First of all, thanks for making GREAT tutorial “Building the cheapest possible Prusa i3 MK2”. I’m at 90% building process. I only need to wire up everything with Arduino and RAMPS.
Question is: What firmware to put on arduino?
Marlin latest stable (1.1.8): https://github.com/MarlinFirmware/Marlin
Marlin from tutorial (2017-03-19, that’s version 1.1.0-RC8): https://github.com/MarlinFirmware/Marlin/tree/1.1.0-RC8
Prusa MK2 fork of Merlin: https://github.com/prusa3d/Prusa-Firmware