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Brown trouser moment

Discussion in 'Pro/Adv Discussion' started by Bambola, Jan 1, 2016.

  1. Bambola

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    Hi Guys
    I had a very bad experience last night whilst trying to get some video of our local fireworks, set up the P3A ok but didn't re calibrate the compass as I normally would as their where a lot of people around (not dangerously close though) however it was done earlier in the day within a half mile away.
    Took off and moved quickly into safer ground and noticed that I didn't have full control as if I had lost GPS beginning to panic even though I have 6 months experience and about 150 flights I hit RTH and she started getting closer but looked like she was going to touch down in the water so I took over again and she seemed to drift again, I managed to do a very rapid and what must have been a heavy landing about 200 ft. away on a road- she stayed upright and didn't cause any damage but not the start to the new year I was hoping for.
    I have tried attaching the flight data so if any of you guys have any idea of what may have gone wrong I would be grateful.
     

    Attached Files:

  2. The Suburban Hippie

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    Hmm interesting. You shouldn't have had to re calibrate the compass so soon in that area. If you leave the area yes. Not 1.5 miles though.

    I have been flying about 3 years, and I only re calibrate the compass if I change locations by say 60 miles, if I update firmware, or if I see a problem.

    Maybe it could have been signal interference?

    By the way, I tried to look at your flight logs in notepad. What do I need to look at the flight log? Anyone?
     
  3. Bambola

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    This is the first time I have tried to show a flight log, I apologise if it doesn't work, can I upload from healthy drones?
     
  4. Donw35

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    you can and make the public or screen shot the information
     
  5. Bambola

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  6. dysan911

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    I rarely calibrate my compass. Even after firmware updates. I rarely travel in excess of a 100 miles otherwise I'd probably then do a recalibration. I just look at my sensor mod values and if they're in the 1500 range I'm good to go.
     
    sonof40 and Chris P Duck like this.
  7. Bambola

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    D and E show mode changes? however if I try to change mode on the controller and I don't believe I did, it says - cannot switch current flight mode to switch enable multiple flight mode in the settings menu?
    help to clarify this would be appreciated - always something else to learn.
     
  8. plasrobin

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  9. Bambola

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    awaiting a verification link email from healthy drones, as soon as I get it I will post the link
     
  10. phantom13flyer

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    Did it appear to have a toilet bowl effect while it was in the air ??
     
  11. Bambola

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    It was dark, but no noticeable toilet bowl affect it just seemed to race down wind with little control.
     
  12. ukglyn

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    When you say toilet bowl effect do you mean drifting round & round? What does that indicate as not heard anything called that before.
     
  13. Bambola

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  14. ukglyn

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    Cell 1 on your battery is showing a whole load of errors.
     
  15. Bambola

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    what would that do in real terms?
     
  16. ukglyn

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    I don't think that it would cause the problems you experienced but is something that I would be a bit concerned about & be keeping my eye on.

    I think for some reason your phantom changed to atti mode (as shown in healthy drones) & this means that they can get pushed around by the wind, as atti mode only takes care of altitude I think.
     
  17. plasrobin

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    Yes you made atti Active with the switch on the remote.

    9 seconds in flight atti is active

    E 00m 09s 3.6 m 0 m Mode Mode changed to Atti

    -> then the brown pants moment :)

    F 00m 36s 32.9 m 179 m Mode Mode changed to GoHome

    G 00m 36s 32.9 m 179 m Tip Tips__Going to the Home Point

    H 01m 15s 10.8 m 14 m Mode Mode changed to AutoLanding

    I 01m 15s 10.8 m 14 m Tip Tips__Going to the Home Point

    -> hard landing :)

    HealthyDrones.com - Innovative flight data analysis that matters

    More info on atti here : Atti mode phantom questions | DJI Phantom Forum


    And yes there is a real problem with your battery, i would stop flying with that battery! -> this could cause a crash! :)

    HealthyDrones.com - Innovative flight data analysis that matters
     
    #17 plasrobin, Jan 1, 2016
    Last edited: Jan 1, 2016
  18. Bambola

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    Thanks guys, very confused as I didn't set it to atti and the app is not set to let me??
    Do you think that the battery will be under warranty ?
     
  19. phantom13flyer

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    Yes a toilet bowl effect is when the uav moves round and round in circle similar to when a toilet is flushed hence the name. It can occur when a there is some sort of interverence with the compass . Such as metal or magnetic materials near the uav when the compass is calibrated .
     
  20. fastsmiles

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    You might consider a test flight in a small controlled area and try switching between GPS and ATTI modes. Then check flight in only GPS mode. You may have a bad switch.
    Fly with a new battery.