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help please. motors won't start

Discussion in 'Phantom 2 Vision + Discussion' started by quadjam, Aug 3, 2014.

  1. quadjam

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    My brother brought his pv2+ to fly with mine and his motors won't start up. We set up the compass etc and all seems fine but when attempting to get the motors going we get 3 red flashes and than it goes back to green. We are both very new with our pv2+'s.


    Any ideas ?
     
  2. J Dot

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    Hook to PC ASSISTANT,
    Check your IMU readings:
    Gyroscope
    Accelerometer
    Compass
    Let us know your MOD VALUES?

    IMU= Inertial Measurement Unit
    ( takes readings from ( gyroscope, accelerometer, & compass )
    It takes the values and creates a MOD VALUE for each.

    MOD= MODUUS
    ( another term for absolute value )

    Basically goes like this:

    Gyroscope SHOULD BE : ( 0.0 - 1.5 )
    Accelerometer SHOULD BE : ( .98 - 1.02 )
    Compass SHOULD BE : ( 750 - 2250 )
    If any numbers above are OFF, perform a ADVANCED IMU CALIBRATION.
    Also run a Tx ( controller ) calibration while you are still in PC ASSISTANT.
    Do a FRESH COMPASS CALIBRATION before first flight! All should be well.

    If for some reason your compass IS WAY WAY OFF ( like in the negative numbers )
    You'll need to do a compass RESET .
    How to reset compass below:
    http://youtu.be/kCT1rRE_UIg

    Take care, Fly safe!
     
  3. DBS

    DBS

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    Heed the advice above ... Three red flashes indicates "Not stationary or sensor bias too big"

    J Dot is on the right track... time to check those numbers and do advanced IMU calibration.
     
  4. quadjam

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    Thanks I will post the results.
     
  5. quadjam

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    Did an advanced calibration and good to go. He's flying again and all smiles. Thank you very much for helping out us noobs :)
     
  6. J Dot

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    Glad to help,
    Keep em flying high!

    Take care, Fly safe!
     
  7. Mako79

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  8. DBS

    DBS

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    Don't ya just love a happy ending?
     
  9. quadjam

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    thanks for the help :}