Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Compass failure

Discussion in 'Pro/Adv Discussion' started by Hycken, Mar 6, 2016.

  1. Hycken

    Joined:
    Mar 2, 2016
    Messages:
    18
    Likes Received:
    0
    i had several Compass failures yesterday when i was out flying, just shorter time bur several.

    anyone got a clue?
     
  2. Arcticm39

    Joined:
    Feb 16, 2016
    Messages:
    55
    Likes Received:
    12
    Location:
    Maui
    Without more detail description from you on flight condition, location, and environment - No, no clue.
     
  3. alokbhargava

    Joined:
    Sep 28, 2015
    Messages:
    5,144
    Likes Received:
    1,659
    Location:
    San Francisco, CA
    Did you face any issue during Calibration before taking off?
     
  4. EddieG

    Joined:
    Nov 6, 2015
    Messages:
    28
    Likes Received:
    7
    Have you done a calibration?

    I was having compass issues with my P3A and even after I calibrated and everything seemed to be fine, she fell from the sky without warning. DJI fixed it with no charge but still...I would keep an eye on it.

    And don't forget to check your compass sensors.
     
  5. Hycken

    Joined:
    Mar 2, 2016
    Messages:
    18
    Likes Received:
    0
    Yepp, need to do the Calibration 4 times before it succeeded


    Sent from my iPhone using PhantomPilots mobile app
     
  6. Hycken

    Joined:
    Mar 2, 2016
    Messages:
    18
    Likes Received:
    0
    Compass sensors? How do I check them


    Sent from my iPhone using PhantomPilots mobile app
     
  7. m0j0

    Joined:
    Dec 26, 2015
    Messages:
    1,533
    Likes Received:
    530
    You can check the compass readings in the go app. Look for the readings in the sensors menu.

    Also if you had to calibrate 4 times I'm thinking you may have introduced a bad calibration. I'm in the camp that says get a good calibration then don't mess with it unless there is a reason to mess with it.


    Sent from my iPad using PhantomPilots mobile app
     
  8. Meta4

    Meta4 Moderator
    Staff Member

    Joined:
    Jan 8, 2014
    Messages:
    7,747
    Likes Received:
    3,459
    You didn't have a compass failure at all.
    Your compass was working just fine and telling you that it detected an abnormal magnetic field.
    Probably because you were near a car, structural steel or (most common) you were on reinforced concrete.
    This is not a time or place to recalibrate your compass and if you do you can give yourself a real headache.
    The correct procedure is to move away from the steel that's causing the trouble.

    Since you recalibrated in a distorted magnetic field you need to go to a clear open area away from steel and recalibrate your compass properly.
    Then just leave it and don't recalibrate again unless you need to.

    A compass error IS NOT a compass failure.
    It's your compass warning you of a problem.
     
  9. Hycken

    Joined:
    Mar 2, 2016
    Messages:
    18
    Likes Received:
    0
    When this happens I totaly loses control over the drone and it starts to drift
     
  10. Meta4

    Meta4 Moderator
    Staff Member

    Joined:
    Jan 8, 2014
    Messages:
    7,747
    Likes Received:
    3,459
    Where did you do your compass calibration?

    If you are calibrating the compass in a bad area (and if it took 4 attempts that sounds like you were), when you fly away from the steel and into the normal magnetic field of the earth, your Phantom can't make sense of the data from the compass.
     
  11. Hycken

    Joined:
    Mar 2, 2016
    Messages:
    18
    Likes Received:
    0
    This is strange, everything happend in an open field, both the calibration and the flight....
     
  12. Meta4

    Meta4 Moderator
    Staff Member

    Joined:
    Jan 8, 2014
    Messages:
    7,747
    Likes Received:
    3,459
    Buried pipes or cables?
    Having to make 4 attempts to calibrate the compass is an indication that something is not right with the magnetic field where you are.
     
  13. Hycken

    Joined:
    Mar 2, 2016
    Messages:
    18
    Likes Received:
    0
    I have been flying in same spot for years and never had any problems with my Phantom 2, this was the first attemt with P3
     
  14. movius

    Joined:
    Jan 11, 2016
    Messages:
    153
    Likes Received:
    45
    There's one potential reason, different bird, different compass sensitivity perhaps. It's worth checking the compass calibration in a couple of different locations even if you don't fly. If there was some hidden cables etc that should sort that problem out. Hope it all works out for you.

    Sent from my SM-G920F using Tapatalk
     
    Hycken likes this.
  15. dizzy

    Joined:
    Jan 28, 2016
    Messages:
    18
    Likes Received:
    3
    I was told there was a meteor very close to earth, and was warned any gps gadget may encounter some problems, just a thought, there are apps out there which will give data on this type of interference.


    Sent from my iPad using PhantomPilots mobile app
     
  16. Meta4

    Meta4 Moderator
    Staff Member

    Joined:
    Jan 8, 2014
    Messages:
    7,747
    Likes Received:
    3,459
    No meteor will have any effect on your compass or GPS unless you are close enough to get a magnetic effect (maybe 10 metres - depending on the size) or your GPS unless it's so big it blocks your view of the sky.
    And if you were confusing meteors with solar flares (there are apps showing K-index), that also won't have any effect on your Phantom.
     
  17. dizzy

    Joined:
    Jan 28, 2016
    Messages:
    18
    Likes Received:
    3
    Good to know, still learning lol


    Sent from my iPad using PhantomPilots mobile app
     
  18. m0j0

    Joined:
    Dec 26, 2015
    Messages:
    1,533
    Likes Received:
    530
    There is another possibility.. You could have a good calibration. It could be where you are flying is causing the errors. Was this a new location?


    Phantom 3 Pro / iPad Air 2
     
  19. alokbhargava

    Joined:
    Sep 28, 2015
    Messages:
    5,144
    Likes Received:
    1,659
    Location:
    San Francisco, CA
    Either your calibration process is not correct or the location is bad. I have never seen 4 consecutive failures.
     
  20. Hycken

    Joined:
    Mar 2, 2016
    Messages:
    18
    Likes Received:
    0
    Everything ended up with the drone was send back to DJI, according to them it's a known problem with the compass


    Sent from my iPhone using PhantomPilots mobile app