MPU9250 heading is slowly drifting

[diyc235]

Yes you a get red dot train if you fiddle with rotation when you set the cube on each side. Eventually some of them turn green. After 30 seconds (?) the green dots turn to yellow and that means that the points have been added to to the calibration calculation. ( see https://openplotter.readthedocs.io/en/la...ation0.png ) after you have 6 yellow dots, one for each side of the cube the accel calibration is complete and you can then move on the next step, Alignment ( see the next section in that doc).  My compass is very stable now! Just need to figure out how to get the data in to the SK dash board.