Dual Drive Extruder for Prusa Mini
Description
This is a remix of MK3S Extruder for Prusa Mini by Djkirkendall (https://www.thingiverse.com/thing:4761746). I've added a PC4-M10 on the FS-cover. I noticed the thread was not big enough. I just edited it. Sorry for those who already printed it, I uploaded the edited FS-cover only! Don't tell me about the gear reduction…..I like the dual drive better for its reliability. Will update soon with a full R6 extruder…..original file was not provided as STEP by the owner. Currently fighting those STL mesh file. Print with 20% infill, grid and 3 shells. Some support is recommended for 2 objects as per picture. When using firmware 4.3.3 or later, proceed this way to adjust the e-steps value and reverse extruder direction: Go to LCD Menu -> Settings -> HW settings -> then long-press the knob. Similarly to the MK3S+, a new “Experimental” submenu will appear on the screen. Scroll down to "Extruder steps": Adjust value to 140. Scroll down to "Extruder dir": Change value to "wrong". Don't forget to Save before exiting the menu. Finally, if you wanna use the filament sensor: 1- You need to flash a custom firmware. For this to work, you must cut/break the appendix on the board as per https://help.prusa3d.com/en/article/flashing-custom-firmware-mini_14 BE AWARE, THIS WILL VOID THE BOARD WARRANTY! You can download Version 4.3.4 of the custom firmware here: https://github.com/CybergNetwork/Prusa-Firmware 2- You need to invert black and red wire. Watch following video from 4:05 to 4:55: https://www.youtube.com/watch?v=XU2iKMSoPFc
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