About this 3D model
Based on ATmega328. Designed to be used with GRBL-0.8 software. http://www.thingiverse.com/thing:128100 Should be used with theese stepper motor drivers: http://www.thingiverse.com/thing:129244 Provided design files are for Eagle CAD V6.4. Needs a FTDI UART Cable/5V Sparkfun FTDI Basic breakout to communicate with PC.