How to retrieve high quality compass orientation (as in Google Maps)?

Question

All of the guides to getting compass orientation in Android I\'ve found have a bug: when you hold the phone in portrait mode and \"look\" above the horizon, the compass arrow tu

Answer 1

Compasses will give you what you want, but it's so noisy. It is noisy for 2 reasons, one of reason is, it is picking up, real noise, real signal. So, we live in an environment that's magnetically very noisy. So, this compasses, picking up everything that's magnetic. The other reason is that, it's not integrated, so it doesn't have benefit of dropping the frequency component. So, try to combine your compass with gyroscope data. This video will help you so much for using these sensors.

Some more details, you can combine accelerometers also. So in summary, Gyroscopes provide orientation, Accelerometers provide a correction due to gravity, and compasses provide a correction due to magnetic North.