February 22, 2011
about 4 years ago
Magnetometer and Accelerometer MUST be calibrated first (i don’t know about Gyro) Calibration is calculating BIAS and GAIN, that is a Matrix and a Vector of parameters, to “sphericize” and translate the ellipsoid of the RAW value you get from the board.
You can find some info in this PDF (ST):
The following code if for Matlab, but works also with Octave (free)
THIS IS NOT my code, but i don’t remember the link of
the author (sorry) :
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