I have an APM with 2540 IC running APM 2.12 in a skywalker with Hitec Auroa 9 RC. The hardware is extremely unstable, APM is very frequently losing all configuration, about every 3rd flight. I have to resetup each time.

Now I am trying to fly Auto mode (which I have done many times previously), but whenever I select either AUTO or RTL the APM goes to loiter mode for both settings. When I check it on the ground in both 'show settings' and 'test:modeselect" it shows normal (and I don't even have a loiter mode set up as an option.)

I have airspeed and magnetometer and xbee installed, but even when I remove any of these componenets, I have the unstable situation of having to reconfigure APM about every 3rd flight.

When in show settings mode, the CLI reports CCC… at the mode, see screenshots:

I have reset the board and reconfigured numerous times, but it never becomes stable and the loiter mode has not recently gone away.

I have been using mission planner for all setups, but going back in to set modes in CLI. This approach does not use the reset button, ( only erase?) Is powering down/disconnecting power an adequate sub for pressing reset? ( have also tried using the reset button but that did not help).





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  • I replaced the arduino board, oil pan, and airspeed sensor with another set (that I had available) and so far so good, but I have not tested extensively. Even if this does solve the problem, if anyone has ideas on why the other board would have instability problems please offer suggestions. Soldering? Something else?
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