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Compass error - restart aircraft

Discussion in 'Pro/Adv Discussion' started by Rich UK, Jul 22, 2016.

  1. Rich UK

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    Hello, I've got a few flights under my belt since getting my Phantom a few days ago and love it.

    Today prior to flying I did the I'M and gimbal calibration and already I saw it made a huge difference in stability (unless it was just less windy?).

    I then did a compass calibration and went to do an auto take off. It then gave me an error which I couldn't properly see as another screen kept popping up in front of it almost immediately. I think the message said 'compass has failed, please restart the aircraft'. It seemed to calibrate OK though which was odd. I may be wrong as to the exact wording of it but it was along those lines.

    So I restarted it, don't think I calibrated again and all was fine, managed to auto take off and didn't experience anything weird. Do I need to worry about the error, is it likely to occur again in anyone's experience or shall I just carry on as normal and stop being paranoid?

    Thanks,

    Rich

    Sent from my SM-G900F using PhantomPilots mobile app
     
  2. RedHotPoker

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    Yes, error messages may appear from time to time. so it's suggested to lift off and hover a couple minutes to check if things appear ok. warm up the battery and then take off
    Sure..flying any pricey drone, be cautious, be normal.. ha

    RedHotPoker
     
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  3. Reed L

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    I had something like that happen once. It's never happened again. It was on the second flight that I made with my P3P. I haven't changed a thing and it hasn't happened again. Mine was a compass failure.
     
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  4. SnoozeDoggyDog

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    No need to warm up the battery .... not even when flying in the UK ;-)

    You'll do well to take off to about 6 to 10ft, check the controls (fwd, back, left, right, yaw) let it hover for 30secs. Have a quick check of you battery cells and that no errors have popped up ..... and away you go
     
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  5. Rich UK

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  6. RedHotPoker

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    Yeah no, only in Canada? Hahaha

    RedHotPoker
     
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  7. WetDog

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    An occasional compass error is to be expected. They are finically little beasts but RHP's suggestion of hovering around briefly is a good one. Before you get too enthusiastic about recalibrating, read Ianwood's important article on this topic.
     
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  8. RedHotPoker

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    I always let it hover at my eye level for a few, just to be sure everything is rock steady, and to quickly check the MOD values/numbers.

    Once it has been proven stable with no jitters or erratic movements, off we go...
    Here's a quick list...
    PFC, pre-flight checklist


    • Phantom & R/C battery charged
    • Tablet charged (reset or remove apps from memory)
    • Propellers installed and tightened
    • Remove gimbal lock
    • Gimbal not obstructed (grass)
    • Tablet volume & luminosity to MAX
    • Tablet « Do Not Disturb » Mode
    • Tablet to R/C cable attached
    • Tablet Wifi & BT OFF R/C ON
    • R/C in P-Mode
    • Phantom ON
    • Launch DJI Go app




    Check values :

    1. Compass status
    2. IMU values (0, 1, 1400-1600)
    3. Gain values
    4. Max height
    5. RTH height (depends on flight location)
    6. R/C EXP & Gain (0,5-0,4-0,5)
    7. VPS ON (if indoor flight)
    8. Satellite status
    9. Format SD card
    10. Camera settings (LOG, video size, …)
    11. Gimbal configuration (1, 2 or 3)
    12. CHECK HOME POINT CHECK BATTERY STATUS (Cells)

    Finally: Takeoff Hover 30 seconds & check stability

    All systems are Go!! Hahaha

    RedHotPoker
     
    #8 RedHotPoker, Jul 23, 2016
    Last edited: Jul 23, 2016
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  9. Rich UK

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    Cool thanks mate, I've screenshotted that!

    Sent from my SM-G900F using PhantomPilots mobile app