Cosmoneer Proto

The Cosmoneer Proto is the first hackable robotic spacecraft platform to use off the shelf components and the widely accepted Arduino interface to provide a fun, learning space-like environment. Space doesn’t get any closer than this! You can program and interact with basic spacecraft systems consisting of Command & Control, Power, Attitude Control and Communications all in a simulated zero gravity environment.

Still in it's infancy, the Cosmoneer Proto aims to bring the challenges of a spacecraft down to your desktop. Want to get involved? Visit the forums!
http://cosmospioneering.com/community/