The Prime_M, _L, _R and _O are all now merged with QMK master. Many, many thanks to Mxblu and Andrew Heaston.
The files linked below are now considered irrelevant now that the majority of these PCBs have been added to QMK. I highly recommend utilizing config.qmk.fm and QMK toolbox to program these boards.
***The Prime_O uses an ATMEGA32U2 MCU. Be sure to target the correct MCU when flashing firmware***
***The Prime_M uses an ATMEGA32U2 MCU. Be sure to target the correct MCU when flashing firmware***
Prime_L_Teensy V3 (Final)