Got into problem with my pixhawk and cannot find what happened.
I made a fly plan on MissionPlanner(V1.3.41). I have set the first waypoint as a takeoff point and its absolute altitude is 25 meters. But when I armed it and switch to “auto” mode, its altitude reached over 90 meters.Besides it seemed that it would go higher if I didn’t stop it! Finally I changed the mode to “loiter” and made it come to the height I planned by operating remote controller. My firmware version is Arducopter V3.3.3. Here is my bin file for this flight!
How much minus and plus altitude, please let me know altitude fluctuations approximately range.
If the range is in many meters than there is sensor problem of FC which is hardware problem. In this condition, your copter automatically hugely gain and loss altitude out of your control.
If the range is approximately within 1 meter than this is normal.
Also check proper power to FC, by replacing power module and check altitude at ground level.