -0.034819

#*# -0.006069, -0.001069, 0.000181, -0.004819, -0.011069

#*# -0.067319, -0.023569, -0.001069, -0.017319, -0.041069

#*# -0.006069, -0.023569, -0.037319, -0.044819, -0.078569

#*# x_count = 5

#*# y_count = 5

#*# mesh_x_pps = 2

#*# mesh_y_pps = 2

#*# algo = lagrange

#*# tension = 0.2

#*# min_x = 30.0

#*# max_x = 275.0

#*# min_y = 35.0

#*# max_y = 250.0

printer.cfg

[include mainsail.cfg]
## default marcros
[include misschanger_macros/config_switch.cfg]
[include misschanger_macros/homing.cfg]
[include misschanger_macros/nozzle_clean.cfg]
[include misschanger_macros/overwrite.cfg]
[include misschanger_macros/print_time_default.cfg]
[include misschanger_macros/tool_calibrate.cfg]
[include misschanger_macros/toolchanger.cfg]
[include misschanger_macros/offsets_adjust_record.cfg]
# ## optional default marcros
# [include misschanger_macros/tool_calibrate_extra.cfg]    # For the Nudge probe
## misschanger settings
[include misschanger_settings.cfg]
## Other macros
[include macro-general.cfg]
[include macro-testing.cfg]
# ...
# ...
# ...
[mcu]
##  Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify
##--------------------------------------------------------------------
serial: /dev/serial/by-id/usb-Klipper_stm32h743xx_2A001E000A51333038383535-if00
restart_method: command
##--------------------------------------------------------------------

####################################################################################
##	                         Others
####################################################################################
[config_switch]
[pause_resume]
[save_babies]
# ...
# ...
# ...

####################################################################################
##	                         Global Variables
####################################################################################
#--------------------------------------------------------------------
[gcode_macro _static_variable]
description: Global static variables that is used through out the configs
## Tool-head calibration
variable_calibration_probe_x: 241.237500     # X aproximate position of the calibration probe. CHANGE TO MATCH YOUR SET-UP
variable_calibration_probe_y: 329.825000     # Y aproximate position of the calibration probe. CHANGE TO MATCH YOUR SET-UP
variable_calibration_safe_z: 50.00           # Z aproximate safe position of the calibration probe. KEEP CONSERVATIVE TO AVOID COLLISION
variable_calibration_min_z: 30.00            # Z aproximate probe position of the calibration probe.
variable_probe_stable_time: 1000             # Time (in ms) to wait for calibration probe to reset. Default: 1000
variable_calibration_abs_z_seperately: 0     # "0" = False / "1" = True. For, the Nudge probe this should be '1'
variable_final_lift_z: 3                     # This must be the same as "final_lift_z" in [tools_calibrate] in misschanger_settings.cfg
## Cleaning dock
variable_clean_dock_x: 0                     # Set to "0" to disable. X aproximate position of the cleaning dock. CHANGE TO MATCH YOUR SET-UP.
variable_clean_speed: 7000                   # Don't set too high, the violent shaking may cause problems. CHANGE TO MATCH YOUR SET-UP.
variable_clean_temp: 200                     # Nozzle clean temperature.
variable_clean_threshold: 150.0              # The minimum perimeter of the print, below which no mid-print cleaning of the nozzle will occur.
## Always on crash detection
variable_alway_on_crash_detection: 0         # "0" = False (off) / "1" = True (on)
## For heatsoak macro
variable_heatsoak_temp: 0                    # Set to "0" to disable. Chamber temperature target for heat soak. REQUIRES [temperature_sensor Chamber] below.
## Dynamic thermal expansion compensation
variable_thermo_expand_offset: -0.080        # Maximum z offset for thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
variable_thermo_expand_temp_high: 70         # Chamber temp to apply maximum z offset for thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
variable_thermo_expand_temp_low: 0           # Set to "0" to disable. Chamber temp start applying thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
## Fan control
variable_nm_ciculation_speed: 1.00           # Nevermore Stealth Max fan speed in circulation mode
variable_nm_exhaust_speed: 1.00              # Nevermore Stealth Max fan speed in exhaust mode
variable_chamber_ciculation_speed: 0.25      # Chamber fan speed in chamber-heating mode
variable_chamber_temp_threshold: 91          # If bed temp is below this temperature, then don't enable chamber-heating mode
gcode:                                       # This is here to appease klipper
# ...
# ...
# ...
# ...
# ...
# ##########################################################################.
# ...        10/10/25 Added to report out macro variable values
# ##########################################################################.

[respond]
default_type: echo  # Options: echo (default, prefixes "echo: "), command (prefixes "// "), or error (prefixes "!! ")
# default_prefix: "custom:"  # Optional: Overrides default_type with a custom prefix string

[gcode_macro REPORT_EFFECTIVE_MIN_Y]
gcode:
  RESPOND MSG="Effective Min Y: {printer['gcode_macro _limits'].effective_min_y}"
# ...
# ...
[printer]
kinematics: corexy
max_velocity: 300  
#max_accel: 10000
max_accel: 15000 #gfp 08/12/25 per Ellis' tuning guide

max_z_velocity: 15          #Max 15 for 12V TMC Drivers, can increase for 24V
max_z_accel: 350
square_corner_velocity: 5.0

#####################################################################
#   X/Y Stepper Settings
#####################################################################

##  B Stepper - Left
##  Connected to HV STEPPER 0
##  Endstop connected to X-ENDSTOP
[stepper_x]
step_pin: PB10
dir_pin: !PB11
enable_pin: !PG0
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC1
position_min: 0
##--------------------------------------------------------------------

##  Uncomment below for 250mm build
#position_endstop: 250
#position_max: 250

##  Uncomment for 300mm build
position_endstop: 300
position_max: 300

##  Uncomment for 350mm build
#position_endstop: 350
#position_max: 350

##--------------------------------------------------------------------
homing_speed: 25   #Max 100
homing_retract_dist: 5
homing_positive_dir: true

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc5160 stepper_x]
cs_pin: PE15
spi_bus: spi4
#diag0_pin: ^!PG1
interpolate: false
run_current: 0.8
sense_resistor: 0.075
stealthchop_threshold: 0

[stepper_y]
step_pin: PF15
dir_pin: !PF14
enable_pin: !PE9
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC2
position_min: 0 #10/19/25 gfp returned to original value of '0'
##--------------------------------------------------------------------

##  Uncomment for 300mm build
position_endstop: 310
position_max: 310

##--------------------------------------------------------------------
homing_speed: 25  #Max 100
homing_retract_dist: 5
homing_positive_dir: true

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc5160 stepper_y]
cs_pin: PE11
spi_bus: spi4
#diag0_pin: ^!PE10
interpolate: false
run_current: 0.8
sense_resistor: 0.075
stealthchop_threshold: 0


#####################################################################
#   Z Stepper Settings
#####################################################################

## Z0 Stepper - Front Left
##  Connected to STEPPER 0
##  Endstop connected to Z-ENDSTOP
[stepper_z]
step_pin: PD4
dir_pin: !PD3
enable_pin: !PD7
rotation_distance: 40
gear_ratio: 80:16  
microsteps: 32
#endstop_pin: PC3
endstop_pin: probe:z_virtual_endstop #07/12/25 gfp chg for Voron Tap mod
##  Z-position of nozzle (in mm) to z-endstop trigger point relative to print surface (Z0)
##  (+) value = endstop above Z0, (-) value = endstop below
##  Increasing position_endstop brings nozzle closer to the bed
##  After you run Z_ENDSTOP_CALIBRATE, position_endstop will be stored at the very end of your config
#position_endstop: -0.5
##--------------------------------------------------------------------

##  Uncomment below for 250mm build
#position_max: 230

##  Uncomment below for 300mm build
position_max: 280

##  Uncomment below for 350mm build
#position_max: 330

##--------------------------------------------------------------------
position_min: -5
homing_speed: 8
second_homing_speed: 3
homing_retract_dist: 3

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z]
uart_pin: PD5
#diag_pin: ^!PD6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z1 Stepper - Rear Left
##  Connected to STEPPER 1
[stepper_z1]
step_pin: PC12
dir_pin: PC11
enable_pin: !PD2
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z1]
uart_pin: PD0
#diag_pin: ^!PD1
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z2 Stepper - Rear Right
##  Connected to STEPPER 2
[stepper_z2]
step_pin: PC9
dir_pin: !PC8
enable_pin: !PC10
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z2]
uart_pin: PA8
#diag_pin: ^!PA15
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z3 Stepper - Front Right
##  Connected to STEPPER 3
[stepper_z3]
step_pin: PG7
dir_pin: PG6
enable_pin: !PC7
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z3]
uart_pin: PG8
#diag_pin: ^!PC6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

[heater_bed]
##  SSR Pin - HEATBED
##  Thermistor - TH1
heater_pin: PG11
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: PA2
pullup_resistor: 2200
##  Adjust Max Power so your heater doesn't warp your bed. Rule of thumb is 0.4 watts / cm^2 .
## 7/5/25 gfp edited this section to suppress "Heater heater_bed not heating at expected rate" error
#max_power: 0.8
max_power: 0.8
min_temp: 0
max_temp: 130
#max_error: 150
#check_gain_time: 100
#hysteresis: 7
control: pid
pid_kp: 58.437
pid_ki: 2.347
pid_kd: 363.769

####################################################################################
##	                 Temperature Monitoring
####################################################################################
# [temperature_sensor Chamber]
# sensor_type: Generic 3950
# sensor_pin: PF4
# # ...
# # ...
# # ...

# ####################################################################################
# ##                  FAN
# ####################################################################################

#09/14/25 copied from 250830_SecondToolhead_printer.cfg

#####################################################################
#   TH
# #####################################################################
#[temperature_sensor chamber_temp]
#[temperature_sensor chamber] #06/16/25 gfp chg to match variable name in PRINT_START >90C 'IF' block
# [temperature_sensor Chamber] #09/14/25 gfp chg 'chamber' to 'Chamber'
# #gfp 09/14/25 This is the chamber thermistor used for *all* toolheads, so is in printer.cfg, but is 
# #actually connected to nhk0:gpio28

# ## Chamber Temperature - T1
# sensor_type: ATC Semitec 104NT-4-R025H42G
# sensor_pin: nhk0:gpio28
# min_temp: 0
# max_temp: 100
# gcode_id: chamber_th
#--------------------------------------------------------------------
[fan_generic fan_nevermore_stealthmax]
pin: PD13
max_power: 1.0
shutdown_speed: 0.0
cycle_time: 0.010
hardware_pwm: False
kick_start_time: 0.100
off_below: 0.05

#--------------------------------------------------------------------
# [fan_generic fan_chamber_heater]
# pin: PA8
# max_power: 1.0
# shutdown_speed: 0.0
# cycle_time: 0.010
# hardware_pwm: False
# kick_start_time: 0.100
# off_below: 0.05
# ...
# ...
# ...

#09/22/25 copied from 250830_OrigToolhead_printer.cfg
#####################################################################
#   LED Control
#####################################################################

## Chamber Lighting (Optional)
## Connected to LED-STRIP
[output_pin caselight]
pin: PE6
pwm:true
hardware_pwm: False
value: 0.20 #startup value
shutdown_value: 0
value:1
cycle_time: 0.00025



[gcode_macro PRINT_START]
																							   
gcode:
  # This part fetches data from your slicer. Such as bed, extruder, and chamber temps and size of your printer.
  {% set target_bed = params.BED|int %}
  {% set target_extruder = params.EXTRUDER|int %}
  {% set target_chamber = params.CHAMBER|default("45")|int %}
  {% set x_wait = printer.toolhead.axis_maximum.x|float / 2 %}
  {% set y_wait = printer.toolhead.axis_maximum.y|float / 2 %}

  ##  Uncomment for Beacon Contact (1 of 4 for beacon contact)
  #SET_GCODE_OFFSET Z=0                                 # Set offset to 0

  # Home the printer, set absolute positioning and update the Stealthburner LEDs.
  STATUS_HOMING                                         # Set LEDs to homing-mode
														  
  G28                                                   # Full home (XYZ)
  G90                                                   # Absolute position

  ##  Uncomment for bed mesh (1 of 2 for bed mesh)
  BED_MESH_CLEAR                                       # Clear old saved bed mesh (if any)

  # Check if the bed temp is higher than 90c - if so then trigger a heatsoak.
  {% if params.BED|int > 90 %}
    SET_DISPLAY_TEXT MSG="Bed: {target_bed}c"           # Display info on display
    STATUS_HEATING                                      # Set LEDs to heating-mode
    M106 S255                                           # Turn on the PT-fan

    ##  Uncomment if you have a Nevermore.
    #SET_PIN PIN=nevermore VALUE=1                      # Turn on the nevermore

    G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
    ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
    M190 S{target_bed}                                  # Set the target temp for the bed
    SET_DISPLAY_TEXT MSG="Heatsoak: {target_chamber}c"  # Display info on display
    TEMPERATURE_WAIT SENSOR="temperature_sensor chamber" MINIMUM={target_chamber}   # Waits for chamber temp

  # If the bed temp is not over 90c, then skip the heatsoak and just heat up to set temp with a 5 min soak
  {% else %}
    SET_DISPLAY_TEXT MSG="Bed: {target_bed}c"           # Display info on display
    STATUS_HEATING                                      # Set LEDs to heating-mode
    G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
    ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
    M190 S{target_bed}                                  # Set the target temp for the bed
    SET_DISPLAY_TEXT MSG="Soak for 5 min"               # Display info on display
    G4 P300000                                          # Wait 5 min for the bedtemp to stabilize
  {% endif %}

  # Heat hotend to 150c. This helps with getting a correct Z-home.
  SET_DISPLAY_TEXT MSG="Hotend: 150c"                   # Display info on display
  M109 S150                                             # Heat hotend to 150c

  ##  Uncomment for Beacon contact (2 of 4 for beacon contact)
  #G28 Z METHOD=CONTACT CALIBRATE=1                     # Calibrate z offset and beacon model

  ##  Uncomment for Trident (Z_TILT_ADJUST)
  #SET_DISPLAY_TEXT MSG="Leveling"                      # Display info on display
  #STATUS_LEVELING                                      # Set LEDs to leveling-mode
  #Z_TILT_ADJUST                                        # Level the printer via Z_TILT_ADJUST
  #G28 Z                                                # Home Z again after Z_TILT_ADJUST

  ##  Uncomment for V2.4 (Quad gantry level AKA QGL)
  SET_DISPLAY_TEXT MSG="Leveling"                      # Display info on display
  STATUS_LEVELING                                      # Set LEDs to leveling-mode
  QUAD_GANTRY_LEVEL                                    # Level the printer via QGL
  G28 Z                                                # Home Z again after QGL

  ##  Uncomment for bed mesh (2 of 2 for bed mesh)
  SET_DISPLAY_TEXT MSG="Bed mesh"                      # Display info on display
  STATUS_MESHING                                       # Set LEDs to bed mesh-mode
  BED_MESH_CALIBRATE                                   # Start the bed mesh (add ADAPTIVE=1) for adaptive bed mesh

  ## Uncomment for Beacon Contact (3 of 4 for beacon contact)
  #G28 Z METHOD=CONTACT CALIBRATE=0                     # Calibrate z offset only with hot nozzle

  # Heat up the hotend up to target via data from slicer
  SET_DISPLAY_TEXT MSG="Hotend: {target_extruder}c"     # Display info on display
  STATUS_HEATING                                        # Set LEDs to heating-mode
  G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
  ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
  M107                                                  # Turn off partcooling fan
  M109 S{target_extruder}                               # Heat the hotend to set temp

  ##   Uncomment for Beacon Contact (4 of 4 for beacon contact)
  #SET_GCODE_OFFSET Z=0.06                              # Add a little offset for hotend thermal expansion

  # Get ready to print by doing a primeline and updating the LEDs
  SET_DISPLAY_TEXT MSG="Printer goes brr"               # Display info on display
  STATUS_PRINTING                                       # Set LEDs to printing-mode
  #G0 X{x_wait - 50} Y4 F10000                           # Go to starting point
  #G0 X{x_wait - 50} Y10 F10000                          # Go to starting point: gfp 8/8/25 adj for MC added thickness
  #G0 X{x_wait - 50} Y15 F10000                          # Go to starting point: gfp 8/13/25 adj for MC added thickness

  #10/19/25 gfp: modified per Grok's 'effective_min_y strategy'
  #G0 X{x_wait - 50} Y{printer.toolhead.axis_minimum.y + 10} F10000 #10/17/25 gfp: use toolhead-specific y_min (see )
  {% set prime_y = printer["_limits"].effective_min_y + 5 %}  # Safe offset from effective min
  G1 X{printer.toolhead.axis_maximum.x / 2} Y{prime_y} F7800  # Prime at front if no dock, or just above occlusion if docked
  SET_DISPLAY_TEXT MSG="Primeline y= {printer.toolhead.axis_minimum.y + 10}"     # 10/17/25 gfp: Output to display

  G0 Z0.4                                               # Raise Z to 0.4
  G91                                                   # Incremental positioning 
  G1 X100 E20 F1000                                     # Primeline
  G90                                                   # Absolute position

  #10/17/25 GFP - PLACEHOLDER FOR PRINT_END MACRO 
  #10/19/25 gfp - moved CHOME & FRONT back here, and using {printer['gcode_macro _limits'].effective_min_y}
[gcode_macro CHOME]
description: Homes XYZ axis only if printer is in a non-homed state
gcode:
  {% if "xyz" not in printer.toolhead.homed_axes %}
    G28
  {% endif %}

[gcode_macro FRONT]
description: Moves the toolhead to the front
gcode:
  CHOME
  {% set x_center = printer.toolhead.axis_maximum.x|float / 2.0 %}

  #10/19/25 modified to respect y value 'dock' constraint 
#  {% set y_center = printer.toolhead.axis_maximum.y|float / 2.0 %}
    {% set y_front = printer["gcode_macro _limits"].effective_min_y + 5 %} # Safe offset from effective min

  G90
  #G1 X{x_center} Y10 F7800
  #G1 X{x_center} Y{y_center} F7800 #10/11/25 gfp modified to use y_center} vs hard-coded value
  G1 X{x_center} Y{y_front} F7800 #10/19/25 gfp modified to use y_front} for dock restriction
  SET_DISPLAY_TEXT MSG="FRONT pos = ({x_center}, {y_front})"

[gcode_macro _LOGO_PENDING]
gcode:
  SET_LED LED=rgb_light RED=0.15 GREEN=0.5 BLUE=0.75 WHITE=0 INDEX=1

[gcode_macro _LOGO_READY]
gcode:
  SET_LED LED=rgb_light RED=0.99 GREEN=0.0 BLUE=0.0 WHITE=0 INDEX=1

[gcode_macro _LOGO_OFF]
gcode:
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=1
  

[gcode_macro _HEADLIGHT_ON]
gcode:
  SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=2 TRANSMIT=0
  SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=3


[gcode_macro _HEADLIGHT_OFF]
gcode:
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=2 TRANSMIT=0
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=3
  

[gcode_macro UNLOAD_FILAMENT]
description: Unloads filament from toolhead
gcode:
  {% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}
  {% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}
  {% set CURRENT_TARGET = printer.extruder.target|float %}
  CHOME
  G91                         ; relative positioning
  G1 Z20                      ; move nozzle upwards
  FRONT                       ; move the toolhead to the front
  {% if EXTRUDER_TEMP != 0 %}
    ;_LOGO_PENDING
    STATUS_HEATING ;06/07/25 gfp chg to something that works
    SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}" 
    {% if CURRENT_TARGET < EXTRUDER_TEMP %}
      M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot
    {% endif %}
    TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach
  {% endif %}
  ;_LOGO_READY
  STATUS_READY ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Starting unload" 
  M83                         ; set extruder to relative mode
  G1 E10 F300                 ; extrude a little to soften tip
  G1 E-8 F3600                ; quickly retract a small amount to elimate stringing
  G4 P200                     ; pause for a short amount of time
  G1 E-50 F400                ; retract slowly the rest of the way
  G1 E-20 F300
  M400                        ; wait for moves to finish
  M117 Unload Complete!
  ;_LOGO_OFF
  STATUS_OFF ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Unload Complete" 

[gcode_macro LOAD_FILAMENT]
description: Loads new filament into toolhead
gcode:
  {% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}
  {% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}
  {% set CURRENT_TARGET = printer.extruder.target|float %}
  FRONT                       ; move the toolhead to the front
  {% if EXTRUDER_TEMP != 0 %}
    ;_LOGO_PENDING
    STATUS_HEATING ;06/07/25 gfp chg to something that works
    SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}" 

    {% if CURRENT_TARGET < EXTRUDER_TEMP %}
      M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot
    {% endif %}
    TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach
  {% endif %}
  ;_LOGO_READY
  STATUS_READY ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Starting unload" 
;  _HEADLIGHT_ON
  M83                         ; set extruder to relative mode
  G1 E50 F300                 ; extrude slowlyL
  G1 E50 F300
  M400                        ; wait for moves to finish
  M117 Load Complete!
  ;_LOGO_OFF
  STATUS_OFF ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Unload Complete" 
  ;_HEADLIGHT_OFF


;<---------------------- 06/17/25 gfp another try at color change using Ellis' macros ---------------------->
[pause_resume]

[gcode_macro PAUSE]
rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                                  ; disable filament sensor 06/17/25 gfp commented out
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        BASE_PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
#        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer["_limits"].effective_min_y + 5} F6000  # Parks safely above effective min
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro M600]
;rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                                  ; disable filament sensor 06/17/25 gfp commented out
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        ;BASE_PAUSE                                                                           ; pause print
        PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro RESUME]
rename_existing: BASE_RESUME
variable_zhop: 0
variable_etemp: 0
gcode:
    # Parameters
    {% set e = params.E|default(2.5)|int %}                                          ; hotend prime amount (in mm)

    {% if printer['pause_resume'].is_paused|int == 1 %}
        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                         ; disable filament sensor 06/17/25 gfp commented out
        #INITIAL_RGB                                                                 ; reset LCD color
        SET_IDLE_TIMEOUT TIMEOUT={printer.configfile.settings.idle_timeout.timeout}  ; set timeout back to configured value
        {% if etemp > 0 %}
            M109 S{etemp|int}                                                        ; wait for hotend to heat back up
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSEPARK MOVE=1 MOVE_SPEED=100                     ; go back to parked position in case toolhead was moved during pause (otherwise the return zhop can error)
        G91                                                                          ; relative positioning
        M83                                                                          ; relative extruder positioning
        {% if printer[printer.toolhead.extruder].temperature >= printer.configfile.settings.extruder.min_extrude_temp %}
            G1 Z{zhop * -1} E{e} F900                                                ; prime nozzle by E, lower Z back down
        {% else %}
            G1 Z{zhop * -1} F900                                                     ; lower Z back down without priming (just in case we are testing the macro with cold hotend)
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSE MOVE=1 MOVE_SPEED=60                          ; restore position
        BASE_RESUME                                                                  ; resume print
    {% endif %}

[gcode_macro TEST_SPEED]
# Home, get position, throw around toolhead, home again.
# If MCU stepper positions (first line in GET_POSITION) are greater than a full step different (your number of microsteps), then skipping occured.
# We only measure to a full step to accomodate for endstop variance.
# Example: TEST_SPEED SPEED=300 ACCEL=5000 ITERATIONS=10

description: Test for max speed and acceleration parameters for the printer. Procedure: Home -> ReadPositionFromMCU -> MovesToolhead@Vel&Accel -> Home -> ReadPositionfromMCU

gcode:
    # Speed
    {% set speed  = params.SPEED|default(printer.configfile.settings.printer.max_velocity)|int %}
    # Iterations
    {% set iterations = params.ITERATIONS|default(5)|int %}
    # Acceleration
    {% set accel  = params.ACCEL|default(printer.configfile.settings.printer.max_accel)|int %}
    # Minimum Cruise Ratio
    {% set min_cruise_ratio = params.MIN_CRUISE_RATIO|default(0.5)|float %}
    # Bounding inset for large pattern (helps prevent slamming the toolhead into the sides after small skips, and helps to account for machines with imperfectly set dimensions)
    {% set bound = params.BOUND|default(20)|int %}
    # Size for small pattern box
    {% set smallpatternsize = SMALLPATTERNSIZE|default(20)|int %}
    
    # Large pattern
        # Max positions, inset by BOUND
        {% set x_min = printer.toolhead.axis_minimum.x %}
        {% if x_min < 0 %}
            {% set x_min = 0 %}
        {% endif %}
    
        {% set y_min = printer.toolhead.axis_minimum.y %}
        {% if y_min < 0 %}
            {% set y_min = 0 %}
        {% endif %}
    
        {% set x_min = x_min + bound %}
        {% set x_max = printer.toolhead.axis_maximum.x - bound %}
        {% set y_min = y_min + bound %}
        {% set y_max = printer.toolhead.axis_maximum.y - bound %}
    
    # Small pattern at center
        # Find X/Y center point
        {% set x_center = (printer.toolhead.axis_minimum.x|float + printer.toolhead.axis_maximum.x|float ) / 2 %}
        {% set y_center = (printer.toolhead.axis_minimum.y|float + printer.toolhead.axis_maximum.y|float ) / 2 %}
        
        # Set small pattern box around center point
        {% set x_center_min = x_center - (smallpatternsize/2) %}
        {% set x_center_max = x_center + (smallpatternsize/2) %}
        {% set y_center_min = y_center - (smallpatternsize/2) %}
        {% set y_center_max = y_center + (smallpatternsize/2) %}

    # Save current gcode state (absolute/relative, etc)
    SAVE_GCODE_STATE NAME=TEST_SPEED
    
    # Output parameters to g-code terminal
    { action_respond_info("TEST_SPEED: starting %d iterations at speed %d, accel %d" % (iterations, speed, accel)) }
    
    # Home and get position for comparison later:
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28
        # QGL if not already QGLd (only if QGL section exists in config)
        {% if printer.configfile.settings.quad_gantry_level %}
            {% if printer.quad_gantry_level.applied == False %}
                QUAD_GANTRY_LEVEL
                G28 Z
            {% endif %}
        {% endif %} 
        # Move 50mm away from max position and home again (to help with hall effect endstop accuracy - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/24)
        G90
        G1 X{printer.toolhead.axis_maximum.x-50} Y{printer.toolhead.axis_maximum.y-50} F{30*60}
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28 X Y
        G0 X{printer.toolhead.axis_maximum.x-1} Y{printer.toolhead.axis_maximum.y-1} F{30*60}
        G4 P1000 
        GET_POSITION

    # Go to starting position
    G0 X{x_min} Y{y_min} Z{bound + 10} F{speed*60}

    # Set new limits
    {% if printer.configfile.settings.printer.minimum_cruise_ratio is defined %}
        SET_VELOCITY_LIMIT VELOCITY={speed} ACCEL={accel} MINIMUM_CRUISE_RATIO={min_cruise_ratio}
    {% else %}
        SET_VELOCITY_LIMIT VELOCITY={speed} ACCEL={accel} ACCEL_TO_DECEL={accel / 2}
    {% endif %}

    {% for i in range(iterations) %}
        # Large pattern diagonals
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_max} Y{y_max} F{speed*60}
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
        G0 X{x_min} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
        
        # Large pattern box
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_min} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
    
        # Small pattern diagonals
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_max} Y{y_center_max} F{speed*60}
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
        G0 X{x_center_min} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
        
        # Small pattern box
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_min} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
    {% endfor %}

    # Restore max speed/accel/accel_to_decel to their configured values
    {% if printer.configfile.settings.printer.minimum_cruise_ratio is defined %}
        SET_VELOCITY_LIMIT VELOCITY={printer.configfile.settings.printer.max_velocity} ACCEL={printer.configfile.settings.printer.max_accel} MINIMUM_CRUISE_RATIO={printer.configfile.settings.printer.minimum_cruise_ratio} 
    {% else %}
        SET_VELOCITY_LIMIT VELOCITY={printer.configfile.settings.printer.max_velocity} ACCEL={printer.configfile.settings.printer.max_accel} ACCEL_TO_DECEL={printer.configfile.settings.printer.max_accel_to_decel}
    {% endif %}

    # Re-home and get position again for comparison:
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28 # This is a full G28 to fix an issue with CoreXZ - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/12
        # Go to XY home positions (in case your homing override leaves it elsewhere)
        G90
        G0 X{printer.toolhead.axis_maximum.x-1} Y{printer.toolhead.axis_maximum.y-1} F{30*60}
        G4 P1000 
        GET_POSITION

    # Restore previous gcode state (absolute/relative, etc)
	
    RESTORE_GCODE_STATE NAME=TEST_SPEED

#09/22/25 copied caselight control from 250830_OrigToolhead_printer.cfg

#06/16/25 gfp added to dim the caselights
[delayed_gcode _TURN_ON_CASELIGHTS]
initial_duration: 1
gcode:
  CASELIGHTS_ON

[gcode_macro CASELIGHTS_ON]
gcode:
  SET_PIN PIN=caselight VALUE=0.06

####################################################################################
##                          Session Variables
####################################################################################
#;<    # Section Variable marker
  
#---------------------------------------------------------------
[include 251003_T0-Nitehawk-Revo-LDO.cfg]
#---------------------------------------------------------------

[gcode_macro _limits]
variable_effective_min_y: 120.0 #this value gets changed to '0.0' in 'config_no_dock'
gcode:  # Empty, just for variables


#10/17/25 gfp: PRINT_END moved here to see if I can modify end Z position for only the 'with_dock' configuration
[gcode_macro PRINT_END]
#   Use PRINT_END for the slicer ending script - please customise for your slicer of choice
gcode:
    # safe anti-stringing move coords
    {% set th = printer.toolhead %}
    {% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}
    {% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}
    {% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}
    
    SAVE_GCODE_STATE NAME=STATE_PRINT_END
    
    M400                           ; wait for buffer to clear
    G92 E0                         ; zero the extruder
    G1 E-5.0 F1800                 ; retract filament
    
    TURN_OFF_HEATERS
    
    G90                                      ; absolute positioning
    G0 X{x_safe} Y{y_safe} Z{z_safe} F20000  ; move nozzle to remove stringing
    ;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600  ; park nozzle at rear
    G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600  ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end
    G0 Z225 F3600  ; 08/09/25 gfp adj to raise extruder 25mm   
    M107                                     ; turn off fan
    
    BED_MESH_CLEAR
    RESTORE_GCODE_STATE NAME=STATE_PRINT_END
    
#gfp 09/19/25 edited for 300x300 bed
[gcode_macro _home]
variable_xh: 150.0
variable_yh: 205.0 #Dock installed
# Dock is installed: True or False
variable_dock: True
gcode:
#---------------------------------------------------------------

#05/30/25 added gfp
[bed_mesh]
speed: 120
horizontal_move_z: 5
mesh_min: 30, 120 #10/17/25 Dock Installed
mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5
zero_reference_position: 150,205 #Dock installed

																	   

#gfp 09/19/25 moved here per MissChanger setup instructions
[quad_gantry_level]

#--------------------------------------------------------------------   
##  Gantry Corners for 300mm Build
##  Uncomment for 300mm build
gantry_corners:
   -60,-10
   360,370

##  Probe points
points: #Dock installed	   
   50,120 
   50,225
   250,225
   250,120
   
##  A Stepper - Right
##  Connected to HV STEPPER 1
##  Endstop connected to Y-ENDSTOP

#10/19/25 gfp moved [stepper_y]&[tmc5160 stepper_y] back to their original positions
#         above the variable marker

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -2.000000
#*#
#*# [extruder]
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	  -0.142158, -0.004658, 0.010342, -0.024658, -0.079658
#*# 	  -0.082158, -0.000908, 0.100342, 0.089092, 0.025342
#*# 	  -0.054658, 0.046592, 0.052842, 0.014092, -0.034658
#*# 	  -0.188408, -0.058408, -0.033408, 0.050342, 0.006592
#*# 	  -0.187158, -0.134658, -0.113408, -0.120908, -0.142158
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 120.0
#*# max_y = 250.0
#*#
#*# [tool_probe_endstop]
#*# z_offset = -2.000

20 October 2025 Update:

Back to testing after yesterday’s marathon sessions with Grok. Started a test print with the dock in place (“variable_dock: True” in printer.cfg). Hopefully the prime line will get laid down just in front of the dock exclusion area. Hurrah – it worked! The prime line was laid down at Y=125, as expected, and the print itself turned out as well as any in the past.

28 October 2025 Update:

I spent the entire day yesterday trying to get the ‘LOAD_FILAMENT’ macro to work with toolhead T1, with no success. Every time I tried the macro, it would heat the extruder to 230C and then hang forever ‘waiting for temperature’, even though I could plainly see that extruder 1 was at 230C. For a long time I thought maybe this was happening because I hadn’t yet calibrated the PID for the extruder heater, so the temp was varying too much. After I finally figured out how (with a lot of help from Grok) to calibrate the PID, I *still* couldn’t get LOAD_FILAMENT to work. Eventually, with more help from Grok, I figured out the problem. It turns out that the LOAD_FILAMENT macro definition in printer.cfg only works for a single extruder setup, and it was blocking the execution of the multiple-extruder version of LOAD_FILAMENT in the ‘macro_general.cfg’ file that came with the MissChanger installation – oops!

Once I figured this out, I deleted the LOAD_FILAMENT (and UNLOAD_FILAMENT) versions in printer.cfg, and voila! everything started working again!

So now I understand why the example printer.cfg that came with the MissChanger installation is so simple compared to the one I had developed over time since I first got my Voron 2.4 going; it’s because many of the standard operations in my printer.cfg assume a single extruder (named ‘extruder’). This still works OK with my dual extruder setup when extruder T0 is active, as it is also named ‘extruder’. However, when T1 is active, its extruder is named ‘extruder1’, which isn’t recognized at all by the single-extruder macro definitions. The corresponding macros in ‘macro_general.cfg’ have been generalized to deal with any number of extruders, named ‘extruder’ (for T0) or ‘extruder[x]’ (where ‘x’ ranges from 0-N).

After finally figuring this out, I went back through all the macros in printer.cfg to see what other single-toolhead limited code has to be removed to avoid overriding multiple-toolhead versions in macro_general.cfg, but didn’t find any more. Apparently, the LOAD/UNLOAD_FILAMENT were the only ones.

OK, now I’m trying to figure out why my SB LEDs aren’t working, and my assumption is it has something to do with the T0/T1 issue above. I instrumented 251002_T1_stealthburner_leds.cfg to display on the status screen in the ‘Dashboard’ display, and from that I can tell that when I run the ‘status_ready’ (and others), that the correct macro is called (in this case, the one in 251002_T1_stealthburner_leds.cfg). However, nothing happens on the toolhead itself.

251029 Update:

Well, I am truly down the rabbit-hole without a crumb trail on this one. After a full day of working on the issue with Grok, I’m more lost now than when I started. Grok seems completely convinced that the issue is a hardware problem caused by trying to run the nominally 5V neopixel string from the nominally 3.3V RP2040 MCU on the NH PCB. Grok’s cure was to install a WS2812B 3.3-5V Shifter Board. I’m more than a little suspicious of this result, as I remember having the LED strings on both toolheads working not long ago. Here’s a short movie of a dock/undock cycle from 24 October and the neopixel string was working just fine then.

So, my plan is to revert my Klipper config setup to that previous one and see if the LEDs work again. If so, then it obviously is a software, not hardware, problem.

Looking through my saved config files, I found this complete set of config files:

I replaced the contents of printer.cfg with the contents of 251025_wt_dock_printer.cfg (this file uses the 251003_T0-Nitehawk-Revo-LDO.cfg tool-specific config file, which is already available on the printer), and voila! the LEDs on the T0 (gray) toolhead are back, and all the ‘STATUS_xxx’ macros work as well! So, my old “Hardware never fails – it is ALWAYS a software issue” mantra wins again.

When I told this to Grok, he(it?) congratulated me on eliminating hardware as the problem, and then decided the problem was caused when I moved the T0/T1 include files to the top of printer.cfg. This caused the T0/T1 code to be inserted in the wrong place, thereby causing the LED problems I experienced. Grok then guided me through fixing the issues with the dual toolhead config files.

30 October 2025 Update:

Well, Grok and I have been back and forth a lot over the last few days, and I’m sure by now Grok (he/she/it?) is getting frustrated with the inability of this old human to ‘grok’ (and yes, I *am* old enough to have read “Stranger in a Strange Land” when it first came out) the finer points of Klipper configuration file construction.

The basic problem is that whenever I try to implement a dual-toolhead configuration, the stealthburner LEDs are disabled. Grok has explained this is due to ‘included’ files overwriting needed LED control information (like pin numbers?), and has provided several ideas for fixing the problem via different config file edits. Unfortunately my Klipper ignorance is showing (and Grok has some real blind spots as well), so I haven’t been able to get anything to work.

While researching why this LED thing is giving me so much trouble, I came to realize that the real problem is that I started with the single-toolhead config file developed over time since I first got the Voron going, and part of that was the use of the ‘stealthburner_leds.cfg’ add-on that contains all the cool ‘STATUSxxx’ macros. However, vin’s MISSChanger project starts with just a very plain-vanilla printer.cfg file without any of the bells/whistles and adds the multiple-toolhead stuff from there. This was a situation ripe for problems and boy did I have them. I’m going to give Grok’s ideas a good try, but if I can’t make them work, I’m going to go back to Vin’s basic printer.cfg and build things up from there.

31 October 2025:

I’m going to start a new post – “MissChanger Klipper Configuration – Part 2” – as this one is getting a bit cumbersome.

Stay tuned,

Frank

Adding a Second Toolhead to my Voron 2.4

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Posted 12 September 2025

Last May I started the process of building a Voron 2.4 300x300mm 3D printer, with the ultimate goal of constructing a dual extruder system capable (hopefully) of complex prints requiring soluble supports. Now that I have the printer running with a single ‘Stealthburner’ toolhead, it is time to move on toward my ultimate goal of a dual extruder system.

At this point, I have all the printed parts done, with a working dock module and two separately tested ‘Stealthburner’ toolheads

Now it is time to put all these parts together and see if I can get it all to work!

The MissChanger Github repo contains a ‘Klipper_Config’ folder that holds all the software and also provides a detailed description of the steps required to transition from a single to a multiple extruder firmware configuration. Step1 of this process is backing up the current config files by selecting them in the web interface and downloading them to your computer.

Step 2 (para 3.1.1 in the ReadMe) is the installation of the MissChanger-specific Klipper fork into the Raspbery Pi control computer on the Voron. This is accomplished by ssh’ing into the Pi and running the following command to install the ‘For normal use’ branch:

wget -O - https://raw.githubusercontent.com/VIN-y/klipper-toolchanger/main/scripts/uninstall.sh | bash

1	wget -O - https://raw.githubusercontent.com/VIN-y/klipper-toolchanger/main/scripts/uninstall.sh \| bash

This operation went OK, but I got a minor error as shown:

When I posted this to Vin, he said – “this always happens the first time – just reboot”. I didn’t actually reboot, but the error seems to have disappeared, so…

On to the next step (Step 2: Set up printer.cfg in the ReadMe): Here is the sample printer.cfg:

[include mainsail.cfg]
## default macros
[include misschanger_macros/config_switch.cfg]
[include misschanger_macros/homing.cfg]
[include misschanger_macros/nozzle_clean.cfg]
[include misschanger_macros/overwrite.cfg]
[include misschanger_macros/print_time_default.cfg]
[include misschanger_macros/tool_calibrate.cfg]
[include misschanger_macros/toolchanger.cfg]
[include misschanger_macros/offsets_adjust_record.cfg]
# ## optional default macros
# [include misschanger_macros/tool_calibrate_extra.cfg]    # For the Nudge probe
## misschanger settings
[include misschanger_settings.cfg]
## Other macros
[include macro-general.cfg]
[include macro-testing.cfg]
# ...
# ...
# ...

####################################################################################
##	                         Others
####################################################################################
[config_switch]
[pause_resume]
[save_babies]
# ...
# ...
# ...

####################################################################################
##	                         Global Variables
####################################################################################
#--------------------------------------------------------------------
[gcode_macro _static_variable]
description: Global static variables that is used through out the configs
## Tool-head calibration
variable_calibration_probe_x: 241.237500     # X aproximate position of the calibration probe. CHANGE TO MATCH YOUR SET-UP
variable_calibration_probe_y: 329.825000     # Y aproximate position of the calibration probe. CHANGE TO MATCH YOUR SET-UP
variable_calibration_safe_z: 50.00           # Z aproximate safe position of the calibration probe. KEEP CONSERVATIVE TO AVOID COLLISION
variable_calibration_min_z: 30.00            # Z aproximate probe position of the calibration probe.
variable_probe_stable_time: 1000             # Time (in ms) to wait for calibration probe to reset. Default: 1000
variable_calibration_abs_z_seperately: 0     # "0" = False / "1" = True. For, the Nudge probe this should be '1'
variable_final_lift_z: 3                     # This must be the same as "final_lift_z" in [tools_calibrate] in misschanger_settings.cfg
## Cleaning dock
variable_clean_dock_x: 0                     # Set to "0" to disable. X aproximate position of the cleaning dock. CHANGE TO MATCH YOUR SET-UP.
variable_clean_speed: 7000                   # Don't set too high, the violent shaking may cause problems. CHANGE TO MATCH YOUR SET-UP.
variable_clean_temp: 200                     # Nozzle clean temperature.
variable_clean_threshold: 150.0              # The minimum perimeter of the print, below which no mid-print cleaning of the nozzle will occur.
## Always on crash detection
variable_alway_on_crash_detection: 0         # "0" = False (off) / "1" = True (on)
## For heatsoak macro
variable_heatsoak_temp: 0                    # Set to "0" to disable. Chamber temperature target for heat soak. REQUIRES [temperature_sensor Chamber] below.
## Dynamic thermal expansion compensation
variable_thermo_expand_offset: -0.080        # Maximum z offset for thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
variable_thermo_expand_temp_high: 70         # Chamber temp to apply maximum z offset for thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
variable_thermo_expand_temp_low: 0           # Set to "0" to disable. Chamber temp start applying thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
## Fan control
variable_nm_ciculation_speed: 1.00           # Nevermore Stealth Max fan speed in circulation mode
variable_nm_exhaust_speed: 1.00              # Nevermore Stealth Max fan speed in exhaust mode
variable_chamber_ciculation_speed: 0.25      # Chamber fan speed in chamber-heating mode
variable_chamber_temp_threshold: 91          # If bed temp is below this temperature, then don't enable chamber-heating mode
gcode:                                       # This is here to appease klipper
# ...
# ...
# ...

####################################################################################
##	                 Temperature Monitoring
####################################################################################
[temperature_sensor Chamber]
sensor_type: Generic 3950
sensor_pin: PF4
# ...
# ...
# ...

####################################################################################
				
						   

																	 
						
																	 

##                  FAN
####################################################################################
#--------------------------------------------------------------------
[fan_generic fan_nevermore_stealthmax]
			  
			  
				
					 
			  
															   
				
			   
																	  

								   
					  
				  

							 
					 
				 

							 
					  
				  

																	  
						   
					  
						 

																	 
				   
pin: PD13
			 
				 
				  
				
					 
						

					 
							 
								  
		   
			  
			  
				
					 
			  
															   
				
			   
																	  

							 
					  
				  

							 
					 
				 

							 
					  
				  

																	  
						  
					  
						 

																	 
				   
			
			 
				  
				  
				
					 
						
 
																	 
					  
																	 

						  
						  
								  
		   
			 
			 
				
					 
				   
			  
				 
																		
																						  
														   
															   
																									 
					   
																	  

								   
				  

								   
				 

								   
				  

																	  
				
			   
					  
					  

																	 
				   
			 
				
				  
				
					 
						

						  
						  
			
			  
			 
				
					 
				  
			  

																	 
					
			 
				
				  
				
					 
						

						   
						  
			
			 
			 
				 
					 
				  
			  

																	 
					
			 
				 
				  
				
					 
						

							
						  
			
			 
			
				
					 
				  
			  

																	 
					
			 
				
				  
				
					 
						

																	 
			
																	 

						  
				   
					
		  
					
				   
					   
															
																
																					  
									   
														 
													 
										   
														
						  
											   
			  
																	   
					   
														   
					   
					 
																																		   
												   
										 
					  
					 
			
			 
max_power: 1.0
shutdown_speed: 0.0
cycle_time: 0.010
hardware_pwm: False
kick_start_time: 0.100
off_below: 0.05

#--------------------------------------------------------------------
[fan_generic fan_chamber_heater]
					   
																	
								 
									

				
						  
				  
				   
				 
				  
				
					 
						


																	 
			  
																	 

			
					 
					
				
										 
			   
					 
																							  
																									
			  
		   
			 
			   
					 
			  
			
			  
			 
			   

																	 
		 
																	 

	   
				   
						
																  
									
			   
		   
			   
			   
			   
												

		   
		  
					  
						
									
						 
						
					   
							 
							

																												  
			   
							  
									   
														
												   

									 
																																  
							
			  
																					
									   
																																		
																 
				   
			   

																	 
			   
																	 

	 
							
			  
					 
					
															  
																
													
			   

					   
					 
			  
					
			  
					
				
				 
															   
			   

							   
						 
		
					 
					
				  

						
					  
pin: PA8
					
max_power: 1.0
shutdown_speed: 0.0
cycle_time: 0.010
				  
			   
			  

																	 
				   
																	 

								  
					  
				   
			  
				 
				 
				 

																	 
			   
																	 

							  
						 
					  
		
		
hardware_pwm: False
kick_start_time: 0.100
off_below: 0.05
# ...
# ...
# ...

####################################################################################
##                          Session Variables
####################################################################################
#;<    # Section Variable marker
#---------------------------------------------------------------
[include ./T0-SB2209-Revo-LDO.cfg]
[include ./T1-SB2209-Revo-LDO.cfg]
[include ./T2-Nitehawk-Revo-G2E.cfg]
[include ./T3-Nitehawk-Revo-LDO.cfg]
#---------------------------------------------------------------
[gcode_macro _home]
variable_xh: 175.0
variable_yh: 235.0
# Dock is installed: True or False
variable_dock: True
gcode:
#---------------------------------------------------------------
[bed_mesh]
speed: 200                   # Calibration speed
horizontal_move_z: 10        # Z-axis movement speed
mesh_min: 30,130             # Minimum calibration point coordinates x, y
mesh_max: 320, 320           # Maximum calibration point coordinates x, y. 350mm=320,320
probe_count: 11,11           # Number of sampling points (7X7 is 49 points)
mesh_pps: 2,2                # Number of supplementary sampling points
algorithm: bicubic           # algorithmic model
bicubic_tension: 0.2         # Algorithmic interpolation don't move
#---------------------------------------------------------------
																	 
	  
																	   
								  
																									
						   
										 
					  
		   
			 
					

							 
				 
					
				  
				   
				  
				   

							
					  
							 
					  
					 
		   
			 
			   

																	 
										 
																	 

			  
			 

			 
									   
															 
													   
							 
									  
																			
		 
		
																			

											
																	
																		  
								
[quad_gantry_level]

																		
# Gantry Corners for 350mm Build
							 
gantry_corners:
	-60,-10
	410,420
# Probe points
points:
	50,130
	50,300
	300,300
	300,130

speed: 150                   # Levelling speed
																	 
		  
horizontal_move_z: 15        # Z-axis starting height
retries: 10                  # Number of out-of-tolerance retries
						
								   
			  



																	  
										  
		   
					  
		   
retry_tolerance: 0.0075      # Sampling tolerance
max_adjust: 20               # Maximum adjustment stroke for levelling
										
							
										

			
		
				 
							
							 
																  
							
							   

				 
						   
						   
																  
							 
							 

																	 
			
																	 

									   
																	 

		  
													   
				 
			   
				 
				
				 
							   
					

					
			

																	 

		  
						 
				 
			   
			   
				
							   
					
			 
							  
							  
							  

						 
												
			
			   
				 
				   
				  
				 

												 
										   
								   
					
	   
																		  
																		  
																

																	 
				   
		  
		  
					
				
																
													
																	  
													   
				  

									  
																				  

										 
								   
				   
	  
			   

						   
	  
								  
  

																	 
		  
																	 

				 
	  
								   
	   
	   
					 
	   
											
																		 
								 
						   
	
							   
						  
	
								 
						   
																		 
									  
   
						 
						  
	  
																											   
									   
												 
															 
															  
															  

															  
																		 

																				 
																				 
				
																		 
																		   

												  
																						  

																			 
							  
																				 
																				  
																			

										  
																			   

																				 
																																					 
																						 
																				 
																											

																										  
			
																				 
																				  
																				 
																																					 
																						 
																				 
																								 
			 

																  
																				 
																			 

															  
																							 

										   
																				 
																				   
																							 
																						  

													
																				
																				  
																				  
																			   

												  
																				
																				  
																												  

															 
																								 

														
																				 
																				  
																			   
																																				   
																				  
																					 

															   
																										  

																 
																				 
																				   
																			   
																													  
																													  
																		
																				  
																   
																		   
  
					   
																						   
	  
									 
								   
																								 
																								 
																 
	
										 
	
															 
													  
													 
	
					
	
																   
																			  
																					 
																															  
															  
														   
	
				  
											


				   
																   
	  
												   
	   
			 

				   
											
	  
	   
																  
																  
	 
						  

						   
	  
																	

						 
	  
																   

					   
	  
															
  

						   
	  
																		 
															  


							
	  
																	   
															
  

							 
										   
	  
														
															
														  
	   
													
												   
															  
							 
				  
															
													  
										   
																					 
			   
																							  
			 
			  
														
										 
															 
															  
																				   
																
																  
			  
														
					   
			
													  
										 

						   
											 
	  
														
															
														  
															  
							 
				  
															
													  

										   
																					 
			   
																							  
			 
			  
														
										 
				
															 
											   
			 
														
					 
			
													  
										 
				 


																											 
			  

				   
						   
	  
				
																										   

													   
																																			   
																																					 

																																				  
																																	 
																										  
																																   
																												   
																														 
				  
																																									
																 
				   
																												   
																															
																																																	
																											  
																													  
			   

				  
							
	  
				
																										   

													   
																																			   
																																					 

																																				  
																																	 
																										   
																									 
																																   
																												   
																														 
				  
																																									
																 
				   
																												   
																															
																																																	
																											  
																													  
			   

					
							
				
				 
	  
				
																												  

													   
																																		 
																									  
																														   
						  
																													  
				   
																																															   
																										   
																													
																														
																														   
				  
																																												 
				   
																									   
																								   
			   

						
														
																																				  
																	
														

																																											 

	  
		   
																								 
				
														   
				  
																							  
						  
																		   
																																												
												  
								
																 
	
				   
									   
														 
						  
							   
				   
	
														 
						  
							   
				   
	
									   
																 
									   
																 
	
							 
							   
																												 
																												 
		
												   
																
																
																
																

													   
									
	
										  
																													
	
												 
																						   
		   
																		
															  
															   
								 
					 
					   
					
																																									 
		   
																							   
																						   
			   
																							 
				 
					

							 
												  

					
																				
																								 
			  
																					
			   

									
								 
										
										
										
										
										
										
		
						   
										
										
										
										
	
								 
													  
													  
													  
													  
													  
													  
		
						   
													  
													  
													  
													  
				

																	   
																				
																																																							 
			  
																																																					
			   

													
																						   
																															
																					
		   
																							 
				 
					

														   
									   
		

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -0.563750
#*#
#*# [extruder]
#*# control = pid
#*# pid_kp = 35.987
#*# pid_ki = 4.284
#*# pid_kd = 75.574
#*#
#*# [tool T1]
#*# gcode_x_offset = 0.000
#*# gcode_y_offset = 0.000
#*# gcode_z_offset = 0.000
#*#
#*# [tool_probe T1]
#*# z_offset = 0.000
#*#
#*# [extruder1]
#*# control = pid
#*# pid_kp = 33.912
#*# pid_ki = 3.325
#*# pid_kd = 86.477
#*#
#*# [tool T2]
#*# gcode_x_offset = 0.000
#*# gcode_y_offset = 0.000
#*# gcode_z_offset = 0.000
#*#
#*# [tool_probe T2]
#*# z_offset = 0.000
#*#
#*# [extruder2]
#*# control = pid
#*# pid_kp = 27.329
#*# pid_ki = 1.804
#*# pid_kd = 103.505
#*#
#*# [tool T3]
#*# gcode_x_offset = 0.000
#*# gcode_y_offset = 0.000
#*# gcode_z_offset = 0.000
#*#
#*# [tool_probe T3]
#*# z_offset = 0.000
#*#
#*# [extruder3]
#*# control = pid
#*# pid_kp = 34.630
#*# pid_ki = 3.785
#*# pid_kd = 79.217
#*#

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[include mainsail.cfg]

## default macros

[include misschanger_macros/config_switch.cfg]

[include misschanger_macros/homing.cfg]

[include misschanger_macros/nozzle_clean.cfg]

[include misschanger_macros/overwrite.cfg]

[include misschanger_macros/print_time_default.cfg]

[include misschanger_macros/tool_calibrate.cfg]

[include misschanger_macros/toolchanger.cfg]

[include misschanger_macros/offsets_adjust_record.cfg]

# ## optional default macros

# [include misschanger_macros/tool_calibrate_extra.cfg] # For the Nudge probe

## misschanger settings

[include misschanger_settings.cfg]

## Other macros

[include macro-general.cfg]

[include macro-testing.cfg]

# ...

####################################################################################

## Others

####################################################################################

[config_switch]

[pause_resume]

[save_babies]

# ...

####################################################################################

## Global Variables

####################################################################################

#--------------------------------------------------------------------

[gcode_macro _static_variable]

description: Global static variables that is used through out the configs

## Tool-head calibration

variable_calibration_probe_x: 241.237500 # X aproximate position of the calibration probe. CHANGE TO MATCH YOUR SET-UP

variable_calibration_probe_y: 329.825000 # Y aproximate position of the calibration probe. CHANGE TO MATCH YOUR SET-UP

variable_calibration_safe_z: 50.00 # Z aproximate safe position of the calibration probe. KEEP CONSERVATIVE TO AVOID COLLISION

variable_calibration_min_z: 30.00 # Z aproximate probe position of the calibration probe.

variable_probe_stable_time: 1000 # Time (in ms) to wait for calibration probe to reset. Default: 1000

variable_calibration_abs_z_seperately: 0 # "0" = False / "1" = True. For, the Nudge probe this should be '1'

variable_final_lift_z: 3 # This must be the same as "final_lift_z" in [tools_calibrate] in misschanger_settings.cfg

## Cleaning dock

variable_clean_dock_x: 0 # Set to "0" to disable. X aproximate position of the cleaning dock. CHANGE TO MATCH YOUR SET-UP.

variable_clean_speed: 7000 # Don't set too high, the violent shaking may cause problems. CHANGE TO MATCH YOUR SET-UP.

variable_clean_temp: 200 # Nozzle clean temperature.

variable_clean_threshold: 150.0 # The minimum perimeter of the print, below which no mid-print cleaning of the nozzle will occur.

## Always on crash detection

variable_alway_on_crash_detection: 0 # "0" = False (off) / "1" = True (on)

## For heatsoak macro

variable_heatsoak_temp: 0 # Set to "0" to disable. Chamber temperature target for heat soak. REQUIRES [temperature_sensor Chamber] below.

## Dynamic thermal expansion compensation

variable_thermo_expand_offset: -0.080 # Maximum z offset for thermal expansion compensation. REQUIRES [temperature_sensor Chamber]

variable_thermo_expand_temp_high: 70 # Chamber temp to apply maximum z offset for thermal expansion compensation. REQUIRES [temperature_sensor Chamber]

variable_thermo_expand_temp_low: 0 # Set to "0" to disable. Chamber temp start applying thermal expansion compensation. REQUIRES [temperature_sensor Chamber]

## Fan control

variable_nm_ciculation_speed: 1.00 # Nevermore Stealth Max fan speed in circulation mode

variable_nm_exhaust_speed: 1.00 # Nevermore Stealth Max fan speed in exhaust mode

variable_chamber_ciculation_speed: 0.25 # Chamber fan speed in chamber-heating mode

variable_chamber_temp_threshold: 91 # If bed temp is below this temperature, then don't enable chamber-heating mode

gcode: # This is here to appease klipper

# ...

####################################################################################

## Temperature Monitoring

####################################################################################

[temperature_sensor Chamber]

sensor_type: Generic 3950

sensor_pin: PF4

# ...

####################################################################################

## FAN

####################################################################################

#--------------------------------------------------------------------

[fan_generic fan_nevermore_stealthmax]

pin: PD13

max_power: 1.0

shutdown_speed: 0.0

cycle_time: 0.010

hardware_pwm: False

kick_start_time: 0.100

off_below: 0.05

#--------------------------------------------------------------------

[fan_generic fan_chamber_heater]

pin: PA8

max_power: 1.0

shutdown_speed: 0.0

cycle_time: 0.010

hardware_pwm: False

kick_start_time: 0.100

off_below: 0.05

# ...

####################################################################################

## Session Variables

####################################################################################

#;< # Section Variable marker

#---------------------------------------------------------------

[include ./T0-SB2209-Revo-LDO.cfg]

[include ./T1-SB2209-Revo-LDO.cfg]

[include ./T2-Nitehawk-Revo-G2E.cfg]

[include ./T3-Nitehawk-Revo-LDO.cfg]

#---------------------------------------------------------------

[gcode_macro _home]

variable_xh: 175.0

variable_yh: 235.0

# Dock is installed: True or False

variable_dock: True

gcode:

#---------------------------------------------------------------

[bed_mesh]

speed: 200 # Calibration speed

horizontal_move_z: 10 # Z-axis movement speed

mesh_min: 30,130 # Minimum calibration point coordinates x, y

mesh_max: 320, 320 # Maximum calibration point coordinates x, y. 350mm=320,320

probe_count: 11,11 # Number of sampling points (7X7 is 49 points)

mesh_pps: 2,2 # Number of supplementary sampling points

algorithm: bicubic # algorithmic model

bicubic_tension: 0.2 # Algorithmic interpolation don't move

#---------------------------------------------------------------

[quad_gantry_level]

# Gantry Corners for 350mm Build

gantry_corners:

-60,-10

410,420

# Probe points

points:

50,130

50,300

300,300

300,130

speed: 150 # Levelling speed

horizontal_move_z: 15 # Z-axis starting height

retries: 10 # Number of out-of-tolerance retries

retry_tolerance: 0.0075 # Sampling tolerance

max_adjust: 20 # Maximum adjustment stroke for levelling

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [tool_probe T0]

#*# z_offset = -0.563750

#*#

#*# [extruder]

#*# control = pid

#*# pid_kp = 35.987

#*# pid_ki = 4.284

#*# pid_kd = 75.574

#*#

#*# [tool T1]

#*# gcode_x_offset = 0.000

#*# gcode_y_offset = 0.000

#*# gcode_z_offset = 0.000

#*#

#*# [tool_probe T1]

#*# z_offset = 0.000

#*#

#*# [extruder1]

#*# control = pid

#*# pid_kp = 33.912

#*# pid_ki = 3.325

#*# pid_kd = 86.477

#*#

#*# [tool T2]

#*# gcode_x_offset = 0.000

#*# gcode_y_offset = 0.000

#*# gcode_z_offset = 0.000

#*#

#*# [tool_probe T2]

#*# z_offset = 0.000

#*#

#*# [extruder2]

#*# control = pid

#*# pid_kp = 27.329

#*# pid_ki = 1.804

#*# pid_kd = 103.505

#*#

#*# [tool T3]

#*# gcode_x_offset = 0.000

#*# gcode_y_offset = 0.000

#*# gcode_z_offset = 0.000

#*#

#*# [tool_probe T3]

#*# z_offset = 0.000

#*#

#*# [extruder3]

#*# control = pid

#*# pid_kp = 34.630

#*# pid_ki = 3.785

#*# pid_kd = 79.217

#*#

14 September 2025 Update:

After a LOT of back-and-forth with Vin on Discord I finally got Klipper to get all the way through the bootup sequence to the point where I could actually try a print. Unfortunately, as soon as I tried, Klipper started throwing errors again, like the following:

This particular error was cleared by noting that there was a capitalization error in printer.cfg’s [temperature_sensor_chamber] section – the word ‘chamber’ should be capitalized, as follows:

#####################################################################
#   TH
# #####################################################################
#[temperature_sensor chamber_temp]
#[temperature_sensor chamber] #06/16/25 gfp chg to match variable name in PRINT_START >90C 'IF' block
[temperature_sensor Chamber] #09/14/25 gfp chg 'chamber' to 'Chamber'
#gfp 09/14/25 This is the chamber thermistor used for *all* toolheads, so is in printer.cfg, but is 
#actually connected to nhk0:gpio28

## Chamber Temperature - T1
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: nhk0:gpio28
min_temp: 0
max_temp: 100
gcode_id: chamber_th
#--------------------------------------------------------------------

#####################################################################

# TH

# #####################################################################

#[temperature_sensor chamber_temp]

#[temperature_sensor chamber] #06/16/25 gfp chg to match variable name in PRINT_START >90C 'IF' block

[temperature_sensor Chamber] #09/14/25 gfp chg 'chamber' to 'Chamber'

#gfp 09/14/25 This is the chamber thermistor used for *all* toolheads, so is in printer.cfg, but is

#actually connected to nhk0:gpio28

## Chamber Temperature - T1

sensor_type: ATC Semitec 104NT-4-R025H42G

sensor_pin: nhk0:gpio28

min_temp: 0

max_temp: 100

gcode_id: chamber_th

#--------------------------------------------------------------------

Also, it took me forever to figure out how to handle the hardware pin assignment for this sensor. The sensor is connected to the NiteHawk PCB board on one of my two Stealthburner toolheads, but it is used regardless of which toolhead is actually in use. This meant (as I finally figured out) that the above ‘temperature_sensor Chamber’ section had to go into printer.cfg insteaf of one of the ‘Tx…’ toolhead config files, but the hardware pin has to be named ‘nhk0:gpio28’ because that’s actually where the signal shows up.

Then I hit another roadblock:

Error evaluating 'gcode_macro PRINT_START:gcode': jinja2.exceptions.UndefinedError: 'dict object' has no attribute 'BED_TEMP'

1	Error evaluating 'gcode_macro PRINT_START:gcode': jinja2.exceptions.UndefinedError: 'dict object' has no attribute 'BED_TEMP'

This got me to thinking about all the macros that were in my original, working-fine, printer.cfg that weren’t in my brand-new multiple-extruder ‘printer.cfg’. So, I took a deep breath and copied them all over to ‘printer.cfg’ and restarted everything. This time Klipper came all the way up – almost like normal!! – and I was able to print a test object – Yay!!

Strap retainer printed in PETG with ‘printer.cfg’ and ‘T0-StealthNhk-CW-Revo.cfg’ using Vin’s multiple-extruder Klipper configuration.

A couple of small flies in the ointment: First, the print started out *way* too close to the bed, just about dragging. I was able to use Klipper’s ‘fine tune’ facility (nice nice nice!) to raise the nozzle enough (1.5mm) to get a good first layer, and the print finished OK. Second, when I tried to save the new Z-offset I got an error about ‘BABY STEPS’ that I didn’t understand. Here are the relevant lines from Klippy.log:

	Line 24920: Internal error on command:"SAVE_BABYSTEPS"
	Line 24927:   File "/home/pi/klipper/klippy/extras/save_babies.py", line 21, in cmd_SAVE_BABYSTEPS
	Line 24928:     self.save_babysteps(gcmd, z_offset)
	Line 24929:   File "/home/pi/klipper/klippy/extras/save_babies.py", line 47, in save_babysteps
	Line 24933: Transition to shutdown state: Internal error on command:"SAVE_BABYSTEPS"
	Line 24958: Internal error on command:"SAVE_BABYSTEPS"
	Line 24964: Internal error on command:"SAVE_BABYSTEPS"
	Line 24983:   File "/home/pi/klipper/klippy/extras/save_babies.py", line 21, in cmd_SAVE_BABYSTEPS
	Line 24984:     self.save_babysteps(gcmd, z_offset)
	Line 24985:   File "/home/pi/klipper/klippy/extras/save_babies.py", line 47, in save_babysteps
	Line 25424:   File "/home/pi/klipper/klippy/extras/save_babies.py", line 21, in cmd_SAVE_BABYSTEPS
	Line 25425:     self.save_babysteps(gcmd, z_offset)
	Line 25426:   File "/home/pi/klipper/klippy/extras/save_babies.py", line 47, in save_babysteps
	Line 26603: 	SAVE_BABYSTEPS OFFSET={zg}

Line 24920: Internal error on command:"SAVE_BABYSTEPS"

Line 24927: File "/home/pi/klipper/klippy/extras/save_babies.py", line 21, in cmd_SAVE_BABYSTEPS

Line 24928: self.save_babysteps(gcmd, z_offset)

Line 24929: File "/home/pi/klipper/klippy/extras/save_babies.py", line 47, in save_babysteps

Line 24933: Transition to shutdown state: Internal error on command:"SAVE_BABYSTEPS"

Line 24958: Internal error on command:"SAVE_BABYSTEPS"

Line 24964: Internal error on command:"SAVE_BABYSTEPS"

Line 24983: File "/home/pi/klipper/klippy/extras/save_babies.py", line 21, in cmd_SAVE_BABYSTEPS

Line 24984: self.save_babysteps(gcmd, z_offset)

Line 24985: File "/home/pi/klipper/klippy/extras/save_babies.py", line 47, in save_babysteps

Line 25424: File "/home/pi/klipper/klippy/extras/save_babies.py", line 21, in cmd_SAVE_BABYSTEPS

Line 25425: self.save_babysteps(gcmd, z_offset)

Line 25426: File "/home/pi/klipper/klippy/extras/save_babies.py", line 47, in save_babysteps

Line 26603: SAVE_BABYSTEPS OFFSET={zg}

Looking at ‘printer.cfg’ after the print, I see:

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	  -0.028569, 0.045181, 0.051431, 0.016431, -0.047319
#*# 	  -0.013569, 0.017681, 0.015181, 0.010181, -0.034819
#*# 	  -0.006069, -0.001069, 0.000181, -0.004819, -0.011069
#*# 	  -0.067319, -0.023569, -0.001069, -0.017319, -0.041069
#*# 	  -0.006069, -0.023569, -0.037319, -0.044819, -0.078569
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 35.0
#*# max_y = 250.0
#*#
#*# [probe]
#*# z_offset = -1.680

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [bed_mesh default]

#*# version = 1

#*# points =

#*# -0.028569, 0.045181, 0.051431, 0.016431, -0.047319

#*# -0.013569, 0.017681, 0.015181, 0.010181, -0.034819

#*# -0.006069, -0.001069, 0.000181, -0.004819, -0.011069

#*# -0.067319, -0.023569, -0.001069, -0.017319, -0.041069

#*# -0.006069, -0.023569, -0.037319, -0.044819, -0.078569

#*# x_count = 5

#*# y_count = 5

#*# mesh_x_pps = 2

#*# mesh_y_pps = 2

#*# algo = lagrange

#*# tension = 0.2

#*# min_x = 30.0

#*# max_x = 275.0

#*# min_y = 35.0

#*# max_y = 250.0

#*#

#*# [probe]

#*# z_offset = -1.680

The ‘z_offset value of -1.680 *looks* correct, so maybe the fine-tuning offset got saved anyway. Another test print will tell the tale.

Nope – the second print had the same problem, so the offset was NOT saved – bummer!

tool_probe_endstop: z_offset: -1.500
The SAVE_CONFIG command will update the printer config file
with the above and restart the printer.
save_config: set [tool_probe_endstop] z_offset = -1.500
Internal error on command:"SAVE_BABYSTEPS"
Traceback (most recent call last):
  File "/home/pi/klipper/klippy/gcode.py", line 212, in _process_commands
    handler(gcmd)
  File "/home/pi/klipper/klippy/gcode.py", line 140, in <lambda>
    func = lambda params: origfunc(self._get_extended_params(params))
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/pi/klipper/klippy/extras/save_babies.py", line 21, in cmd_SAVE_BABYSTEPS
    self.save_babysteps(gcmd, z_offset)
  File "/home/pi/klipper/klippy/extras/save_babies.py", line 47, in save_babysteps
    if section != "tool_probe_endstop":
       ^^^^^^^
UnboundLocalError: cannot access local variable 'section' where it is not associated with a value
Transition to shutdown state: Internal error on command:"SAVE_BABYSTEPS"

tool_probe_endstop: z_offset: -1.500

The SAVE_CONFIG command will update the printer config file

with the above and restart the printer.

save_config: set [tool_probe_endstop] z_offset = -1.500

Internal error on command:"SAVE_BABYSTEPS"

Traceback (most recent call last):

File "/home/pi/klipper/klippy/gcode.py", line 212, in _process_commands

handler(gcmd)

File "/home/pi/klipper/klippy/gcode.py", line 140, in <lambda>

func = lambda params: origfunc(self._get_extended_params(params))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "/home/pi/klipper/klippy/extras/save_babies.py", line 21, in cmd_SAVE_BABYSTEPS

self.save_babysteps(gcmd, z_offset)

File "/home/pi/klipper/klippy/extras/save_babies.py", line 47, in save_babysteps

if section != "tool_probe_endstop":

^^^^^^^

UnboundLocalError: cannot access local variable 'section' where it is not associated with a value

Transition to shutdown state: Internal error on command:"SAVE_BABYSTEPS"

15 September 2025 Update:

After fumbling around quite a bit with this single-extruder-but-multiple-extruder-configuration, I decided to try revert back to the original printer.cfg, which in this case is my ‘250830_SecondToolhead_printer.cfg’. To do this I ssh’d into the raspberry pi, replaced the existing ‘printer.cfg’, with my ‘250830_SecondToolhead_printer.cfg’ (renamed to ‘printer.cfg’ to the raspberry using SCP at a Windows Command Line prompt (the actual command syntax is shown below)

scp "C:\Users\Frank\Documents\3D Projects\Voron Printer\PrinterConfig\printer.cfg" pi@192.168.1.184:/home/pi/printer_data/config/

1	scp "C:\Users\Frank\Documents\3D Projects\Voron Printer\PrinterConfig\printer.cfg" pi@192.168.1.184:/home/pi/printer_data/config/

After doing this and restarting the printer, everything came back up peaches. The printer connected to the web browser page without issues, and now I could see all four temperature readouts as shown below:

The print job ran normally, and although I didn’t really need to, I used the ‘Fine Tune’ facility on the printer to slightly optimize the extruder z-offset to see if the new offset adjustment could be saved at the end of the print. As it turned out – the new offset save was successful, and the printer reset properly and reconnected to the browser properly (the MissChanger configuration did not allow this – I had to physically cycle the power each time to get the printer to come up and reconnect to the browser.

So, it is clear now that the problems I was having were due entirely to the differences in the printer.cfg and its interactions with the rest of the ‘Toolchanger’ software stack. Tomorrow I will try going back to the Toolchanger setup, with a much more basic config.

Stay Tuned!

Frank

16 September 2025 Update:

The plan for today is to start by breaking up my known-good ‘printer.cfg’ into two parts – ‘Printer_Specific_printer.cfg’ and ‘T0_Specific_printer.cfg’. The sum of these parts will exactly match the current ‘printer.cfg’, and therefore, should operate flawlessly – I hope. Here’s my current working ‘printer.cfg’:

# This file contains common pin mappings for the LDO Voron 2.4 Rev. D kit
# See docs/Config_Reference.md for a description of parameters.

## Voron Design VORON 2.4 250/300/350mm Leviathan V1.1 + Nitehawk-SB config

## *** THINGS TO CHANGE/CHECK: ***
## MCU paths                            [mcu] section
## Thermistor types                     [extruder] and [heater_bed] sections - See https://www.klipper3d.org/Config_Reference.html#common-thermistors for common thermistor types
## Z Endstop Switch location            [safe_z_home] section
## Homing end position                  [gcode_macro G32] section
## Z Endstop Switch  offset for Z0      [stepper_z] section
## Probe points                         [quad_gantry_level] section
## Min & Max gantry corner postions     [quad_gantry_level] section
## PID tune                             [extruder] and [heater_bed] sections
## Probe pin                            [probe] section
## Fine tune E steps                    [extruder] section

[include mainsail.cfg]
[include stealthburner_leds.cfg]

[mcu]
##  Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify
##--------------------------------------------------------------------
serial: /dev/serial/by-id/usb-Klipper_stm32h743xx_2A001E000A51333038383535-if00
restart_method: command
##--------------------------------------------------------------------

[mcu nhk]
##  Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify
##--------------------------------------------------------------------
serial: /dev/serial/by-id/usb-Klipper_rp2040_4E363334320BB8A5-if00
restart_method: command
##--------------------------------------------------------------------

[printer]
kinematics: corexy
max_velocity: 300  
#max_accel: 10000
max_accel: 15000 #gfp 08/12/25 per Ellis' tuning guide

max_z_velocity: 15          #Max 15 for 12V TMC Drivers, can increase for 24V
max_z_accel: 350
square_corner_velocity: 5.0

#####################################################################
#   X/Y Stepper Settings
#####################################################################

##  B Stepper - Left
##  Connected to HV STEPPER 0
##  Endstop connected to X-ENDSTOP
[stepper_x]
step_pin: PB10
dir_pin: !PB11
enable_pin: !PG0
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC1
position_min: 0
##--------------------------------------------------------------------

##  Uncomment below for 250mm build
#position_endstop: 250
#position_max: 250

##  Uncomment for 300mm build
position_endstop: 300
position_max: 300

##  Uncomment for 350mm build
#position_endstop: 350
#position_max: 350

##--------------------------------------------------------------------
homing_speed: 25   #Max 100
homing_retract_dist: 5
homing_positive_dir: true

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc5160 stepper_x]
cs_pin: PE15
spi_bus: spi4
#diag0_pin: ^!PG1
interpolate: false
run_current: 0.8
sense_resistor: 0.075
stealthchop_threshold: 0

##  A Stepper - Right
##  Connected to HV STEPPER 1
##  Endstop connected to Y-ENDSTOP
[stepper_y]
step_pin: PF15
dir_pin: !PF14
enable_pin: !PE9
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC2
position_min: 0
##--------------------------------------------------------------------

##  Uncomment for 250mm build
#position_endstop: 250
#position_max: 250

##  Uncomment for 300mm build
position_endstop: 310
position_max: 310

##  Uncomment for 350mm build
#position_endstop: 350
#position_max: 350

##--------------------------------------------------------------------
homing_speed: 25  #Max 100
homing_retract_dist: 5
homing_positive_dir: true

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc5160 stepper_y]
cs_pin: PE11
spi_bus: spi4
#diag0_pin: ^!PE10
interpolate: false
run_current: 0.8
sense_resistor: 0.075
stealthchop_threshold: 0
 
#####################################################################
#   Z Stepper Settings
#####################################################################

## Z0 Stepper - Front Left
##  Connected to STEPPER 0
##  Endstop connected to Z-ENDSTOP
[stepper_z]
step_pin: PD4
dir_pin: !PD3
enable_pin: !PD7
rotation_distance: 40
gear_ratio: 80:16  
microsteps: 32
#endstop_pin: PC3
endstop_pin: probe:z_virtual_endstop #07/12/25 gfp chg for Voron Tap mod
##  Z-position of nozzle (in mm) to z-endstop trigger point relative to print surface (Z0)
##  (+) value = endstop above Z0, (-) value = endstop below
##  Increasing position_endstop brings nozzle closer to the bed
##  After you run Z_ENDSTOP_CALIBRATE, position_endstop will be stored at the very end of your config
#position_endstop: -0.5
##--------------------------------------------------------------------

##  Uncomment below for 250mm build
#position_max: 230

##  Uncomment below for 300mm build
position_max: 280

##  Uncomment below for 350mm build
#position_max: 330

##--------------------------------------------------------------------
position_min: -5
homing_speed: 8
second_homing_speed: 3
homing_retract_dist: 3

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z]
uart_pin: PD5
#diag_pin: ^!PD6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z1 Stepper - Rear Left
##  Connected to STEPPER 1
[stepper_z1]
step_pin: PC12
dir_pin: PC11
enable_pin: !PD2
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z1]
uart_pin: PD0
#diag_pin: ^!PD1
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z2 Stepper - Rear Right
##  Connected to STEPPER 2
[stepper_z2]
step_pin: PC9
dir_pin: !PC8
enable_pin: !PC10
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z2]
uart_pin: PA8
#diag_pin: ^!PA15
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z3 Stepper - Front Right
##  Connected to STEPPER 3
[stepper_z3]
step_pin: PG7
dir_pin: PG6
enable_pin: !PC7
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z3]
uart_pin: PG8
#diag_pin: ^!PC6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

#####################################################################
#   Extruder
#####################################################################

##  Connected to STEPPER 0
##  Heater - HEATER
##  Thermistor - TH0
[extruder]
step_pin: nhk:gpio23
dir_pin: nhk:gpio24
enable_pin: !nhk:gpio25
##  Update value below when you perform extruder calibration
##  If you ask for 100mm of filament, but in reality it is 98mm:
##  rotation_distance = <previous_rotation_distance> * <actual_extrude_distance> / 100
##  22.6789511 is a good starting point
rotation_distance: 22.6789511   #Bondtech 5mm Drive Gears
##  Update Gear Ratio depending on your Extruder Type
##  Use 50:10 for Stealthburner/Clockwork 2
##  Use 50:17 for Afterburner/Clockwork (BMG Gear Ratio)
##  Use 80:20 for M4, M3.1
gear_ratio: 50:10               #BMG Gear Ratio
microsteps: 32
full_steps_per_rotation: 200    #200 for 1.8 degree, 400 for 0.9 degree
#nozzle_diameter: 0.400
nozzle_diameter: 0.600 #gfp 08/30/25 second toolhead nozzle
filament_diameter: 1.75
heater_pin: nhk:gpio9
## Check what thermistor type you have. See https://www.klipper3d.org/Config_Reference.html#common-thermistors for common thermistor types.
## Use "Generic 3950" for NTC 100k 3950 thermistors
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: nhk:gpio29
pullup_resistor: 2200
min_temp: 10
max_temp: 270
max_power: 1.0
min_extrude_temp: 170
control = pid
pid_kp = 26.213
pid_ki = 1.304
pid_kd = 131.721

max_extrude_only_distance = 101 #gfp 08/09/2025 added for Ellis Tuning 
##  Try to keep pressure_advance below 1.0
#pressure_advance: 0.05
pressure_advance: 0.10 #gfp 08/10/25 result from Ellis' Tuning guide
##  Default is 0.040, leave stock
#pressure_advance_smooth_time: 0.040

##  E0 on MOTOR6
##  Connected to STEPPER 4
[tmc2209 extruder]
uart_pin: nhk:gpio0
tx_pin: nhk:gpio1
interpolate: false
run_current: 0.5
sense_resistor: 0.100
stealthchop_threshold: 0


#####################################################################
#   Bed Heater
#####################################################################

[heater_bed]
##  SSR Pin - HEATBED
##  Thermistor - TH1
heater_pin: PG11
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: PA2
pullup_resistor: 2200
##  Adjust Max Power so your heater doesn't warp your bed. Rule of thumb is 0.4 watts / cm^2 .
## 7/5/25 gfp edited this section to suppress "Heater heater_bed not heating at expected rate" error
max_power: 0.8
min_temp: 0
max_temp: 130
#max_error: 150
#check_gain_time: 100
#hysteresis: 7
control: pid
pid_kp: 58.437
pid_ki: 2.347
pid_kd: 363.769

#####################################################################
#   Probe
#####################################################################

[probe]
##  Inductive Probe
##  Connected to Z-PROBE
##  This probe is not used for Z height, only Quad Gantry Leveling
#07/22/25 gfp modified for tap probe
pin: nhk:gpio10
x_offset: 0
#y_offset: 25.0
#z_offset: 2.57
#y_offset: 25.0
y_offset: 0 #07/22/25 gfp modified for tap probe

speed: 10.0
samples: 3
samples_result: median
sample_retract_dist: 3.0
#07/22/25 gfp modified for tap probe
#samples_tolerance: 0.006
#samples_tolerance: 0.01
samples_tolerance: 0.02
#samples_tolerance_retries: 3
samples_tolerance_retries: 5

#07/12/25 gfp added here per https://github.com/VoronDesign/Voron-Tap/blob/main/config/tap_klipper_instructions.md
activate_gcode:
    {% set PROBE_TEMP = 150 %}
    {% set MAX_TEMP = PROBE_TEMP + 5 %}
    {% set ACTUAL_TEMP = printer.extruder.temperature %}
    {% set TARGET_TEMP = printer.extruder.target %}

    {% if TARGET_TEMP > PROBE_TEMP %}
        { action_respond_info('Extruder temperature target of %.1fC is too high, lowering to %.1fC' % (TARGET_TEMP, PROBE_TEMP)) }
        M109 S{ PROBE_TEMP }
    {% else %}
        # Temperature target is already low enough, but nozzle may still be too hot.
        {% if ACTUAL_TEMP > MAX_TEMP %}
            { action_respond_info('Extruder temperature %.1fC is still too high, waiting until below %.1fC' % (ACTUAL_TEMP, MAX_TEMP)) }
            TEMPERATURE_WAIT SENSOR=extruder MAXIMUM={ MAX_TEMP }
        {% endif %}
    {% endif %}

#####################################################################
#   Fan Control
#####################################################################

[fan]
##  Print Cooling Fan - FAN0
pin: nhk:gpio6
##tachometer_pin: PB0
kick_start_time: 0.5
##  Depending on your fan, you may need to increase this value
##  if your fan will not start. Can change cycle_time (increase)
##  if your fan is not able to slow down effectively
off_below: 0.10

[heater_fan hotend_fan]
##  Hotend Fan - FAN1
pin: nhk:gpio5
#tachometer_pin: PB4
max_power: 1.0
kick_start_time: 0.5
heater: extruder
heater_temp: 50.0
##  If you are experiencing back flow, you can reduce fan_speed
#fan_speed: 1.0

[controller_fan controller_fan]
##  Controller fan - FAN2
pin: PF7
##tachometer_pin: PF6
kick_start_time: 0.5
heater: heater_bed

[heater_fan exhaust_fan]
##  Exhaust fan - FAN3
pin: PF9
#tachometer_pin: PF8
max_power: 1.0
shutdown_speed: 0.0
kick_start_time: 5.0
heater: heater_bed
heater_temp: 60
fan_speed: 1.0

#####################################################################
#   Filament sensor
#####################################################################

#[filament_switch_sensor Filament]
#pause_on_runout: True
#runout_gcode: M600
#insert_gcode:
#event_delay: 3.0
#pause_delay: 0.5
#switch_pin: !PC0

#####################################################################
#   LED Control
#####################################################################

## Chamber Lighting (Optional)
## Connected to LED-STRIP
[output_pin caselight]
pin: PE6
pwm:true
hardware_pwm: False
value: 0.20 #startup value
shutdown_value: 0
value:1
cycle_time: 0.00025

## Connected to led (nitehawk sb)
[output_pin pcb_led]
pin: !nhk:gpio8

## Connected to NEOPIXEL (nitehawk sb)
#chain_count: 3
#color_order: GRBW
#initial_RED: 0.0
#initial_BLUE: 0.0
#initial_WHITE: 0.0


#####################################################################
#   Accelerometer
#####################################################################
[adxl345]
cs_pin: nhk:gpio21
spi_software_sclk_pin: nhk:gpio18
spi_software_mosi_pin: nhk:gpio20
spi_software_miso_pin: nhk:gpio19

[resonance_tester]
accel_chip: adxl345
probe_points:
    175, 175, 20


#####################################################################
#   TH
# #####################################################################
#[temperature_sensor chamber_temp]
[temperature_sensor chamber] #06/16/25 gfp chg to match variable name in PRINT_START >90C 'IF' block
## Chamber Temperature - T1
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: nhk:gpio28
min_temp: 0
max_temp: 100
gcode_id: chamber_th

[thermistor CMFB103F3950FANT]
temperature1: 0.0
resistance1: 32116.0
temperature2: 40.0
resistance2: 5309.0
temperature3: 80.0
resistance3: 1228.0

[temperature_sensor nh_temp]
## Nitehawk PCB Sensor
sensor_type: CMFB103F3950FANT
sensor_pin: nhk:gpio26
pullup_resistor: 2200
min_temp: 0
max_temp: 100
gcode_id: nh_th

#####################################################################
#   Homing and Gantry Adjustment Routines
#####################################################################

[idle_timeout]
timeout: 1800

[safe_z_home]
##  XY Location of the Z Endstop Switch
##  Update -10,-10 to the XY coordinates of your endstop pin 
##  (such as 157,305) after going through Z Endstop Pin
##  Location Definition step.
#home_xy_position:210,310 #5/28/25 GFP
home_xy_position:150,150 #07/12/2025 gfp chg to bed center for Voron Tap mod
speed:100
z_hop:10
#z_hop:40 #06/07/25 gfp to prevent 'probe triggered prior to movement error'

##  Use QUAD_GANTRY_LEVEL to level a gantry.
##  Min & Max gantry corners - measure from nozzle at MIN (0,0) and 
##  MAX (250, 250), (300,300), or (350,350) depending on your printer size
##  to respective belt positions
[quad_gantry_level]

#--------------------------------------------------------------------   
##  Gantry Corners for 300mm Build
##  Uncomment for 300mm build
gantry_corners:
   -60,-10
   360,370
##  Probe points
points:
   50,25
   50,225
   250,225
   250,25


#--------------------------------------------------------------------
speed: 100
horizontal_move_z: 10
retries: 5
#retry_tolerance: 0.0075
retry_tolerance: 0.01 #07/23/25 gfp
max_adjust: 10



##--------------------------------------------------------------------
#07/23/25 gfp commented out - duplicative?
#speed: 200
#horizontal_move_z: 10
#retries: 5
#retry_tolerance: 0.0075

########################################
# EXP1 / EXP2 (display) pins
########################################

[board_pins]
aliases:
    # EXP1 header
    EXP1_1=PG9, EXP1_2=PG12,
    EXP1_3=PG13, EXP1_4=PG14,
    EXP1_5=PC13, EXP1_6=PC14,    # Slot in the socket on this side
    EXP1_7=PC15, EXP1_8=PF0,
    EXP1_9=<GND>, EXP1_10=<5V>,

    # EXP2 header
    EXP2_1=PA6, EXP2_2=PA5,
    EXP2_3=PE2, EXP2_4=PE4,
    EXP2_5=PE3, EXP2_6=PA7,      # Slot in the socket on this side
    EXP2_7=PE5, EXP2_8=<RST>,
    EXP2_9=<GND>, EXP2_10=PE4

#####################################################################
#   Displays
#####################################################################

##  Uncomment the display that you have
#--------------------------------------------------------------------

#[display]
##  RepRapDiscount 128x64 Full Graphic Smart Controller
#lcd_type: st7920
#cs_pin: EXP1_4
#sclk_pin: EXP1_5
#sid_pin: EXP1_3
#menu_timeout: 40
#encoder_pins: ^EXP2_5, ^EXP2_3
#click_pin: ^!EXP1_2

#[output_pin beeper]
#pin: EXP1_1

#--------------------------------------------------------------------

#[display]
##  mini12864 LCD Display
#lcd_type: uc1701
#cs_pin: EXP1_3
#a0_pin: EXP1_4
#rst_pin: EXP1_5
#encoder_pins: ^EXP2_5, ^EXP2_3
#click_pin: ^!EXP1_2
#contrast: 63
#spi_software_miso_pin: EXP2_1
#spi_software_mosi_pin: EXP2_6
#spi_software_sclk_pin: EXP2_2

#[neopixel btt_mini12864]
##  To control Neopixel RGB in mini12864 display
#pin: EXP1_6
#chain_count: 3
#initial_RED: 0.1
#initial_GREEN: 0.5
#initial_BLUE: 0.0
#color_order: RGB

##  Set RGB values on boot up for each Neopixel. 
##  Index 1 = display, Index 2 and 3 = Knob
#[delayed_gcode setdisplayneopixel]
#initial_duration: 1
#gcode:
#        SET_LED LED=btt_mini12864 RED=1 GREEN=1 BLUE=1 INDEX=1 TRANSMIT=0
#        SET_LED LED=btt_mini12864 RED=1 GREEN=0 BLUE=0 INDEX=2 TRANSMIT=0
#        SET_LED LED=btt_mini12864 RED=1 GREEN=0 BLUE=0 INDEX=3 

#--------------------------------------------------------------------
#05/30/25 added gfp
[bed_mesh]
speed: 120
horizontal_move_z: 5
#mesh_min: 35, 6
#mesh_min: 5, 30 #5/30/25 probe offset is 0,25, so result is 5,5
#mesh_min: 25, 25 #06/01/25 gfp: 25mm from each edge
mesh_min: 30, 30 #06/12/25 gfp: 30mm from each edge, 25 was not enough
mesh_min: 30, 35 #07/05/25 gfp: 30 was not enough for Y
mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5
zero_reference_position: 150,150 #for use with stock z endstop. Added 06/01/25 gfp

#06/16/25 gfp added to dim the caselights
[delayed_gcode _TURN_ON_CASELIGHTS]
initial_duration: 1
gcode:
  CASELIGHTS_ON

[gcode_macro CASELIGHTS_ON]
gcode:
  SET_PIN PIN=caselight VALUE=0.06
  

#####################################################################
#   Macros
#####################################################################

[gcode_macro G32]
gcode:
    SAVE_GCODE_STATE NAME=STATE_G32
    G90
    G28
    QUAD_GANTRY_LEVEL
    G28
    ##  Uncomment for for your size printer:
    #--------------------------------------------------------------------
    ##  Uncomment for 250mm build
    #G0 X125 Y125 Z30 F3600
    
    ##  Uncomment for 300 build
    G0 X150 Y150 Z30 F3600
    
    ##  Uncomment for 350mm build
    #G0 X175 Y175 Z30 F3600
    #--------------------------------------------------------------------
    RESTORE_GCODE_STATE NAME=STATE_G32
   
[gcode_macro PRINT_START]
																							   
gcode:
  # This part fetches data from your slicer. Such as bed, extruder, and chamber temps and size of your printer.
  {% set target_bed = params.BED|int %}
  {% set target_extruder = params.EXTRUDER|int %}
  {% set target_chamber = params.CHAMBER|default("45")|int %}
  {% set x_wait = printer.toolhead.axis_maximum.x|float / 2 %}
  {% set y_wait = printer.toolhead.axis_maximum.y|float / 2 %}

  ##  Uncomment for Beacon Contact (1 of 4 for beacon contact)
  #SET_GCODE_OFFSET Z=0                                 # Set offset to 0

  # Home the printer, set absolute positioning and update the Stealthburner LEDs.
  STATUS_HOMING                                         # Set LEDs to homing-mode
														  
  G28                                                   # Full home (XYZ)
  G90                                                   # Absolute position

  ##  Uncomment for bed mesh (1 of 2 for bed mesh)
  BED_MESH_CLEAR                                       # Clear old saved bed mesh (if any)

  # Check if the bed temp is higher than 90c - if so then trigger a heatsoak.
  {% if params.BED|int > 90 %}
    SET_DISPLAY_TEXT MSG="Bed: {target_bed}c"           # Display info on display
    STATUS_HEATING                                      # Set LEDs to heating-mode
    M106 S255                                           # Turn on the PT-fan

    ##  Uncomment if you have a Nevermore.
    #SET_PIN PIN=nevermore VALUE=1                      # Turn on the nevermore

    G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
    ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
    M190 S{target_bed}                                  # Set the target temp for the bed
    SET_DISPLAY_TEXT MSG="Heatsoak: {target_chamber}c"  # Display info on display
    TEMPERATURE_WAIT SENSOR="temperature_sensor chamber" MINIMUM={target_chamber}   # Waits for chamber temp

  # If the bed temp is not over 90c, then skip the heatsoak and just heat up to set temp with a 5 min soak
  {% else %}
    SET_DISPLAY_TEXT MSG="Bed: {target_bed}c"           # Display info on display
    STATUS_HEATING                                      # Set LEDs to heating-mode
    G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
    ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
    M190 S{target_bed}                                  # Set the target temp for the bed
    SET_DISPLAY_TEXT MSG="Soak for 5 min"               # Display info on display
    G4 P300000                                          # Wait 5 min for the bedtemp to stabilize
  {% endif %}

  # Heat hotend to 150c. This helps with getting a correct Z-home.
  SET_DISPLAY_TEXT MSG="Hotend: 150c"                   # Display info on display
  M109 S150                                             # Heat hotend to 150c

  ##  Uncomment for Beacon contact (2 of 4 for beacon contact)
  #G28 Z METHOD=CONTACT CALIBRATE=1                     # Calibrate z offset and beacon model

  ##  Uncomment for Trident (Z_TILT_ADJUST)
  #SET_DISPLAY_TEXT MSG="Leveling"                      # Display info on display
  #STATUS_LEVELING                                      # Set LEDs to leveling-mode
  #Z_TILT_ADJUST                                        # Level the printer via Z_TILT_ADJUST
  #G28 Z                                                # Home Z again after Z_TILT_ADJUST

  ##  Uncomment for V2.4 (Quad gantry level AKA QGL)
  SET_DISPLAY_TEXT MSG="Leveling"                      # Display info on display
  STATUS_LEVELING                                      # Set LEDs to leveling-mode
  QUAD_GANTRY_LEVEL                                    # Level the printer via QGL
  G28 Z                                                # Home Z again after QGL

  ##  Uncomment for bed mesh (2 of 2 for bed mesh)
  SET_DISPLAY_TEXT MSG="Bed mesh"                      # Display info on display
  STATUS_MESHING                                       # Set LEDs to bed mesh-mode
  BED_MESH_CALIBRATE                                   # Start the bed mesh (add ADAPTIVE=1) for adaptive bed mesh

  ## Uncomment for Beacon Contact (3 of 4 for beacon contact)
  #G28 Z METHOD=CONTACT CALIBRATE=0                     # Calibrate z offset only with hot nozzle

  # Heat up the hotend up to target via data from slicer
  SET_DISPLAY_TEXT MSG="Hotend: {target_extruder}c"     # Display info on display
  STATUS_HEATING                                        # Set LEDs to heating-mode
  G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
  ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
  M107                                                  # Turn off partcooling fan
  M109 S{target_extruder}                               # Heat the hotend to set temp

  ##   Uncomment for Beacon Contact (4 of 4 for beacon contact)
  #SET_GCODE_OFFSET Z=0.06                              # Add a little offset for hotend thermal expansion

  # Get ready to print by doing a primeline and updating the LEDs
  SET_DISPLAY_TEXT MSG="Printer goes brr"               # Display info on display
  STATUS_PRINTING                                       # Set LEDs to printing-mode
  #G0 X{x_wait - 50} Y4 F10000                           # Go to starting point
  #G0 X{x_wait - 50} Y10 F10000                          # Go to starting point: gfp 8/8/25 adj for MC added thickness
  G0 X{x_wait - 50} Y15 F10000                          # Go to starting point: gfp 8/13/25 adj for MC added thickness
  G0 Z0.4                                               # Raise Z to 0.4
  G91                                                   # Incremental positioning 
  G1 X100 E20 F1000                                     # Primeline
  G90                                                   # Absolute position
  
[gcode_macro PRINT_END]
#   Use PRINT_END for the slicer ending script - please customise for your slicer of choice
gcode:
    # safe anti-stringing move coords
    {% set th = printer.toolhead %}
    {% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}
    {% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}
    {% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}
    
    SAVE_GCODE_STATE NAME=STATE_PRINT_END
    
    M400                           ; wait for buffer to clear
    G92 E0                         ; zero the extruder
    G1 E-5.0 F1800                 ; retract filament
    
    TURN_OFF_HEATERS
    
    G90                                      ; absolute positioning
    G0 X{x_safe} Y{y_safe} Z{z_safe} F20000  ; move nozzle to remove stringing
    ;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600  ; park nozzle at rear
    G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600  ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end
    G0 Z25 F3600  ; 08/09/25 gfp adj to raise extruder 25mm   
    M107                                     ; turn off fan
    
    BED_MESH_CLEAR
    RESTORE_GCODE_STATE NAME=STATE_PRINT_END


[gcode_macro CHOME]
description: Homes XYZ axis only if printer is in a non-homed state
gcode:
  {% if "xyz" not in printer.toolhead.homed_axes %}
    G28
  {% endif %}

[gcode_macro FRONT]
description: Moves the toolhead to the front
gcode:
  CHOME
  {% set x_center = printer.toolhead.axis_maximum.x|float / 2.0 %}
  {% set y_center = printer.toolhead.axis_maximum.y|float / 2.0 %}
  G90
  G1 X{x_center} Y10 F7800

[gcode_macro _LOGO_PENDING]
gcode:
  SET_LED LED=rgb_light RED=0.15 GREEN=0.5 BLUE=0.75 WHITE=0 INDEX=1

[gcode_macro _LOGO_READY]
gcode:
  SET_LED LED=rgb_light RED=0.99 GREEN=0.0 BLUE=0.0 WHITE=0 INDEX=1

[gcode_macro _LOGO_OFF]
gcode:
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=1
  

[gcode_macro _HEADLIGHT_ON]
gcode:
  SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=2 TRANSMIT=0
  SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=3


[gcode_macro _HEADLIGHT_OFF]
gcode:
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=2 TRANSMIT=0
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=3
  

[gcode_macro UNLOAD_FILAMENT]
description: Unloads filament from toolhead
gcode:
  {% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}
  {% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}
  {% set CURRENT_TARGET = printer.extruder.target|float %}
  CHOME
  G91                         ; relative positioning
  G1 Z20                      ; move nozzle upwards
  FRONT                       ; move the toolhead to the front
  {% if EXTRUDER_TEMP != 0 %}
    ;_LOGO_PENDING
    STATUS_HEATING ;06/07/25 gfp chg to something that works
    SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}" 
    {% if CURRENT_TARGET < EXTRUDER_TEMP %}
      M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot
    {% endif %}
    TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach
  {% endif %}
  ;_LOGO_READY
  STATUS_READY ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Starting unload" 
  M83                         ; set extruder to relative mode
  G1 E10 F300                 ; extrude a little to soften tip
  G1 E-8 F3600                ; quickly retract a small amount to elimate stringing
  G4 P200                     ; pause for a short amount of time
  G1 E-50 F400                ; retract slowly the rest of the way
  G1 E-20 F300
  M400                        ; wait for moves to finish
  M117 Unload Complete!
  ;_LOGO_OFF
  STATUS_OFF ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Unload Complete" 

[gcode_macro LOAD_FILAMENT]
description: Loads new filament into toolhead
gcode:
  {% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}
  {% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}
  {% set CURRENT_TARGET = printer.extruder.target|float %}
  FRONT                       ; move the toolhead to the front
  {% if EXTRUDER_TEMP != 0 %}
    ;_LOGO_PENDING
    STATUS_HEATING ;06/07/25 gfp chg to something that works
    SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}" 

    {% if CURRENT_TARGET < EXTRUDER_TEMP %}
      M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot
    {% endif %}
    TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach
  {% endif %}
  ;_LOGO_READY
  STATUS_READY ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Starting unload" 
;  _HEADLIGHT_ON
  M83                         ; set extruder to relative mode
  G1 E50 F300                 ; extrude slowlyL
  G1 E50 F300
  M400                        ; wait for moves to finish
  M117 Load Complete!
  ;_LOGO_OFF
  STATUS_OFF ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Unload Complete" 
  ;_HEADLIGHT_OFF


;<---------------------- 06/17/25 gfp another try at color change using Ellis' macros ---------------------->
[pause_resume]

[gcode_macro PAUSE]
rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                                  ; disable filament sensor 06/17/25 gfp commented out
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        BASE_PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro M600]
;rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                                  ; disable filament sensor 06/17/25 gfp commented out
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        ;BASE_PAUSE                                                                           ; pause print
        PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro RESUME]
rename_existing: BASE_RESUME
variable_zhop: 0
variable_etemp: 0
gcode:
    # Parameters
    {% set e = params.E|default(2.5)|int %}                                          ; hotend prime amount (in mm)

    {% if printer['pause_resume'].is_paused|int == 1 %}
        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                         ; disable filament sensor 06/17/25 gfp commented out
        #INITIAL_RGB                                                                 ; reset LCD color
        SET_IDLE_TIMEOUT TIMEOUT={printer.configfile.settings.idle_timeout.timeout}  ; set timeout back to configured value
        {% if etemp > 0 %}
            M109 S{etemp|int}                                                        ; wait for hotend to heat back up
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSEPARK MOVE=1 MOVE_SPEED=100                     ; go back to parked position in case toolhead was moved during pause (otherwise the return zhop can error)
        G91                                                                          ; relative positioning
        M83                                                                          ; relative extruder positioning
        {% if printer[printer.toolhead.extruder].temperature >= printer.configfile.settings.extruder.min_extrude_temp %}
            G1 Z{zhop * -1} E{e} F900                                                ; prime nozzle by E, lower Z back down
        {% else %}
            G1 Z{zhop * -1} F900                                                     ; lower Z back down without priming (just in case we are testing the macro with cold hotend)
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSE MOVE=1 MOVE_SPEED=60                          ; restore position
        BASE_RESUME                                                                  ; resume print
    {% endif %}

[gcode_macro TEST_SPEED]
# Home, get position, throw around toolhead, home again.
# If MCU stepper positions (first line in GET_POSITION) are greater than a full step different (your number of microsteps), then skipping occured.
# We only measure to a full step to accomodate for endstop variance.
# Example: TEST_SPEED SPEED=300 ACCEL=5000 ITERATIONS=10

description: Test for max speed and acceleration parameters for the printer. Procedure: Home -> ReadPositionFromMCU -> MovesToolhead@Vel&Accel -> Home -> ReadPositionfromMCU

gcode:
    # Speed
    {% set speed  = params.SPEED|default(printer.configfile.settings.printer.max_velocity)|int %}
    # Iterations
    {% set iterations = params.ITERATIONS|default(5)|int %}
    # Acceleration
    {% set accel  = params.ACCEL|default(printer.configfile.settings.printer.max_accel)|int %}
    # Minimum Cruise Ratio
    {% set min_cruise_ratio = params.MIN_CRUISE_RATIO|default(0.5)|float %}
    # Bounding inset for large pattern (helps prevent slamming the toolhead into the sides after small skips, and helps to account for machines with imperfectly set dimensions)
    {% set bound = params.BOUND|default(20)|int %}
    # Size for small pattern box
    {% set smallpatternsize = SMALLPATTERNSIZE|default(20)|int %}
    
    # Large pattern
        # Max positions, inset by BOUND
        {% set x_min = printer.toolhead.axis_minimum.x %}
        {% if x_min < 0 %}
            {% set x_min = 0 %}
        {% endif %}
    
        {% set y_min = printer.toolhead.axis_minimum.y %}
        {% if y_min < 0 %}
            {% set y_min = 0 %}
        {% endif %}
    
        {% set x_min = x_min + bound %}
        {% set x_max = printer.toolhead.axis_maximum.x - bound %}
        {% set y_min = y_min + bound %}
        {% set y_max = printer.toolhead.axis_maximum.y - bound %}
    
    # Small pattern at center
        # Find X/Y center point
        {% set x_center = (printer.toolhead.axis_minimum.x|float + printer.toolhead.axis_maximum.x|float ) / 2 %}
        {% set y_center = (printer.toolhead.axis_minimum.y|float + printer.toolhead.axis_maximum.y|float ) / 2 %}
        
        # Set small pattern box around center point
        {% set x_center_min = x_center - (smallpatternsize/2) %}
        {% set x_center_max = x_center + (smallpatternsize/2) %}
        {% set y_center_min = y_center - (smallpatternsize/2) %}
        {% set y_center_max = y_center + (smallpatternsize/2) %}

    # Save current gcode state (absolute/relative, etc)
    SAVE_GCODE_STATE NAME=TEST_SPEED
    
    # Output parameters to g-code terminal
    { action_respond_info("TEST_SPEED: starting %d iterations at speed %d, accel %d" % (iterations, speed, accel)) }
    
    # Home and get position for comparison later:
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28
        # QGL if not already QGLd (only if QGL section exists in config)
        {% if printer.configfile.settings.quad_gantry_level %}
            {% if printer.quad_gantry_level.applied == False %}
                QUAD_GANTRY_LEVEL
                G28 Z
            {% endif %}
        {% endif %} 
        # Move 50mm away from max position and home again (to help with hall effect endstop accuracy - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/24)
        G90
        G1 X{printer.toolhead.axis_maximum.x-50} Y{printer.toolhead.axis_maximum.y-50} F{30*60}
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28 X Y
        G0 X{printer.toolhead.axis_maximum.x-1} Y{printer.toolhead.axis_maximum.y-1} F{30*60}
        G4 P1000 
        GET_POSITION

    # Go to starting position
    G0 X{x_min} Y{y_min} Z{bound + 10} F{speed*60}

    # Set new limits
    {% if printer.configfile.settings.printer.minimum_cruise_ratio is defined %}
        SET_VELOCITY_LIMIT VELOCITY={speed} ACCEL={accel} MINIMUM_CRUISE_RATIO={min_cruise_ratio}
    {% else %}
        SET_VELOCITY_LIMIT VELOCITY={speed} ACCEL={accel} ACCEL_TO_DECEL={accel / 2}
    {% endif %}

    {% for i in range(iterations) %}
        # Large pattern diagonals
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_max} Y{y_max} F{speed*60}
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
        G0 X{x_min} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
        
        # Large pattern box
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_min} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
    
        # Small pattern diagonals
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_max} Y{y_center_max} F{speed*60}
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
        G0 X{x_center_min} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
        
        # Small pattern box
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_min} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
    {% endfor %}

    # Restore max speed/accel/accel_to_decel to their configured values
    {% if printer.configfile.settings.printer.minimum_cruise_ratio is defined %}
        SET_VELOCITY_LIMIT VELOCITY={printer.configfile.settings.printer.max_velocity} ACCEL={printer.configfile.settings.printer.max_accel} MINIMUM_CRUISE_RATIO={printer.configfile.settings.printer.minimum_cruise_ratio} 
    {% else %}
        SET_VELOCITY_LIMIT VELOCITY={printer.configfile.settings.printer.max_velocity} ACCEL={printer.configfile.settings.printer.max_accel} ACCEL_TO_DECEL={printer.configfile.settings.printer.max_accel_to_decel}
    {% endif %}

    # Re-home and get position again for comparison:
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28 # This is a full G28 to fix an issue with CoreXZ - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/12
        # Go to XY home positions (in case your homing override leaves it elsewhere)
        G90
        G0 X{printer.toolhead.axis_maximum.x-1} Y{printer.toolhead.axis_maximum.y-1} F{30*60}
        G4 P1000 
        GET_POSITION

    # Restore previous gcode state (absolute/relative, etc)
    RESTORE_GCODE_STATE NAME=TEST_SPEED
        

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	  -0.028569, 0.045181, 0.051431, 0.016431, -0.047319
#*# 	  -0.013569, 0.017681, 0.015181, 0.010181, -0.034819
#*# 	  -0.006069, -0.001069, 0.000181, -0.004819, -0.011069
#*# 	  -0.067319, -0.023569, -0.001069, -0.017319, -0.041069
#*# 	  -0.006069, -0.023569, -0.037319, -0.044819, -0.078569
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 35.0
#*# max_y = 250.0
#*#
#*# [probe]
#*# z_offset = -1.680

Starting from the top:

the two includes and the ‘[mcu]’ sections stay in ‘250916_Printer_Specific_printer.cfg’, and the ‘[mcu nhk]’ section goes to ‘250916_T0_Specific_printer.cfg’:
The following stay in ‘Printer’:

The [extruder] and [tmc2209 extruder] sections go to ‘T0_Specific’

the [heater_bed] section stays.

The [probe], [fan] (print cooling fan) and [heater_fan hotend_fan] sections go.

The [output_pin caselight] and [output_pin pcb_led] sections stay

The ### Accelerometer ### and ### TH ### sections go

Everything else stays in ‘Printer_Specific’.

I inserted ‘[include 250916_T0_Specific_printer.cfg] just before ‘### Homing and Gantry Adjustment Routines ###’ and then saved the ‘Printer_Specific’ file to ‘MissChager/Config Files/printer.cfg’.

In ‘T0_Specific I changed all ‘nhk:’ entries to ‘nhk0:’ and then saved the file.

Then I ssh’d into the raspberry pi and deleted the existing ‘printer.cfg’

Then, using the following ‘SCP’ command, I copied ‘C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\printer.cfg’ and ‘C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\250916_T0_Specific_printer.cfg’ to the raspberry pi.

C:\Users\Frank>scp "C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\printer.cfg" pi@192.168.1.184:/home/pi/printer_data/config/
pi@192.168.1.184's password:
printer.cfg  

C:\Users\Frank>scp "C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\250916_T0_Specific_printer.cfg" pi@192.168.1.184:/home/pi/printer_data/config/
pi@192.168.1.184's password:
250916_T0_Specific_printer.cfg

C:\Users\Frank>scp "C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\printer.cfg" pi@192.168.1.184:/home/pi/printer_data/config/

pi@192.168.1.184's password:

printer.cfg

C:\Users\Frank>scp "C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\250916_T0_Specific_printer.cfg" pi@192.168.1.184:/home/pi/printer_data/config/

pi@192.168.1.184's password:

250916_T0_Specific_printer.cfg

Then, in the MainSail view, I verified that ‘printer.cfg’ on the raspberry pi had been changed, and clicked on ‘Save and Restart’. This resulted in the following error:

Then I restarted the host (printer) and this rebooted the raspberry. This succeeded and I got back into the Mainsail window:

ASSIDE: I noticed when the Mainsail window came up that the ‘ToolChanger’ plugin (along with some others) had the ‘Update’ option activated, so maybe Vin did some more work on that overnight. I left it alone for the moment, not wanting to add yet another variable to the problem.

I attempted to print my simple strap tensioner. It started out OK with the printer homing and going on from there. Interestingly, the Mainsail ‘Dashboard’ window only showed two temperatures – extruder and heatbed.

This test succeeded. The ‘split config’ test worked great. The test print came out fine, with no need for ‘fine tuning’ and the Mainsail display looked OK too.

I think the next logical step would be to add in the raft of [include] statements that are in the MissChanger ‘printer.cfg’ but not in the one I just tested. Before doing that, however, I want to perform all the file updates advertised in the ‘machine’ view

This seemed to work fine, so I proceeded to the next step – adding all the [include xxxx] to the top of printer.cfg.

After making these changes and restarting the printer, I got an error message

Then I used ‘grep -r “safe_z_homing” to find all files with that string. This led me to klipper/klippy/extras/safe_z_home.py, where I found the following:

 if config.has_section("homing_override"):
            raise config.error("homing_override and safe_z_homing cannot"
                               +" be used simultaneously")

if config.has_section("homing_override"):

raise config.error("homing_override and safe_z_homing cannot"

+" be used simultaneously")

I looked for ‘homing_override’ in printer.cfg but could not find it. Then I looked for the same thing in the 250916_T0_Specific_printer.cfg file but couldn’t find it there either. Then I looked for safe_z_homing’ and found ‘[safe_z_home]’ (not the same, but close) in printer.cfg.

Then I looked into ‘/home/pi/klipper-toolchanger/macros/homing.cfg’ (one of the files included from MissChanger, where I found the following:

[force_move]
    enable_force_move: True

[homing_override]
axes: xyz
gcode:
    ## Trigger variables
    {% set x = 0 %}
    {% set y = 0 %}
    {% set z = 0 %}
    {% set a = 0 %}

    ## Set up variables
    {% set center_x = printer["gcode_macro _home"].xh|float %}
    {% set center_y = printer["gcode_macro _home"].yh|float %}
    {% set safe_z  = printer['gcode_macro _static_variable'].calibration_safe_z|float %}
    {% set cur_z = printer.toolhead.position[2]|float %}

    ##  Engage trigger variables according to the input
    {% if params.X is defined %}
        {% set x = 1 %}                                                           # for x home
    {% endif %}
    {% if params.Y is defined %}
        {% set y = 1 %}                                                           # for y home
    {% endif %}
    {% if params.Z is defined %}
        {% set z = 1 %}                                                           # for z home
    {% endif %}
    {% if (x == 0 and y == 0 and z == 0) %}
        {% set a = 1 %}                                                           # for home all
    {% endif %}

    ### Homing Actions
    # Mandatory clearance moves ------------------------------------------------------
    INITIALIZE_TOOLCHANGER

[force_move]

enable_force_move: True

[homing_override]

axes: xyz

gcode:

## Trigger variables

{% set x = 0 %}

{% set y = 0 %}

{% set z = 0 %}

{% set a = 0 %}

## Set up variables

{% set center_x = printer["gcode_macro _home"].xh|float %}

{% set center_y = printer["gcode_macro _home"].yh|float %}

{% set safe_z = printer['gcode_macro _static_variable'].calibration_safe_z|float %}

{% set cur_z = printer.toolhead.position[2]|float %}

## Engage trigger variables according to the input

{% if params.X is defined %}

{% set x = 1 %} # for x home

{% endif %}

{% if params.Y is defined %}

{% set y = 1 %} # for y home

{% endif %}

{% if params.Z is defined %}

{% set z = 1 %} # for z home

{% endif %}

{% if (x == 0 and y == 0 and z == 0) %}

{% set a = 1 %} # for home all

{% endif %}

### Homing Actions

# Mandatory clearance moves ------------------------------------------------------

INITIALIZE_TOOLCHANGER

I don’t know if this is a ‘smoking gun’ or not. The error message (and the seems to indicate a conflict between ‘safe_z_homing’ and a [homing_override] section. So, I commented out the ‘[include misschanger_macros/homing.cfg] line and tried again.

This produced an error “option ‘pin’ not valid in section ‘probe’. Uncommenting the line

reproduced the ” ‘homing_override’ and ‘safe_z_homing’ cannot be used simultaneously” error

Got a note from ‘Vin’ saying that I needed to ‘disable’ the safe_z_homing section in printer.cfg. I finally figured out (with some help from Grok) that I needed to comment out the entire section.

When I did that, I got an error: “option ‘pin’ in section [probe] is invalid. So I commented out the ‘probe’ section in the ‘T0—.cfg’ file.

Now I get ‘unknown pin chip name nhk0’. There are 16 instances of ‘nhk0’ in the ‘T0—.cfg’ file and none in ‘printer.cfg’.

Thanks to some more help from Vin and others, I got through this one. It turns out the culprit was this line from ‘250916_T0_Specific_printer.cfg’:

[mcu nhk]
##  Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify
##--------------------------------------------------------------------
serial: /dev/serial/by-id/usb-Klipper_rp2040_4E363334320BB8A5-if00
restart_method: command
##--------------------------------------------------------------------

[mcu nhk]

## Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify

##--------------------------------------------------------------------

serial: /dev/serial/by-id/usb-Klipper_rp2040_4E363334320BB8A5-if00

restart_method: command

##--------------------------------------------------------------------

This line ‘names’ the mcu inside the toolhead as ‘nhk’, but all the pin definitions later on used the name ‘nhk0’ – oops! All I had to do was add a ‘0’ to the name, and that error went away — only to be replaced by yet another one. This one is:

Option 'speed' is not valid in section 'tmc2209 extruder'

1	Option 'speed' is not valid in section 'tmc2209 extruder'

I found the symbol ‘speed’ in my toolhead config file:

[tmc2209 extruder]
uart_pin: nhk0:gpio0
tx_pin: nhk0:gpio1
interpolate: false
run_current: 0.5
sense_resistor: 0.100
stealthchop_threshold: 0

#09/16/25 commented out
# [probe]
# ##  Inductive Probe
# ##  Connected to Z-PROBE
# ##  This probe is not used for Z height, only Quad Gantry Leveling
# #07/22/25 gfp modified for tap probe
# pin: nhk0:gpio10
# x_offset: 0
# #y_offset: 25.0
# #z_offset: 2.57
# #y_offset: 25.0
# y_offset: 0 #07/22/25 gfp modified for tap probe

#speed: 10.0 #09/16/25 commented out 
samples: 3
samples_result: median

[tmc2209 extruder]

uart_pin: nhk0:gpio0

tx_pin: nhk0:gpio1

interpolate: false

run_current: 0.5

sense_resistor: 0.100

stealthchop_threshold: 0

#09/16/25 commented out

# [probe]

# ## Inductive Probe

# ## Connected to Z-PROBE

# ## This probe is not used for Z height, only Quad Gantry Leveling

# #07/22/25 gfp modified for tap probe

# pin: nhk0:gpio10

# x_offset: 0

# #y_offset: 25.0

# #z_offset: 2.57

# #y_offset: 25.0

# y_offset: 0 #07/22/25 gfp modified for tap probe

#speed: 10.0 #09/16/25 commented out

samples: 3

samples_result: median

I commented it out – reloaded the file to the raspberry, and did a ‘firmware restart on the printer. Then the same thing happened with the ‘samples’ symbol in the same secton. Commented that out too, and went on. Same with ‘sample_result’, ‘sample_retract_dist’, ‘samples_tolerance’. Then the error changed to “Option ‘activate_gcode’ is not valid in section ‘tmc2209 extruder’ “. I commented this out, by then realizing that I had actually commented out the entire ‘probe’ section.

At this point I didn’t get any immediate (parsing?) errors, but Klipper wouldn’t restart with just the ‘Firmware Restart’ button. Tried ‘cycling power, ‘Klipper Restart’, and this resulted in the error: “mcu ‘nhk0’: Unable to connect”. Tried power cycling, which resulted in the “Klipper is attempting to restart” error. I looked at Klippy.log, and found a lot of references to not finding ‘mcu nhk’. This led me on a merry chase for quite a while, until I finally did a search for all instances of ‘nhk’ in my toolhead config file, where I found this one little teensy line:

#09/16/25 moved here from printer.cfg
## Connected to led (nitehawk sb)
[output_pin pcb_led]
pin: !nhk:gpio8

#09/16/25 moved here from printer.cfg

## Connected to led (nitehawk sb)

[output_pin pcb_led]

pin: !nhk:gpio8

So, I changed ‘nhk’ above to ‘nhk0’, reloaded the file to the raspberry and restarted the printer. Took me a couple of tries, and I finally had to resort to a power cycle, but then it came *all the way* back and now shows the following in the browser window:

Note that all four temps are now shown, including the heat bed temperature – Yay!!

17 September 2025 Update:

Well, maybe I spoke too soon. I tried a test print and got an error saying the extruder temp was too low and a jinja ‘undetermined error’. See the following screenshot:

So now it appears that the PRINT_START macro in printer.cfg is not executing when the line ‘print_start EXTRUDER=240 BED=90’ is encountered in the gcode. I have no idea why this happened, so I’m now officially lost. I think I’m going to (once again) revert to my single working printer.cfg, and work my way back into the two-file configuration while watching closely to see where the system breaks.

I ssh’d into raspberry and used the Windows ‘SCP’ command to overwrite the current printer.cfg. Unfortunately, this time Klipper came back up complaining about “Unknown pin chip name ‘nhk0’ “. This was due to my changing ‘nhk’ to ‘nhk0’ in ‘stealthburner_leds.cfg’, so I changed it back and now everything looks good.

Tried a test print and it went well, *except* the ‘Heatsoak’ display message said ’45c’ instead of ‘100c’. I tracked this down to a bug in PRINT_START and fixed it – so moving on. I completed the test print and confirmed that I could save the ‘fine tune’ result.

Now back to our regularly scheduled program: Following the above procedure, I once again started dividing my known-good printer.cfg into two parts, but this time armed with a bit more knowledge about symbol & object naming.

Move ‘[include stealthburner_leds.cfg]’ include to T0
Move the [mcu nhk] section to T0
Move the [extruder] and [tmc2209 extruder] sections to T0
Move the [probe], [fan] (print cooling fan) and [heater_fan hotend_fan] sections to T0
Move the [output_pin pcb_led], Accelerometer and TH sections to T0

Change all instances of ‘nhk’ to ‘nhk0’ in T0 (20 instances)

Insert [include ./250917_T0-StealthNhk-CW-Revo.cfg] just before ‘### Homing and Gantry Adjustment Routines ###’

Save ‘printer.cfg’ and ‘250917_T0-StealthNhk-CW-Revo.cfg’ and then transfer them to the raspberry pi.

Reboot the printer

After clearing up a few typo issues, the printer came back up and I was able to print my test model with no issues, and the little ‘fine tune’ adjustment was saved with no fuss – YAY!!

Not so fast!! I discovered that I had the ‘include stealthburner_leds.cfg’ line in printer.cfg and 250917_T0-StealthNhk-CW-Revo.cfg, so I deleted it from printer.cfg, rebooted, and tried the print again. The print completed successfully. Tomorrow I’ll try adding the MissChanger specific includes – but not before saving this file pair several times in different places so I don’t have to start from scratch — again!

18 September 2022 Update:

Saved ‘printer.cfg’ to

C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\250918_Working_Without_Misschanger_Includes_printer.cfg

Saved ‘250917_T0-StealthNhk-CW-Revo.cfg’ to:

C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\250918_Working_250917_T0-StealthNhk-CW-Revo.cfg

Then I added the MissChanger-specific includes to the top of printer.cfg, rebooted, and got the ‘homing_override and safe_z_homing cannot be used simultaneously’ error. From previous work,

Got a note from ‘Vin’ saying that I needed to ‘disable’ the safe_z_homing section in printer.cfg. I finally figured out (with some help from Grok) that I needed to comment out the entire section.

1	Got a note from ‘Vin’ saying that I needed to ‘disable’ the safe_z_homing section in printer.cfg. I finally figured out (with some help from Grok) that I needed to comment out the entire section.

Unfortunately, I can’ seem to find a ‘safe_z_homing’ section in either file. Did a grep safe_z_homing on the raspberry, and got a bunch of hits, but the one that seems relevant is in ‘klipper/klippy/extras/safe_z_home.py’

 if config.has_section("homing_override"):
            raise config.error("homing_override and safe_z_homing cannot"
                               +" be used simultaneously")

if config.has_section("homing_override"):

raise config.error("homing_override and safe_z_homing cannot"

+" be used simultaneously")

Then I did a ‘grep -r homing_override’ and got lots and lots of hits, but nothing in user space. So I did a ‘grep -r safe_z_homing’ and got no hits in user space.

19 September Update:

In response to my ‘What am I missing (again!) plea for help, Vin replied:

yes. you are missing a lot. Please go back to the configuration instruction and check again

1	yes. you are missing a lot. Please go back to the configuration instruction and check again

So, back to the example printer.cfg, where I found that I had completely ignored the ‘Session Variables’ section that needs to be added just before the *** SAVE_CONFIG**** section. The instructions are:

Add the Section Variables section.

These sections need to be placed just before the SAVE_CONFIG section, as shown in the sample printer.cfg. Everything below the Section Variable marker will be swapped in and out upon the CONFIG_TOGGLE macro. If a function setting already exists somewhere else in printer.cfg, the old function will need to be transferred to the new location and updated.

The critical settings that need to be changed are as follows:

[gcode_macro _home] needs to adjusted with the appropriate xh and yh which represents the centre of the new build area (i.e. 150, 85 for a 300x300 bed).

variable_dock is the indicator of which config is being used.

Before installing the dock and other tool-heads. Set this to False. Then, set up T0 (the reference tool-head), see Step 3. The [quad_gantry_level] or z_tilt (for Trident), and [bed_mesh] stay the same the same as stock.

After T0 is operational, run CONFIG TOGGLE

Then, install the physical dock. The [quad_gantry_level] or z_tilt (for Trident), and [bed_mesh] MUST be updated, as shown in the next 2 bullet points.

[quad_gantry_level], or z_tilt (for Trident), increase the y position of the front 2 points: to 130, to avoid crashing into the dock.

[bed_mesh], make sure that mesh_min: 30,130 , to avoid crashing into the dock.

If it exists in printer.cfg, disable [safe_z_home] (comment-out or delete)

Add relevant variable (see the code snippet below) under SAVE_CONFIG. [tool_probe T0] and [extruder] are needed no matter what your setup as it is the reference / default tool-head.

Add the Section Variables section.

These sections need to be placed just before the SAVE_CONFIG section, as shown in the sample printer.cfg. Everything below the Section Variable marker will be swapped in and out upon the CONFIG_TOGGLE macro. If a function setting already exists somewhere else in printer.cfg, the old function will need to be transferred to the new location and updated.

The critical settings that need to be changed are as follows:

[gcode_macro _home] needs to adjusted with the appropriate xh and yh which represents the centre of the new build area (i.e. 150, 85 for a 300x300 bed).

variable_dock is the indicator of which config is being used.

Before installing the dock and other tool-heads. Set this to False. Then, set up T0 (the reference tool-head), see Step 3. The [quad_gantry_level] or z_tilt (for Trident), and [bed_mesh] stay the same the same as stock.

After T0 is operational, run CONFIG TOGGLE

Then, install the physical dock. The [quad_gantry_level] or z_tilt (for Trident), and [bed_mesh] MUST be updated, as shown in the next 2 bullet points.

[quad_gantry_level], or z_tilt (for Trident), increase the y position of the front 2 points: to 130, to avoid crashing into the dock.

[bed_mesh], make sure that mesh_min: 30,130 , to avoid crashing into the dock.

If it exists in printer.cfg, disable [safe_z_home] (comment-out or delete)

Add relevant variable (see the code snippet below) under SAVE_CONFIG. [tool_probe T0] and [extruder] are needed no matter what your setup as it is the reference / default tool-head.

I found my first attempt at this from 09/16 (only 3 days ago?!!!), and after careful comparison of this version with the MissChanger example printer.cft, I constructed another one, as shown below. This version places the [gcode_macro _home], [bed_mesh] and [quad_gantry_level] sections properly within the ‘Session Variables’ section, and replaces the [bed_mesh] and [quad_gantry_level] sections with the versions from my original single-extruder printer.cfg, and adds [include ./250918_Working_T0-StealthNhk-CW-Revo.cfg] the [include] for the current working version of the toolhead.cfg file

[include mainsail.cfg]
## default marcros
[include misschanger_macros/config_switch.cfg]
[include misschanger_macros/homing.cfg]
[include misschanger_macros/nozzle_clean.cfg]
[include misschanger_macros/overwrite.cfg]
[include misschanger_macros/print_time_default.cfg]
[include misschanger_macros/tool_calibrate.cfg]
[include misschanger_macros/toolchanger.cfg]
[include misschanger_macros/offsets_adjust_record.cfg]
# ## optional default marcros
# [include misschanger_macros/tool_calibrate_extra.cfg]    # For the Nudge probe
## misschanger settings
[include misschanger_settings.cfg]
## Other macros
[include macro-general.cfg]
[include macro-testing.cfg]
# ...
# ...
# ...
[mcu]
##  Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify
##--------------------------------------------------------------------
serial: /dev/serial/by-id/usb-Klipper_stm32h743xx_2A001E000A51333038383535-if00
restart_method: command
##--------------------------------------------------------------------

####################################################################################
##	                         Others
####################################################################################
[config_switch]
[pause_resume]
[save_babies]
# ...
# ...
# ...

####################################################################################
##	                         Global Variables
####################################################################################
#--------------------------------------------------------------------
[gcode_macro _static_variable]
description: Global static variables that is used through out the configs
## Tool-head calibration
variable_calibration_probe_x: 241.237500     # X aproximate position of the calibration probe. CHANGE TO MATCH YOUR SET-UP
variable_calibration_probe_y: 329.825000     # Y aproximate position of the calibration probe. CHANGE TO MATCH YOUR SET-UP
variable_calibration_safe_z: 50.00           # Z aproximate safe position of the calibration probe. KEEP CONSERVATIVE TO AVOID COLLISION
variable_calibration_min_z: 30.00            # Z aproximate probe position of the calibration probe.
variable_probe_stable_time: 1000             # Time (in ms) to wait for calibration probe to reset. Default: 1000
variable_calibration_abs_z_seperately: 0     # "0" = False / "1" = True. For, the Nudge probe this should be '1'
variable_final_lift_z: 3                     # This must be the same as "final_lift_z" in [tools_calibrate] in misschanger_settings.cfg
## Cleaning dock
variable_clean_dock_x: 0                     # Set to "0" to disable. X aproximate position of the cleaning dock. CHANGE TO MATCH YOUR SET-UP.
variable_clean_speed: 7000                   # Don't set too high, the violent shaking may cause problems. CHANGE TO MATCH YOUR SET-UP.
variable_clean_temp: 200                     # Nozzle clean temperature.
variable_clean_threshold: 150.0              # The minimum perimeter of the print, below which no mid-print cleaning of the nozzle will occur.
## Always on crash detection
variable_alway_on_crash_detection: 0         # "0" = False (off) / "1" = True (on)
## For heatsoak macro
variable_heatsoak_temp: 0                    # Set to "0" to disable. Chamber temperature target for heat soak. REQUIRES [temperature_sensor Chamber] below.
## Dynamic thermal expansion compensation
variable_thermo_expand_offset: -0.080        # Maximum z offset for thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
variable_thermo_expand_temp_high: 70         # Chamber temp to apply maximum z offset for thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
variable_thermo_expand_temp_low: 0           # Set to "0" to disable. Chamber temp start applying thermal expansion compensation. REQUIRES [temperature_sensor Chamber]
## Fan control
variable_nm_ciculation_speed: 1.00           # Nevermore Stealth Max fan speed in circulation mode
variable_nm_exhaust_speed: 1.00              # Nevermore Stealth Max fan speed in exhaust mode
variable_chamber_ciculation_speed: 0.25      # Chamber fan speed in chamber-heating mode
variable_chamber_temp_threshold: 91          # If bed temp is below this temperature, then don't enable chamber-heating mode
gcode:                                       # This is here to appease klipper
# ...
# ...
# ...


[printer]
kinematics: corexy
max_velocity: 300  
#max_accel: 10000
max_accel: 15000 #gfp 08/12/25 per Ellis' tuning guide

max_z_velocity: 15          #Max 15 for 12V TMC Drivers, can increase for 24V
max_z_accel: 350
square_corner_velocity: 5.0

#####################################################################
#   X/Y Stepper Settings
#####################################################################

##  B Stepper - Left
##  Connected to HV STEPPER 0
##  Endstop connected to X-ENDSTOP
[stepper_x]
step_pin: PB10
dir_pin: !PB11
enable_pin: !PG0
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC1
position_min: 0
##--------------------------------------------------------------------

##  Uncomment below for 250mm build
#position_endstop: 250
#position_max: 250

##  Uncomment for 300mm build
position_endstop: 300
position_max: 300

##  Uncomment for 350mm build
#position_endstop: 350
#position_max: 350

##--------------------------------------------------------------------
homing_speed: 25   #Max 100
homing_retract_dist: 5
homing_positive_dir: true

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc5160 stepper_x]
cs_pin: PE15
spi_bus: spi4
#diag0_pin: ^!PG1
interpolate: false
run_current: 0.8
sense_resistor: 0.075
stealthchop_threshold: 0

##  A Stepper - Right
##  Connected to HV STEPPER 1
##  Endstop connected to Y-ENDSTOP
[stepper_y]
step_pin: PF15
dir_pin: !PF14
enable_pin: !PE9
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC2
position_min: 0
##--------------------------------------------------------------------

##  Uncomment for 250mm build
#position_endstop: 250
#position_max: 250

##  Uncomment for 300mm build
position_endstop: 310
position_max: 310

##  Uncomment for 350mm build
#position_endstop: 350
#position_max: 350

##--------------------------------------------------------------------
homing_speed: 25  #Max 100
homing_retract_dist: 5
homing_positive_dir: true

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc5160 stepper_y]
cs_pin: PE11
spi_bus: spi4
#diag0_pin: ^!PE10
interpolate: false
run_current: 0.8
sense_resistor: 0.075
stealthchop_threshold: 0
 
#####################################################################
#   Z Stepper Settings
#####################################################################

## Z0 Stepper - Front Left
##  Connected to STEPPER 0
##  Endstop connected to Z-ENDSTOP
[stepper_z]
step_pin: PD4
dir_pin: !PD3
enable_pin: !PD7
rotation_distance: 40
gear_ratio: 80:16  
microsteps: 32
#endstop_pin: PC3
endstop_pin: probe:z_virtual_endstop #07/12/25 gfp chg for Voron Tap mod
##  Z-position of nozzle (in mm) to z-endstop trigger point relative to print surface (Z0)
##  (+) value = endstop above Z0, (-) value = endstop below
##  Increasing position_endstop brings nozzle closer to the bed
##  After you run Z_ENDSTOP_CALIBRATE, position_endstop will be stored at the very end of your config
#position_endstop: -0.5
##--------------------------------------------------------------------

##  Uncomment below for 250mm build
#position_max: 230

##  Uncomment below for 300mm build
position_max: 280

##  Uncomment below for 350mm build
#position_max: 330

##--------------------------------------------------------------------
position_min: -5
homing_speed: 8
second_homing_speed: 3
homing_retract_dist: 3

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z]
uart_pin: PD5
#diag_pin: ^!PD6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z1 Stepper - Rear Left
##  Connected to STEPPER 1
[stepper_z1]
step_pin: PC12
dir_pin: PC11
enable_pin: !PD2
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z1]
uart_pin: PD0
#diag_pin: ^!PD1
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z2 Stepper - Rear Right
##  Connected to STEPPER 2
[stepper_z2]
step_pin: PC9
dir_pin: !PC8
enable_pin: !PC10
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z2]
uart_pin: PA8
#diag_pin: ^!PA15
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z3 Stepper - Front Right
##  Connected to STEPPER 3
[stepper_z3]
step_pin: PG7
dir_pin: PG6
enable_pin: !PC7
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z3]
uart_pin: PG8
#diag_pin: ^!PC6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0




####################################################################################
##	                 Temperature Monitoring
####################################################################################

####################################################################################
##	                 Temperature Monitoring
####################################################################################
# [temperature_sensor Chamber]
# sensor_type: Generic 3950
# sensor_pin: PF4
# # ...
# # ...
# # ...

# ####################################################################################
# ##                  FAN
# ####################################################################################

#09/14/25 copied from 250830_SecondToolhead_printer.cfg

#####################################################################
#   TH
# #####################################################################
#[temperature_sensor chamber_temp]
#[temperature_sensor chamber] #06/16/25 gfp chg to match variable name in PRINT_START >90C 'IF' block
[temperature_sensor Chamber] #09/14/25 gfp chg 'chamber' to 'Chamber'
#gfp 09/14/25 This is the chamber thermistor used for *all* toolheads, so is in printer.cfg, but is 
#actually connected to nhk0:gpio28

## Chamber Temperature - T1
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: nhk0:gpio28
min_temp: 0
max_temp: 100
gcode_id: chamber_th
#--------------------------------------------------------------------
[fan_generic fan_nevermore_stealthmax]
pin: PD13
max_power: 1.0
shutdown_speed: 0.0
cycle_time: 0.010
hardware_pwm: False
kick_start_time: 0.100
off_below: 0.05

#--------------------------------------------------------------------
# [fan_generic fan_chamber_heater]
# pin: PA8
# max_power: 1.0
# shutdown_speed: 0.0
# cycle_time: 0.010
# hardware_pwm: False
# kick_start_time: 0.100
# off_below: 0.05
# ...
# ...
# ...

####################################################################################
##                          Session Variables
####################################################################################
#;<    # Section Variable marker
#---------------------------------------------------------------
[include ./T0-StealthNhk-CW-Revo.cfg]


#---------------------------------------------------------------
#---------------------------------------------------------------
#09/12/25 replaced with 'stock' section from my printer.cfg
# [quad_gantry_level]
# # Gantry Corners for 350mm Build
# gantry_corners:
	# -60,-10
	# 410,420
# # Probe points
# points:
	# 50,130
	# 50,300
	# 300,300
	# 300,130

# speed: 150                   # Levelling speed
# horizontal_move_z: 15        # Z-axis starting height
# retries: 10                  # Number of out-of-tolerance retries
# retry_tolerance: 0.0075      # Sampling tolerance
# max_adjust: 20               # Maximum adjustment stroke for levelling



[gcode_macro PRINT_START]
																							   
gcode:
  # This part fetches data from your slicer. Such as bed, extruder, and chamber temps and size of your printer.
  {% set target_bed = params.BED|int %}
  {% set target_extruder = params.EXTRUDER|int %}
  {% set target_chamber = params.CHAMBER|default("45")|int %}
  {% set x_wait = printer.toolhead.axis_maximum.x|float / 2 %}
  {% set y_wait = printer.toolhead.axis_maximum.y|float / 2 %}

  ##  Uncomment for Beacon Contact (1 of 4 for beacon contact)
  #SET_GCODE_OFFSET Z=0                                 # Set offset to 0

  # Home the printer, set absolute positioning and update the Stealthburner LEDs.
  STATUS_HOMING                                         # Set LEDs to homing-mode
														  
  G28                                                   # Full home (XYZ)
  G90                                                   # Absolute position

  ##  Uncomment for bed mesh (1 of 2 for bed mesh)
  BED_MESH_CLEAR                                       # Clear old saved bed mesh (if any)

  # Check if the bed temp is higher than 90c - if so then trigger a heatsoak.
  {% if params.BED|int > 90 %}
    SET_DISPLAY_TEXT MSG="Bed: {target_bed}c"           # Display info on display
    STATUS_HEATING                                      # Set LEDs to heating-mode
    M106 S255                                           # Turn on the PT-fan

    ##  Uncomment if you have a Nevermore.
    #SET_PIN PIN=nevermore VALUE=1                      # Turn on the nevermore

    G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
    ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
    M190 S{target_bed}                                  # Set the target temp for the bed
    SET_DISPLAY_TEXT MSG="Heatsoak: {target_chamber}c"  # Display info on display
    TEMPERATURE_WAIT SENSOR="temperature_sensor chamber" MINIMUM={target_chamber}   # Waits for chamber temp

  # If the bed temp is not over 90c, then skip the heatsoak and just heat up to set temp with a 5 min soak
  {% else %}
    SET_DISPLAY_TEXT MSG="Bed: {target_bed}c"           # Display info on display
    STATUS_HEATING                                      # Set LEDs to heating-mode
    G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
    ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
    M190 S{target_bed}                                  # Set the target temp for the bed
    SET_DISPLAY_TEXT MSG="Soak for 5 min"               # Display info on display
    G4 P300000                                          # Wait 5 min for the bedtemp to stabilize
  {% endif %}

  # Heat hotend to 150c. This helps with getting a correct Z-home.
  SET_DISPLAY_TEXT MSG="Hotend: 150c"                   # Display info on display
  M109 S150                                             # Heat hotend to 150c

  ##  Uncomment for Beacon contact (2 of 4 for beacon contact)
  #G28 Z METHOD=CONTACT CALIBRATE=1                     # Calibrate z offset and beacon model

  ##  Uncomment for Trident (Z_TILT_ADJUST)
  #SET_DISPLAY_TEXT MSG="Leveling"                      # Display info on display
  #STATUS_LEVELING                                      # Set LEDs to leveling-mode
  #Z_TILT_ADJUST                                        # Level the printer via Z_TILT_ADJUST
  #G28 Z                                                # Home Z again after Z_TILT_ADJUST

  ##  Uncomment for V2.4 (Quad gantry level AKA QGL)
  SET_DISPLAY_TEXT MSG="Leveling"                      # Display info on display
  STATUS_LEVELING                                      # Set LEDs to leveling-mode
  QUAD_GANTRY_LEVEL                                    # Level the printer via QGL
  G28 Z                                                # Home Z again after QGL

  ##  Uncomment for bed mesh (2 of 2 for bed mesh)
  SET_DISPLAY_TEXT MSG="Bed mesh"                      # Display info on display
  STATUS_MESHING                                       # Set LEDs to bed mesh-mode
  BED_MESH_CALIBRATE                                   # Start the bed mesh (add ADAPTIVE=1) for adaptive bed mesh

  ## Uncomment for Beacon Contact (3 of 4 for beacon contact)
  #G28 Z METHOD=CONTACT CALIBRATE=0                     # Calibrate z offset only with hot nozzle

  # Heat up the hotend up to target via data from slicer
  SET_DISPLAY_TEXT MSG="Hotend: {target_extruder}c"     # Display info on display
  STATUS_HEATING                                        # Set LEDs to heating-mode
  G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
  ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
  M107                                                  # Turn off partcooling fan
  M109 S{target_extruder}                               # Heat the hotend to set temp

  ##   Uncomment for Beacon Contact (4 of 4 for beacon contact)
  #SET_GCODE_OFFSET Z=0.06                              # Add a little offset for hotend thermal expansion

  # Get ready to print by doing a primeline and updating the LEDs
  SET_DISPLAY_TEXT MSG="Printer goes brr"               # Display info on display
  STATUS_PRINTING                                       # Set LEDs to printing-mode
  #G0 X{x_wait - 50} Y4 F10000                           # Go to starting point
  #G0 X{x_wait - 50} Y10 F10000                          # Go to starting point: gfp 8/8/25 adj for MC added thickness
  G0 X{x_wait - 50} Y15 F10000                          # Go to starting point: gfp 8/13/25 adj for MC added thickness
  G0 Z0.4                                               # Raise Z to 0.4
  G91                                                   # Incremental positioning 
  G1 X100 E20 F1000                                     # Primeline
  G90                                                   # Absolute position
  
[gcode_macro PRINT_END]
#   Use PRINT_END for the slicer ending script - please customise for your slicer of choice
gcode:
    # safe anti-stringing move coords
    {% set th = printer.toolhead %}
    {% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}
    {% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}
    {% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}
    
    SAVE_GCODE_STATE NAME=STATE_PRINT_END
    
    M400                           ; wait for buffer to clear
    G92 E0                         ; zero the extruder
    G1 E-5.0 F1800                 ; retract filament
    
    TURN_OFF_HEATERS
    
    G90                                      ; absolute positioning
    G0 X{x_safe} Y{y_safe} Z{z_safe} F20000  ; move nozzle to remove stringing
    ;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600  ; park nozzle at rear
    G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600  ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end
    G0 Z25 F3600  ; 08/09/25 gfp adj to raise extruder 25mm   
    M107                                     ; turn off fan
    
    BED_MESH_CLEAR
    RESTORE_GCODE_STATE NAME=STATE_PRINT_END


[gcode_macro CHOME]
description: Homes XYZ axis only if printer is in a non-homed state
gcode:
  {% if "xyz" not in printer.toolhead.homed_axes %}
    G28
  {% endif %}

[gcode_macro FRONT]
description: Moves the toolhead to the front
gcode:
  CHOME
  {% set x_center = printer.toolhead.axis_maximum.x|float / 2.0 %}
  {% set y_center = printer.toolhead.axis_maximum.y|float / 2.0 %}
  G90
  G1 X{x_center} Y10 F7800

[gcode_macro _LOGO_PENDING]
gcode:
  SET_LED LED=rgb_light RED=0.15 GREEN=0.5 BLUE=0.75 WHITE=0 INDEX=1

[gcode_macro _LOGO_READY]
gcode:
  SET_LED LED=rgb_light RED=0.99 GREEN=0.0 BLUE=0.0 WHITE=0 INDEX=1

[gcode_macro _LOGO_OFF]
gcode:
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=1
  

[gcode_macro _HEADLIGHT_ON]
gcode:
  SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=2 TRANSMIT=0
  SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=3


[gcode_macro _HEADLIGHT_OFF]
gcode:
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=2 TRANSMIT=0
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=3
  

[gcode_macro UNLOAD_FILAMENT]
description: Unloads filament from toolhead
gcode:
  {% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}
  {% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}
  {% set CURRENT_TARGET = printer.extruder.target|float %}
  CHOME
  G91                         ; relative positioning
  G1 Z20                      ; move nozzle upwards
  FRONT                       ; move the toolhead to the front
  {% if EXTRUDER_TEMP != 0 %}
    ;_LOGO_PENDING
    STATUS_HEATING ;06/07/25 gfp chg to something that works
    SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}" 
    {% if CURRENT_TARGET < EXTRUDER_TEMP %}
      M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot
    {% endif %}
    TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach
  {% endif %}
  ;_LOGO_READY
  STATUS_READY ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Starting unload" 
  M83                         ; set extruder to relative mode
  G1 E10 F300                 ; extrude a little to soften tip
  G1 E-8 F3600                ; quickly retract a small amount to elimate stringing
  G4 P200                     ; pause for a short amount of time
  G1 E-50 F400                ; retract slowly the rest of the way
  G1 E-20 F300
  M400                        ; wait for moves to finish
  M117 Unload Complete!
  ;_LOGO_OFF
  STATUS_OFF ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Unload Complete" 

[gcode_macro LOAD_FILAMENT]
description: Loads new filament into toolhead
gcode:
  {% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}
  {% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}
  {% set CURRENT_TARGET = printer.extruder.target|float %}
  FRONT                       ; move the toolhead to the front
  {% if EXTRUDER_TEMP != 0 %}
    ;_LOGO_PENDING
    STATUS_HEATING ;06/07/25 gfp chg to something that works
    SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}" 

    {% if CURRENT_TARGET < EXTRUDER_TEMP %}
      M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot
    {% endif %}
    TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach
  {% endif %}
  ;_LOGO_READY
  STATUS_READY ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Starting unload" 
;  _HEADLIGHT_ON
  M83                         ; set extruder to relative mode
  G1 E50 F300                 ; extrude slowlyL
  G1 E50 F300
  M400                        ; wait for moves to finish
  M117 Load Complete!
  ;_LOGO_OFF
  STATUS_OFF ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Unload Complete" 
  ;_HEADLIGHT_OFF


;<---------------------- 06/17/25 gfp another try at color change using Ellis' macros ---------------------->
[pause_resume]

[gcode_macro PAUSE]
rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                                  ; disable filament sensor 06/17/25 gfp commented out
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        BASE_PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro M600]
;rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                                  ; disable filament sensor 06/17/25 gfp commented out
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        ;BASE_PAUSE                                                                           ; pause print
        PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro RESUME]
rename_existing: BASE_RESUME
variable_zhop: 0
variable_etemp: 0
gcode:
    # Parameters
    {% set e = params.E|default(2.5)|int %}                                          ; hotend prime amount (in mm)

    {% if printer['pause_resume'].is_paused|int == 1 %}
        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                         ; disable filament sensor 06/17/25 gfp commented out
        #INITIAL_RGB                                                                 ; reset LCD color
        SET_IDLE_TIMEOUT TIMEOUT={printer.configfile.settings.idle_timeout.timeout}  ; set timeout back to configured value
        {% if etemp > 0 %}
            M109 S{etemp|int}                                                        ; wait for hotend to heat back up
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSEPARK MOVE=1 MOVE_SPEED=100                     ; go back to parked position in case toolhead was moved during pause (otherwise the return zhop can error)
        G91                                                                          ; relative positioning
        M83                                                                          ; relative extruder positioning
        {% if printer[printer.toolhead.extruder].temperature >= printer.configfile.settings.extruder.min_extrude_temp %}
            G1 Z{zhop * -1} E{e} F900                                                ; prime nozzle by E, lower Z back down
        {% else %}
            G1 Z{zhop * -1} F900                                                     ; lower Z back down without priming (just in case we are testing the macro with cold hotend)
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSE MOVE=1 MOVE_SPEED=60                          ; restore position
        BASE_RESUME                                                                  ; resume print
    {% endif %}

[gcode_macro TEST_SPEED]
# Home, get position, throw around toolhead, home again.
# If MCU stepper positions (first line in GET_POSITION) are greater than a full step different (your number of microsteps), then skipping occured.
# We only measure to a full step to accomodate for endstop variance.
# Example: TEST_SPEED SPEED=300 ACCEL=5000 ITERATIONS=10

description: Test for max speed and acceleration parameters for the printer. Procedure: Home -> ReadPositionFromMCU -> MovesToolhead@Vel&Accel -> Home -> ReadPositionfromMCU

gcode:
    # Speed
    {% set speed  = params.SPEED|default(printer.configfile.settings.printer.max_velocity)|int %}
    # Iterations
    {% set iterations = params.ITERATIONS|default(5)|int %}
    # Acceleration
    {% set accel  = params.ACCEL|default(printer.configfile.settings.printer.max_accel)|int %}
    # Minimum Cruise Ratio
    {% set min_cruise_ratio = params.MIN_CRUISE_RATIO|default(0.5)|float %}
    # Bounding inset for large pattern (helps prevent slamming the toolhead into the sides after small skips, and helps to account for machines with imperfectly set dimensions)
    {% set bound = params.BOUND|default(20)|int %}
    # Size for small pattern box
    {% set smallpatternsize = SMALLPATTERNSIZE|default(20)|int %}
    
    # Large pattern
        # Max positions, inset by BOUND
        {% set x_min = printer.toolhead.axis_minimum.x %}
        {% if x_min < 0 %}
            {% set x_min = 0 %}
        {% endif %}
    
        {% set y_min = printer.toolhead.axis_minimum.y %}
        {% if y_min < 0 %}
            {% set y_min = 0 %}
        {% endif %}
    
        {% set x_min = x_min + bound %}
        {% set x_max = printer.toolhead.axis_maximum.x - bound %}
        {% set y_min = y_min + bound %}
        {% set y_max = printer.toolhead.axis_maximum.y - bound %}
    
    # Small pattern at center
        # Find X/Y center point
        {% set x_center = (printer.toolhead.axis_minimum.x|float + printer.toolhead.axis_maximum.x|float ) / 2 %}
        {% set y_center = (printer.toolhead.axis_minimum.y|float + printer.toolhead.axis_maximum.y|float ) / 2 %}
        
        # Set small pattern box around center point
        {% set x_center_min = x_center - (smallpatternsize/2) %}
        {% set x_center_max = x_center + (smallpatternsize/2) %}
        {% set y_center_min = y_center - (smallpatternsize/2) %}
        {% set y_center_max = y_center + (smallpatternsize/2) %}

    # Save current gcode state (absolute/relative, etc)
    SAVE_GCODE_STATE NAME=TEST_SPEED
    
    # Output parameters to g-code terminal
    { action_respond_info("TEST_SPEED: starting %d iterations at speed %d, accel %d" % (iterations, speed, accel)) }
    
    # Home and get position for comparison later:
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28
        # QGL if not already QGLd (only if QGL section exists in config)
        {% if printer.configfile.settings.quad_gantry_level %}
            {% if printer.quad_gantry_level.applied == False %}
                QUAD_GANTRY_LEVEL
                G28 Z
            {% endif %}
        {% endif %} 
        # Move 50mm away from max position and home again (to help with hall effect endstop accuracy - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/24)
        G90
        G1 X{printer.toolhead.axis_maximum.x-50} Y{printer.toolhead.axis_maximum.y-50} F{30*60}
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28 X Y
        G0 X{printer.toolhead.axis_maximum.x-1} Y{printer.toolhead.axis_maximum.y-1} F{30*60}
        G4 P1000 
        GET_POSITION

    # Go to starting position
    G0 X{x_min} Y{y_min} Z{bound + 10} F{speed*60}

    # Set new limits
    {% if printer.configfile.settings.printer.minimum_cruise_ratio is defined %}
        SET_VELOCITY_LIMIT VELOCITY={speed} ACCEL={accel} MINIMUM_CRUISE_RATIO={min_cruise_ratio}
    {% else %}
        SET_VELOCITY_LIMIT VELOCITY={speed} ACCEL={accel} ACCEL_TO_DECEL={accel / 2}
    {% endif %}

    {% for i in range(iterations) %}
        # Large pattern diagonals
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_max} Y{y_max} F{speed*60}
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
        G0 X{x_min} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
        
        # Large pattern box
        G0 X{x_min} Y{y_min} F{speed*60}
        G0 X{x_min} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_max} F{speed*60}
        G0 X{x_max} Y{y_min} F{speed*60}
    
        # Small pattern diagonals
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_max} Y{y_center_max} F{speed*60}
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
        G0 X{x_center_min} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
        
        # Small pattern box
        G0 X{x_center_min} Y{y_center_min} F{speed*60}
        G0 X{x_center_min} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_max} F{speed*60}
        G0 X{x_center_max} Y{y_center_min} F{speed*60}
    {% endfor %}

    # Restore max speed/accel/accel_to_decel to their configured values
    {% if printer.configfile.settings.printer.minimum_cruise_ratio is defined %}
        SET_VELOCITY_LIMIT VELOCITY={printer.configfile.settings.printer.max_velocity} ACCEL={printer.configfile.settings.printer.max_accel} MINIMUM_CRUISE_RATIO={printer.configfile.settings.printer.minimum_cruise_ratio} 
    {% else %}
        SET_VELOCITY_LIMIT VELOCITY={printer.configfile.settings.printer.max_velocity} ACCEL={printer.configfile.settings.printer.max_accel} ACCEL_TO_DECEL={printer.configfile.settings.printer.max_accel_to_decel}
    {% endif %}

    # Re-home and get position again for comparison:
        M400 # Finish moves - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/66
        G28 # This is a full G28 to fix an issue with CoreXZ - https://github.com/AndrewEllis93/Print-Tuning-Guide/issues/12
        # Go to XY home positions (in case your homing override leaves it elsewhere)
        G90
        G0 X{printer.toolhead.axis_maximum.x-1} Y{printer.toolhead.axis_maximum.y-1} F{30*60}
        G4 P1000 
        GET_POSITION

    # Restore previous gcode state (absolute/relative, etc)
	
    RESTORE_GCODE_STATE NAME=TEST_SPEED

gfp #09/19/25 added dummy '[]'line for Notepad++ collapse/expand feature, and added 
# [gcode_macro _home], [bed_mesh] and [quad_gantry_level] macros per MissChanger directions.
[SESSION_VARIABLES]
####################################################################################
##                          Session Variables
####################################################################################
#;<    # Section Variable marker
#---------------------------------------------------------------
[include ./250918_Working_T0-StealthNhk-CW-Revo.cfg]
# [include ./T0-SB2209-Revo-LDO.cfg]
# [include ./T1-SB2209-Revo-LDO.cfg]
# [include ./T2-Nitehawk-Revo-G2E.cfg]
# [include ./T3-Nitehawk-Revo-LDO.cfg]
#---------------------------------------------------------------
#gfp 09/19/25 edited for 300x300 bed
[gcode_macro _home]
variable_xh: 150.0
variable_yh: 150.0 #this will need to change to 85 when dock is installed
# Dock is installed: True or False
variable_dock: False
gcode:
#---------------------------------------------------------------
#gfp 09/19/25 replaced with my 05/30/25 'stock' version
# [bed_mesh]
# speed: 200                   # Calibration speed
# horizontal_move_z: 10        # Z-axis movement speed
# mesh_min: 30,130             # Minimum calibration point coordinates x, y
# mesh_max: 320, 320           # Maximum calibration point coordinates x, y. 350mm=320,320
# probe_count: 11,11           # Number of sampling points (7X7 is 49 points)
# mesh_pps: 2,2                # Number of supplementary sampling points
# algorithm: bicubic           # algorithmic model
# bicubic_tension: 0.2         # Algorithmic interpolation don't move

#05/30/25 added gfp
[bed_mesh]
speed: 120
horizontal_move_z: 5
mesh_min: 30, 35 #07/05/25 gfp: 30 was not enough for Y
mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5
zero_reference_position: 150,150 #for use with stock z endstop. Added 06/01/25 gfp

#09/19/25 commented out - using version from my original printer.cfg
#---------------------------------------------------------------
# [quad_gantry_level]
# # Gantry Corners for 350mm Build
# gantry_corners:
	# -60,-10
	# 410,420
# # Probe points
# points:
	# 50,130
	# 50,300
	# 300,300
	# 300,130

# speed: 150                   # Levelling speed
# horizontal_move_z: 15        # Z-axis starting height
# retries: 10                  # Number of out-of-tolerance retries
# retry_tolerance: 0.0075      # Sampling tolerance
# max_adjust: 20               # Maximum adjustment stroke for levelling

#gfp 09/19/25 moved here per MissChanger setup instructions
[quad_gantry_level]

#--------------------------------------------------------------------   
##  Gantry Corners for 300mm Build
##  Uncomment for 300mm build
gantry_corners:
   -60,-10
   360,370
##  Probe points
points:
   50,25
   50,225
   250,225
   250,25

	
gfp #09/19/25 added dummy '[]'line for Notepad++ collapse/expand feature 
[SAVE_CONFIG] 


#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	  -0.028569, 0.045181, 0.051431, 0.016431, -0.047319
#*# 	  -0.013569, 0.017681, 0.015181, 0.010181, -0.034819
#*# 	  -0.006069, -0.001069, 0.000181, -0.004819, -0.011069
#*# 	  -0.067319, -0.023569, -0.001069, -0.017319, -0.041069
#*# 	  -0.006069, -0.023569, -0.037319, -0.044819, -0.078569
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 35.0
#*# max_y = 250.0
#*#
#*# [probe]
#*# z_offset = -1.680

As usual, I had to clear up a number of typos and other errors, but I finally wound up with what I hope is the ‘one remaining error’ – Option ‘pin’ is not valid in section ‘probe’. After stumbling around on this one for a while, I finally resorted to asking X/Grok, who came up with this answer:

Adjust the [probe] section: If you keep the multi-tool sections (e.g., if your Voron is modified for tool changing), remove the 'pin' option from [probe], as it's invalid there. The 'pin' should be defined in the [toolprobe_*] section for your Tap probe. For example:

[toolprobe_T0]
pin: ^your_sensor_pin_here  # e.g., ^toolhead:PB9 or whatever your Tap optical sensor is wired to
# Other Tap options like x_offset: 0, y_offset: 0, etc.

Adjust the [probe] section: If you keep the multi-tool sections (e.g., if your Voron is modified for tool changing), remove the 'pin' option from [probe], as it's invalid there. The 'pin' should be defined in the [toolprobe_*] section for your Tap probe. For example:

[toolprobe_T0]

pin: ^your_sensor_pin_here # e.g., ^toolhead:PB9 or whatever your Tap optical sensor is wired to

# Other Tap options like x_offset: 0, y_offset: 0, etc.

And that was the revelation: in multi-tool setups the ‘pin’ option is invalid in the (a?) [probe] section. Comparing the T3 sample configuration file to my ‘250918_Working_T0-StealthNhk-CW-Revo.cfg’, I see the following matching sections:

The MCU section
[adxl345] – c/o in the example file
[resonance_tester] – c/o in the example file
[temperature_sensor chamber] – remove this section and move the ATC Semitec 104NT-4-R025H42G info into the [extruder] section as shown in the example file.
[thermistor CMFB103F3950FANT] – Rename to [thermistor CMFB103F3950FANT0]
[temperature_sensor nh_temp] rename to [temperature_sensor T0] and change ‘CMFB103F3950FANT’ to ‘CMFB103F3950FANT0’ to match thermistor section name
[extruder3] – rename to just [extruder] for T0
[tmc2209 extruder] – name stays the same
[fan] rename to [fan_generic T0_partfan]
[heater_fan hotend_fan] rename to [heater_fan T0_hotend_fan]
[probe] – rename to [tool_probe T0], change number of retries from 5 to 10. Copy “tool:3” from ‘T3-Nitehawk-Revo-LDO.cfg’, and change ‘3’ to ‘0’.
[output_pin pcb_led] rename to [output_pin act_led0]

In addition to the above, I have to:

Copy the [verify_heater extruder3] section from ‘T3-Nitehawk-Revo-LDO.cfg’, and change ‘3’ to ‘0’.
Copy the [neopixel T3_hotend_rgb] section from ‘T3-Nitehawk-Revo-LDO.cfg’, and change ‘T3’ to ‘T0’. Also remove ‘[include stealthburner_leds.cfg]’
Copy [gcode_macro T3] from ‘T3-Nitehawk-Revo-LDO.cfg’, and change ‘T3’ to ‘T0’. Change ‘3’ ‘to ‘0’ within the body of the macro.
Copy [tool T3] from ‘T3-Nitehawk-Revo-LDO.cfg’. Change “tool_number: 3” to “tool_number: 0”, “extruder: extruder3” to “extruder: extruder”, “fan: T3_partfan” to “fan: T0_partfan”

20 September 2025 Update:

After making the above changes, I changed printer.cfg to include ‘250919_T0_Merged_With_T3-Nitehawk-Revo-LDO_Ex.cfg’, and transferred both it and 250919_T0_Merged_With_T3-Nitehawk-Revo-LDO_Ex.cfg to the raspberry, and rebooted.

After fixing a number of typos, I got the system to come up with no errors. However, when I tried to print my test model, I got an error message saying “Temperature too low to extrude”. This happened before, and I remember it being something that prevented (or skipped) PRINT_START from running. Then I noticed there was an error message “Cannot interact with probe – no active tool probe” underneath the image of the test print model, so I asked Grok about it, resulting in this:

The error “Cannot interact with probe – no active tool probe” in a Voron 2.4 setup with Tap and multiple toolheads typically indicates that Klipper cannot identify an active tool or its associated probe, often due to incomplete hardware setup or configuration issues in tool changer mods like TapChanger or StealthChanger.

These designs rely on OptoTap sensors (PCBs) installed on every toolhead for dual purposes: Z-axis probing (like standard Tap) and detecting which tool is currently active/mounted on the gantry.

Common Causes and Fixes: Missing or Incomplete OptoTap Sensors: Each toolhead must have its own OptoTap sensor wired correctly. Parked toolheads typically have their sensors in a “triggered” state (e.g., mechanically engaged in the dock), while the active tool’s sensor is “not triggered.” If any toolhead lacks a sensor, Klipper can’t reliably detect the active one, leading to the error. Solution: Install and wire OptoTap on all toolheads—shorting pins temporarily can act as a workaround for testing, but order proper sensors for a permanent fix.

This triggered (pun intended) an earlier memory; I had inadvertently left the printer on overnight and when I came into my office this morning, I noticed that the blue ‘triggered’ LED on the toolhead was illuminated. I thought nothing of it at the time, but Grok’s input led me to turn the printer off and manually move the gantry up a bit so the toolhead tap probe would not be triggered.

OK! This time the print actually started (or at least the head movement started). Then I got “Heater extruder not heating at expected rate
See the ‘verify_heater’ section in docs/Config_Reference.md
for the parameters that control this check.“

I had previously commented out the [verify heater extruder] section to get past a different error, so I uncommented the block and restarted the test print. So far, so good!

Nope – same error message: Looked some more and found that I had not included the [heater_bed] section in printer.cfg. Edited C:\Users\Frank\Documents\3D Projects\Voron Printer\MissChanger\Config Files\250919_With_MissChanger_Includes_and_SessionVariables_Section_printer.cfg to add this section and restarted. Starting another test print, and this time the status line shows: “Bed: 90c”, and the bed is definitely warming. However, when I looked at the actual heat_bed temperature reading, it stayed at 45c, indicating that the thermistor values weren’t being read by the mcu.

Then I had a similar issue with the extruder temps, so I may simply have the extruder and heat bed thermistor pin assignments swapped.

This may turn out to be a misconfiguration issue with the extruder hotend thermistor. There are actually 3 different places in the config that cite the same ATC Semitec 104NT-4-R025H42G thermistor

sensor_type: ATC Semitec 104NT-4-R025H42G in the [extruder] section
sensor_type: ATC Semitec 104NT-4-R025H42G in the [heater_bed] section
sensor_type: ATC Semitec 104NT-4-R025H42G in the [temperature_sensor chamber]

To eliminate any hardware issues, I swapped the toolhead back to my original one and changed printer.cfg back to ‘250830_OrigToolhead_printer.cfg’ to try to get back to a baseline.

Unfortunately Klipper came up with “unknown pin chip ‘nhk0’. I finally figured out that this was caused by me editing ‘stealthburner_leds.cfg’ for the second toolhead by changing ‘nhk’ to ‘nhk0’. I fixed this and (once I moved the chamber thermistor back from my second toolhead) I now have a working baseline, with all four temps shown – yay!

OK, now that I know the pin assignments in ‘250830_OrigToolhead_printer.cfg’ are correct, I can start comparing them to the later configs.

Comparing ‘250830_OrigToolhead_printer.cfg’ to ‘250830_SecondToolhead_printer.cfg’ I verified that they are identical in every way *except* for the nozzle diameter (0.4 on orig & 0.6 on second) and the unique USB ID. So, I should be able to swap in the second toolhead and its config and get it to come right up.

Yep – came up no problem, and successfully printed the test model.

So at this point we know that all the hardware works, and – more importantly – the nhk pin numbers in either printer.cfg correctly match the actual hardware. In particular the pin assignments for the three different ATC Semitec 104NT-4-R025H42G thermistors are:

In the [heater_bed] section it maps to ‘sensor pin: PA2’. It stays the same with all toolheads and is placed in printer.cfg.
in the [extruder] section the thermistor maps to’sensor_pin: nhk:gpio29′.
In the [temperature_sensor chamber] it maps to ‘sensor_pin: nhk:gpio28’.

Now back to the multi-toolhead ‘printer.cfg’ and my ‘T0 toolhead.cfg

comparing my original printer.cfg and 250919_With_MissChanger_Includes_and_SessionVariables_Section_printer.cfg, I see that in the [heater_bed] section they both map the thermistor to ‘sensor pin: PA2’. Good

Comparing the original printer.cfg to ‘250919_T0_Merged_With_T3-Nitehawk-Revo-LDO_Ex.cfg’:

[mcu nhk] becomes [mcu nhk0]
[extruder] sections are identical with the exception of the nozzle size and ‘nhk0’ vs ‘nhk’. In particular, they both point to the same pin nhk:gpio29 vs nhk0:gpio29. oops! duplicate ‘sensor_type’/’sensor_pin’ declaration to nhk0:gpio28 in the ‘T0—‘ file [extruder] section. Removed.
[temperature_sensor chamber] section in the ‘T0—‘ file was commented out – uncommented and verified it is pointed to nhk0:gpio28

OK, loading ‘250919_T0_Merged_With_T3-Nitehawk-Revo-LDO_Ex.cfg’ and ‘250919_With_MissChanger_Includes_and_SessionVariables_Section_printer.cfg’. This should work with the ‘T0’ toolhead already mounted in the printer.

It looks like everything is working with the T0 (gray) toolhead, *except*:

None of the ‘STATUS_xxx’ commands work
Still can’t save baby steps after a print

23 September 2025 Update:

Well, today I got everything working, including all the STATUS_xxx RGB LED macros, and I can now print and save the z-offset (‘baby steps’) from the ‘fine tune’ facility. All the code corrections are in 250922_printer.cfg, 250922_T0-Nitehawk-Revo-LDO_Ex.cfg and 250922_T0_stealthburner_leds.cfg (the only change in 250922_T0_stealthburner_leds.cfg is this line: pin: nhk0:gpio7 – it has to match the ‘T-ness’ of the associated toolhead. So there will be a T1_stealthburner_leds.cfg and it will point to ‘nhk1:gpio7).

I was basking in the glow of completion when I when I noticed that the next step, which was to run SAVE_CONFIG_MODE to create the needed ‘config_no_dock.cfg’ and ‘config_wt_dock.cfg’ files (which are in the wrong directory, but this doesn’t seem to hurt anything, so…). With a *lot* of help from Vin I got this done, only to find out I couldn’t proceed because my printer refused to recover from a FIRMWARE_RESTART call (which I believe has to happen on every tool change). Fortunately, I was able to troubleshoot this problem by replacing the toolhead I was using (the one I built from a kit from KB3D) with the one I built with the original LDO kit. Eventually by changing things in and out I was able to determine that the NiteHawk PCB on the ‘new’ toolhead was defective and wouldn’t reliably connect to raspberry pi via USB.

After figuring that out I created a support ticket on KB3D and it is now working its way through the system (KB3D responded very quickly, but ultimately the decision for replacement has to come from LDO, which means China. Hopefully that will work out OK.

In the meantime, I should be able to continue by using the ‘old’ toolhead, which is working fine.

24 September 2025 Update:

To summarize where I am at the moment. I have a complete working set of hardware, consisting of:

My original Stealthburner with Nitehawk USB PCB
A working printer-specific configuration file (250922_printer.cfg)
A working toolhead-specific configuration (250922_T0-Nitehawk-Revo-LDO_Ex.cfg)
250922_T0_stealthburner_leds.cfg – included in 250922_T0-Nitehawk-Revo-LDO_Ex.cfg to handle toolhead RGB LED ‘STATUS_xxx’ color combinations

I ran a test print with the original toolhead, and it worked fine except for the starting z-offset. I used ‘fine tune’ to adjust this during the print, then cancelled the print, saved the offset, and reprinted the part. I had wondered if Klipper would offer to save the offset for a cancelled print, and now I know the answer is ‘Yes’.

The next print went the other way a bit in terms of z-offset, so I know the adjustment ‘took’. I adjusted it down a bit, cancelled, saved the offset, and started another print.

The next one overshot the mark again, toward too small an offset. I began to wonder if the fact that my current toolhead uses a 0.4mm nozzle, but the config was for a 0.6mm nozzle. I changed that and started another print.

In the next print, I used fine tune to adjust the offset down (toward the bed) by 0.250. This time I was smart enough to check the current configuration file offset *before* applying the offset. I saved printer.cfg & T0xxx.cfg to ‘Downloads’, then I applied the offset and started another print.

Comparing printer.cfg files, I see:

#*#
#*# [tool_probe_endstop]
#*# z_offset = -1.414

#*#

#*# [tool_probe_endstop]

#*# z_offset = -1.414

was added to the bottom of the SAVE_CONFIG section. I guess I won’t really know about offset adjustments until after the upcoming print.

OK, this time the adjustment was +0.450 (away from the bed), and now the #*# z_offset is -1.614, a change of -0.200; no idea why this works this way.

Started yet another print. This time the adjustment was -0.550 (toward the bed), and now the #*# z_offset is -2.164, a change of -0.550; at least that makes sense mathematically.

Another run, this time the adjustment was +0.250 (away from bed), and now the #*# z_offset is -1.314, a change of +0.850 – over 3x the offset I *thought* I was applying. WTF? I posted this data to the Voron discord in the ‘Klipper help’ channel, but haven’t seen anything remotely helpful so far.

25 September 2025 Update:

So, today I started over – again. I replaced the printer.cfg file with my 250830_OrigToolhead_printer.cfg file and did a Z-calibrate to get reasonably close to a printing starting point. Before the calibrate, the z_offset was about -1.6. After the Z-calibrate, I see

#*# [probe]
#*# z_offset = -0.530

1 2	## [probe] ## z_offset = -0.530

The print didn’t start. I got a ‘too many retries’ error (on the QGL I think). Nothing in Klippy.log though. Tried again and this time the print started OK. Used fine-tune and raised the nozzle +0.700. Stopped the print, saved the offset, and now I see:

#*# [probe]
#*# z_offset = -1.230

1 2	## [probe] ## z_offset = -1.230

Which makes sense (-0.530 – 0.70 = -1.230).

Did another manual Z-probe calibration. After the calibration finished, I see:

#*# [probe]
#*# z_offset = -1.830

1 2	## [probe] ## z_offset = -1.830

Did another manual Z-probe and this time the ‘before’ and ‘after’ numbers were very close (0.02mm). After completion, I see

#*# [probe]
#*# z_offset = -1.850

1 2	## [probe] ## z_offset = -1.850

So the Z probe cal is working properly.

Tried another print. This one started out with *almost* perfect offset. I dropped it down just a bit. After the reboot, I see:

#*# [probe]
#*# z_offset = -1.800

1 2	## [probe] ## z_offset = -1.800

So, just 0.05mm toward the bed, resulting in a slightly smaller negative offset.

So, at this point it looks like the original toolhead with the original printer.cfg is working properly. Did another print, and this one looks great.

All this time, none of the ‘STATUS_xxx’ LED colors were visible, even though it looks like the proper stealthburner_led.cfg file has been included. Hmm, I screwed around a bit with stealthburner_led.cfg, and now all of a sudden the LEDs are working again! Magic!

Reseated the neopixel cable connector to the NiteHawk PCB and things seem to be working for the moment.

So the situation at the moment is: I have my original toolhead and original printer.cfg working, and the Z-prob cal & fine tuning process seems to work, and produces believable, consistent offset values. The next step is to replace printer.cfg with my MissChanger versions 250922_printer.cfg, 250922_T0-Nitehawk-Revo-LDO_Ex.cfg and 250922_T0_stealthburner_leds.cfg

OK, changed back to the ‘MissChanger’ set of config files, and ran the Z-probe calibrate routine. At the start of the procedure I see:

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -0.563750

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [tool_probe T0]

#*# z_offset = -0.563750

At the end of the calibration process I see a Z: 0.530, very close (assuming sign match) to the current value. After accepting the above value and restarting, I see:

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -0.563750
#*#
#*# [extruder]
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	-0.028569, 0.045181, 0.051431, 0.016431, -0.047319
#*# 	-0.013569, 0.017681, 0.015181, 0.010181, -0.034819
#*# 	-0.006069, -0.001069, 0.000181, -0.004819, -0.011069
#*# 	-0.067319, -0.023569, -0.001069, -0.017319, -0.041069
#*# 	-0.006069, -0.023569, -0.037319, -0.044819, -0.078569
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 35.0
#*# max_y = 250.0
#*#
#*# [tool_probe_endstop]
#*# z_offset = -1.870

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [tool_probe T0]

#*# z_offset = -0.563750

#*#

#*# [extruder]

#*#

#*# [bed_mesh default]

#*# version = 1

#*# points =

#*# -0.028569, 0.045181, 0.051431, 0.016431, -0.047319

#*# -0.013569, 0.017681, 0.015181, 0.010181, -0.034819

#*# -0.006069, -0.001069, 0.000181, -0.004819, -0.011069

#*# -0.067319, -0.023569, -0.001069, -0.017319, -0.041069

#*# -0.006069, -0.023569, -0.037319, -0.044819, -0.078569

#*# x_count = 5

#*# y_count = 5

#*# mesh_x_pps = 2

#*# mesh_y_pps = 2

#*# algo = lagrange

#*# tension = 0.2

#*# min_x = 30.0

#*# max_x = 275.0

#*# min_y = 35.0

#*# max_y = 250.0

#*#

#*# [tool_probe_endstop]

#*# z_offset = -1.870

Note that the above is quite a bit different than what I saw in the ‘original’ config setup. Now there are *two* values of interest – the [tool_probe T0] value of -0.5673, and the [tool_probe_endstop] value of -1.870, neither of which are the value I got from the calibration (although the too_probe T0 value is pretty close).

Tried a test print: (Side note: neopixel LEDs are all OFF and don’t respond to a STATUS_PRINT command

After the print started I did a live-adjust to +0.400. When the print finished, I saved the offset, and looked at printer.cfg to see:

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -2.270000
#*#
....
#*#
#*# [tool_probe_endstop]
#*# z_offset = -0.964

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [tool_probe T0]

#*# z_offset = -2.270000

#*#

....

#*#

#*# [tool_probe_endstop]

#*# z_offset = -0.964

Frank

Looking at the post-Z-cal values I see that [tool_probe T0] was -0.563750 and is now -2.270. [tool_probe_endstop] z_offset was -1.870 and is now -0.964. Neither of these values make any sense to me.

Did another print, and this one started out with too little squish. I adjusted down by 0.1 and that seemed to work. Saved the offset, and now [tool_probe T0] changed from -2.270 to -0.864.

Did another print, and this time I had to go up 0.400 again! After cancelling the print, I accepted the adjustment and looked at printer.cfg. This time [tool_probe T0] changed from -0.864 to -2.570.

26 September Update:

I got a note from Vin that he had found and fixed a bug that might (or might not) have caused the above offset-related problems. So, I’m back to running the same series of experiments as before the update.

First print: I forgot to do the probe calibration beforehand, so who knows where the nozzle will be :(. I would start over, except that the printer takes sooooo loooong to heat up. The nozzle was *way* off the bed, and it took a fine-tune adjustment of -1.050mm to get it back down to where it was printing at least somewhat normally. Cancelled the print and saved the offset adjustment. Before applying the adjustment, the offset in printer.cfg were:

Before applying offset adjustments:

#*# [tool_probe T0]
#*# z_offset = -2.570000
...
#*# [tool_probe_endstop]
#*# z_offset = -1.264

After offset application

#*# [tool_probe T0]
#*# z_offset = -0.214000
...
#*# [tool_probe_endstop]
#*# z_offset = -1.520

Before applying offset adjustments:

#*# [tool_probe T0]

#*# z_offset = -2.570000

...

#*# [tool_probe_endstop]

#*# z_offset = -1.264

After offset application

#*# [tool_probe T0]

#*# z_offset = -0.214000

...

#*# [tool_probe_endstop]

#*# z_offset = -1.520

From the before and after values, it looks like the tool_probe z_offset value went from -2.57 to -1.264, a change of +1.306 (closer to the bed). The tool_probe_endstop value changed from -1.264 to -1.520, a change of -0.256 (farther from the bed). So the net affect (if this story can be believed, is a change of +(1.306-0.256) = +1.05 (closer to the bed, I think). This value (1.050) is exactly what was entered during fine-tuning. This, of course, begs the question of why this amount was allocated between these two values in such a way.

Second print. This time I had to adjust 1.35mm away from the bed in order to get a good first layer. The ‘after’ probe values are shown below:

#*# [tool_probe T0]
#*# z_offset = -2.870000
...
#*# [tool_probe_endstop]
#*# z_offset = -1.564

#*# [tool_probe T0]

#*# z_offset = -2.870000

...

#*# [tool_probe_endstop]

#*# z_offset = -1.564

From the before and after values, it looks like the tool_probe z_offset value went from -0.214 to -2.87, a change of -2.56 (farther from the bed). The tool_probe_endstop value changed from -1.520 to -1.564, a change of -0.36 (farther from the bed). So the net affect is a change of -(2.56+0.36) = -2.92 (farther from the bed). This value (2.92) is more than twice the entered adjustment value of -1.35mm.

This time I set the extruder temp to 150 and then did a PROBE_CALIBRATE from the Voron front panel, using a piece of paper with a measured thickness of 0.9mm. With the paper dragging just a bit, the required offset was -1.13. Before accepting the result, the printer.cfg values were:

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -2.870000
#*#
#*# [extruder]
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	0.015912, 0.072162, 0.088412, 0.059662, -0.020338
#*# 	0.019662, 0.025912, 0.029662, 0.029662, -0.010338
#*# 	0.025912, 0.008412, 0.004662, -0.005338, -0.009088
#*# 	0.045912, 0.004662, -0.034088, -0.006588, 0.042162
#*# 	0.072162, 0.010912, -0.036588, 0.062162, -0.012838
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 35.0
#*# max_y = 250.0
#*#
#*# [tool_probe_endstop]
#*# z_offset = -1.840

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [tool_probe T0]

#*# z_offset = -2.870000

#*#

#*# [extruder]

#*#

#*# [bed_mesh default]

#*# version = 1

#*# points =

#*# 0.015912, 0.072162, 0.088412, 0.059662, -0.020338

#*# 0.019662, 0.025912, 0.029662, 0.029662, -0.010338

#*# 0.025912, 0.008412, 0.004662, -0.005338, -0.009088

#*# 0.045912, 0.004662, -0.034088, -0.006588, 0.042162

#*# 0.072162, 0.010912, -0.036588, 0.062162, -0.012838

#*# x_count = 5

#*# y_count = 5

#*# mesh_x_pps = 2

#*# mesh_y_pps = 2

#*# algo = lagrange

#*# tension = 0.2

#*# min_x = 30.0

#*# max_x = 275.0

#*# min_y = 35.0

#*# max_y = 250.0

#*#

#*# [tool_probe_endstop]

#*# z_offset = -1.840

After accepting the offset value, the probe values are:

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [tool_probe T0]
#*# z_offset = -2.870000
#*#
#*# [extruder]
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	0.015912, 0.072162, 0.088412, 0.059662, -0.020338
#*# 	0.019662, 0.025912, 0.029662, 0.029662, -0.010338
#*# 	0.025912, 0.008412, 0.004662, -0.005338, -0.009088
#*# 	0.045912, 0.004662, -0.034088, -0.006588, 0.042162
#*# 	0.072162, 0.010912, -0.036588, 0.062162, -0.012838
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 275.0
#*# min_y = 35.0
#*# max_y = 250.0
#*#
#*# [tool_probe_endstop]
#*# z_offset = -1.744

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [tool_probe T0]

#*# z_offset = -2.870000

#*#

#*# [extruder]

#*#

#*# [bed_mesh default]

#*# version = 1

#*# points =

#*# 0.015912, 0.072162, 0.088412, 0.059662, -0.020338

#*# 0.019662, 0.025912, 0.029662, 0.029662, -0.010338

#*# 0.025912, 0.008412, 0.004662, -0.005338, -0.009088

#*# 0.045912, 0.004662, -0.034088, -0.006588, 0.042162

#*# 0.072162, 0.010912, -0.036588, 0.062162, -0.012838

#*# x_count = 5

#*# y_count = 5

#*# mesh_x_pps = 2

#*# mesh_y_pps = 2

#*# algo = lagrange

#*# tension = 0.2

#*# min_x = 30.0

#*# max_x = 275.0

#*# min_y = 35.0

#*# max_y = 250.0

#*#

#*# [tool_probe_endstop]

#*# z_offset = -1.744

As a result of PROBE_CALIBRATE, the [too_probe T0] value was not changed, but the [tool_probe_endstop] value was changed from -1.564 to -1.840, i.e 0.236mm farther away from the bed.

I did another Z-CALIBRATE and this time the [tool_probe_endstop] value changed from -1.840 to -1.744, about 0.096 closer to the bed.

A third calibration resulting in -1.185, and the [tool_probe_endstop] value stayed constant at -1.744.

Did two test prints. For the first one I had to lower the nozzle over 1mm to get a decent print, and on the second on I had to raise the nozzle by over 1mm to get a good print. This is not acceptable. I think I’m going back to my single-toolhead configuration until this can get sorted out. A second factor in all this is it seems my neopixel LEDs aren’t dependable in the multi-tool configuration, and I don’t remember them being this way.

Went back to my single-toolhead configuration. Did a Z_CALIBRATE, and the new offset was very close to the ‘saved’ offset.

Started a test print. It printed perfectly the first time – no ‘fine-tuning’ required. However, the toolhead LEDs are still OFF – so this may well be a hardware issue on the toolhead.

I loosened the top two screws on the stealthburner, and now the LEDs are alive again. Maybe a pinched wire? I removed the front half of the stealthburner, and I could see where the ground (black) wire leading from the lower LEDs to the upper set could have been pinched by the front half when the screws where tightened. I moved this wire out of the line of fire, and now everything seems to be going OK.

28 September 2025 Update:

I’ve been fighting a couple of hardware problems with my stealthburners. The Nitehawk PCB on my second (“new”) toolhead has become intermittent, so I’m corresponding with LDO via the KB-3D discord, trying to get me to send me a new PCB. In addition, the neopixel LEDs on my original stealthburner have become intermittent, to the point where I ordered a new neopixel assembly from Amazon. I was able to replace the defective NH PCB on the ‘new’ toolhead with the one from the original one, thereby giving me one toolhead with both LEDs and PCB working.

I got info back from Vin that I’m ‘almost there’, but I apparently missed a vital step in setting up the z_offset, step 4.3 as shown below:

4.3. Calibrate offsets
4.3.1. Calibrate reference z-offset
Mount tool-head T0

Go to T0 config file. Make sure:

z_offset under [tool_probe T0] is commented out

Every other offsets to 0; i.e. x_offset and y_offset

Save it, BUT DON'T RESTART

Run G28 and QUAD_GANTRY_LEVEL

Run PROBE_CALIBRATE on the console and go through the process with the normal paper test.

Run SAVE_CONFIG - which will restart your printer

Go to printer.cfg

Copy the z-offset value from:

#*# [tool_probe_endstop]
#*# z_offset = {value}
And, paste it to:

#*# [tool_probe T0]
#*# z_offset = {value}
Delete:

#*# [tool_probe_endstop]
#*# z_offset = {value}
Note: It will not be used regardless of whether it is there or not.

Save & Restart

Note: It is key that you get the z_offset correct for the T0, as it will be used to extrapolate other offsets later on. Therefore, it is worth diverging from these instruction if you have a preferred way to set your the z-offset.

4.3. Calibrate offsets

4.3.1. Calibrate reference z-offset

Mount tool-head T0

Go to T0 config file. Make sure:

z_offset under [tool_probe T0] is commented out

Every other offsets to 0; i.e. x_offset and y_offset

Save it, BUT DON'T RESTART

Run G28 and QUAD_GANTRY_LEVEL

Run PROBE_CALIBRATE on the console and go through the process with the normal paper test.

Run SAVE_CONFIG - which will restart your printer

Go to printer.cfg

Copy the z-offset value from:

#*# [tool_probe_endstop]

#*# z_offset = {value}

And, paste it to:

#*# [tool_probe T0]

#*# z_offset = {value}

Delete:

#*# [tool_probe_endstop]

#*# z_offset = {value}

Note: It will not be used regardless of whether it is there or not.

Save & Restart

Note: It is key that you get the z_offset correct for the T0, as it will be used to extrapolate other offsets later on. Therefore, it is worth diverging from these instruction if you have a preferred way to set your the z-offset.

I changed back from my single toolhead configuration to the MissChanger T0 configuration (250922_T0-Nitehawk-Revo-LDO_Ex.cfg, 250922_T0_printer.cfg and 250922_T0_stealthburner_leds.cfg. Because I switched NH PCBs, these .cfg files probably reference the wrong USB serial port ID, so I’ll have to fix that before moving on.

25 October 2025 Update:

I now have a two-tool config set (printer.cfg, T0 & T1 toolhead configs) working – at least as far as the config files go. I can start up with both toolheads connected, but as soon as I try to do anything that requires a tool switch, I get a bunch of errors:

Gantry is not LEVELED…
Printer is not HOMED…
Calibration Probe is not in place…
No tool selected (“A” / “a” / “0” / “1” / etc.)
Cannot select tool, toolchanger status is uninitialized

I finally worked my way through all the errors, and got to the point where I had T1 mounted in its cradle, and found that the proper X value for it is 246 – with the Y value the same as for T0. I ran TEST_DOCKING and was stunned to see the printer try to dock and undock T0 instead of T1!

After clearing up some more errors, I was planning to try that trick again but discovered that Klipper now didn’t recognize *either* toolhead and refused to respond to any movement commands. Even power cycling the printer didn’t solve the problem. Eventually barring any other ideas, I decided to manually mount T0 onto the carriage, and “lo and behold!” everything started working again. This makes NO SENSE to me, as I can’t see how the printer (klipper) can tell if a toolhead is actually mounted on the carriage. It’s a mystery.

Hallelujah! I got the printer to do a toolchange from T0 to T1 and then from T1 back to T0! See the short video below:

Reading some more through Vin’s ReadMe, I came across this note in the “‘Tool-change Tuning” section:

The speed and path of the default tool-change routine in misschanger_settings.cfg is tuned for reliability. It is slower and has more steps than needed. For a smooth running MissChanger. The params_path_speed can be increased and some of the “Wiggle wiggle”, in the path, can be disabled.

So I looked into misschanger_settings.cfg and saw this:

params_sb_misschanger_path: [{'x':0,       'y':0,      'f':1.00,    'd':1},
                             {'x':0,       'y':-55,    'f':0.80,    'd':1},
                             {'x':0,       'y':-65,    'f':0.75,    'd':0},    # Wiggle...
                             {'x':0,       'y':-60,    'f':0.70,    'd':0},    # Wiggle...
                             {'x':0,       'y':-70,    'f':0.70,    'd':1},
                             {'x':0,       'y':-62,    'f':0.45,    'd':0},    # Wiggle...
                             {'x':0,       'y':-67,    'f':0.45,    'd':0},    # Wiggle...
                             {'x':0,       'y':-65,    'f':0.45,    'd':0},    # Wiggle...
                             {'x':0,       'y':-75,    'f':0.45,    'd':0},    # Wiggle...
                             {'x':0,       'y':-70,    'f':0.40,    'd':0},
                             {'x':0,       'y':-80,    'f':0.30,    'd':1},
                             {'x':0,       'y':-80.50, 'f':0.80,    'd':0},    # Wiggle...
                             {'x':0,       'y':-79.50, 'f':0.80,    'd':0},    # Wiggle...
                             {'x':0,       'y':-80,    'f':0.30,    'd':0},    # Wiggle...
                             {'x':+0.50,   'y':-80,    'f':0.80,    'd':0},    # Wiggle...
                             {'x':-0.50,   'y':-80,    'f':0.80,    'd':0},    # Wiggle...
                             {'x':0,       'y':-80,    'f':0.30,    'd':0},    # Wiggle...
                             {'x':0,       'y':-80.50, 'f':0.80,    'd':0},    # Wiggle...
                             {'x':0,       'y':-79.50, 'f':0.80,    'd':0},    # Wiggle...
                             {'x':0,       'y':-80,    'f':0.30,    'd':0},    # Wiggle...
                             {'x':-5.50,   'y':-80,    'f':0.20,    'd':1},  
                             {'x':-5.50,   'y':-70,    'f':0.30,    'd':1},
                             {'x':-5.50,   'y':-40,    'f':1.00,    'd':1}]

params_sb_misschanger_path: [{'x':0, 'y':0, 'f':1.00, 'd':1},

{'x':0, 'y':-55, 'f':0.80, 'd':1},

{'x':0, 'y':-65, 'f':0.75, 'd':0}, # Wiggle...

{'x':0, 'y':-60, 'f':0.70, 'd':0}, # Wiggle...

{'x':0, 'y':-70, 'f':0.70, 'd':1},

{'x':0, 'y':-62, 'f':0.45, 'd':0}, # Wiggle...

{'x':0, 'y':-67, 'f':0.45, 'd':0}, # Wiggle...

{'x':0, 'y':-65, 'f':0.45, 'd':0}, # Wiggle...

{'x':0, 'y':-75, 'f':0.45, 'd':0}, # Wiggle...

{'x':0, 'y':-70, 'f':0.40, 'd':0},

{'x':0, 'y':-80, 'f':0.30, 'd':1},

{'x':0, 'y':-80.50, 'f':0.80, 'd':0}, # Wiggle...

{'x':0, 'y':-79.50, 'f':0.80, 'd':0}, # Wiggle...

{'x':0, 'y':-80, 'f':0.30, 'd':0}, # Wiggle...

{'x':+0.50, 'y':-80, 'f':0.80, 'd':0}, # Wiggle...

{'x':-0.50, 'y':-80, 'f':0.80, 'd':0}, # Wiggle...

{'x':0, 'y':-80, 'f':0.30, 'd':0}, # Wiggle...

{'x':0, 'y':-80.50, 'f':0.80, 'd':0}, # Wiggle...

{'x':0, 'y':-79.50, 'f':0.80, 'd':0}, # Wiggle...

{'x':0, 'y':-80, 'f':0.30, 'd':0}, # Wiggle...

{'x':-5.50, 'y':-80, 'f':0.20, 'd':1},

{'x':-5.50, 'y':-70, 'f':0.30, 'd':1},

{'x':-5.50, 'y':-40, 'f':1.00, 'd':1}]

So it looks like there is plenty of “wriggle room” (pun intended). I modified this by removing several lines of ‘wriggle’s and restarted the printer. Then I did a toolchange and noted that the tool un-dock motion was a bit less frantic. I’ll let this ride for a while now and see how it goes.

26 October 2025 Update:

After getting the toolchange operation working, I have been trying to work my way through the the MissChanger Klipper_Config ReadMe instructions. It’s a bit confusing, as “Step 2: Set up printer.cfg” also incorporates a number of ‘Steps’ whose numbering duplicates the step numbers in other sections. After getting T0 working with the dock assembly and making some test prints, I started working on “Step 6: Make the next tool-head and its config file”. I created a config file for T1 and [include]’ed it in the session variables section of printer.cfg. Then I copy/pasted the ‘[tool_probe T0]’ & ‘[extruder]’ sections to ‘[tool_probe T1]’ & ‘[extruder1]’ in the ‘SAVE_CONFIG’ section of printer.cfg.

27 October 2025 Update:

I was running around in circles yesterday, trying to use the MissChanger calibration probe to get both toolheads zeroed in, and failing miserably. So today I decided to go back to basics on Tool 0.

I temporarily removed the docking module, as I discovered yesterday that the active toolhead brushes the inactive toolhead during quad gantry levelling operations. This isn’t bad enough to do any damage, but it definitely needs fixing.

After HOME_ALL & QGL, I did a PROBE_CALIBRATE to find the zero offset for T0. This value came in at -1.830 – significantly different than the -2.000 I had been using up til now. Not sure what caused this. Note that the new offset value appeared in the original

#*# [tool_probe_endstop]
#*# z_offset = -1.830

1 2	## [tool_probe_endstop] ## z_offset = -1.830

section at the very bottom of the SAVE_CONFIG section. This section isn’t used by MissChanger, so per the ReadMe I copy/pasted that value to

#*# [tool_probe T0]
#*# z_offset = -1.830

1 2	## [tool_probe T0] ## z_offset = -1.830

Then I made a test print, and it came out perfectly, with no fine tuning required – Yay!

Now I have a working baseline again – so I can go forward. The first thing I want to do though is fix the problem with the active toolhead brushing the inactive toolhead when doing a QGL. I re-attached the docking module and remounted the inactive toolhead in the left-most dock. Then I used manual position control to move the active toolhead back and forth on the X axis past the inactive toolhead, for decreasing values of Y.

OK, this turned out to be a false alarm. The toolheads only brush if the inactive toolhead is in the ‘release’ position (still in the dock, but not in the parked position). When the inactive toolhead is in the parked position, there is plenty of room – yay!

Then I did a HOME_ALL & QGL with the red toolhead in the fully docked position to verify the clearance – worked great!

Then I manually (using the MainSail control panel) switched from T0 to T1, and redid the PROBE_CALIBRATE operation. This time though, I copied this value:

#*# [tool_probe_endstop]
#*# z_offset = -1.620

1 2	## [tool_probe_endstop] ## z_offset = -1.620

to ‘tool_probe T1’ instead of ‘tool_probe T0’.

#*# [tool_probe T1]
#*# z_offset = -1.620

1 2	## [tool_probe T1] ## z_offset = -1.620

After a brief side-trip down the LOAD/UNLOAD_FILAMENT rabbit-hole (see the 28 October Update in this post) Then I tried the same test print as before.

Building a Voron 2.4 300 Dual Extruder 3D Printer

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Posted 2 May, 2025

I’ve been a 3D printing hobbyist for over a decade now, starting with the ‘Printrbot Simple Metal’ printer from Printrbot (no longer in business), and working my way up through multiple Prusa (MK3S+ and MK4, with a Core One upgrade coming soon), and two different FlashForge dual-extruder printers.

I tried the FlashForge printers because I wanted to be able to do complex objects that require dissolvable filaments. This experiment ended with me giving one FlashForge to The Ohio State University, and (after yet again failing to make dissolvable filament printing work) throwing the other one in the trash some six months ago. The real problem with the FlashForge printers was the closed-source firmware, which wouldn’t do what I needed it to do, and wasn’t ever updated from the original. I actually tried ‘Klipperizing’ the FlashForge, but wound up bricking the motherboard instead – leading to the afformentioned trip to the trash bin.

Since then, I have been searching through the i-verse, looking for multi-material options that make sense. There are a LOT of multi-material printers out there, but almost all of them feature a single extruder with some sort of filament multiplexing system to achieve multi-material printing. Unfortunately, when one of the materials is a dissolvable filament type, this system breaks down rather badly. One is forced to accept weaker prints due to dissolvable filament leakage into the body of the part, or excessive waste and printing time due to the requirement to fully purge the dissolvable filament material from the extruder path before switching to the base material filament

Another option is a ‘tool changer’ 3D printer, where each material has a dedicated extruder that is connected to the positioning system as required, and ‘docked’ out of the way at other times. Prusa has their ‘XL’ tool changer printer, but it is indeed ‘Xtra Large’, won’t fit into my available lab workspace and also very expensive. However, I recently learned that there are well-supported tool changer mods for the very popular Voron printer – a printer so popular that I’d never heard of before!

The reason the Voron printer never crossed my mental horizon before is that the Voron printer isn’t actually a printer per-se – it is a printer design, not an actual printer.

The backstory, curtesy of X/Grok:

The Voron 3D printer project began in 2015, initiated by Maksim (Maks) Zolin, an Apple engineer with a passion for tinkering. Zolin aimed to create a high-performance, open-source 3D printer that was quiet, clean, aesthetically pleasing, and capable of reliable 24/7 operation without constant maintenance—a “no-compromise” home micro-manufacturing machine that didn’t carry the high price tag of industrial alternatives. Inspired by the open-source RepRap movement but seeking to surpass the limitations of existing consumer-grade printers, Zolin spent over a year designing, redesigning, stress-testing, and optimizing every component in his garage.

The project started as a personal challenge, partly driven by Zolin’s desire to build a better alternative to the Ultimaker 2 without spending thousands, especially as he and his wife were expecting their first child. Initially, he incorporated MZBOT to manufacture and sell kits, hand-assembling parts like harnesses and beds in his garage. The first Voron printer, V1, was released in 2016, shortly after his daughter’s birth, and 18 kits were shipped with serial numbers. However, Zolin decided against running a traditional 3D printer company, as the economic climate was tough for such ventures and he didn’t want to shift his life toward managing a startup. Instead, he open-sourced the designs, shut down MZBOT, and formed Voron Design, inviting collaboration from a growing community.

This community-driven approach transformed Voron into a collective of passionate engineers and hobbyists, now a small, tight-knit group of engineers united by a shared ethos of creating production-quality printers that can be assembled at home. The project’s emphasis on user-friendly documentation, influenced by Zolin’s Apple background, and its active community support via platforms like Discord and GitHub, set it apart from other open-source projects. Voron printers, built on CoreXY or CoreXZ kinematics for speed and precision, evolved into models like the Voron 0, 2.4, Trident, Switchwire, and Legacy, each catering to different needs while maintaining modularity and high performance. The community continues to drive innovation, sharing upgrades and mods, making Voron a standout in the 3D printing world for its blend of accessibility, quality, and customization.

There is nowhere one can go to buy a Voron – there are kits (like the ones from LDO Systems and Formbot), rich documentation, and even full BOM (Bill Of Materials) if you want to self-source all the parts, but nobody sells completely assembled Voron printers (well, there are individuals who have built Voron printers themselves who will sell them to you, but they are few and far between, and the size and weight of a fully assembled Voron printer makes shipment prohibitively expensive).

This was all completely new to me, and it has taken some time to digest all the different terminology and seemingly endless options available in the Voron ecosystem. Central to my education about all things Voron is the Voron discord channel. One caution in reading through this and other Voron-related channels is the terminology. For instance, in most other 3D printers, the terms ‘hotend’ and ‘extruder’ are mostly synonymous. However, in the Voron world, they aren’t. Now the ‘hotend’ may (and I may not even have this right) refer to just the ‘hot’ portions of a ‘tool’ (or ‘toolhead’), and ‘extruder’ refers to just the part of the tool that actually delivers filament to the printing bed. Also, the various tools and options in the Voron world have names that may or may not mean anything. Again from X/Grok:

1. Printer Models

Voron offers several distinct printer models, each with specific design characteristics and intended use cases:

Voron 0 (V0): A compact CoreXY printer with a 120x120x120mm build volume, ideal for small, fast prototyping. Current release is V0.2r1.
Voron 1 (V1): A versatile printer with a 250x250x250mm build volume, featuring a magnetic bed and enclosed chamber.
Voron 2 (V2): The flagship model with a large build volume (up to 350x350x350mm), advanced features like quad gantry leveling, and a belt-driven Z-axis. Current release is V2.4.
Voron Trident: A traditional CoreXY design with a fixed gantry and moving bed, available in 250x250mm, 300x300mm, or 350x350mm bed sizes. Simpler to build than V2, costing $1,000–$1,300.
Voron Switchwire: A CoreXZ design, similar to an upgraded Prusa i3, with linear bearings and a faster belt-driven Z-axis.
Voron Legacy: An older model, less common but still supported, designed for specific use cases.

2. Extruder Options

Voron printers support a range of extruders, each optimized for different setups (Bowden or direct-drive) and printer models:

Mobius: The original Bowden extruder, frame-mounted, highly optimized with dual gears. Driven by a full-size or compact “pancake” NEMA17 motor.
Jetpack: A modified Mobius mounted on the X-axis for a shorter Bowden tube. Superseded by the M4 extruder, driven by a compact NEMA17 motor.
Clockwork (CW1): The original extruder for the Afterburner toolhead, a repackaged BMG dual-gear extruder driven by a compact NEMA17 motor.
Clockwork 2 (CW2): An updated version of Clockwork, commonly paired with the Stealthburner toolhead.
Nightwatch: A repackaged Clockwork 2 designed for the smaller Voron 0, available as a standalone Bowden extruder.
Galileo: A newer extruder for the Afterburner toolhead, based on the Orbiter extruder with a planetary gear reduction for a smaller, lighter design.
Galileo 2 (G2): A redesigned Galileo with a 9:1 gear ratio, optimized gearbox, and custom 9T stepper motor. Includes variants like G2E (Stealthburner drop-in), G2Z (Z-drives for V2-style printers), and G2SA (standalone with Orbiter-2.0 or Sherpa-Mini mounts).
Pocketwatch: A compact Bowden extruder for the Voron 0, based on the Afterburner Clockwork design.
Bondtech LGX: A premade extruder compatible with the Afterburner toolhead, offering a warranty and high performance.

3. Toolhead Systems

Toolheads in Voron printers are modular, allowing for interchangeable components:

Afterburner: A direct-drive interchangeable toolhead system with three components: extruder, hotend holder, and cooling assembly. Often mistakenly used to refer to the Clockwork extruder.
Stealthburner: An updated toolhead, standard for newer builds, offering high performance and compatibility with extruders like Clockwork 2 and Galileo.
Mini Stealthburner: A compact toolhead with a built-in direct-drive extruder, designed for the Voron 0.2.
M4: A direct-drive toolhead that superseded the Jetpack, designed for shorter Bowden setups.

4. Hotend Options

Voron printers support multiple hotends, with STL files provided for compatibility:

E3D V6: A standard hotend option, limited to 12–15 mm³/s extrusion rate.
Dragon: A high-performance hotend supported by Voron’s STL files.
SliceEngineering Mosquito: A high-flow hotend capable of higher extrusion rates, especially with the Magnum heatbreak (up to 30 mm³/s).
E3D Volcano: Not recommended for Voron 0 due to reduced Z-height, but compatible with other models.

5. Bed Leveling Sensors

Voron printers offer options for bed leveling to ensure accurate prints:

Inductive Probe: A traditional sensor for bed leveling, used in stock configurations.
CNC TAP: An upgraded leveling sensor for improved accuracy, recommended for Voron 2.4 and other models.

6. Motion Systems

Voron printers use specific motion systems for precision and speed:

CoreXY: Used in Voron 0, Voron 1, Voron 2, and Trident for fast and accurate printing with reduced moving mass.
CoreXZ: Used in the Switchwire, combining X and Z motion for a design similar to an upgraded Prusa i3.

7. Frame Extrusions

The frame construction varies by model:

1515 Makerbeam XL: Used in Voron 0, with tapped ends for cost efficiency.
2020 Aluminum Extrusions: Used in Voron 1, Voron 2, and Legacy with a 6mm slot width.
3030 and 6030 Extrusions: Used in the Switchwire for a robust frame.

8. Linear Rails

Voron printers use linear rails for smooth motion:

MGN7: Used in Voron 0 for all axes.
MGN9: Used in Voron 1, Voron 2, and Trident for X and Y axes. V-slot extrusions are discouraged due to misalignment risks.
MGN12: Used in some Voron 2.4 configurations for the X-axis (e.g., PRO+ version).

9. Firmware and Interfaces

Voron printers run on Klipper firmware with multiple web interface options:

Mainsail: A lightweight web interface for Klipper, recommended for all Voron printers.
Fluidd: Similar to Mainsail with a different look and feel, also Klipper-specific.
Octoprint: A general-use platform with plugin support, less recommended due to higher resource demands.

10. Multicolor Printing Options

For multicolor printing, Voron users can choose from several systems:

Tridex: A dual-extruder system for two-color printing without large purge blocks.
Double Dragon: Another dual-extruder option for two colors.
Dueling Zero: A dual-extruder system for Voron 0.
TapChanger: A tool-changing system for multiple colors or materials.
ERCF (Enraged Rabbit Carrot Feeder): A multi-material system for more colors, with options to purge into models to reduce waste.
IDEX (Independent Dual Extruder): Allows printing with different materials for supports or colors, planned for some custom builds.

11. Other Optional Components

Display/Screen: Optional, as many builders use the web interface (Mainsail or Fluidd) for control.
Filament Sensor: Used in some configurations to detect filament presence (e.g., toolhead_sensor in Klipper configs).
Moons’ Motors: Upgraded stepper motors included in some kits (e.g., Voron 2.4 PRO+).
Omron Relay: An upgraded relay for improved electrical reliability in some kits.
PEI Sheet: Double-sided PEI build plate for better adhesion, included in some kits.
Pre-Made Wiring Harness: Simplifies assembly in kits like the Voron 2.4 PRO+.

This list covers the primary option names associated with Voron printers. If you need details on a specific model, component, or configuration process, let me know!

In my particular case, I am primarily interested in dual-extruder designs, with robust open-source firmware, automatic bed-levelling (FlashForge’s lack of auto bed level and the impossibility of updating the firmware was ultimately the thing that drove me to throw that piece of junk away), VERY active user community and rich upgrade paths.

After exhaustive research (not necessarily in terms of the actual information retained, but certainly in terms of eye-strain and headache!), I narrowed my focus down as follows:

General System Configuration: I decided on a Voron 2.4 300mmx300mm configuration (my current Prusa Mk4 has a ~200mmx200mm print volume). In addition, the external dimensions of this configuration will actually fit quite nicely on my wrap-around lab workbench underneath my overhead cabinets and shelving units (this may not be entirely true of the planned dual extrusion toolchanger configuration, but I’ll cross that bridge when I come to it).

Toolhead/Extruder: I want to wind up with a dual-extruder system, which means a ‘toolchanger’ configuration. However, the community recommends that first-time builders build a completely normal (at least in the Voron world) printer, get it working to spec and only then start modifying it into a toolchanger configuration like StealthBurner/StealthChanger/TapChanger. I was told that the LDO kit I ordered comes with StealthBurner/StealthChanger supported parts, so I may not have to discard too much when upgrading to dual extrusion.

After all the research, I ordered a LDO Systems Voron 2.4 300mm Rev D kit from West3D. This is a significantly more expensive kit than the also-popular Formbot kit, but I’m more interested in top quality rather than economy.

I’m currently waiting on the printer kit to arrive so I can start my Voron adventure.

6 May 2025 Update:

In preparation for my kit build I read through a number of Voron build logs and other posts on the Voron discord server and watched a number of build videos. One thing that stood out was the importance of a really flat build surface as a way of getting the frame square at the outset. I had a nice piece of granite left over from our house construction 20 years ago, but it was a little small for this project. So, I got a 1x24x26″ remnant from a local granite supplier to use as a build surface. At my wife’s suggestion, I put the granite piece on a fold-out card table in the middle of my lab so I could work all the way around the printer if necessary. Just as I got that done, the printer kit arrived, so I’m all set to start my Voron adventure 😁

10 May 2025 Update:

Well, a lot of progress has been made in the last four days. I’m fully into construction mode now, and everything else (including food, sleep, and personal hygiene) is an unwelcome distraction (well, bridge and b-ball practice are exceptions). Here are some progress photos:

Nicely packaged and ready for the adventure

So far, the build project has been relatively disaster-free. I have managed to install some roll-in nuts into wrong section of extrusion and managed to get all but one of them back out again. The remaining one, I fear will remain as a permanent testimony to the builder’s humanity (as in – “to err is human”).

11 May 2025 Update:

Miracle of miracles! I got that rogue roll-in nut out of the extrusion! Turned out to be pretty easy using the technique shown in this video. I thought that particular roll-in nut was going to be there forever!

After getting past that roadblock, I continued to make progress. Here’s a photo showing the mostly completed gantry assembly.

15 May 2025 Update:

This is my quote from five days ago: “So far, the build project has been relatively disaster-free.” This is my quote from three days ago: “Holy Shit! My gantry assembly (see photo above in my 11 May 2025 Update) just dis-assembled itself onto the floor!” So, I guess the Voron printer god giveth, and the Voron printer god taketh away. I had everything on the gantry done, even to the point of test fitting it into the printer frame, where I found a couple of minor problems. So, I pulled the gantry back out and had it on my work surface to fix them, and when I rotated the gantry assembly around to get to the problem, the whole damned thing just fell apart! In the process, two of the carriages came off their linear rails and scattered little teensy-tiny ball bearings all over my floor. And, as the Voron assembly manual says (or words to that effect) “you ain’t recovering from that dude!”.

This was entirely my fault. After assembling the gantry pieces consisting of three frame pieces in a ‘U’ shape and a fourth frame piece (the Toolhead carriage that moves in X & Y axes) that slides back and forth along the ‘U’, I noticed that the distance between the open end of the ‘U’ changed as I manually slid the the moving piece back and forth. This is a BAD THING, so I fixed it by loosening the screws that clamp the side extrusions to the bottom extrusion and then slid the moving piece up and down again. This motion sort of self-adjusted the extrusions in the clamps, and everything was parallel again (a GOOD THING). Unfortunately, I forgot to tighten the clamping screws again, which led some time later to my gantry assembly dis-assembling itself in mid air. 😖

So, after seriously considering ritual suicide, I went up on the West3D discord and got the part number for the offending linear rails and ordered two new ones – putting another $100 or so dent in my bank balance, and a week or so delay in getting the frame and gantry finished UGH! UGH! UGH!

After a restless night filled with nightmares about flying gantries dis-assembling in mid air, I got up the next day and decided to skip ahead to the Electronics assembly section of the manual. At least I have some claim to expertise in that area. After a couple of days, I have made some pretty good progress in the Electronics bay, as shown below:

A Word about West3D:

When I decided to try my hand at building a Voron 3D printer from an LDO (the high-priced spread of Voron kits) kit, I naturally looked around for a distributor and got recommendations that West3D was a good company, so I bought my kit from them. Little did I know that what I also got for my money was A whole lot of support. As I encountered problems (and boy did I encounter problems), the staff at West3D was almost always just a few minutes away on their Discord channel. Here’s a sampling of a conversation I had just today about finishing up the Electronics sub-assembly (In the conversation below, I am ‘av8tor’ and the West3D support guy is ‘thunderkeys’):

11:06 AM]av8tor: yes, lots. I did find a packet containing 1ea M5x6 BHCS, and this worked great. Is this particular screw used somewhere else in the printer? I did a search in the assembly manual for ‘M5x6’ (after testing that ‘M5x10’ worked properly) and found 0 hits.

[11:06 AM]thunderkeys: That’s what it’s for

[11:06 AM]av8tor: cool!

[11:06 AM]av8tor: you are up early!

[11:06 AM]thunderkeys: I’m in Colorado today

[11:07 AM]av8tor: ah, 1 time zone diff from Oregon

[11:07 AM]av8tor: You see the photo & question about the RPi heatsink?

[11:09 AM]thunderkeys: I answered that first

[11:09 AM]thunderkeys: ⁠ticket-0123⁠

[11:10 AM]av8tor: oops – sorry

[11:31 AM]av8tor: Some progress 1

[11:50 AM]thunderkeys: I’d also look at a PE wire on the SSR

[11:50 AM]thunderkeys: secured with like an m4x6 bhcs1

[11:58 AM]av8tor: OK, nothing shown in the ‘final’ wiring guide image – is this something that has been found to be an issue – like SSR switching noise suppression? I could fabricate a wire with a ring terminal on one end and a swaged pin (like the provided PE wires). Connect the ring terminal end to one of the M4x6 screws securing the SSR to the Relay Mount (Assy Man pg 157), and the other end to the PE Wago. Would that work?

[11:59 AM]thunderkeys:

[11:59 AM]MistaExcuse_West3D: That would be PERFECT! It’s exactly what I did.

After this conversation I was able to add the ‘PE’ (grounding wire) from the SSR (Solid State Relay used to control the temperature of the heated bed) to the main grounding WAGO junction strip, and now – with just a few exceptions – I have completed the below-decks electrical wiring for my Voron 3D printer

Electrical bay showing the ‘PE’ (grounding) wire added to the Solid-state relay (SSR)

If you are considering your own Voron project, I highly recommend West3D. I didn’t know it at the time, but I literally could not have done this project without their (and by ‘their’ I mean #thunderkeys) constant help and encouragement.

17 May 2025 Update:

I’m pretty much finished with the electronics bay work, and because my new linear rails haven’t yet arrived, I decided to continue on other things – and the ‘other thing’ I started on was the StealthBurner toolhead that comes stock with the LDO kit. And since I had never heard of ‘Voron’ before, much less ‘StealthBurner’, I was pretty sure this was going to be a bit of a wild ride (and it was). However, like the rest of the Voron ecosytem there is a very detailed StealthBurner assembly manual, giving me hope that I just might be able to muddle through. Here’s the ‘after’ picture shown at the top of the StealthBurner assembly manual:

After working my way through to the end of the manual where the decorative cover is installed, as shown in this illustration:

Where I discovered that the long screws would not thread into the mating heatset threaded holes at all. I had encountered something similar to this in earlier parts of this process, and I had figured out that the problem was due to not having the heatset inserts square to the hole, such that the centerline through the heatset threads were perpendicular to the plane of the part (in those earlier instances I was able to fix the problem by reheating the insert with my modified soldering iron tip and reorienting it when the material became plastic). Sure enough, when I actually looked at the four heatset inserts used for this step, they were way out of square:

The two holes for the M3x50 mounting screws were the worst, but the heatset inserts for the M3x25 mounting screws were off far enough to keep the screws from engaging the threads.

So, what to do. With earlier similar issues I had simply reinserted my modified soldering tip into the heatset insert with the temp dialed up a bit and reoriented the insert ‘by eyeball’. However these were for much shorter screws, so significant misalignment was still OK. For these longer screws I would need a different technique.

What I wound up doing was to thread a M3x16 screw into the heatset insert just enough to engage all the threads, and then using the screw as an extension of my soldering iron. When sufficient heat made its way down the screw and into the insert, the surrounding material became plastic again and then the screw could be manipulated with the soldering iron tip to reorient the insert properly. With some experimentation I found that I needed to set the soldering iron temperature to about 250 degrees when using a M3x8 screw, and about 450 degrees when using a M3x16 screw (presumably due to the higher heat loss through the longer screw) the insert had a tendency to ‘bounce back’ to its previous orientation as the plastic resolidified, so I had to go past the correct orientation to allow for this. Then I discovered that I could remove the iron from the screw head and then use something like one of my hex-head socket drivers to hold the screw in place while the plastic resolidified and this worked pretty well. After reorienting all for inserts I was able to successfully mount the StealthBurner cover to the assembly as shown:

Heres another photo showing the completed StealthBurner with the NiteHawk toolhead PCB installed.

At this point I’m pretty amazed the richness of the Voron ecosystem and the vitality of the Voron community. These folks are seriously competent and innovative – and something I didn’t really expect – artistically creative. When you look at the StealthBurner toolhead photos above, there is a sort of ‘steampunk science-fiction’ motif with all the angular flat surfaces. Somebody (or maybe lots of somebody’s) went to a lot of trouble to include these aspects into the design of a 3D printer extruder assembly (‘toolhead’ in Voron-speak). I’m not used to seeing this sort of artistic flair on 3D printers. For instance, here is a photo of my Prusa MK4 extruder:

There is very little that is ‘artistic’ about this extruder assembly – maybe ‘brutally simple’ would be a better description 😉

Another thing that I didn’t really understand about this project is just how vast of an undertaking it was going to be. I have already assembled at three different 3D printers from kits, and I don’t recall them being anywhere near as complex and, well, massive as this one. I feel like I might still be building this thing sometime next year, even working 30+ hours/week on just this project. Hopefully I’ll like the end product 😀

04 June 2025 Update:

A lot has happened since my last update three weeks ago. The printer is actually functional now, albeit without any side/bottom panels or any other ‘niceties. Notable milestones along the way from there to here:

Linear Rail disaster recovery:

I received my replacement linear rails, only to discover that I had ordered the wrong ones; I had managed to order the ones for a 250x250mm Voron instead of my 300x300mm one. After some wailing and gnashing of teeth, I figured out how to transplant the carriers (with their millions of teensy tiny ball-bearings) from the new linear rails to the old ones. I mounted both the new and old rails onto the same extrusion with the ends touching as shown below:

Then I very carefully slid the carrier off the new linear rail onto the old one (right to left in the photo above). This actually turned out to be fairly easy, although it took a bit of a leap of faith to push through resistance as the internal ball-bearings bridged the gap. This saved me yet another embarrassing re-order from West3D.

I finally got the gantry re-assembled with the old linear rails and the new rail carriers

and then installed onto the printer frame

So then I started installing the Gates gear-tooth belts. The Z-belts were relatively straightforward, but the A/B motor belts were much more complicated. Due to the X/Y core movement dynamics, both the A and B motor belts have to move to produce a the desired toolhead trajectory. If only one motor belt moves, the head moves on a diagonal. For a pure X or pure Y movement, both A and B motor belts have to move in a coordinated fashion. I did not understand this at all when I started out, and didn’t understand why the ‘A’ and ‘B’ motors were called ‘A’ and ‘B’ instead of ‘X’ and ‘Y’, so this took some research into ‘Core X/Y kinematics’ and some head-scratching. All this is prefatory to understanding why the assembly instructions make such a big deal out of making sure that both the ‘A’ and ‘B’ belts wind up with exactly the same amount left over after they are run through the system. Here’s what I wound up with.

Definitely not ‘exactly the same length’.

After some back and forth with the experts on the Voron forum and providing photos showing the routing for both belts, I was informed that I was guilty of ‘doing the thing’. I had seen this reference to ‘the thing’ a number of times on discord postings, but had no idea what it was up to this point. Turns out ‘the thing’ involves misrouting the belt over a part of the A or B (or both I guess) motor mount instead of through a slot and around an idler.

After correcting this error, the belt remainders were the same length, as shown below:

After this I installed all the ‘skirt’ pieces.

At this point I decided to start working my way toward my desired ‘Stealthchanger’ (dual Stealthburner toolhead) configuration by not installing the XY drag chain from the fixed frame out to the toolhead, and instead routing the ‘umbilical’ cable directly from the electronics bay to the toolhead. When I get around to installing a second Stealthburner toolhead, this independent umbilical routing will be required.

At this point I had a ‘mostly functional’ Voron printer, albeit with no side, top or bottom panels, and lots of left-over hardware.

After a few more hiccups with belt routing:

I was able to get the Z endstop switch installed, and actually get the printer to ‘home’

Next was to get the BTT (Big Tree Tech) touch-sensitive display to actually display the control panel instead of just console text. This turned out to require the installation of a Klipper extension called ‘KlipperScreen’ – another piece of the puzzle I’d never heard of before. With help from the Voron discord and X/Grok, I got this installed and got the display working properly. This turned out to be important, as this allowed me to access the ‘fine tuning’ tool to get the first layer dialed in.

Then I had to work my way through another set of problems getting a first layer print to work, and among other things this involved understanding the role of the ‘Z position_endstop’ value in determining the actual distance from the nozzle to the print bed for the first layer. It turns out there was a lot of misunderstanding on the Voron discord about this parameter and how best to adjust it to the optimum value for a good first layer. After fumbling around for a good while trying to adjust ‘Z position_endstop’, I discovered that the ‘fine tune’ tool on the BTT display offers to adjust the ‘Z position_endstop’ to incorporate the ending ‘fine tune’ value, operating under the assumption that the operator used the ‘fine tune’ feature to achieve a good first layer – nice! With that, I was able to get a very nice first layer, as shown below:

And then, for my first ‘official’ printed part, I of course chose the ‘Voron Cube’:

So, at this point I have a functioning printer, but there is lots to do yet. All the panels, the Nevermore filter, change out the Omron sensor for a ‘Klippy Stepper’ (parts included in the LDO kit), and ultimately get to the desired dual-Stealthburner configuration.

17 June 2025 Update:

A lot has changed since the last update. The Voron 2.4 printer has been completely finished, and I even got a serial number (a big deal in the Voron community). Now I’m working on ‘enhancing the user experience’. Here’s a photo showing the finished printer:

Once I got the printer mostly finished and inside its enclosure, I tried some ABS prints, and immediately ran into some issues. It turns out that there is an ‘IF’ statement in the PRINT_START macro that treats commanded heatbed temps over 90C (the default heatbed temp for ABS is 100C) a bit differently, and this held me up for a bit. With some hints from the Voron discord community, I figured out what was wrong and fixed it, and then ABS prints went very nicely.

Then I decided to try a two-color ABS print – my Voron serial number in red on a black background. Prusa Slicer offers to put in a ‘M600’ (filament change) at the appropriate level so the user can manually change the filament color and resume the print. Unfortunately, the Klipper firmware doesn’t recognize the M600 command, so my first few tries at this just resulted in monochrome (all black) results. After much more study and cries for help on Discord, I finally got a two-color print going – sorta:

When I once again cried for help on the Voron Discord, I was pointed in the general direction of “Ellis’ Pause/Resume Macros”. This led me down yet another rabbit-hole, from which I have yet to emerge.

Two-color prints using Voron/Klipper and Prusa Slicer:

Prusa Slicer offers to insert a ‘M600’ (filament change) g-code command into the g-code at the appropriate layer whenever it detects a ‘logo-like’ object being sliced. However, Klipper does not natively recognize M600 g-code commands.

My first attempt at enabling two-color printing was to add the following macro (suggested by Grok) into Klipper’s printer.cfg:

;<---------------------- 06/16/25 gfp first try at color change macro ---------------------->
[pause_resume]

[gcode_macro M600]
gcode:
    {% set X = params.X|default(50)|float %}
    {% set Y = params.Y|default(0)|float %}
    {% set Z = params.Z|default(10)|float %}
    SAVE_GCODE_STATE NAME=M600_state
    PAUSE
    G91
    G1 E-0.8 F2700 ; Retract filament slightly
    G1 Z{Z} ; Raise Z by specified amount
    G90
    G1 X{X} Y{Y} F3000 ; Move to parking position
    G91
    G1 E-50 F1000 ; Retract filament further (adjust for your extruder)
    RESTORE_GCODE_STATE NAME=M600_state

;<---------------------- 06/16/25 gfp first try at color change macro ---------------------->

[pause_resume]

[gcode_macro M600]

gcode:

{% set X = params.X|default(50)|float %}

{% set Y = params.Y|default(0)|float %}

{% set Z = params.Z|default(10)|float %}

SAVE_GCODE_STATE NAME=M600_state

PAUSE

G91

G1 E-0.8 F2700 ; Retract filament slightly

G1 Z{Z} ; Raise Z by specified amount

G90

G1 X{X} Y{Y} F3000 ; Move to parking position

G91

G1 E-50 F1000 ; Retract filament further (adjust for your extruder)

RESTORE_GCODE_STATE NAME=M600_state

As I understand it, the ‘[pause_resume]’ section is required before any pause/resume macro operations to enable the underlying Klipper firmware routines.

The ‘[gcode_macro M600]’ macro executes whenever a M600 command is detected in the print gcode file. This macro was sufficient to pause the print, allowing me to change the filament. When I clicked on ‘Resume’ on the KlipperScreen, the print restarted, but unfortunately at a slightly offset position. So, ‘close but no cigar’.

Looking at the above macro, I *thought* the ‘SAVE_GCODE_STATE NAME=M600_state’ and ‘RESTORE_GCODE_STATE NAME=M600_state’ calls would do the job of returning the extruder to the original position, but apparently this magic is not entirely foolproof.

So, on to Ellis’ Print Tuning Guide, which contains advanced PRINT_PAUSE and PRINT_RESUME macros with some explanations, one of which is germane to my situation:

“It’s probably okay to leave the hotend on during a non-runout filament change (M600) if you plan to be near your printer. If you want to do that, you can duplicate the macro to M600 (rather than just having M600 as an alias for pause) and comment that part out.”

I take the above comment to mean that I can overwrite the contents of the above [gcode_macro M600] macro with the contents of Ellis’ [gcode_macro PAUSE] macro (and then, presumably add Ellis’ [gcode_macro RESUME] macro as-is. On further thought, it sounds like the word ‘duplicate’ is meaningful – meaning that I should use Ellis’ [gcode_macro PAUSE] macro and have the [gcode_macro M600] with all the [gcode_macro PAUSE] code, in addition to Ellis’ [gcode_macro PAUSE] macro, like so:

[gcode_macro PAUSE]
rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0 ;06/17/25 gfp c/o                                 ; disable filament sensor
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        BASE_PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro M600]
;rename_existing: BASE_PAUSE ;not needed here
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0 ;06/17/25 gfp c/o                                 ; disable filament sensor
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        ;BASE_PAUSE ;06/17/25 gfp c/o
        PAUSE ;06/17/25 gfp: call the default Klipper PAUSE macro                                                                   ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro RESUME]
rename_existing: BASE_RESUME
variable_zhop: 0
variable_etemp: 0
gcode:
    # Parameters
    {% set e = params.E|default(2.5)|int %}                                          ; hotend prime amount (in mm)

    {% if printer['pause_resume'].is_paused|int == 1 %}
        SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=1                          ; enable filament sensor
        #INITIAL_RGB                                                                    ; reset LCD color
        SET_IDLE_TIMEOUT TIMEOUT={printer.configfile.settings.idle_timeout.timeout}  ; set timeout back to configured value
        {% if etemp > 0 %}
            M109 S{etemp|int}                                                        ; wait for hotend to heat back up
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSEPARK MOVE=1 MOVE_SPEED=100                     ; go back to parked position in case toolhead was moved during pause (otherwise the return zhop can error)
        G91                                                                          ; relative positioning
        M83                                                                          ; relative extruder positioning
        {% if printer[printer.toolhead.extruder].temperature >= printer.configfile.settings.extruder.min_extrude_temp %}
            G1 Z{zhop * -1} E{e} F900                                                ; prime nozzle by E, lower Z back down
        {% else %}
            G1 Z{zhop * -1} F900                                                     ; lower Z back down without priming (just in case we are testing the macro with cold hotend)
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSE MOVE=1 MOVE_SPEED=60                          ; restore position
        BASE_RESUME                                                                  ; resume print
    {% endif %}

[gcode_macro PAUSE]

rename_existing: BASE_PAUSE

gcode:

# Parameters

{% set z = params.Z|default(10)|int %} ; z hop amount

{% if printer['pause_resume'].is_paused|int == 0 %}

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z} ; set z hop variable for reference in resume macro

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target} ; set hotend temp variable for reference in resume macro

;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0 ;06/17/25 gfp c/o ; disable filament sensor

SAVE_GCODE_STATE NAME=PAUSE ; save current print position for resume

BASE_PAUSE ; pause print

{% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %} ; check that zhop doesn't exceed z max

G91 ; relative positioning

G1 Z{z} F900 ; raise Z up by z hop amount

{% else %}

{ action_respond_info("Pause zhop exceeds maximum Z height.") } ; if z max is exceeded, show message and set zhop value for resume to 0

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0

{% endif %}

G90 ; absolute positioning

G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000 ; park toolhead at front center

SAVE_GCODE_STATE NAME=PAUSEPARK ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)

M104 S0 ; turn off hotend

SET_IDLE_TIMEOUT TIMEOUT=43200 ; set timeout to 12 hours

{% endif %}

[gcode_macro M600]

;rename_existing: BASE_PAUSE ;not needed here

gcode:

# Parameters

{% set z = params.Z|default(10)|int %} ; z hop amount

{% if printer['pause_resume'].is_paused|int == 0 %}

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z} ; set z hop variable for reference in resume macro

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target} ; set hotend temp variable for reference in resume macro

;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0 ;06/17/25 gfp c/o ; disable filament sensor

SAVE_GCODE_STATE NAME=PAUSE ; save current print position for resume

;BASE_PAUSE ;06/17/25 gfp c/o

PAUSE ;06/17/25 gfp: call the default Klipper PAUSE macro ; pause print

{% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %} ; check that zhop doesn't exceed z max

G91 ; relative positioning

G1 Z{z} F900 ; raise Z up by z hop amount

{% else %}

{ action_respond_info("Pause zhop exceeds maximum Z height.") } ; if z max is exceeded, show message and set zhop value for resume to 0

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0

{% endif %}

G90 ; absolute positioning

G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000 ; park toolhead at front center

SAVE_GCODE_STATE NAME=PAUSEPARK ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)

M104 S0 ; turn off hotend

SET_IDLE_TIMEOUT TIMEOUT=43200 ; set timeout to 12 hours

{% endif %}

[gcode_macro RESUME]

rename_existing: BASE_RESUME

variable_zhop: 0

variable_etemp: 0

gcode:

# Parameters

{% set e = params.E|default(2.5)|int %} ; hotend prime amount (in mm)

{% if printer['pause_resume'].is_paused|int == 1 %}

SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=1 ; enable filament sensor

#INITIAL_RGB ; reset LCD color

SET_IDLE_TIMEOUT TIMEOUT={printer.configfile.settings.idle_timeout.timeout} ; set timeout back to configured value

{% if etemp > 0 %}

M109 S{etemp|int} ; wait for hotend to heat back up

{% endif %}

RESTORE_GCODE_STATE NAME=PAUSEPARK MOVE=1 MOVE_SPEED=100 ; go back to parked position in case toolhead was moved during pause (otherwise the return zhop can error)

G91 ; relative positioning

M83 ; relative extruder positioning

{% if printer[printer.toolhead.extruder].temperature >= printer.configfile.settings.extruder.min_extrude_temp %}

G1 Z{zhop * -1} E{e} F900 ; prime nozzle by E, lower Z back down

{% else %}

G1 Z{zhop * -1} F900 ; lower Z back down without priming (just in case we are testing the macro with cold hotend)

{% endif %}

RESTORE_GCODE_STATE NAME=PAUSE MOVE=1 MOVE_SPEED=60 ; restore position

BASE_RESUME ; resume print

{% endif %}

After making the above changes, the printer.cfg file looks like this:

# This file contains common pin mappings for the LDO Voron 2.4 Rev. D kit
# See docs/Config_Reference.md for a description of parameters.

## Voron Design VORON 2.4 250/300/350mm Leviathan V1.1 + Nitehawk-SB config

## *** THINGS TO CHANGE/CHECK: ***
## MCU paths                            [mcu] section
## Thermistor types                     [extruder] and [heater_bed] sections - See https://www.klipper3d.org/Config_Reference.html#common-thermistors for common thermistor types
## Z Endstop Switch location            [safe_z_home] section
## Homing end position                  [gcode_macro G32] section
## Z Endstop Switch  offset for Z0      [stepper_z] section
## Probe points                         [quad_gantry_level] section
## Min & Max gantry corner postions     [quad_gantry_level] section
## PID tune                             [extruder] and [heater_bed] sections
## Probe pin                            [probe] section
## Fine tune E steps                    [extruder] section

[include mainsail.cfg]
[include stealthburner_leds.cfg]

[mcu]
##  Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify
##--------------------------------------------------------------------
serial: /dev/serial/by-id/usb-Klipper_stm32h743xx_2A001E000A51333038383535-if00
restart_method: command
##--------------------------------------------------------------------

[mcu nhk]
##  Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify
##--------------------------------------------------------------------
serial: /dev/serial/by-id/usb-Klipper_rp2040_4E363334324B5803-if00
restart_method: command
##--------------------------------------------------------------------

[printer]
kinematics: corexy
max_velocity: 300  
max_accel: 10000
max_z_velocity: 15          #Max 15 for 12V TMC Drivers, can increase for 24V
max_z_accel: 350
square_corner_velocity: 5.0

#####################################################################
#   X/Y Stepper Settings
#####################################################################

##  B Stepper - Left
##  Connected to HV STEPPER 0
##  Endstop connected to X-ENDSTOP
[stepper_x]
step_pin: PB10
dir_pin: !PB11
enable_pin: !PG0
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC1
position_min: 0
##--------------------------------------------------------------------

##  Uncomment below for 250mm build
#position_endstop: 250
#position_max: 250

##  Uncomment for 300mm build
position_endstop: 300
position_max: 300

##  Uncomment for 350mm build
#position_endstop: 350
#position_max: 350

##--------------------------------------------------------------------
homing_speed: 25   #Max 100
homing_retract_dist: 5
homing_positive_dir: true

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc5160 stepper_x]
cs_pin: PE15
spi_bus: spi4
#diag0_pin: ^!PG1
interpolate: false
run_current: 0.8
sense_resistor: 0.075
stealthchop_threshold: 0

##  A Stepper - Right
##  Connected to HV STEPPER 1
##  Endstop connected to Y-ENDSTOP
[stepper_y]
step_pin: PF15
dir_pin: !PF14
enable_pin: !PE9
rotation_distance: 40
microsteps: 32
full_steps_per_rotation:400  #set to 200 for 1.8 degree stepper
endstop_pin: PC2
position_min: 0
##--------------------------------------------------------------------

##  Uncomment for 250mm build
#position_endstop: 250
#position_max: 250

##  Uncomment for 300mm build
position_endstop: 310
position_max: 310

##  Uncomment for 350mm build
#position_endstop: 350
#position_max: 350

##--------------------------------------------------------------------
homing_speed: 25  #Max 100
homing_retract_dist: 5
homing_positive_dir: true

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc5160 stepper_y]
cs_pin: PE11
spi_bus: spi4
#diag0_pin: ^!PE10
interpolate: false
run_current: 0.8
sense_resistor: 0.075
stealthchop_threshold: 0
 
#####################################################################
#   Z Stepper Settings
#####################################################################

## Z0 Stepper - Front Left
##  Connected to STEPPER 0
##  Endstop connected to Z-ENDSTOP
[stepper_z]
step_pin: PD4
dir_pin: !PD3
enable_pin: !PD7
rotation_distance: 40
gear_ratio: 80:16  
microsteps: 32
endstop_pin: PC3
##  Z-position of nozzle (in mm) to z-endstop trigger point relative to print surface (Z0)
##  (+) value = endstop above Z0, (-) value = endstop below
##  Increasing position_endstop brings nozzle closer to the bed
##  After you run Z_ENDSTOP_CALIBRATE, position_endstop will be stored at the very end of your config
#position_endstop: -0.5
##--------------------------------------------------------------------

##  Uncomment below for 250mm build
#position_max: 230

##  Uncomment below for 300mm build
position_max: 280

##  Uncomment below for 350mm build
#position_max: 330

##--------------------------------------------------------------------
position_min: -5
homing_speed: 8
second_homing_speed: 3
homing_retract_dist: 3

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z]
uart_pin: PD5
#diag_pin: ^!PD6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z1 Stepper - Rear Left
##  Connected to STEPPER 1
[stepper_z1]
step_pin: PC12
dir_pin: PC11
enable_pin: !PD2
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z1]
uart_pin: PD0
#diag_pin: ^!PD1
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z2 Stepper - Rear Right
##  Connected to STEPPER 2
[stepper_z2]
step_pin: PC9
dir_pin: !PC8
enable_pin: !PC10
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z2]
uart_pin: PA8
#diag_pin: ^!PA15
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

##  Z3 Stepper - Front Right
##  Connected to STEPPER 3
[stepper_z3]
step_pin: PG7
dir_pin: PG6
enable_pin: !PC7
rotation_distance: 40
gear_ratio: 80:16 
microsteps: 32

##  Make sure to update below for your relevant driver (2209 or 5160)
[tmc2209 stepper_z3]
uart_pin: PG8
#diag_pin: ^!PC6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 0

#####################################################################
#   Extruder
#####################################################################

##  Connected to STEPPER 0
##  Heater - HEATER
##  Thermistor - TH0
[extruder]
step_pin: nhk:gpio23
dir_pin: nhk:gpio24
enable_pin: !nhk:gpio25
##  Update value below when you perform extruder calibration
##  If you ask for 100mm of filament, but in reality it is 98mm:
##  rotation_distance = <previous_rotation_distance> * <actual_extrude_distance> / 100
##  22.6789511 is a good starting point
rotation_distance: 22.6789511   #Bondtech 5mm Drive Gears
##  Update Gear Ratio depending on your Extruder Type
##  Use 50:10 for Stealthburner/Clockwork 2
##  Use 50:17 for Afterburner/Clockwork (BMG Gear Ratio)
##  Use 80:20 for M4, M3.1
gear_ratio: 50:10               #BMG Gear Ratio
microsteps: 32
full_steps_per_rotation: 200    #200 for 1.8 degree, 400 for 0.9 degree
nozzle_diameter: 0.400
filament_diameter: 1.75
heater_pin: nhk:gpio9
## Check what thermistor type you have. See https://www.klipper3d.org/Config_Reference.html#common-thermistors for common thermistor types.
## Use "Generic 3950" for NTC 100k 3950 thermistors
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: nhk:gpio29
pullup_resistor: 2200
min_temp: 10
max_temp: 270
max_power: 1.0
min_extrude_temp: 170
control = pid
pid_kp = 26.213
pid_ki = 1.304
pid_kd = 131.721
##  Try to keep pressure_advance below 1.0
#pressure_advance: 0.05
##  Default is 0.040, leave stock
#pressure_advance_smooth_time: 0.040

##  E0 on MOTOR6
##  Connected to STEPPER 4
[tmc2209 extruder]
uart_pin: nhk:gpio0
tx_pin: nhk:gpio1
interpolate: false
run_current: 0.5
sense_resistor: 0.100
stealthchop_threshold: 0


#####################################################################
#   Bed Heater
#####################################################################

[heater_bed]
##  SSR Pin - HEATBED
##  Thermistor - TH1
heater_pin: PG11
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: PA2
pullup_resistor: 2200
##  Adjust Max Power so your heater doesn't warp your bed. Rule of thumb is 0.4 watts / cm^2 .
max_power: 0.6
min_temp: 0
max_temp: 120
control: pid
pid_kp: 58.437
pid_ki: 2.347
pid_kd: 363.769

#####################################################################
#   Probe
#####################################################################

[probe]
##  Inductive Probe
##  Connected to Z-PROBE
##  This probe is not used for Z height, only Quad Gantry Leveling
pin: nhk:gpio10
x_offset: 0
y_offset: 25.0
#z_offset: 2.57
speed: 10.0
samples: 3
samples_result: median
sample_retract_dist: 3.0
samples_tolerance: 0.006
samples_tolerance_retries: 3

#####################################################################
#   Fan Control
#####################################################################

[fan]
##  Print Cooling Fan - FAN0
pin: nhk:gpio6
##tachometer_pin: PB0
kick_start_time: 0.5
##  Depending on your fan, you may need to increase this value
##  if your fan will not start. Can change cycle_time (increase)
##  if your fan is not able to slow down effectively
off_below: 0.10

[heater_fan hotend_fan]
##  Hotend Fan - FAN1
pin: nhk:gpio5
#tachometer_pin: PB4
max_power: 1.0
kick_start_time: 0.5
heater: extruder
heater_temp: 50.0
##  If you are experiencing back flow, you can reduce fan_speed
#fan_speed: 1.0

[controller_fan controller_fan]
##  Controller fan - FAN2
pin: PF7
##tachometer_pin: PF6
kick_start_time: 0.5
heater: heater_bed

[heater_fan exhaust_fan]
##  Exhaust fan - FAN3
pin: PF9
#tachometer_pin: PF8
max_power: 1.0
shutdown_speed: 0.0
kick_start_time: 5.0
heater: heater_bed
heater_temp: 60
fan_speed: 1.0

#####################################################################
#   Filament sensor
#####################################################################

#[filament_switch_sensor Filament]
#pause_on_runout: True
#runout_gcode: M600
#insert_gcode:
#event_delay: 3.0
#pause_delay: 0.5
#switch_pin: !PC0

#####################################################################
#   LED Control
#####################################################################

## Chamber Lighting (Optional)
## Connected to LED-STRIP
[output_pin caselight]
pin: PE6
pwm:true
hardware_pwm: False
value: 0.20 #startup value
shutdown_value: 0
value:1
cycle_time: 0.00025

## Connected to led (nitehawk sb)
[output_pin pcb_led]
pin: !nhk:gpio8

## Connected to NEOPIXEL (nitehawk sb)
#chain_count: 3
#color_order: GRBW
#initial_RED: 0.0
#initial_BLUE: 0.0
#initial_WHITE: 0.0


#####################################################################
#   Accelerometer
#####################################################################
[adxl345]
cs_pin: nhk:gpio21
spi_software_sclk_pin: nhk:gpio18
spi_software_mosi_pin: nhk:gpio20
spi_software_miso_pin: nhk:gpio19

[resonance_tester]
accel_chip: adxl345
probe_points:
    175, 175, 20


#####################################################################
#   TH
# #####################################################################
#[temperature_sensor chamber_temp]
[temperature_sensor chamber] #06/16/25 gfp chg to match variable name in PRINT_START >90C 'IF' block
## Chamber Temperature - T1
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: nhk:gpio28
min_temp: 0
max_temp: 100
gcode_id: chamber_th

[thermistor CMFB103F3950FANT]
temperature1: 0.0
resistance1: 32116.0
temperature2: 40.0
resistance2: 5309.0
temperature3: 80.0
resistance3: 1228.0

[temperature_sensor nh_temp]
## Nitehawk PCB Sensor
sensor_type: CMFB103F3950FANT
sensor_pin: nhk:gpio26
pullup_resistor: 2200
min_temp: 0
max_temp: 100
gcode_id: nh_th

#####################################################################
#   Homing and Gantry Adjustment Routines
#####################################################################

[idle_timeout]
timeout: 1800

[safe_z_home]
##  XY Location of the Z Endstop Switch
##  Update -10,-10 to the XY coordinates of your endstop pin 
##  (such as 157,305) after going through Z Endstop Pin
##  Location Definition step.
home_xy_position:210,310 #5/28/25 GFP
speed:100
z_hop:10
#z_hop:40 #06/07/25 gfp to prevent 'probe triggered prior to movement error'

##  Use QUAD_GANTRY_LEVEL to level a gantry.
##  Min & Max gantry corners - measure from nozzle at MIN (0,0) and 
##  MAX (250, 250), (300,300), or (350,350) depending on your printer size
##  to respective belt positions
[quad_gantry_level]

#--------------------------------------------------------------------
##  Gantry Corners for 250mm Build
##  Uncomment for 250mm build
#gantry_corners:
#   -60,-10
#   310, 320
##  Probe points
#points:
#   50,25
#   50,175
#   200,175
#   200,25
    
##  Gantry Corners for 300mm Build
##  Uncomment for 300mm build
gantry_corners:
   -60,-10
   360,370
##  Probe points
points:
   50,25
   50,225
   250,225
   250,25

##  Gantry Corners for 350mm Build
##  Uncomment for 350mm build
#gantry_corners:
#   -60,-10
#   410,420
##  Probe points
#points:
#   50,25
#   50,275
#   300,275
#   300,25

#--------------------------------------------------------------------
speed: 100
horizontal_move_z: 10
retries: 5
retry_tolerance: 0.0075
max_adjust: 10



##--------------------------------------------------------------------

speed: 200
horizontal_move_z: 10
retries: 5
retry_tolerance: 0.0075

########################################
# EXP1 / EXP2 (display) pins
########################################

[board_pins]
aliases:
    # EXP1 header
    EXP1_1=PG9, EXP1_2=PG12,
    EXP1_3=PG13, EXP1_4=PG14,
    EXP1_5=PC13, EXP1_6=PC14,    # Slot in the socket on this side
    EXP1_7=PC15, EXP1_8=PF0,
    EXP1_9=<GND>, EXP1_10=<5V>,

    # EXP2 header
    EXP2_1=PA6, EXP2_2=PA5,
    EXP2_3=PE2, EXP2_4=PE4,
    EXP2_5=PE3, EXP2_6=PA7,      # Slot in the socket on this side
    EXP2_7=PE5, EXP2_8=<RST>,
    EXP2_9=<GND>, EXP2_10=PE4

#####################################################################
#   Displays
#####################################################################

##  Uncomment the display that you have
#--------------------------------------------------------------------

#[display]
##  RepRapDiscount 128x64 Full Graphic Smart Controller
#lcd_type: st7920
#cs_pin: EXP1_4
#sclk_pin: EXP1_5
#sid_pin: EXP1_3
#menu_timeout: 40
#encoder_pins: ^EXP2_5, ^EXP2_3
#click_pin: ^!EXP1_2

#[output_pin beeper]
#pin: EXP1_1

#--------------------------------------------------------------------

#[display]
##  mini12864 LCD Display
#lcd_type: uc1701
#cs_pin: EXP1_3
#a0_pin: EXP1_4
#rst_pin: EXP1_5
#encoder_pins: ^EXP2_5, ^EXP2_3
#click_pin: ^!EXP1_2
#contrast: 63
#spi_software_miso_pin: EXP2_1
#spi_software_mosi_pin: EXP2_6
#spi_software_sclk_pin: EXP2_2

#[neopixel btt_mini12864]
##  To control Neopixel RGB in mini12864 display
#pin: EXP1_6
#chain_count: 3
#initial_RED: 0.1
#initial_GREEN: 0.5
#initial_BLUE: 0.0
#color_order: RGB

##  Set RGB values on boot up for each Neopixel. 
##  Index 1 = display, Index 2 and 3 = Knob
#[delayed_gcode setdisplayneopixel]
#initial_duration: 1
#gcode:
#        SET_LED LED=btt_mini12864 RED=1 GREEN=1 BLUE=1 INDEX=1 TRANSMIT=0
#        SET_LED LED=btt_mini12864 RED=1 GREEN=0 BLUE=0 INDEX=2 TRANSMIT=0
#        SET_LED LED=btt_mini12864 RED=1 GREEN=0 BLUE=0 INDEX=3 

#--------------------------------------------------------------------
#05/30/25 added gfp
[bed_mesh]
speed: 120
horizontal_move_z: 5
#mesh_min: 35, 6
#mesh_min: 5, 30 #5/30/25 probe offset is 0,25, so result is 5,5
#mesh_min: 25, 25 #06/01/25 gfp: 25mm from each edge
mesh_min: 30, 30 #06/12/25 gfp: 30mm from each edge, 25 was not enough

mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5
zero_reference_position: 150,150 #for use with stock z endstop. Added 06/01/25 gfp

#06/16/25 gfp added to dim the caselights
[delayed_gcode _TURN_ON_CASELIGHTS]
initial_duration: 1
gcode:
  CASELIGHTS_ON

[gcode_macro CASELIGHTS_ON]
gcode:
  SET_PIN PIN=caselight VALUE=0.06
  

#####################################################################
#   Macros
#####################################################################

[gcode_macro G32]
gcode:
    SAVE_GCODE_STATE NAME=STATE_G32
    G90
    G28
    QUAD_GANTRY_LEVEL
    G28
    ##  Uncomment for for your size printer:
    #--------------------------------------------------------------------
    ##  Uncomment for 250mm build
    #G0 X125 Y125 Z30 F3600
    
    ##  Uncomment for 300 build
    G0 X150 Y150 Z30 F3600
    
    ##  Uncomment for 350mm build
    #G0 X175 Y175 Z30 F3600
    #--------------------------------------------------------------------
    RESTORE_GCODE_STATE NAME=STATE_G32
   
[gcode_macro PRINT_START]
																							   
gcode:
  # This part fetches data from your slicer. Such as bed, extruder, and chamber temps and size of your printer.
  {% set target_bed = params.BED|int %}
  {% set target_extruder = params.EXTRUDER|int %}
  {% set target_chamber = params.CHAMBER|default("45")|int %}
  {% set x_wait = printer.toolhead.axis_maximum.x|float / 2 %}
  {% set y_wait = printer.toolhead.axis_maximum.y|float / 2 %}

  ##  Uncomment for Beacon Contact (1 of 4 for beacon contact)
  #SET_GCODE_OFFSET Z=0                                 # Set offset to 0

  # Home the printer, set absolute positioning and update the Stealthburner LEDs.
  STATUS_HOMING                                         # Set LEDs to homing-mode
														  
  G28                                                   # Full home (XYZ)
  G90                                                   # Absolute position

  ##  Uncomment for bed mesh (1 of 2 for bed mesh)
  BED_MESH_CLEAR                                       # Clear old saved bed mesh (if any)

  # Check if the bed temp is higher than 90c - if so then trigger a heatsoak.
  {% if params.BED|int > 90 %}
    SET_DISPLAY_TEXT MSG="Bed: {target_bed}c"           # Display info on display
    STATUS_HEATING                                      # Set LEDs to heating-mode
    M106 S255                                           # Turn on the PT-fan

    ##  Uncomment if you have a Nevermore.
    #SET_PIN PIN=nevermore VALUE=1                      # Turn on the nevermore

    G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
    ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
    M190 S{target_bed}                                  # Set the target temp for the bed
    SET_DISPLAY_TEXT MSG="Heatsoak: {target_chamber}c"  # Display info on display
    TEMPERATURE_WAIT SENSOR="temperature_sensor chamber" MINIMUM={target_chamber}   # Waits for chamber temp

  # If the bed temp is not over 90c, then skip the heatsoak and just heat up to set temp with a 5 min soak
  {% else %}
    SET_DISPLAY_TEXT MSG="Bed: {target_bed}c"           # Display info on display
    STATUS_HEATING                                      # Set LEDs to heating-mode
    G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
    ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
    M190 S{target_bed}                                  # Set the target temp for the bed
    SET_DISPLAY_TEXT MSG="Soak for 5 min"               # Display info on display
    G4 P300000                                          # Wait 5 min for the bedtemp to stabilize
  {% endif %}

  # Heat hotend to 150c. This helps with getting a correct Z-home.
  SET_DISPLAY_TEXT MSG="Hotend: 150c"                   # Display info on display
  M109 S150                                             # Heat hotend to 150c

  ##  Uncomment for Beacon contact (2 of 4 for beacon contact)
  #G28 Z METHOD=CONTACT CALIBRATE=1                     # Calibrate z offset and beacon model

  ##  Uncomment for Trident (Z_TILT_ADJUST)
  #SET_DISPLAY_TEXT MSG="Leveling"                      # Display info on display
  #STATUS_LEVELING                                      # Set LEDs to leveling-mode
  #Z_TILT_ADJUST                                        # Level the printer via Z_TILT_ADJUST
  #G28 Z                                                # Home Z again after Z_TILT_ADJUST

  ##  Uncomment for V2.4 (Quad gantry level AKA QGL)
  SET_DISPLAY_TEXT MSG="Lexyzveling"                      # Display info on display
  STATUS_LEVELING                                      # Set LEDs to leveling-mode
  QUAD_GANTRY_LEVEL                                    # Level the printer via QGL
  G28 Z                                                # Home Z again after QGL

  ##  Uncomment for bed mesh (2 of 2 for bed mesh)
  SET_DISPLAY_TEXT MSG="Bed mesh"                      # Display info on display
  STATUS_MESHING                                       # Set LEDs to bed mesh-mode
  BED_MESH_CALIBRATE                                   # Start the bed mesh (add ADAPTIVE=1) for adaptive bed mesh

  ## Uncomment for Beacon Contact (3 of 4 for beacon contact)
  #G28 Z METHOD=CONTACT CALIBRATE=0                     # Calibrate z offset only with hot nozzle

  # Heat up the hotend up to target via data from slicer
  SET_DISPLAY_TEXT MSG="Hotend: {target_extruder}c"     # Display info on display
  STATUS_HEATING                                        # Set LEDs to heating-mode
  G1 X{x_wait} Y{y_wait} Z15 F9000                    # Go to center of the bed
  ;G1 X{x_wait} Y{y_wait} Z30 F9000                    # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error
  M107                                                  # Turn off partcooling fan
  M109 S{target_extruder}                               # Heat the hotend to set temp

  ##   Uncomment for Beacon Contact (4 of 4 for beacon contact)
  #SET_GCODE_OFFSET Z=0.06                              # Add a little offset for hotend thermal expansion

  # Get ready to print by doing a primeline and updating the LEDs
  SET_DISPLAY_TEXT MSG="Printer goes brr"               # Display info on display
  STATUS_PRINTING                                       # Set LEDs to printing-mode
  G0 X{x_wait - 50} Y4 F10000                           # Go to starting point
  G0 Z0.4                                               # Raise Z to 0.4
  G91                                                   # Incremental positioning 
  G1 X100 E20 F1000                                     # Primeline
  G90                                                   # Absolute position
  
[gcode_macro PRINT_END]
#   Use PRINT_END for the slicer ending script - please customise for your slicer of choice
gcode:
    # safe anti-stringing move coords
    {% set th = printer.toolhead %}
    {% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}
    {% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}
    {% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}
    
    SAVE_GCODE_STATE NAME=STATE_PRINT_END
    
    M400                           ; wait for buffer to clear
    G92 E0                         ; zero the extruder
    G1 E-5.0 F1800                 ; retract filament
    
    TURN_OFF_HEATERS
    
    G90                                      ; absolute positioning
    G0 X{x_safe} Y{y_safe} Z{z_safe} F20000  ; move nozzle to remove stringing
    ;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600  ; park nozzle at rear
    G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600  ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end
    M107                                     ; turn off fan
    
    BED_MESH_CLEAR
    RESTORE_GCODE_STATE NAME=STATE_PRINT_END


[gcode_macro CHOME]
description: Homes XYZ axis only if printer is in a non-homed state
gcode:
  {% if "xyz" not in printer.toolhead.homed_axes %}
    G28
  {% endif %}

[gcode_macro FRONT]
description: Moves the toolhead to the front
gcode:
  CHOME
  {% set x_center = printer.toolhead.axis_maximum.x|float / 2.0 %}
  {% set y_center = printer.toolhead.axis_maximum.y|float / 2.0 %}
  G90
  G1 X{x_center} Y10 F7800

[gcode_macro _LOGO_PENDING]
gcode:
  SET_LED LED=rgb_light RED=0.15 GREEN=0.5 BLUE=0.75 WHITE=0 INDEX=1

[gcode_macro _LOGO_READY]
gcode:
  SET_LED LED=rgb_light RED=0.99 GREEN=0.0 BLUE=0.0 WHITE=0 INDEX=1

[gcode_macro _LOGO_OFF]
gcode:
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=1
  

[gcode_macro _HEADLIGHT_ON]
gcode:
  SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=2 TRANSMIT=0
  SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=3


[gcode_macro _HEADLIGHT_OFF]
gcode:
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=2 TRANSMIT=0
  SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=3
  

[gcode_macro UNLOAD_FILAMENT]
description: Unloads filament from toolhead
gcode:
  {% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}
  {% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}
  {% set CURRENT_TARGET = printer.extruder.target|float %}
  CHOME
  G91                         ; relative positioning
  G1 Z20                      ; move nozzle upwards
  FRONT                       ; move the toolhead to the front
  {% if EXTRUDER_TEMP != 0 %}
    ;_LOGO_PENDING
    STATUS_HEATING ;06/07/25 gfp chg to something that works
    SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}" 
    {% if CURRENT_TARGET < EXTRUDER_TEMP %}
      M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot
    {% endif %}
    TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach
  {% endif %}
  ;_LOGO_READY
  STATUS_READY ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Starting unload" 
  M83                         ; set extruder to relative mode
  G1 E10 F300                 ; extrude a little to soften tip
  G1 E-8 F3600                ; quickly retract a small amount to elimate stringing
  G4 P200                     ; pause for a short amount of time
  G1 E-50 F400                ; retract slowly the rest of the way
  G1 E-20 F300
  M400                        ; wait for moves to finish
  M117 Unload Complete!
  ;_LOGO_OFF
  STATUS_OFF ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Unload Complete" 

[gcode_macro LOAD_FILAMENT]
description: Loads new filament into toolhead
gcode:
  {% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}
  {% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}
  {% set CURRENT_TARGET = printer.extruder.target|float %}
  FRONT                       ; move the toolhead to the front
  {% if EXTRUDER_TEMP != 0 %}
    ;_LOGO_PENDING
    STATUS_HEATING ;06/07/25 gfp chg to something that works
    SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}" 

    {% if CURRENT_TARGET < EXTRUDER_TEMP %}
      M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot
    {% endif %}
    TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach
  {% endif %}
  ;_LOGO_READY
  STATUS_READY ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Starting unload" 
;  _HEADLIGHT_ON
  M83                         ; set extruder to relative mode
  G1 E50 F300                 ; extrude slowlyL
  G1 E50 F300
  M400                        ; wait for moves to finish
  M117 Load Complete!
  ;_LOGO_OFF
  STATUS_OFF ;06/07/25 gfp chg to something that works
  SET_DISPLAY_TEXT MSG="Unload Complete" 
  ;_HEADLIGHT_OFF


;<---------------------- 06/17/25 gfp another try at color change using Ellis' macros ---------------------->
[pause_resume]

[gcode_macro PAUSE]
rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                                  ; disable filament sensor 06/17/25 gfp commented out
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        BASE_PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro M600]
;rename_existing: BASE_PAUSE
gcode:
    # Parameters
    {% set z = params.Z|default(10)|int %}                                                   ; z hop amount

    {% if printer['pause_resume'].is_paused|int == 0 %}
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                                  ; disable filament sensor 06/17/25 gfp commented out
        SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume
        ;BASE_PAUSE                                                                           ; pause print
        PAUSE                                                                           ; pause print
        {% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %}       ; check that zhop doesn't exceed z max
            G91                                                                              ; relative positioning
            G1 Z{z} F900                                                                     ; raise Z up by z hop amount
        {% else %}
            { action_respond_info("Pause zhop exceeds maximum Z height.") }                  ; if z max is exceeded, show message and set zhop value for resume to 0
            SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
        {% endif %}
        G90                                                                                  ; absolute positioning
        G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000   ; park toolhead at front center
        SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
        M104 S0                                                                              ; turn off hotend
        SET_IDLE_TIMEOUT TIMEOUT=43200                                                       ; set timeout to 12 hours
    {% endif %}

[gcode_macro RESUME]
rename_existing: BASE_RESUME
variable_zhop: 0
variable_etemp: 0
gcode:
    # Parameters
    {% set e = params.E|default(2.5)|int %}                                          ; hotend prime amount (in mm)

    {% if printer['pause_resume'].is_paused|int == 1 %}
        ;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0                         ; disable filament sensor 06/17/25 gfp commented out
        #INITIAL_RGB                                                                 ; reset LCD color
        SET_IDLE_TIMEOUT TIMEOUT={printer.configfile.settings.idle_timeout.timeout}  ; set timeout back to configured value
        {% if etemp > 0 %}
            M109 S{etemp|int}                                                        ; wait for hotend to heat back up
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSEPARK MOVE=1 MOVE_SPEED=100                     ; go back to parked position in case toolhead was moved during pause (otherwise the return zhop can error)
        G91                                                                          ; relative positioning
        M83                                                                          ; relative extruder positioning
        {% if printer[printer.toolhead.extruder].temperature >= printer.configfile.settings.extruder.min_extrude_temp %}
            G1 Z{zhop * -1} E{e} F900                                                ; prime nozzle by E, lower Z back down
        {% else %}
            G1 Z{zhop * -1} F900                                                     ; lower Z back down without priming (just in case we are testing the macro with cold hotend)
        {% endif %}
        RESTORE_GCODE_STATE NAME=PAUSE MOVE=1 MOVE_SPEED=60                          ; restore position
        BASE_RESUME                                                                  ; resume print
    {% endif %}

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	-0.018287, -0.007037, -0.005787, -0.023287, -0.037037
#*# 	0.006713, 0.005463, 0.001713, 0.000463, -0.010787
#*# 	0.004213, 0.001713, -0.002037, -0.000787, -0.002037
#*# 	0.014213, 0.017963, 0.011713, 0.009213, 0.009213
#*# 	0.021713, 0.016713, 0.007963, 0.009213, 0.007963
#*# x_count = 5
#*# y_count = 5
#*# mesh_x_pps = 2
#*# mesh_y_pps = 2
#*# algo = lagrange
#*# tension = 0.2
#*# min_x = 25.0
#*# max_x = 275.0
#*# min_y = 25.0
#*# max_y = 250.0
#*#
#*# [stepper_z]
#*# position_endstop = 0.820
#*#
#*# [probe]
#*# z_offset = 2.660

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# This file contains common pin mappings for the LDO Voron 2.4 Rev. D kit

# See docs/Config_Reference.md for a description of parameters.

## Voron Design VORON 2.4 250/300/350mm Leviathan V1.1 + Nitehawk-SB config

## *** THINGS TO CHANGE/CHECK: ***

## MCU paths [mcu] section

## Thermistor types [extruder] and [heater_bed] sections - See https://www.klipper3d.org/Config_Reference.html#common-thermistors for common thermistor types

## Z Endstop Switch location [safe_z_home] section

## Homing end position [gcode_macro G32] section

## Z Endstop Switch offset for Z0 [stepper_z] section

## Probe points [quad_gantry_level] section

## Min & Max gantry corner postions [quad_gantry_level] section

## PID tune [extruder] and [heater_bed] sections

## Probe pin [probe] section

## Fine tune E steps [extruder] section

[include mainsail.cfg]

[include stealthburner_leds.cfg]

[mcu]

## Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify

##--------------------------------------------------------------------

serial: /dev/serial/by-id/usb-Klipper_stm32h743xx_2A001E000A51333038383535-if00

restart_method: command

##--------------------------------------------------------------------

[mcu nhk]

## Obtain definition by "ls -l /dev/serial/by-id/" then unplug to verify

##--------------------------------------------------------------------

serial: /dev/serial/by-id/usb-Klipper_rp2040_4E363334324B5803-if00

restart_method: command

##--------------------------------------------------------------------

[printer]

kinematics: corexy

max_velocity: 300

max_accel: 10000

max_z_velocity: 15 #Max 15 for 12V TMC Drivers, can increase for 24V

max_z_accel: 350

square_corner_velocity: 5.0

#####################################################################

# X/Y Stepper Settings

#####################################################################

## B Stepper - Left

## Connected to HV STEPPER 0

## Endstop connected to X-ENDSTOP

[stepper_x]

step_pin: PB10

dir_pin: !PB11

enable_pin: !PG0

rotation_distance: 40

microsteps: 32

full_steps_per_rotation:400 #set to 200 for 1.8 degree stepper

endstop_pin: PC1

position_min: 0

##--------------------------------------------------------------------

## Uncomment below for 250mm build

#position_endstop: 250

#position_max: 250

## Uncomment for 300mm build

position_endstop: 300

position_max: 300

## Uncomment for 350mm build

#position_endstop: 350

#position_max: 350

##--------------------------------------------------------------------

homing_speed: 25 #Max 100

homing_retract_dist: 5

homing_positive_dir: true

## Make sure to update below for your relevant driver (2209 or 5160)

[tmc5160 stepper_x]

cs_pin: PE15

spi_bus: spi4

#diag0_pin: ^!PG1

interpolate: false

run_current: 0.8

sense_resistor: 0.075

stealthchop_threshold: 0

## A Stepper - Right

## Connected to HV STEPPER 1

## Endstop connected to Y-ENDSTOP

[stepper_y]

step_pin: PF15

dir_pin: !PF14

enable_pin: !PE9

rotation_distance: 40

microsteps: 32

full_steps_per_rotation:400 #set to 200 for 1.8 degree stepper

endstop_pin: PC2

position_min: 0

##--------------------------------------------------------------------

## Uncomment for 250mm build

#position_endstop: 250

#position_max: 250

## Uncomment for 300mm build

position_endstop: 310

position_max: 310

## Uncomment for 350mm build

#position_endstop: 350

#position_max: 350

##--------------------------------------------------------------------

homing_speed: 25 #Max 100

homing_retract_dist: 5

homing_positive_dir: true

## Make sure to update below for your relevant driver (2209 or 5160)

[tmc5160 stepper_y]

cs_pin: PE11

spi_bus: spi4

#diag0_pin: ^!PE10

interpolate: false

run_current: 0.8

sense_resistor: 0.075

stealthchop_threshold: 0

#####################################################################

# Z Stepper Settings

#####################################################################

## Z0 Stepper - Front Left

## Connected to STEPPER 0

## Endstop connected to Z-ENDSTOP

[stepper_z]

step_pin: PD4

dir_pin: !PD3

enable_pin: !PD7

rotation_distance: 40

gear_ratio: 80:16

microsteps: 32

endstop_pin: PC3

## Z-position of nozzle (in mm) to z-endstop trigger point relative to print surface (Z0)

## (+) value = endstop above Z0, (-) value = endstop below

## Increasing position_endstop brings nozzle closer to the bed

## After you run Z_ENDSTOP_CALIBRATE, position_endstop will be stored at the very end of your config

#position_endstop: -0.5

##--------------------------------------------------------------------

## Uncomment below for 250mm build

#position_max: 230

## Uncomment below for 300mm build

position_max: 280

## Uncomment below for 350mm build

#position_max: 330

##--------------------------------------------------------------------

position_min: -5

homing_speed: 8

second_homing_speed: 3

homing_retract_dist: 3

## Make sure to update below for your relevant driver (2209 or 5160)

[tmc2209 stepper_z]

uart_pin: PD5

#diag_pin: ^!PD6

interpolate: false

run_current: 0.8

sense_resistor: 0.110

stealthchop_threshold: 0

## Z1 Stepper - Rear Left

## Connected to STEPPER 1

[stepper_z1]

step_pin: PC12

dir_pin: PC11

enable_pin: !PD2

rotation_distance: 40

gear_ratio: 80:16

microsteps: 32

## Make sure to update below for your relevant driver (2209 or 5160)

[tmc2209 stepper_z1]

uart_pin: PD0

#diag_pin: ^!PD1

interpolate: false

run_current: 0.8

sense_resistor: 0.110

stealthchop_threshold: 0

## Z2 Stepper - Rear Right

## Connected to STEPPER 2

[stepper_z2]

step_pin: PC9

dir_pin: !PC8

enable_pin: !PC10

rotation_distance: 40

gear_ratio: 80:16

microsteps: 32

## Make sure to update below for your relevant driver (2209 or 5160)

[tmc2209 stepper_z2]

uart_pin: PA8

#diag_pin: ^!PA15

interpolate: false

run_current: 0.8

sense_resistor: 0.110

stealthchop_threshold: 0

## Z3 Stepper - Front Right

## Connected to STEPPER 3

[stepper_z3]

step_pin: PG7

dir_pin: PG6

enable_pin: !PC7

rotation_distance: 40

gear_ratio: 80:16

microsteps: 32

## Make sure to update below for your relevant driver (2209 or 5160)

[tmc2209 stepper_z3]

uart_pin: PG8

#diag_pin: ^!PC6

interpolate: false

run_current: 0.8

sense_resistor: 0.110

stealthchop_threshold: 0

#####################################################################

# Extruder

#####################################################################

## Connected to STEPPER 0

## Heater - HEATER

## Thermistor - TH0

[extruder]

step_pin: nhk:gpio23

dir_pin: nhk:gpio24

enable_pin: !nhk:gpio25

## Update value below when you perform extruder calibration

## If you ask for 100mm of filament, but in reality it is 98mm:

## rotation_distance = <previous_rotation_distance> * <actual_extrude_distance> / 100

## 22.6789511 is a good starting point

rotation_distance: 22.6789511 #Bondtech 5mm Drive Gears

## Update Gear Ratio depending on your Extruder Type

## Use 50:10 for Stealthburner/Clockwork 2

## Use 50:17 for Afterburner/Clockwork (BMG Gear Ratio)

## Use 80:20 for M4, M3.1

gear_ratio: 50:10 #BMG Gear Ratio

microsteps: 32

full_steps_per_rotation: 200 #200 for 1.8 degree, 400 for 0.9 degree

nozzle_diameter: 0.400

filament_diameter: 1.75

heater_pin: nhk:gpio9

## Check what thermistor type you have. See https://www.klipper3d.org/Config_Reference.html#common-thermistors for common thermistor types.

## Use "Generic 3950" for NTC 100k 3950 thermistors

sensor_type: ATC Semitec 104NT-4-R025H42G

sensor_pin: nhk:gpio29

pullup_resistor: 2200

min_temp: 10

max_temp: 270

max_power: 1.0

min_extrude_temp: 170

control = pid

pid_kp = 26.213

pid_ki = 1.304

pid_kd = 131.721

## Try to keep pressure_advance below 1.0

#pressure_advance: 0.05

## Default is 0.040, leave stock

#pressure_advance_smooth_time: 0.040

## E0 on MOTOR6

## Connected to STEPPER 4

[tmc2209 extruder]

uart_pin: nhk:gpio0

tx_pin: nhk:gpio1

interpolate: false

run_current: 0.5

sense_resistor: 0.100

stealthchop_threshold: 0

#####################################################################

# Bed Heater

#####################################################################

[heater_bed]

## SSR Pin - HEATBED

## Thermistor - TH1

heater_pin: PG11

sensor_type: ATC Semitec 104NT-4-R025H42G

sensor_pin: PA2

pullup_resistor: 2200

## Adjust Max Power so your heater doesn't warp your bed. Rule of thumb is 0.4 watts / cm^2 .

max_power: 0.6

min_temp: 0

max_temp: 120

control: pid

pid_kp: 58.437

pid_ki: 2.347

pid_kd: 363.769

#####################################################################

# Probe

#####################################################################

[probe]

## Inductive Probe

## Connected to Z-PROBE

## This probe is not used for Z height, only Quad Gantry Leveling

pin: nhk:gpio10

x_offset: 0

y_offset: 25.0

#z_offset: 2.57

speed: 10.0

samples: 3

samples_result: median

sample_retract_dist: 3.0

samples_tolerance: 0.006

samples_tolerance_retries: 3

#####################################################################

# Fan Control

#####################################################################

[fan]

## Print Cooling Fan - FAN0

pin: nhk:gpio6

##tachometer_pin: PB0

kick_start_time: 0.5

## Depending on your fan, you may need to increase this value

## if your fan will not start. Can change cycle_time (increase)

## if your fan is not able to slow down effectively

off_below: 0.10

[heater_fan hotend_fan]

## Hotend Fan - FAN1

pin: nhk:gpio5

#tachometer_pin: PB4

max_power: 1.0

kick_start_time: 0.5

heater: extruder

heater_temp: 50.0

## If you are experiencing back flow, you can reduce fan_speed

#fan_speed: 1.0

[controller_fan controller_fan]

## Controller fan - FAN2

pin: PF7

##tachometer_pin: PF6

kick_start_time: 0.5

heater: heater_bed

[heater_fan exhaust_fan]

## Exhaust fan - FAN3

pin: PF9

#tachometer_pin: PF8

max_power: 1.0

shutdown_speed: 0.0

kick_start_time: 5.0

heater: heater_bed

heater_temp: 60

fan_speed: 1.0

#####################################################################

# Filament sensor

#####################################################################

#[filament_switch_sensor Filament]

#pause_on_runout: True

#runout_gcode: M600

#insert_gcode:

#event_delay: 3.0

#pause_delay: 0.5

#switch_pin: !PC0

#####################################################################

# LED Control

#####################################################################

## Chamber Lighting (Optional)

## Connected to LED-STRIP

[output_pin caselight]

pin: PE6

pwm:true

hardware_pwm: False

value: 0.20 #startup value

shutdown_value: 0

value:1

cycle_time: 0.00025

## Connected to led (nitehawk sb)

[output_pin pcb_led]

pin: !nhk:gpio8

## Connected to NEOPIXEL (nitehawk sb)

#chain_count: 3

#color_order: GRBW

#initial_RED: 0.0

#initial_BLUE: 0.0

#initial_WHITE: 0.0

#####################################################################

# Accelerometer

#####################################################################

[adxl345]

cs_pin: nhk:gpio21

spi_software_sclk_pin: nhk:gpio18

spi_software_mosi_pin: nhk:gpio20

spi_software_miso_pin: nhk:gpio19

[resonance_tester]

accel_chip: adxl345

probe_points:

175, 175, 20

#####################################################################

# TH

# #####################################################################

#[temperature_sensor chamber_temp]

[temperature_sensor chamber] #06/16/25 gfp chg to match variable name in PRINT_START >90C 'IF' block

## Chamber Temperature - T1

sensor_type: ATC Semitec 104NT-4-R025H42G

sensor_pin: nhk:gpio28

min_temp: 0

max_temp: 100

gcode_id: chamber_th

[thermistor CMFB103F3950FANT]

temperature1: 0.0

resistance1: 32116.0

temperature2: 40.0

resistance2: 5309.0

temperature3: 80.0

resistance3: 1228.0

[temperature_sensor nh_temp]

## Nitehawk PCB Sensor

sensor_type: CMFB103F3950FANT

sensor_pin: nhk:gpio26

pullup_resistor: 2200

min_temp: 0

max_temp: 100

gcode_id: nh_th

#####################################################################

# Homing and Gantry Adjustment Routines

#####################################################################

[idle_timeout]

timeout: 1800

[safe_z_home]

## XY Location of the Z Endstop Switch

## Update -10,-10 to the XY coordinates of your endstop pin

## (such as 157,305) after going through Z Endstop Pin

## Location Definition step.

home_xy_position:210,310 #5/28/25 GFP

speed:100

z_hop:10

#z_hop:40 #06/07/25 gfp to prevent 'probe triggered prior to movement error'

## Use QUAD_GANTRY_LEVEL to level a gantry.

## Min & Max gantry corners - measure from nozzle at MIN (0,0) and

## MAX (250, 250), (300,300), or (350,350) depending on your printer size

## to respective belt positions

[quad_gantry_level]

#--------------------------------------------------------------------

## Gantry Corners for 250mm Build

## Uncomment for 250mm build

#gantry_corners:

# -60,-10

# 310, 320

## Probe points

#points:

# 50,25

# 50,175

# 200,175

# 200,25

## Gantry Corners for 300mm Build

## Uncomment for 300mm build

gantry_corners:

-60,-10

360,370

## Probe points

points:

50,25

50,225

250,225

250,25

## Gantry Corners for 350mm Build

## Uncomment for 350mm build

#gantry_corners:

# -60,-10

# 410,420

## Probe points

#points:

# 50,25

# 50,275

# 300,275

# 300,25

#--------------------------------------------------------------------

speed: 100

horizontal_move_z: 10

retries: 5

retry_tolerance: 0.0075

max_adjust: 10

##--------------------------------------------------------------------

speed: 200

horizontal_move_z: 10

retries: 5

retry_tolerance: 0.0075

########################################

# EXP1 / EXP2 (display) pins

########################################

[board_pins]

aliases:

# EXP1 header

EXP1_1=PG9, EXP1_2=PG12,

EXP1_3=PG13, EXP1_4=PG14,

EXP1_5=PC13, EXP1_6=PC14, # Slot in the socket on this side

EXP1_7=PC15, EXP1_8=PF0,

EXP1_9=<GND>, EXP1_10=<5V>,

# EXP2 header

EXP2_1=PA6, EXP2_2=PA5,

EXP2_3=PE2, EXP2_4=PE4,

EXP2_5=PE3, EXP2_6=PA7, # Slot in the socket on this side

EXP2_7=PE5, EXP2_8=<RST>,

EXP2_9=<GND>, EXP2_10=PE4

#####################################################################

# Displays

#####################################################################

## Uncomment the display that you have

#--------------------------------------------------------------------

#[display]

## RepRapDiscount 128x64 Full Graphic Smart Controller

#lcd_type: st7920

#cs_pin: EXP1_4

#sclk_pin: EXP1_5

#sid_pin: EXP1_3

#menu_timeout: 40

#encoder_pins: ^EXP2_5, ^EXP2_3

#click_pin: ^!EXP1_2

#[output_pin beeper]

#pin: EXP1_1

#--------------------------------------------------------------------

#[display]

## mini12864 LCD Display

#lcd_type: uc1701

#cs_pin: EXP1_3

#a0_pin: EXP1_4

#rst_pin: EXP1_5

#encoder_pins: ^EXP2_5, ^EXP2_3

#click_pin: ^!EXP1_2

#contrast: 63

#spi_software_miso_pin: EXP2_1

#spi_software_mosi_pin: EXP2_6

#spi_software_sclk_pin: EXP2_2

#[neopixel btt_mini12864]

## To control Neopixel RGB in mini12864 display

#pin: EXP1_6

#chain_count: 3

#initial_RED: 0.1

#initial_GREEN: 0.5

#initial_BLUE: 0.0

#color_order: RGB

## Set RGB values on boot up for each Neopixel.

## Index 1 = display, Index 2 and 3 = Knob

#[delayed_gcode setdisplayneopixel]

#initial_duration: 1

#gcode:

# SET_LED LED=btt_mini12864 RED=1 GREEN=1 BLUE=1 INDEX=1 TRANSMIT=0

# SET_LED LED=btt_mini12864 RED=1 GREEN=0 BLUE=0 INDEX=2 TRANSMIT=0

# SET_LED LED=btt_mini12864 RED=1 GREEN=0 BLUE=0 INDEX=3

#--------------------------------------------------------------------

#05/30/25 added gfp

[bed_mesh]

speed: 120

horizontal_move_z: 5

#mesh_min: 35, 6

#mesh_min: 5, 30 #5/30/25 probe offset is 0,25, so result is 5,5

#mesh_min: 25, 25 #06/01/25 gfp: 25mm from each edge

mesh_min: 30, 30 #06/12/25 gfp: 30mm from each edge, 25 was not enough

mesh_max: 275, 250

probe_count: 5, 5 #06/01/25 chg to 5,5

zero_reference_position: 150,150 #for use with stock z endstop. Added 06/01/25 gfp

#06/16/25 gfp added to dim the caselights

[delayed_gcode _TURN_ON_CASELIGHTS]

initial_duration: 1

gcode:

CASELIGHTS_ON

[gcode_macro CASELIGHTS_ON]

gcode:

SET_PIN PIN=caselight VALUE=0.06

#####################################################################

# Macros

#####################################################################

[gcode_macro G32]

gcode:

SAVE_GCODE_STATE NAME=STATE_G32

G90

G28

QUAD_GANTRY_LEVEL

G28

## Uncomment for for your size printer:

#--------------------------------------------------------------------

## Uncomment for 250mm build

#G0 X125 Y125 Z30 F3600

## Uncomment for 300 build

G0 X150 Y150 Z30 F3600

## Uncomment for 350mm build

#G0 X175 Y175 Z30 F3600

#--------------------------------------------------------------------

RESTORE_GCODE_STATE NAME=STATE_G32

[gcode_macro PRINT_START]

gcode:

# This part fetches data from your slicer. Such as bed, extruder, and chamber temps and size of your printer.

{% set target_bed = params.BED|int %}

{% set target_extruder = params.EXTRUDER|int %}

{% set target_chamber = params.CHAMBER|default("45")|int %}

{% set x_wait = printer.toolhead.axis_maximum.x|float / 2 %}

{% set y_wait = printer.toolhead.axis_maximum.y|float / 2 %}

## Uncomment for Beacon Contact (1 of 4 for beacon contact)

#SET_GCODE_OFFSET Z=0 # Set offset to 0

# Home the printer, set absolute positioning and update the Stealthburner LEDs.

STATUS_HOMING # Set LEDs to homing-mode

G28 # Full home (XYZ)

G90 # Absolute position

## Uncomment for bed mesh (1 of 2 for bed mesh)

BED_MESH_CLEAR # Clear old saved bed mesh (if any)

# Check if the bed temp is higher than 90c - if so then trigger a heatsoak.

{% if params.BED|int > 90 %}

SET_DISPLAY_TEXT MSG="Bed: {target_bed}c" # Display info on display

STATUS_HEATING # Set LEDs to heating-mode

M106 S255 # Turn on the PT-fan

## Uncomment if you have a Nevermore.

#SET_PIN PIN=nevermore VALUE=1 # Turn on the nevermore

G1 X{x_wait} Y{y_wait} Z15 F9000 # Go to center of the bed

;G1 X{x_wait} Y{y_wait} Z30 F9000 # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error

M190 S{target_bed} # Set the target temp for the bed

SET_DISPLAY_TEXT MSG="Heatsoak: {target_chamber}c" # Display info on display

TEMPERATURE_WAIT SENSOR="temperature_sensor chamber" MINIMUM={target_chamber} # Waits for chamber temp

# If the bed temp is not over 90c, then skip the heatsoak and just heat up to set temp with a 5 min soak

{% else %}

SET_DISPLAY_TEXT MSG="Bed: {target_bed}c" # Display info on display

STATUS_HEATING # Set LEDs to heating-mode

G1 X{x_wait} Y{y_wait} Z15 F9000 # Go to center of the bed

;G1 X{x_wait} Y{y_wait} Z30 F9000 # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error

M190 S{target_bed} # Set the target temp for the bed

SET_DISPLAY_TEXT MSG="Soak for 5 min" # Display info on display

G4 P300000 # Wait 5 min for the bedtemp to stabilize

{% endif %}

# Heat hotend to 150c. This helps with getting a correct Z-home.

SET_DISPLAY_TEXT MSG="Hotend: 150c" # Display info on display

M109 S150 # Heat hotend to 150c

## Uncomment for Beacon contact (2 of 4 for beacon contact)

#G28 Z METHOD=CONTACT CALIBRATE=1 # Calibrate z offset and beacon model

## Uncomment for Trident (Z_TILT_ADJUST)

#SET_DISPLAY_TEXT MSG="Leveling" # Display info on display

#STATUS_LEVELING # Set LEDs to leveling-mode

#Z_TILT_ADJUST # Level the printer via Z_TILT_ADJUST

#G28 Z # Home Z again after Z_TILT_ADJUST

## Uncomment for V2.4 (Quad gantry level AKA QGL)

SET_DISPLAY_TEXT MSG="Lexyzveling" # Display info on display

STATUS_LEVELING # Set LEDs to leveling-mode

QUAD_GANTRY_LEVEL # Level the printer via QGL

G28 Z # Home Z again after QGL

## Uncomment for bed mesh (2 of 2 for bed mesh)

SET_DISPLAY_TEXT MSG="Bed mesh" # Display info on display

STATUS_MESHING # Set LEDs to bed mesh-mode

BED_MESH_CALIBRATE # Start the bed mesh (add ADAPTIVE=1) for adaptive bed mesh

## Uncomment for Beacon Contact (3 of 4 for beacon contact)

#G28 Z METHOD=CONTACT CALIBRATE=0 # Calibrate z offset only with hot nozzle

# Heat up the hotend up to target via data from slicer

SET_DISPLAY_TEXT MSG="Hotend: {target_extruder}c" # Display info on display

STATUS_HEATING # Set LEDs to heating-mode

G1 X{x_wait} Y{y_wait} Z15 F9000 # Go to center of the bed

;G1 X{x_wait} Y{y_wait} Z30 F9000 # Go to center of the bed 06/07/25 gfp chg Z15 to Z30 to avoid 'probe triggered prior' error

M107 # Turn off partcooling fan

M109 S{target_extruder} # Heat the hotend to set temp

## Uncomment for Beacon Contact (4 of 4 for beacon contact)

#SET_GCODE_OFFSET Z=0.06 # Add a little offset for hotend thermal expansion

# Get ready to print by doing a primeline and updating the LEDs

SET_DISPLAY_TEXT MSG="Printer goes brr" # Display info on display

STATUS_PRINTING # Set LEDs to printing-mode

G0 X{x_wait - 50} Y4 F10000 # Go to starting point

G0 Z0.4 # Raise Z to 0.4

G91 # Incremental positioning

G1 X100 E20 F1000 # Primeline

G90 # Absolute position

[gcode_macro PRINT_END]

# Use PRINT_END for the slicer ending script - please customise for your slicer of choice

gcode:

# safe anti-stringing move coords

{% set th = printer.toolhead %}

{% set x_safe = th.position.x + 20 * (1 if th.axis_maximum.x - th.position.x > 20 else -1) %}

{% set y_safe = th.position.y + 20 * (1 if th.axis_maximum.y - th.position.y > 20 else -1) %}

{% set z_safe = [th.position.z + 2, th.axis_maximum.z]|min %}

SAVE_GCODE_STATE NAME=STATE_PRINT_END

M400 ; wait for buffer to clear

G92 E0 ; zero the extruder

G1 E-5.0 F1800 ; retract filament

TURN_OFF_HEATERS

G90 ; absolute positioning

G0 X{x_safe} Y{y_safe} Z{z_safe} F20000 ; move nozzle to remove stringing

;G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 2} F3600 ; park nozzle at rear

G0 X{th.axis_maximum.x//2} Y{th.axis_maximum.y - 10} F3600 ; park nozzle at rear 06/17/25 gfp adj to avoid 'clunk' at end

M107 ; turn off fan

BED_MESH_CLEAR

RESTORE_GCODE_STATE NAME=STATE_PRINT_END

[gcode_macro CHOME]

description: Homes XYZ axis only if printer is in a non-homed state

gcode:

{% if "xyz" not in printer.toolhead.homed_axes %}

G28

{% endif %}

[gcode_macro FRONT]

description: Moves the toolhead to the front

gcode:

CHOME

{% set x_center = printer.toolhead.axis_maximum.x|float / 2.0 %}

{% set y_center = printer.toolhead.axis_maximum.y|float / 2.0 %}

G90

G1 X{x_center} Y10 F7800

[gcode_macro _LOGO_PENDING]

gcode:

SET_LED LED=rgb_light RED=0.15 GREEN=0.5 BLUE=0.75 WHITE=0 INDEX=1

[gcode_macro _LOGO_READY]

gcode:

SET_LED LED=rgb_light RED=0.99 GREEN=0.0 BLUE=0.0 WHITE=0 INDEX=1

[gcode_macro _LOGO_OFF]

gcode:

SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=1

[gcode_macro _HEADLIGHT_ON]

gcode:

SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=2 TRANSMIT=0

SET_LED LED=rgb_light RED=1 GREEN=1 BLUE=1 WHITE=1.0 INDEX=3

[gcode_macro _HEADLIGHT_OFF]

gcode:

SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=2 TRANSMIT=0

SET_LED LED=rgb_light RED=0 GREEN=0 BLUE=0 WHITE=0 INDEX=3

[gcode_macro UNLOAD_FILAMENT]

description: Unloads filament from toolhead

gcode:

{% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}

{% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}

{% set CURRENT_TARGET = printer.extruder.target|float %}

CHOME

G91 ; relative positioning

G1 Z20 ; move nozzle upwards

FRONT ; move the toolhead to the front

{% if EXTRUDER_TEMP != 0 %}

;_LOGO_PENDING

STATUS_HEATING ;06/07/25 gfp chg to something that works

SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}"

{% if CURRENT_TARGET < EXTRUDER_TEMP %}

M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot

{% endif %}

TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach

{% endif %}

;_LOGO_READY

STATUS_READY ;06/07/25 gfp chg to something that works

SET_DISPLAY_TEXT MSG="Starting unload"

M83 ; set extruder to relative mode

G1 E10 F300 ; extrude a little to soften tip

G1 E-8 F3600 ; quickly retract a small amount to elimate stringing

G4 P200 ; pause for a short amount of time

G1 E-50 F400 ; retract slowly the rest of the way

G1 E-20 F300

M400 ; wait for moves to finish

M117 Unload Complete!

;_LOGO_OFF

STATUS_OFF ;06/07/25 gfp chg to something that works

SET_DISPLAY_TEXT MSG="Unload Complete"

[gcode_macro LOAD_FILAMENT]

description: Loads new filament into toolhead

gcode:

{% set EXTRUDER_TEMP = params.TEMP|default(230)|int %}

{% set MIN_TEMP = params.TEMP|default(230)|float * 0.98 %}

{% set CURRENT_TARGET = printer.extruder.target|float %}

FRONT ; move the toolhead to the front

{% if EXTRUDER_TEMP != 0 %}

;_LOGO_PENDING

STATUS_HEATING ;06/07/25 gfp chg to something that works

SET_DISPLAY_TEXT MSG="Heating to {EXTRUDER_TEMP}"

{% if CURRENT_TARGET < EXTRUDER_TEMP %}

M104 S{EXTRUDER_TEMP} ; only heat up if the current extruder is not already hot

{% endif %}

TEMPERATURE_WAIT SENSOR="extruder" MINIMUM={MIN_TEMP} ; wait for min extrude temp to reach

{% endif %}

;_LOGO_READY

STATUS_READY ;06/07/25 gfp chg to something that works

SET_DISPLAY_TEXT MSG="Starting unload"

; _HEADLIGHT_ON

M83 ; set extruder to relative mode

G1 E50 F300 ; extrude slowlyL

G1 E50 F300

M400 ; wait for moves to finish

M117 Load Complete!

;_LOGO_OFF

STATUS_OFF ;06/07/25 gfp chg to something that works

SET_DISPLAY_TEXT MSG="Unload Complete"

;_HEADLIGHT_OFF

;<---------------------- 06/17/25 gfp another try at color change using Ellis' macros ---------------------->

[pause_resume]

[gcode_macro PAUSE]

rename_existing: BASE_PAUSE

gcode:

# Parameters

{% set z = params.Z|default(10)|int %} ; z hop amount

{% if printer['pause_resume'].is_paused|int == 0 %}

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z} ; set z hop variable for reference in resume macro

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target} ; set hotend temp variable for reference in resume macro

;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0 ; disable filament sensor 06/17/25 gfp commented out

SAVE_GCODE_STATE NAME=PAUSE ; save current print position for resume

BASE_PAUSE ; pause print

{% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %} ; check that zhop doesn't exceed z max

G91 ; relative positioning

G1 Z{z} F900 ; raise Z up by z hop amount

{% else %}

{ action_respond_info("Pause zhop exceeds maximum Z height.") } ; if z max is exceeded, show message and set zhop value for resume to 0

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0

{% endif %}

G90 ; absolute positioning

G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000 ; park toolhead at front center

SAVE_GCODE_STATE NAME=PAUSEPARK ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)

M104 S0 ; turn off hotend

SET_IDLE_TIMEOUT TIMEOUT=43200 ; set timeout to 12 hours

{% endif %}

[gcode_macro M600]

;rename_existing: BASE_PAUSE

gcode:

# Parameters

{% set z = params.Z|default(10)|int %} ; z hop amount

{% if printer['pause_resume'].is_paused|int == 0 %}

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z} ; set z hop variable for reference in resume macro

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target} ; set hotend temp variable for reference in resume macro

;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0 ; disable filament sensor 06/17/25 gfp commented out

SAVE_GCODE_STATE NAME=PAUSE ; save current print position for resume

;BASE_PAUSE ; pause print

PAUSE ; pause print

{% if (printer.gcode_move.position.z + z) < printer.toolhead.axis_maximum.z %} ; check that zhop doesn't exceed z max

G91 ; relative positioning

G1 Z{z} F900 ; raise Z up by z hop amount

{% else %}

{ action_respond_info("Pause zhop exceeds maximum Z height.") } ; if z max is exceeded, show message and set zhop value for resume to 0

SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0

{% endif %}

G90 ; absolute positioning

G1 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+5} F6000 ; park toolhead at front center

SAVE_GCODE_STATE NAME=PAUSEPARK ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)

M104 S0 ; turn off hotend

SET_IDLE_TIMEOUT TIMEOUT=43200 ; set timeout to 12 hours

{% endif %}

[gcode_macro RESUME]

rename_existing: BASE_RESUME

variable_zhop: 0

variable_etemp: 0

gcode:

# Parameters

{% set e = params.E|default(2.5)|int %} ; hotend prime amount (in mm)

{% if printer['pause_resume'].is_paused|int == 1 %}

;SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=0 ; disable filament sensor 06/17/25 gfp commented out

#INITIAL_RGB ; reset LCD color

SET_IDLE_TIMEOUT TIMEOUT={printer.configfile.settings.idle_timeout.timeout} ; set timeout back to configured value

{% if etemp > 0 %}

M109 S{etemp|int} ; wait for hotend to heat back up

{% endif %}

RESTORE_GCODE_STATE NAME=PAUSEPARK MOVE=1 MOVE_SPEED=100 ; go back to parked position in case toolhead was moved during pause (otherwise the return zhop can error)

G91 ; relative positioning

M83 ; relative extruder positioning

{% if printer[printer.toolhead.extruder].temperature >= printer.configfile.settings.extruder.min_extrude_temp %}

G1 Z{zhop * -1} E{e} F900 ; prime nozzle by E, lower Z back down

{% else %}

G1 Z{zhop * -1} F900 ; lower Z back down without priming (just in case we are testing the macro with cold hotend)

{% endif %}

RESTORE_GCODE_STATE NAME=PAUSE MOVE=1 MOVE_SPEED=60 ; restore position

BASE_RESUME ; resume print

{% endif %}

#*# <---------------------- SAVE_CONFIG ---------------------->

#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

#*#

#*# [bed_mesh default]

#*# version = 1

#*# points =

#*# -0.018287, -0.007037, -0.005787, -0.023287, -0.037037

#*# 0.006713, 0.005463, 0.001713, 0.000463, -0.010787

#*# 0.004213, 0.001713, -0.002037, -0.000787, -0.002037

#*# 0.014213, 0.017963, 0.011713, 0.009213, 0.009213

#*# 0.021713, 0.016713, 0.007963, 0.009213, 0.007963

#*# x_count = 5

#*# y_count = 5

#*# mesh_x_pps = 2

#*# mesh_y_pps = 2

#*# algo = lagrange

#*# tension = 0.2

#*# min_x = 25.0

#*# max_x = 275.0

#*# min_y = 25.0

#*# max_y = 250.0

#*#

#*# [stepper_z]

#*# position_endstop = 0.820

#*#

#*# [probe]

#*# z_offset = 2.660

with this printer.cfg file I was able to get a nice, two-color print as shown below:

Stay tuned,

Frank

22 March 2026 Update:

27 March 2026 Update:

01 November 2025 Update:

02 November 2025 Update:

03 November 2025 Update:

07 November 2025 Update:

08 November 2025 Update:

10 November 2025 Update:

11 November 2025 Update:

12 November 2025 Update:

30 November 2025 Update:

03 December 2025 Update:

07 December 2025 Update:

01 November 2025 Update:

24 October 2025 Update:

02 October 2025 Update:

03 October 2025 Update:

05 October 2025 Update:

08 October 2025 Update:

Neopixel LED Woes:

Filament Load/Unload macros – and others?

16 October 2025 Update:

18 October 2025 Update:

19 October 2025 Update:

config_wt_dock.cfg:

config_no_dock.cfg:

printer.cfg

20 October 2025 Update:

28 October 2025 Update:

251029 Update:

30 October 2025 Update:

31 October 2025:

14 September 2025 Update:

15 September 2025 Update:

16 September 2025 Update:

17 September 2025 Update:

18 September 2022 Update:

19 September Update:

20 September 2025 Update:

23 September 2025 Update:

24 September 2025 Update:

25 September 2025 Update:

26 September Update:

28 September 2025 Update:

25 October 2025 Update:

26 October 2025 Update:

27 October 2025 Update:

6 May 2025 Update:

10 May 2025 Update:

11 May 2025 Update:

15 May 2025 Update:

A Word about West3D:

17 May 2025 Update:

04 June 2025 Update:

Linear Rail disaster recovery:

17 June 2025 Update:

Two-color prints using Voron/Klipper and Prusa Slicer: