Here is another autonomous flight. The UAV just tries to hold a fixed position.
Remember that this UAV is 100% autonomous with its own sensors (sonars + IMU + magneto).
The autonomous part of the flight begins at 0'09" and ends at 2'20".
I plan to take part to the IMAV2011 competition with it.
Do not hesitate to ask me question about it.
Leon - French Hobbyist.