I need help here. I am trying to tune a small racer vehicle on pixracer controller.
It exhibits OK behavior if not pushed. Despite all efforts it appears that some issue persists where in the position hold mode when it is pushed to go fast in the straight line with no additional input on throttle it suddenly causes a fly away with a maximum current given to motors, it causes sudden uncontrollable climb that i have to kill from the radio.
in the attached logs at mark 36 it is seen how current suddenly spikes up from normal in-flight level of 16-20A all the way to the max of 130A.
I tried to move compasses around, enable and disable external compass, re-calibrate all, use EKF3 , EKF2 - it changes a bit but overall still not good.
In the example provided vehicle uses internal compasses only. i see in the auto analysis it says mag filed went up to 4000. not sure what causes what anymore. it makes no sense to me - but may be somebody will see right away what logic looses its mind in there.
I also noticed in the straight line pos hold acceleration it starts to oscillate while in stable loiter it is very calm with almost no vibrations. soft props may be an issue here as well but even if it is vibrations it does not explain this crazy shoot out into the sky.
alt hold and stabilize do not have this issue. only in the position hold.