Compass Calibration Required

[Oso]

I didn't know that. I'm off to go check now!

I'm sort of surprised that little bit of info hasn't set off a storm of posts already.

 

[III% Streve]

But now the compass as we know has put more emphasis on the calibration.

Funny thing about that. My Android devices have a yellow question mark. My iPad doesn't. So are you trying to tell me that somehow the P3 is knowing that my android tablets need calibrated? I'm guessing not! So why is the is this not showing up on my iPad? Never power cycled my P3, and can move it anywhere. All 3 tablets can be force to show that calibration is needed, but still, only the Android devices have a yellow "?".

 

[ianwood]

The big difference being that the accelerometer and gyro (collectively the IMU) aren't vulnerable to external variables (except for temperature and voltage). Gravity, F=ma, and the Coriolis effect are pretty **** static!

The compass, on the other hand, operates in the very messy landscape of magnetism which has some primary global tendencies but is otherwise subject to all sorts of localized influence.