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Warning

Warning!
This is the first alpha version of a rather complicated feature!
This will try to calibrate your mag, upload the data to the flight controller and make the persistent. Do not try this in a production environment, meaning: If you want to fly, do not use this as your sole possibility to do a mag calibration.

Also, read this before using an AuxMag: Aux Mag Setup and Calibration

Here's also a nice Video on how to set the Orientation of you Aux Mag: https://www.youtube.com/watch?v=qLsd4O75N9o

Info

Use your GCS to backup your mag calibration data. You can simply write down the following values:

RevoCalibration => mag_bias => X,Y,Z
RevoCalibration => mag_transform => r0c0, r1c1, r2c2
AuxMagSettings => mag_bias => X,Y,Z
AuxMagSettings => mag_transform => r0c0, r1c1, r2c2

If the app messes up your calibration, put those values back with the GCS to revert to your previous settings (you can do this with the app's object browser).

Backup the values for AuxMag even if you do not use AuxMag.

You can also use the local settings () to use the Backup-Feature, which is of course in testing state:


The Compass Calibration uses a 3D representation of the magnetic field your magnetometer measures.


  1. Wait for a connection to your flight controller
  2. Press the Compass icon to start the sampling. 
  3. Collect at least 700 samples by turning around the flight controller in all directions. 
  4. After collecting at least 700 samples, press the compass button again to calculate the fit and upload it to the flight controller. 
  5. Fingers crossed.