Reply To: algorithm for “Processed” data

[Caleb Chamberlain]

After the magnetometer is calibrated, the processed data should be normalized so that the 3-element mag vector is unit-norm regardless of the orientation. If the processed data is not unit-norm, then it reflects poor calibration or the possible presence of nearby objects distorting the magnetic field.

Also note that the processed mag data registers (addresses 0x69, 0x6A, and 0x6B) are 32-bit floating-point values, while the raw data is stored as 16-bit integers.