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VanguardLH wrote:Occasionally when using google maps from my phone e.g. on a train, it will report "low accuracy" and request the figure-8 calibration, I think it can use the magnetometer better to sense the direction of travel?
The magnometer periodically requires re-calibration (the 3-D figure 8A magnetometer has nothing to do with GPS.
roll) to get compass readings correct.
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