Navio 2 magnetic field

Discussion in 'First Build' started by RcHexy1991, Apr 23, 2018.

  1. RcHexy1991

    RcHexy1991 Well-Known Member

    Hexcaopter instability due to magnetic field interference. Navio 2 flight controller. Any suggestions?
     
  2. RENOV8R

    RENOV8R Well-Known Member

    Care to elaborate? Is this a warning you're getting and wanting to know why? Or are you getting MI and wanting to know what to do about it? "Cuz my first response would be try somewhere else...
     
    GJH105775 likes this.
  3. GJH105775

    GJH105775 Avid Linux User, and U.S. Air Force 1C6 Moderator

    Is the compass mounted near an ESC or motor? If you have 4-in-1 ESCs you may need an external compass if you can't add more separation.
     
  4. RcHexy1991

    RcHexy1991 Well-Known Member

    I get this warning on ardupilot and the drone kinda goes crazy. It's a tarot hexacopter with a navio flight controller. The power distribution hub is about 4 inches away and is a tarot 6 in 1 power distribution hub.
     
  5. RcHexy1991

    RcHexy1991 Well-Known Member

    Yes I want to know why. My drone is very unpredictable and I believe this is why
     
  6. GJH105775

    GJH105775 Avid Linux User, and U.S. Air Force 1C6 Moderator

    Could be a bad sensor as well if it is not EMI. I would try the external sensor if possible.
     
  7. RcHexy1991

    RcHexy1991 Well-Known Member

    this is a picture of the drone from the top if this helps at all.
     

    Attached Files:

  8. GJH105775

    GJH105775 Avid Linux User, and U.S. Air Force 1C6 Moderator

    Move the sensor out onto the arms if possible.
     
  9. RcHexy1991

    RcHexy1991 Well-Known Member

    so move the gps?
     
    GJH105775 likes this.
  10. GJH105775

    GJH105775 Avid Linux User, and U.S. Air Force 1C6 Moderator

    Yes, it is probably a GPS/Magnometer combination so moving it away from the ESCs should help.
     
    Gyro Doctor likes this.
  11. Gyro Doctor

    Gyro Doctor Electronics Tech for over 45 years

    :rolleyes: ... Lotsa real estate on THAT bird ! ... :p
     
  12. RcHexy1991

    RcHexy1991 Well-Known Member

    but my ESCs are below the motors which are at the end of the arms. The GPS is not close to the ESCs.
     
    Last edited: Apr 26, 2018
  13. Gyro Doctor

    Gyro Doctor Electronics Tech for over 45 years

    Probably noise on the power lines then.
    Does your PDB have filtering ?
    In any case I'd slap a low ESR cap in there, say 1000 mf
    on the power lines to the GPS/Mag or FC and see if that solves it ;)
     
    GJH105775 likes this.
  14. RcHexy1991

    RcHexy1991 Well-Known Member

    upload_2018-4-25_19-46-31.png
    this is my PDB. it came with the frame.
     
  15. Gyro Doctor

    Gyro Doctor Electronics Tech for over 45 years

    Last edited: Apr 27, 2018
    RcHexy1991 likes this.

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