I need some advice please.
I've got the APM 2.6 with an external compass and the offsets are always >400 on all axis (X,Y,Z) no matter where I place it on the frame, away from metals and close to metals. I've done the live calibration at least 20 times now in every position I've tried the offset readings are all extremely high. I get even higher readings when it is closer to the metal parts of the quad.
Is my compass faulty? I may have left a magnetized screwdriver head close to the compass when I was initially assembling it. Is this permanently throwing the compass readings off? Is there a fix for this?