MPU9250 heading is slowly drifting

[seandepagnier]

To be clear, this is an issue only with openplotter correct? Can you try the latest tinypilot image?

It's very possible the wrong rtimulib2 is being used or something is interfering with it.

It would be very useful if you can find the last version which worked. If a previous version worked it should be possible to find the problem using git-bisect.