Open source Smoothieboard open PnP control board
Open source Smoothieboard open PnP control board

$90

ARM32 Lerdge-X and Lerdge-K Controller Board for 3D printer
ARM32 Lerdge-X and Lerdge-K Controller Board for 3D printer

$45

RDGduino Nano V3, UNO R3 or DUE R3
RDGduino Nano V3, UNO R3 or DUE R3

$5