Compass calibration: manual vs. DJI GO 4 App conflict

[lomposlapos]

Mavic 2 Pro/Zoom User Manual, © 2019
page 65-66:
"Hold the aircraft vertically, with its nose pointing downward, and rotate it 360 degrees around a vertical axis."

DJI GO 4 app shows a different aircraft attitude/rotation axis instead.

Which one is correct?

 

[Meta4]

Which one is correct?

Both/either.
It doesn't matter.

 

[msinger]

I do nose down, but either will technically work.

 

[paulatkin73]

Good calibration needs complete 360deg rotation around each of 3 axles.

 

[sar104]

Good calibration needs complete 360deg rotation around each of 3 axles.

It only requires 2 orientations to ensure that none of the three magnetometers is orthogonal to the magnetic field vector.

 

[paulatkin73]

It only requires 2 orientations to ensure that none of the three magnetometers is orthogonal to the magnetic field vector.

It is more complex than just an orientation check, to get proper mag offsets it needs rotation on all axles. At least it is how freeware code is written for compasses.

 

[sar104]

It is more complex than just an orientation check, to get proper mag offsets it needs rotation on all axles. At least it is how freeware code is written for compasses.

I didn't say it was an orientation check, I said that the process needs to rotate all three magnetometers not parallel to the external field. That's all that is required to separate the internal and external fields, and presumably why the DJI calibration process rotates around two orthogonal axes, not three orthogonal axes.