Open Source AHRS project: giving away hardware

joerg Reisenweber joerg at
Sun May 11 07:08:58 CEST 2014

On Sat 10 May 2014 11:57:30 Pascal Gosselin wrote:
> calibrate 
> the compass via GPS track by an easy calibration or self-calibration 
> method

GPS doesn't offer any data to calibrate magnetometer from. 
magnetometer aka compass is about orientation of device, GPS is about position 
and movement vector. They are 100% unrelated.

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(alas the above page got scrapped due to resignation(!!), so here some 
supplementary links:)  (German)
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