MPU9250 heading is slowly drifting

[Opie91]

I have been able to reproduce your issue. Please follow this to calibrate: http://pypilot.org/wiki/doku.php?id=calibration

I'm having the exact same issue. Unable to get past the accelerometer calibration. The sphere seems to reset it self after all points are taken in but the calibration is not reset.

Have tried two different sensors that have worked in the past. Do not know if this matters but using MPU6050.