I'm trying to shake out the bugs in my drone and I came across a few issues. I have the MPU6000 scaling issue, so I'm not sure how much of this might be related to that problem.
1. Sometimes when I flip on my transmitter the throttle immediately gears up to about 80%. Maybe I'm not waiting long enough? It usually resolves after a bit of fooling around, but this is obviously a major safety issue. If the prop were on the plane I'd have probably already lost a plane.
2. In inverted position the rudder thrashes around violently when the plane rolls slightly to the right or left.
3. In the inverted position with the APM in stabilize mode the elevator is positioned to pitch the plane up. So stabilize mode apparently doesn't recognize inverted flight. In any case, doing a loop isn't the proper way to right an inverted plane. It should roll upright.
Any help or tips appreciated. I'm happy to dig into the code if someone can point me to the right section. I'm eager to fly using the APM, but I want to fix these problems, or at least understand them, first.
Replies
I got the 2.34 firmware, which fixes the scaling, and I still have the same odd behavior.
I also noticed the rudder thrashes when the plane is pointed straight up, which makes sense. Yawing over and rolling out is the right way to get out of that position.