ArduPilot
ArduPilot is a full-featured autopilot based on the Arduino open-source hardware platform. It uses infraredย� sensors for stabilization and GPS for navigation.With a handful of servos, battery pack, GPS unit, and the Arduino programmer you can build your own unmanned aerial vehicle (UAV) drone. Itโ€™s an absolutely outstanding project complete with a detailed.
   ArduPilot
at diydrones.com