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  • Phanivyas February 28, 2015 at 4:07am

    Calibrate your compass and do compass mot test. Everything should be within safe values. I had this issue earlier and cleared by doing the same.

  • Jaco February 27, 2015 at 10:27pm

    Hi Paul I am not sure if you got the error sorted out yet, but I encountered similar errors with my Iris?

    The DCM check runs by default on all Pixhawk boards and will trigger when the GPS implied heading and DCM’s estimated heading disagree by at least 60 degrees

    You can read more about this on ArduCopters web page: http://copter.ardupilot.com/wiki/configuration/ekf-inav-failsafe/

    or

    Go to http://copter.ardupilot.com web page, then go to “Advance Settings" and then click on "EKF/DCM Checks/Failsafes”

    Hope it helps.

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