1. animau

    animau New Member

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    Jun 20, 2012
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    I've try to find a post on that but didn't find one...

    When i put on Gps mode my F550 is start doing circle bigger and bigger...
    What causing this?
    and Btw i did a compass calibration and everything work well

    tks
     
  2. seagee

    seagee New Member

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    Location:
    New Zealand
    Are you located in northern or southern hemisphere?
     
  3. animau

    animau New Member

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    northern, i'm from montreal canada
    Why?
     
  4. Skinwalk3r

    Skinwalk3r New Member

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    the earth has a true north and a magnetic north. magnetic north is what compasses are sensitive to. depending on where you are on the continent (or world for that matter) you will have to make corrections for variations in the earths magnetic field. you may find that you may have to offset the "north" of the compass a few degrees(or more) to the left or right.
     
  5. yeehaanow

    yeehaanow New Member

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    Jan 11, 2012
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    Sounds like TBE, (toilet bowl effect) It's related to the position settings (Z setting mostly) or you need to turn the GPS slightly to compensate.
     
  6. seagee

    seagee New Member

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    Location:
    New Zealand
    I've found in New Zealand, adjusting for magnetic declination has had a significant and positive effect on my GPS capability for both Naza and Wookong. Based on your location as a starting point try rotating the GPS antenna 14 degrees anti-clockwise. You can use a protractor to measure the offset from the Naza Main Controller center line.
     
  7. Tahoe Ed

    Tahoe Ed Active Member

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    I am in Las Vegas and my magnetic declination is 12 degrees. I fly my WKM and my Naza GPS pointing straight forward and have not experience TBE. I understand that my experience is not indicative of someone else's. If you are having problems with TBE I would try and rotate the GPS. I had a user pm me and he was able to completely eliminate his with about 15 degrees of rotation. Just another tool if you are having problems.
     
  8. animau

    animau New Member

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    tks guys! i will try this tomorow!!
     
  9. thehatguy

    thehatguy New Member

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    Location:
    The Colony, TX
  10. chinwai

    chinwai New Member

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    Jun 2, 2012
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    i emailed dji regarding thesame problem with my naza gps system..according to them if my system goes into toilet bowl turning clockwise i need to reposition my gps about 10 to 20 degrees to the left and if its turning counter clockwise i need to turn my gps 10-20 degrees to the right...after repositioning the gps should be recalibrated again........................................now my naza gps works like a charm...thats all folks
     
  11. animau

    animau New Member

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    Yep! u right ! just done that and it rock solid!!!! :nevreness:

     
  12. monster900

    monster900 New Member

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    Jan 12, 2012
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    Thanks for link it's real good, i try also my Compass on Android phone and it give me the same result of your link, so everybody can calculate Magnetic Declination only with cell phone ;-)
     
  13. OICU812

    OICU812 New Member

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    Jan 4, 2013
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    1


    Ok looking from underneath quad or pretending to be above when observing the movement of the TBE?? Want to clarify obviously its reverse of one another
     

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