A while ago I printed the parts for the Itty Bitty Double FLEX V2Extruder and picked up the hardware to make it... Finally got around to putting it all together and am now stuck...

I have the RAMBo board as my setup and cannot for the life of me get a working configuration to upload and get either extruder working.

Is there a good place to start? Or does someone already have the Rambo version of the firmware for this setup available for me to start working with?

Setup:
12" Makerfarm frame
IBDFlexV2 with E3Dv6 extruders.

Thanks in advance.
--PS