This setup plugin is an add-on to Octoprint that allows for setup of the M3 through octoprint, as well as features to better control Octoprint and the Raspberry Pi
Marlin Firmware for MakerGear M3
This customized version of the Marlin Firmware targets the M3 3D Printer.
MakerGear maintains a fork of Octoprint. All new MakerGear M3s will target this repository for updates. You can find the original Octoprint repository here.