MetaWear Tutorial Bug
Your sensor fusion tutorial is using NDOF mode to get the absolute orientation of the sensor and display it on 3D cube. The issue is that even if you call NDOF you are not getting absolute orientation but relative instead (I tested this on MMR without the vibrator). You can easily test this on your own but I can provide you a video and dataset. Also, @Laura when I say absolute orientation I mean orientation relative to MAGNETIC NORTH and not a random point. Google query absolute and relative orientation https://lmgtfy.com/?q=sensor+absolute+orientation
Comments
It is relative orientation.
According to this https://mbientlab.com/androiddocs/latest/sensor_fusion.html#configuration NDoF calculates absolute orientation from accelerometer, gyro, and magnetometer
You can calculate absolute orientation from a know start + relative orientation.
That's relative orientation with extra steps. Here is the definition of absolute orientation https://blog.endaq.com/quaternions-for-orientation (The absolute measurement provides a rotation relative to magnetic north)
@Laura You may consider adding giant red letters in the Product Details to state that NDoF is not working properly
The NDoF is working as intended; it is the one Bosch has created and is used by companies like Apple.
Did you confirm there was no magnetic interference?
Yes 100%.
@nekos,
What you check the BOSCH forums? I am curious.