I put together a quick video on how I easily determined the orientation of the external compass

HI all
I was struggling to get my ublox neo-8mn to calibrate correctly using the mission planner. I read online that the neo8mn should be 180 roll in the configuration but I just couldn’t get it to work, so in a flash of inspiration I thought why not find out the live values for X,Y and Z on the internal compass, as that’s a known good, and check those same values for the external. So I put together a video so I hope it helps someone.