CCNC 2015 Copyright Mark Benson etc etc
This is my Arduino Nano/Stepstick Eggbot/Shperebot/Polargraph control board.
This has been used sucessfully with a 3d printed Eggbot and Polargraph. Firmwares adapted for this board available in github.com/markjb.
Designed in Kicad and custom kicad libs included.