I'm attempting to solve an issue with IMU readings from a new APM2 being used on a multirotor (hex).
I'm running APM firmware 2.5.3 Hexa and interacting through APM Planner 1.1.58.
The airframe is the 3DR Hexa set up per instructions with the power distribution board, sonar, and xBee.
Climate: outside, warm, and dry.
The platform had a couple test flights the day prior with no issues, now the artificial horizon is erratic, upon first connect/flight of the day.
I have not attempted a flight in this condition.
Things I've tried with no effect (more or less in order, restarting APM between logical steps):
After all these attempts I gathered this info:
I have an identical problem. Did you ever get this fixed?
I managed to fix this by doing a factory reset from the command line.
I found this problem reared its head again when I tried to configure the sonar/ofs from the mission planner. If I set the sonar up from the command line, the gyro behaved itself. At present (as I understand it) the OFS is not supported on the APM2. I've wire it up as per the manual but can't get it to enable. Waiting for the next major release :-(
I tried the factory reset as well with success, thanks so much.
I contacted DIY drones after my post sat unanswered for a while and they never truly got back to me until just after I tried your advice.