"O-kay. Issue found.ACRO_YAW_P was set to 45. I have no idea why. Highest possible value should be 10.MP didn't complain about writing such a value to the APM, or reading it from it.. it only complained about loading that value from a file.It still…"
I tried setting up my copter today for camera flying. 1.73 kg, 3S, MS2216-900kv motors, 11x4.5 HQprops, Arducopter 3.2.1. Autotune went fine. Flying is fine on roll and pitch. As soon as I yaw, even if just 10°, the entire copter destabilizes and…
"The APM never saw any sort of failsafe, so it can only be that your receiver switches to RTL on signal loss.. that's not recommended, btw. It's better to set up FS so that the throttle channel drops very low (~960) and activate radio failsafe on the…"
"Wrong compass is plenty of reason for it to go bonkers and crash. Also, your voltage drops pretty far, may want to look into your power supply to the APM.
No failsafe was triggered from what I can see."
"Vibrations are low, props are balanced.
The frame is rigid, it's a GFK frame with aluminium arms.
Motors are 900kv MS2216 on 11-12" props.. I don't think that qualifies as large prop/low kv.
It appears I have to set P/I to 0.1 or lower for autotune…"
"Your compass Z offset is very high, which implies you did the compass calibration inside near other magnetic fields, or have i.e. magnetic metal screws near your compass.
You have repeated errors that the actual position and calculated position…"
"Have you actually tried to get off the ground yet? While on the ground, unless it's perfectly level, it will attempt to level the quad and can not, since you are still on the ground. This is only an issue if it also happens while in a hover."