I installed my new Pixhawk earlier today. I configured everything like i did on the APM before.
I took my octo for a first flight to test all configurations, vibrations and params. as i switched to AltHold mode it hoovered for half a second and then shot straight up with nearly full throttle. After switching back to Stabilze immediately i was able to control it again.
I started to look for a topic here in the forum but only found some similar problem descriptions. i also read that this could happen due the missing foam over the baro on the APMs. i never had an issue with my APM 2.6 on the octo.
Tried it a second time with the same problems and a crash at the last 2 feet while landing (my fault)
Vibrations are in acceptable range.
Can someone help me with that?