Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Odd behavior from my quad

Discussion in 'Phantom 2 Vision + Discussion' started by phantomnoobpilot, Dec 29, 2014.

  1. phantomnoobpilot

    Joined:
    Dec 17, 2014
    Messages:
    108
    Likes Received:
    11
    Location:
    SEA
    Had several successful flying attempts since my phantom came back from a short hiatus but just now I experienced something rather odd.

    Took off and flew around for sometime before deciding to land it with its power still on but propellers idle while I fiddle with the DJI app to toggle some settings, specifically with the preview quality.

    Then suddenly, out of the blue my quad started up on its own and propellers started spinning even though i'm not touching the sticks, had to quickly apply CSC to prevent it from flying off and it landed on its side with 0 damage, happy about that.

    This is the first time this happened, I still had over 40% of battery left but I was scared it might behave erratically again so I decided to pack up and call it a day.

    Anyone experienced this before? It scared the **** outta me.
     
  2. Dirty Bird

    Joined:
    Apr 15, 2014
    Messages:
    0
    Likes Received:
    9
    Location:
    Glen Burnie, MD - USA
    If you land and leave the propellers running at idle, in time they will spin up. If you start the motors but leave it idling without taking off, they will remain at idle. Basically if you want to sit on the ground idling, stop the motors, and then restart them. Don't throttle up and they will then remain at idle.
     
  3. 4wd

    4wd

    Joined:
    Mar 31, 2014
    Messages:
    2,532
    Likes Received:
    421
    Location:
    North York Moors
    Yes it will do that if you try to run down the battery by idling too, not good indoors. :?
     
  4. phantomnoobpilot

    Joined:
    Dec 17, 2014
    Messages:
    108
    Likes Received:
    11
    Location:
    SEA
    i see, so every time i land, i would have to kill the motors and and then restart them but not throttle and leave them spinning slowly or else they'll just start up randomly some time later again?
     
  5. locoworks

    Joined:
    Jul 4, 2014
    Messages:
    471
    Likes Received:
    10
    that's how it reads to me?? I'd like to know why it decides to spool up if left at idle without stick inputs??? seems dangerous if nothing else...
     
  6. DCGOO

    Joined:
    Jun 4, 2014
    Messages:
    109
    Likes Received:
    0
    Location:
    Indianapolis
    The reason is, the bird still thinks it is flying. Ever notice how the altitude shifts around a little when hovering? If that happens after it has settled to the ground, returning the stick to to center, says hover... until the detected altitude drifts a little. Then it takes off. You have to hold down stick if you want it to stay on the ground. Full down shuts it off after a delay.
     
  7. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,244
    Likes Received:
    1,614
    Location:
    Palm Beach Co.- FL

    Yup... a guaranteed tip-over.
     
  8. Dirty Bird

    Joined:
    Apr 15, 2014
    Messages:
    0
    Likes Received:
    9
    Location:
    Glen Burnie, MD - USA
    When you land and leave her idling your bird thinks its still in the air and flying. As the barometric sensor isn't absolutely precise and sometimes jumps around a bit, it can cause the motors to spool up when it mistakenly thinks it is losing altitude. When you start but haven't yet lifted off, it knows its still on the ground.