I designed and built a printer with ~1 cuft build envelope, got myself an Arduino Mega2560 and RAMPS 1.4 board with 4988 stepper drivers and LCD/encoder/SD card module. Arduino is loaded with latest (?) Marlin firmware. Video of it moving here: http://www.rehorst.com/mrehorst/it's_alive.3gp When I connect the electronics to my computer, run the arduino IDE and open the serial port monitor, I cby the_digital_dentist - RAMPS Electronics