We recently build new drone intended to lift camera package up to 5 kg, and try to test flight it for the first time yesterday. It had no payload and therefor had more power than necessary for its weight. We also forgot to calibrate hover throttle before. We launch in stabilized mode and everything seemed ok. Then we switch to hold mode and drone shot up in the air quickly, then started oscillating and becoming unstable. I think we probably kill the output eventually to prevent it from going out of control, but I hoping to get some feedback about one event in particular:
- When we switch into hold mode, it immediately pitch upwards. Is there a reason this would happen?
From the log, it look like the drone tuning might not be good since the command for pitch and roll is not being followed very good, even up to the point of switching into loiter/hold mode.
We fix everything (damage not too bad) but want to try and figure out the reason for such a crash in the first place. Could it just be bad tuning?
I see that the vehicle positions are lagging the commands quite a bit from the log.
Please let me know any tips or observations that might help get flying without this issue.
Log file is here: Log of Crash