after crashing into the sea, and losing one, I am trying to "understand" APM2.
Besides the compass mess. - I'd experienced something really strange a few times.
-I let it run on my workbench for hours, when I get back - the AHI is looping and/or rolling, the device have completely lost it's marbles. - see log.
The attached log is the last time it happened, - it's running ok for long time, then I move it - a little, at ( ~92% log) - then - shortly after it goes completely nuts. If it was flying - it would certainly crash.
This workbench is near a window, maximum change in temperature could be about 10 degrees (C) - not more.