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Tilt compensation compass (mpu9250/6500)
#5
I found something quite confusing last night:

If I hold the sensor 'right side up' (as I see it) and calibrate, the broad side of the sensor board is pointing forward (x-axis), and tilt compensation seems to work reasonably OK.
If I flip the thing so its upside down, the narrow side becomes the forward pointing side, and tilt compensation gets wacky, really bad tilting to starboard, ok-ish tilting to port.

What gives with the 90 degree rotation of the x-axis? This seems to indicate that tilt compensation is less well performed when pitching (as opposed to heeling).Understandable, as heel is normally much stringer than trim but still- huh???

Anyone with a better understanding of PyPilot that can elaborate? Thanks again!
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RE: Tilt compensation compass (mpu9250/6500) - by fishy - 2021-07-30, 12:02 PM

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