Calibration state in IMU_PLUS
(editing the whole post as I discovered the error in the original post)
I just realized that only the NDOF mode has calibration state, while the IMU_PLUS does not work (reading the signal will break connection with sensor).
1) Isn't it a bug given that IMU_PLUS still uses acc/gyro to get the sensor orientation?
I see that (after calibrating) if I disconnect using the mw_debug_disconnect, next reconnection the calibration is still at high accuracy, but with mw_debug_reset is not.
2) Is there a possibility to cache/store that calibration so after a reset or power on can be reused or should we avoid at all costs that the sensor runs out of battery and/or needs a reset?
3) If the sensor is kept powered on, let's say one week, moving in different environments, how does it affect to sensor fusion calibration? I am talking about magnetic interferences.
As a side question regarding calibration for "production mode":
4) How may "commercial" products (IMU-based motion capture suits) may be doing their calibration? I don't see any "move each of the 17 IMUs provided with the suit 0-45-90-135-etc... degrees in an axis and perform an 8 in the air" in their documentation.