Bwahaha! Finally!

It's not fully completely done yet, but my vision for it was to delay the extruder from starting so soon when the 3DC filament wasn't near it yet. My printer seems to not respond to G4 S well, so I change it to P instead. The G4 P15000 will be fine-tuned later after I work on this bug

also for your code, you need to not reset to extruder 0 first, and only switch to the exact next extruder you're using like this with no unneeded switches, here is the relevant code in my old code until the end of the tool change gcode:

M117 Loading Tool T{next_extruder} ; press the button to select the new extruder G0 X3 Y3 F2000 ; press the button {if next_extruder==0} G4 P500 ; dwell for .5 seconds - adjust this to match your machines single pulse time {endif} {if next_extruder==1} G4 P1000 ; dwell for 1.0 seconds - adjust this to match your machines two pulse time {endif} {if next_extruder==2} G4 P1500 ; dwell for 1.5 seconds - adjust this to match your machines three pulse time {endif}

{if next_extruder==3} G4 P2000 ; dwell for 2.0 seconds - adjust this to match your machines four pulse time {endif} G0 X-3 Y-3 ; back off the button {if previous_extruder>-1} ;if NOT first time running, wait longer for retraction too. G4 S5.5; adding extra time? James code {endif} G4 S4.5; wait for it to happen ; adjust this time to match the actual tool change time - subtract the time it takes to load for the last 1" into the extruder G0 E37 F1500 ; << ------- ADJUST THE E50 VALUE TO STOP IT RIGHT AFTER IT LOADS INTO THE STOCK EXTRUDER (50mm is the default) ; ADJUST THE F1500 TO MATCH THE SPEED OF THE FILAMENT FROM THE 3D CHAMELEON ; NOTE: This defaults should work, but you can always tune them to be perfect. G4 P3000 ; This is just a half second extra reloading time... just to make sure G92 E0 G90 ; move back to absolute mode M83 ; but make sure the extruder stays in relative ; reload filament all the way into extruder G92 E0 G0 E100 F2000 G92 E0 G0 E100 F2000 G92 E0 G0 E100 F2000 G92 E0 G0 E80 F2000 G92 E0 ;G0 E00 F2000 ; 25? <<<<<----------- EDIT THIS DISTANCE TO FINE TUNE THE FILAMENT LOADING TO STOP BLOBBING OR UNDEREXTRUSION ;G92 E0 M83 ; turn relative distances for the extruder M117 3D Chameleon Tool T{next_extruder}

but also for your code, definitely go with the gcode generator code as copy pasting mine blindly will likely just cause issues, only use mine to compare to for specific issues and use the generator code as the base to start with

Just compare it to our auto generated gcode... the 3DClippy code is replacing our Tip Shaping Gcode. But also, it looks like Jame's code is also using the Mk3 Mode 3 firmware... so it might not fully apply to your scenario unless you're running it in Mode 3.

Bill

tool change gcode? I have changed mine around so much since I last posted it, let me post my new stuff just in case. Keep in mind this is for using the 3dchameleon as the extruder, so don't use it if you're not using something else, (should only use this for reference too as I have a CR touch as well) and you'll need to check the distances too. for your question too, are you trying to color purge? or wipe off any dried/hanging filament off your nozzle? if you're blobbing you need to adjust the distances and I'd say to use a wipe tower to purge color bleeding, but I'd say before or after the very last section in this gcode where it loads the filament ; 3D CLIPPY TOOL CHANGE CODE ; Auto generated 3D Chameleon Tool Change GCode for PrusaSlicer - Chameleon As Extruder ;G0 E-5 F2000 ;retract before moving to avoid stringing ; retract now to the cutting point to avoid ooze ;G0 E-50 F6000 ;was 43 G0 E-55 F10000 ; go to holding position to unload the stock extruder G0 X220 Y210.5 F4000 G91 ; set motions to relative for the button presses ; new: ;going up 5 z ;G0 Z5 ; - 3D Chameleon Tool T{next_extruder} - ; unload extruder {previous_extruder} ; begin switch from extruder {previous_extruder} to extruder #{next_extruder} ; M117 Unloading Tool T[previous_extruder] M92 X8; set x steps per mm to a small value (very high torque) G92 X0 ; set to 0 so we have a lot of room to travel M117 Cutting ; cut off the filament tip ;G0 X138 F6000 ; pull tip of filament off ;G0 E-4 F6000 ;G0 X-138 F6000 ; cut off the filament tip G0 X310 F10000 ; quickly cut the filament strings off G0 X-310 F10000 ; ok... go back to normal position M117 Restoring M92 X80; restore x steps per mm to normal value G92 X220 ; restore original position M117 pulling and homing G0 E-2 F4000 ; pull filament off blade (this will pull off the tip if it didn't cut all the way through) G0 Y-10 F4000; move away from clips ;G28 X R0; home the x axis to reset the position; HOMING DISABLES MESH LEVELING!!! replacing with next line G90 ; switch to absolute mode G0 X0 F4000 ; move X gantry all the way to the left G91 ; switch back to relative mode G0 Y10 F4000 ; push off tip into ptfe tube G0 E5 F10000 G0 E-7 F10000 M117 retracting ; retract it back out of the extruder G0 E-100 F6000 G0 E-58 F6000 ; ok - out of extruder - press button to remove it all the way ; load extruder #{next_extruder} M117 Loading Tool T{next_extruder} ; always reset to extruder 0; why? Lets just use an if statement again {if next_extruder==0} G0 Y3 F4000 G4 P500 G0 Y-3 G4 S2 {endif} ; press the button for each extruder (1,2,3) {if next_extruder==1} G0 Y3 F4000 G4 P900 G0 Y-3 G4 S2 {endif} {if next_extruder==2} G0 Y3 F4000 G4 P1400 G0 Y-3 G4 S2 {endif} {if next_extruder==3} G0 Y3 F4000 G4 P1900 G0 Y-3 G4 S2 {endif} ; - 3DC Process Tool {next_extruder} - ; new: ;going down 5 z ;G0 Z-5 G90 M83 ; Move nozzle to X87 Y155 no fuck this G0 X105 Y210.5 F6000 G0 E100 F6000 G0 E100 F6000 G0 E27 F6000 ; one at a time was 19 G92 E0 M117 3D Chameleon Tool T{next_extruder}

I'm trying to extrude about 20mm of new filament into the nozzle and wipe it off before continuing the print. Thank you for uploading your previous gcode, so far my operation has been working (without using filament so far).

are you using prusaslicer? Just turn on the wipe tower, you can edit your purging volumes on the plater screen to get technical with how much filament is purged for certain color transitions (colors like white WILL need much more material purged than other colors, or black etc). after a bunch of transitions something that's not contained in a structure like the wipe tower or a purge bucket (much harder to make) will carry over into the print and potentially mess it up

that would be awesome! I have also added to Bill's code as well by implementing a wipe nozzle function that eliminates the need for a purge tower by taking the nozzle far right on the x-axis, purge, and cleaning it off on the brush.

Interesting! does that work with the 3dclippy as well?

I may have to mess around with this one. The print failed with this gcode and I received "Communication timeout while printing, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves." I'll use the one that you listed in the config profile and see if everything works regarding filament changes extruding with my extruder on the printer and not from 3DC

Yep. The BMGTest1 emf gcode failed and my latest tool change gcode that used some of it failed as well. Thanks James for your help.

that is needed to reverse the extruder direction for colors 3 and 4, you need to run that script in your own prusaslicer to get the 3rd and 4th colors to print correctly (not extruding in wrong direction)

interesting. I was able to print 3 and 4 fine. The issue that I'm having is that my print will stop after the 4th color change and stay idling until I turn the printer off manually. Someone mentioned on reddit that that they may have seen some end gcodes near the 50% mark of the gcode.

4th color change in order? or when changing to/from the 4th extruder? try different extruder orders in your tests if you haven't already. also very curious how you're printing 3 and 4 without a reversing script unless there's some new option I missed in prusaslicer or something

what issues are you having exactly? is the 4th filament messing it up or something, and yeah you can probably go without the purge block while testing you just need to see it change colors

Okay awesome thanks so much! I think that should be a good start for the next print. I will measure the filament length as well, I could be leaving more cut off than I think I am with the gcode. Will let you know how it all goes with the next post! also, if I wanted to expand to say, 8 colors, where do the two systems join together?

We have a 2 to 1 Y splitter that you'll get with the next kit.

Bill

Thanks! How are the extra colors controlled though? using a 3dc as my extruder right now so I'm just trying to picture it in my head. Would I need another extruder motor slot on my mainboard

can't post the .ini but can post a compressed .zip. just used chatgpt to change my tool change code and start code and haven't tested it yet but it looks accurate, will post the updated file if it's not right

Thank you James. I'll let you know if this works