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Compass direction

Posted by Peter Alexanderson on April 7, 2013 at 4:53am

Hi

I have have APM2.0 and sometimes when its windy he cant hold magnet course and change direction and stays there. I can get it back but its not very handy when I fly far from me and cant really see the direction. Can anyone tell me what's going on? I did calibration by book and I can make gps hold and it only seems to happen when its windy or when I put more weight on like camera total weight with camera is around 1kg without 400g.

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Replies

  • T3
    Richard Boyhan April 8, 2013 at 8:58am
    Sounds like you are getting electrical interface. The reason you see it when it's windy or when you add weight is becuase the motors have to run a bit faster. Try moving your APM away from your electrical wires. It does not have to be much, maybe just a cm will do.

    Randy has a way to test this, see below:
    You'll likely be able to perform a test like this one (https://www.youtube.com/watch?v=es0ADszvOEQ) in which I rev up the motors and check the effect on the compass heading as displayed in the HUD.
  • Peter Alexanderson April 7, 2013 at 10:49am

    It seems that if I force to turn the quadrocopter while it still on ground then he first tries to correct that but after some seconds that will become the new "position". Im I doing something wrong it havent been like this before.

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