I have a quad 450 with APM 2.5 (internal compass). I never fly with 2.9.x. Every flightmodes are ok, but loiter not (have toilet bowl effect). I run compassmot, then I tested compass_learn, … nothing helps.
Every ‘toilet bowl’ are the same (see attached picture):
- every ‘toilet bowl’ is counter clock
- every ‘toilet bowl’ start to back left
- every ‘toilet bowl’ increases the tilt and speed
- every ‘toilet bowl’ would end by crash
Simple mode is working great - therefore a compass works properly?
I checked log for vibration - they are about 3 - 4 ‘point’.
What can I do to get loiter mode working? I do not buy new GPS with external compass.