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P2V Compass Calibration. Sound right?

Discussion in 'Phantom 2 Vision Discussion' started by Pmcdn, Mar 18, 2014.

  1. Pmcdn

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    I have an ICD (implantable defibrillator) in my chest. I am wondering if it affects the compass calibration?

    I have been flying my P2V for a couple of months or so now without issue. I fly at a nearby park some, but mostly in front of my house out of the cup-de-sac.

    Up until today it's been flying nice and tight. I've successfully kept my Vision calibrated, but this morning I noticed it is doing a "drift" when I hover stationary and yaw. If I give it a quick, short yaw (about 90 degrees) it will remain on it's vertical axis. However, when I yaw more slowly it is like I am pushing the right stick a little and drift off about 20 feet.

    I re-calibrated and tried again getting the same thing. I fly in NAZA mode, FYI and decided to go back to regular Phantom mode. Same thing.

    When I plugged it in to my assistant app, everything looks good.

    Not a big deal while it's up high, but when I am coming in to land and need to maneuver a bit, it is a little nerve racking with nearby trees, etc.

    Thoughts?
     
  2. FSJ Guy

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    Re: Any Phantom/Vision Pilots with Pacemaker or ICD?

    You could always ask someone without a pacemaker to calibrate it for you and see if that makes a difference.

    All I know about pacemakers is that you can't weld anymore and you shouldn't get magnets near them.
     
  3. Pmcdn

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    Re: Any Phantom/Vision Pilots with Pacemaker or ICD?

    So, just to be clear, if everything else is working properly then the yaw drift should be compass calibration only?
     
  4. FSJ Guy

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    Re: Any Phantom/Vision Pilots with Pacemaker or ICD?

    I didn't say that. LOL!

    But if you want to be sure that your pacemaker isn't influencing the compass calibration, you could have someone else do it for you. That's all.

    I have no idea if a "bad" calibration is your problem or not. Sorry. :- (
     
  5. Pmcdn

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    Re: Any Phantom/Vision Pilots with Pacemaker or ICD?

    No no, I wasn't suggesting that you said that. I was just asking.

    I've calibrated a few times since I got it and until today, it's been rock solid in performance.

    Another question: if working properly and I yaw left or right, it should rotate tightly, right?
     
  6. FSJ Guy

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    Re: Any Phantom/Vision Pilots with Pacemaker or ICD?

    When yawing, the craft should just rotate. It shouldn't move vertically or horizontally. It should just spin.
     
  7. Pmcdn

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    OK. I did the advanced IMU calibration and then took the PV out to the park and calibrated the compass. I took off and held hover about 12 feet up and yawed around. It would turn and stick within about a 4 foot horizontal area. It no longer drifted way off to the side when I would yaw like before.

    With 10 or so satellites showing, is rotating within about 3 or 4 feet normal? In every other way it flew normal.

    Hoping I got it back to normal.
     
  8. Pull_Up

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    Yes, DJI spec is that with good satellite lock the aircraft should be able to hold position within a 2.5 metre range.