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Interference from nearby metal objects

Discussion in 'Pro/Adv Discussion' started by Mainshipper, Jul 24, 2016.

  1. Mainshipper

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    I was having fits yesterday when I could not get my P3P to initialize a Litchi waypoint mission with warnings about GPS (had 17 acquired at the time) and compass errors. I was on a dock where there were long steel pipes running along the wall where boats tie up. I was maybe 5-10' from them and once I moved to a different area where the pipes were not present the issue went away and the mission went without a hitch. What is the relationship between the compass, GPS, and external metallic interference that would cause this?
     
  2. msinger

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    The compass becomes confused when it's close to metallic magnetic objects. It's best to always keep your Phantom clear of them.
     
  3. Mainshipper

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    It's probably like the autopilot compass in my boat that states it should not be placed near large iron objects like the engine. Is there a consistent distance where it might go away?
     
  4. msinger

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    All is usually okay for me if I'm 10+ feet away. I don't know if larger structures would require you to be even further away.
     
  5. Flatwoods

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    I fly off and around boats and docks also and have had problems with compass calibration warnings. Found a good "when to and when not to recalibrate your compass" thread elsewhere on this forum that I'll try to look up again and pass along.

    Yours is a Mainship?
     
  6. Flatwoods

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    The compass calibration thread is titled "Compass Calibration, A Complete Primer". Good stuff.
     
  7. msinger

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