Autopilot is an open-source firmmare for autonomous model aircraft:
We're building a system for autonomous aerial vehicles for the hobbiest. The entire design and all software is available as Free Software, licensed under the GPL. The goal is to produce a do-it-yourself autopilot kit that anyone can build and fly.
Our initial target is 60 sized model helicopters and less than $500 in parts. So far we've been very successful — one of our 2.2 boards has hovered a Concept 60 for several minutes at a time under attitude command from the safety pilot. It isn't totally autonomous yet, but the demonstration has proven that the inertial measurement unit (IMU) and Kalman filter approach work well.
(Thanks, Ernie!)
