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My Phantom not holding altitude

Discussion in 'Phantom 2 Vision + Discussion' started by daylott, Sep 22, 2014.

  1. daylott

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    Hi All

    Ive got a bit of a problem with my Phantom, it dose not seem to be holding its altitude very well it keep lowering down slowly it dose settle down after the battery has drained down a bit also it keep telling me its -600 ft this seems to change from -600 to +600 i have to restart it a couple of time and then it ok.

    [​IMG]
    [​IMG]
     
  2. flyNfrank

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    Calibrate the IMU, then the compass.

    Btw, do you have any mods done to the quad? If so what?
     
  3. daylott

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    hey thanks for the reply , Ive tried calibrating the IMU & compass and it don't help :( and nope no mods on my phantom
     
  4. flyNfrank

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    What is the IMU read out in each of the 3 sections?

    And what method do you use to calibrate the compass?
     
  5. daylott

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    i use the method thats in the book for calibrating the compass.

    here is the IMU read outs
    [​IMG]
     
  6. justin00

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    Probs not this seems you mention -600ft, but ~400ft isn't the limit on the "limits" page ?
     
  7. daylott

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    dont ask lol have no idea what is wrong with the thing :( think im going to throw the thing out the window so annoying :(
     
  8. GeoChan

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    Front window or back ,so i know were to stand :)
     
  9. daylott

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    don't think you would want to catch it i would throw it pretty hard lol :p
     
  10. daylott

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    so guys any ideas what wrong with my Phantom ? or do you thing i should send it to DJI or somthing.
     
  11. Panamon Creel

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    IMO it sounds like an barometric pressure sensor fault, you should contact DJI with this.
     
  12. paulajayne

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    Iffy connection? unplug and re-plug it.
     
  13. kxkraze

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    Sounds like a barometric altimeter malfunction. I'm still pretty new to this myself but maybe one of the veterans can chime in if that's a possibility.
     
  14. Panamon Creel

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    The barometric sensor is integrated into the Naza-M conroller, no connections to plug or unplug