OK. Got the Chameleon up and running on the Ender 3. The changes are working fine. The tips could use a little work, but so far I'm happy with the result. If I have any problems is with the first color. I used the mode 3 gcode generator, but I assume there there is something that needs to go in the startup gcode so that the printer and the chameleon each know where the filament is? Or to ask more clearly, does T0 need to be loaded into the Extruder on start or just be at the extruder? Do we start out on home?
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You only need to home the 3DChameleon before you start. You can optionally add that to your start GCode with a 7 pulse command.
The tool change GCode will automtically load the first filament needed (without trying to unload) and the all subsequent loads will unload the previous filament first.
Bill