Just been paid tuning a large quad copter with pixhack v5 and have come across a strange problem that I only noticed after tuning and trying position mode.
The compass can switch 180 degrees. It’s only happened once in the air nearly causing a crash but I switched to stabilised.
Its happening all the time now though (I’m only flying in stabilised mode so I don’t lose control).
I take off yaw a complete circle and compass is fine. However once I land the onscreen compass drifts from good to 180 degrees wrong direction over about 30 seconds.
I’ve tried many 6 axis compass calibrations and the compass orientations are right in the parameters and physically on the machine.
Any ideas what I can do?