Compass Calibration or lack of

[iampete (Peter Hall)]

On-board calibration is more accurate than the old live calibration, you still have to rotate the vehicle in all axis you should then see the bar fill up.

If your vehicle its to big to do this you could try the new in flight calabration see

Testers needed for in-flight compass learning

[image] I would like some testers for a new ArduPilot feature - in-flight compass learning. This is a feature that was originally developed for the SkyViper quadcopter, but can work with a wide range of vehicles (planes, copters, helicopters, rovers, boats etc). It avoids the need to do a compass calibration dance, which is particularly useful for large vehicles. The pull request is here: I am also happy to provide pre-built binaries if you let me know in the comments below what flight c…