I am having trouble with Altitude Hold - after switching on the copter continues to rise quickly. The problem began after transferring to a new frame although I went through the process of calibrating everything and seemed to run smoothly. Stabilize and Simple work just fine, I adjusted trim slightly to compensate for the copter to have a tendency to move to the left. When I switch to Altitude Hold the copter just keeps going straight up. If I bring the throttle down to full stop it doesn't respond. I've tested sonar and it seems to report fairly accurate results. I noticed in CLI when I do a test on altitude I get some fluctuating values, some are even negative. Is this normal? Any idea what's going on?
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What version code are you using?