Hello, is there a clear guide anywhere on how to setup magnetometers the correct way?
I want to test a 3DR external mag. i attached it and checked that i2c sees it correctly with i2cdetect command, and it does.
I do the calibration of all 3 compasses (2 on board + external one) and i get all green numbers for all 3 magnetometers. The external one gets wayy lower numbers on calibration so i guess it would function better.
All this done, set the 3rd magnetometer to external and rot 180° roll.
After all configured and restarted no matter what i do, the system works ONLY if i enable compass one (i think the one integrated on the mpu). All other combinations give “bad compass health”.
All the calibration has been done away from building and from any source of interference.
What i reall do not understand it is why i can’t tell the unit to use mag 2 or mag 3 and disable 1.
Is there something else i need to do to have the magnetometers work?