I get that all of the time.
What firmware are you using? What GPS? are you using the external compass?
I am using ardurover latest with a Ublox 7n gps. If I am inside I get a GPS lock but still get the bad AHRS error message in MP. When I am outside with clear sky view the bad AHRS warning goes away.
If you haven’t already, put your vehicle outside with a clear view to the sky, meaning no overhead structure, clouds are ok, and see if you get better results?
I can’t even get passed the accelerometers initial calibration! I am using octocopter firmware, latest from the mission planner. I tried others too, but they all fail.
Yes using an external compass/gps module that it came with and using USB to calibrate.
Something is not right as it has just calibrated correctly, but keeps telling me the RC has not been calibrated, even when it has. Using just the spektrum remote receiver seemed to work, seems it does not like the ppm encoder for some reason.