Arducopter waggles on descent and crash

ArduCopter
1

Hi All.

I am looking for assistance to analyze flight logs of a crash. Copter was flying fine for many flights but when the battery got to 22v or less it had a very bad wobble on descent. I had to flick into manual flight mode and full throttle. On the last flight this did not recover the problem.

Help will be much appreciated.

Thanks

2

Copters do not fly on empty batteries, period.

Check that the voltage on your power module is correctly calibrated, activate voltage failsafes, setup battery voltage failsafes follow the tuning process instructions without skipping ANY step .

And next time provide a log file. No .bin file no cookie! :stuck_out_tongue_winking_eye: