A great flying quad-copter:

I’m having some trouble with the MTK GPS and the winter weather in St. Louis, but otherwise, this is the best flying copter I’ve ever had. It has a GPS/barometric pressure/sonar rangefinder  driven autopilot that will be able to fly waypoints and come home on command. I’m working now on a tilt/pan video camera transmitted to the ground and commands on a bidirectional data link (XBEE). Highly recommended and available at: DIY Drones.

192.168.18.125
18.220.173.216