Avoid Crash due to Compass Interference

Discussion in 'General Discussions' started by shegeek72, Jun 6, 2018.

  1. shegeek72

    shegeek72 Active Member

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    FYI - found this on the DJI forum (link):

    Tip To Help Avoid compass interference and crash.

    1/ Never calibrate Compass unless prompted to.

    2/ start AC leave until you receive enough gps lock ,

    3/ if you get Compass interference turn off AC and move to another location,
    without interference.

    4/ In bottom left hand corner on your map you will see small red triangle, check to make sure that this triangle is pointing in the same direction (heading) as your AC, this will show good compass on the ground.

    Raise AC to height of 8ft
    Hover for 20 seconds
    Fly forward 2ft
    Backward 2ft
    Left 2ft
    Right 2ft
    Up 2ft
    Down 2ft
    Yaw left
    Yaw right
    Each time returning to hover position
    If you have a good horizontal each time, you will then know you have good GPS good IMU and good Compass, and your ready to fly.

    This exercise takes less than 2 minutes and is worthwhile doing before every flight,

    [If this has already been posted there maybe some who haven't read it. -like me]
     
  2. Techandfitness

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    Very nice I will start doing for sure. What do you mean by good horizontal though?
     
  3. Rafa7

    Rafa7 Well-Known Member

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    Cool, this is what I do except that I add a 'landing' at the end of these steps.

    Note that even thought I do these steps every time I go fly it, that a couple of times (at least three times) the Spark has loss compass calibration after taking off again and the drone start to flight-away without command, which I then pull on controls to force it to land/crash land right away - not fun and scary!
     
  4. shegeek72

    shegeek72 Active Member

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    I'm not sure. Maybe ask on DJI forum?
     
  5. Spark 317

    Spark 317 Well-Known Member

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    Probably referring to the observation of the Spark being level while hovering and checking with Attitude indicator (map box) to ensure the blue background is level and not pitching up/down or left/right.
     
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  6. graywoulf

    graywoulf Well-Known Member

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    Thanks for posting this as I had not seen it. Good information.
     
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