Hello misterMark,
Thanks for your feedback.
1.You need do full calibration for each sensor, compensate both hard iron and soft iron effect, this already including sensor zero B offset; 2.For Z axis, center of the sensor; 3.Question for magnetic field distribution of magnet , not liner, right? 4.If use sqrt(x^2+y62+z^2), because bmm150 is very small, normally we can look the measurement position is center of BMM150. What's the accuracy from your side?
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