Discussions

I've been test flying my quad, running AP 3.0 on an APM2.5, F450 frame, and for some reason, the altitude, as recorded by mission planner, keeps creeping up. Using altitude hold indoors without a GPS fix works really well, but when I leave the on the floor, no props spinning, MP thinks it is slowly rising. I've tried it both with a sonar and without, and I get the same result. For the sonar test, I elevated it about 5 inches off the ground. I've attached some tlogs, the first one is without sonar, and the second and third are with sonar. I'm not worried about altitude hold, but when I enter auto mode, the quad often descends from WP to WP, eventually crashing into the ground. Any advice would be great!

Marshall

2013-07-02 10-33-58.tlog

2013-07-02 11-03-52.tlog

2013-07-02 11-11-37.tlog