Compass Redundancy Error

[mikeGR]

So I am at the beach and was getting ready to fly. Mavic sits on its landing pad, locked in 17 satellites and while I'm doing the last pre-flight checks the app throws a compass redundancy error-switched to compass no1. I checked the compasses and they do dance around having a 30 degrees difference between them, no idea why. I flew from another beach 2km from here yesterday and had no issues whatsoever (even in sports mode). If I were anywhere else I would have guessed it's some sort of interference but here it looks highly unlikely.

Any guesses? I wouldn't want to calibrate the compass since I see no reason why it would have lost its proper calibration over the course of one day.

 

[mikeGR]

So I am at the beach and was getting ready to fly. Mavic sits on its landing pad, locked in 17 satellites and while I'm doing the last pre-flight checks the app throws a compass redundancy error-switched to compass no1. I checked the compasses and they do dance around having a 30 degrees difference between them, no idea why. I flew from another beach 2km from here yesterday and had no issues whatsoever (even in sports mode). If I were anywhere else I would have guessed it's some sort of interference but here it looks highly unlikely.

Any guesses? I wouldn't want to calibrate the compass since I see no reason why it would have lost its proper calibration over the course of one day.

Update: I was confused thinking that compass interference is measured in degrees, sorry for the above. Having moved to a different location , I can see that interference value varies a lot for each compass, it isn't stable over time. Is this normal? Also compass 2 on most times has higher interference compared to compass 1. I'm always on the green though, would you guys just ignore the warning and fly?

 

[Enigma]

My compass 2 also shows slightly more green than number 1.
I have not had any issues.

 

[mikeGR]

My compass 2 also shows slightly more green than number 1.
I have not had any issues.

Do the interference readings also fluctuate over time, even if the drone is just turned on and waiting but engines not running?

 

[Enigma]

Do the interference readings also fluctuate over time, even if the drone is just turned on and waiting but engines not running?

Unfortunately, I can not comment on that, because I don't check the readings regularly enough to say for certain.