GNSS 2 Compass need recalibration

Support GNSS
1

Dear Pavel,

After update the firmware to 3.4 rc-1, the GPS v2 is recognized by Pixhawk and I complete the calibration. However, when I put my machine outdoor, Mission Planner always prompt the compass need to re-calibrate. I try to re-calibrate (clear all white spots in the calibration screen and the offset for three compasses is in green color) several times but the problem still occurs.

My machine contains 3 compasses, one is internal, the second one is externally mount. The GPS v2 is mounted in a arm of the machine over 7cm above the arm. The cable is 50cm long.

I need to disable the compass in GPS v2 in Mission Planner to pass the pre-flight checking.

Please help

Best Regards,
Andy

2

Hi Andy,

Sorry about this, I suggest you to report this problem to the APM community.

3

Dear Pavel,

Thanks a lot, just think it is hardware or software problem

Best Regards,
Andy