MAVIC - "Unsafe to Land"

Discussion in 'Mavic Pro Discussions' started by Cookedinlh, Nov 30, 2016.

  1. Cookedinlh

    Cookedinlh Well-Known Member

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    Just got me new best friend couple of days ago and been going through the various modes.
    It's EVERYTHING I hoped to see and more . . . fantastic little bird, beautifully engineered and built, quiet, agile, a breeze to set up but . .

    This morning (3rd flight) I activated "auto-land" and it came down nice and smoothly to about 3 feet and stopped. Controller beeped I think and it said something like " Unsafe to Land - Please take over manually" . . or words to that effect. . . but it was in the middle of a paved open parking lot with nothing around it but my car maybe 10 feet away. . . so I just pull down on the stick and it landed fine. . . but it was going nowhere until I took over. It just halted in a low hover and waited for me to do something.

    Anyone else got any knowledge or experience with this?
    Thanks
     
  2. J-Dub

    J-Dub Well-Known Member

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    I'm still waiting for my bird, but it could be that on the initial take-off it didn't quite record an obvious Home Point, meaning that the underside cameras could not distinguish the actual zero-elevation-point, so it hovered when it got close. Maybe try taking off from some place that's not all gray, a grassy area, or a take-off mat with a big Target Bullseye on it? Just guessing.
     
  3. Cookedinlh

    Cookedinlh Well-Known Member

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    That could be why because I was asking it to land about 30-40 ft from where I took off but that should not have made a difference since I asked it to "Auto-Land" in a flat open space . . . not RTL
     
  4. J-Dub

    J-Dub Well-Known Member

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    Oh, not RTHome....look up Auto-Land in the manual.
     
  5. Techcop50

    Techcop50 Well-Known Member

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    Sounds like it may have thought it was over water...
     
  6. Tony Perry

    Tony Perry Active Member

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    Is there any gunk on your bottom VPS camera lens?
     
  7. J-Dub

    J-Dub Well-Known Member

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    Page 51 of the DJI MP Manual states that if the Quad detects an unsafe surface to land, it will hover and wait for Pilot to land it....
     
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  8. Kilrah

    Kilrah Well-Known Member

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    There's a setting for auto evaluating of the landing surface, you can turn that off.
     
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  9. Cookedinlh

    Cookedinlh Well-Known Member

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    Yes that's the issue . . it was perfectly clear, flat and dry pavement
     
  10. Cookedinlh

    Cookedinlh Well-Known Member

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    Thanks
     
  11. jamgabbi

    jamgabbi Well-Known Member

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    Where is that setting located in the menu ?
     
  12. Kilrah

    Kilrah Well-Known Member

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    On the vision settings page.
     
  13. jamgabbi

    jamgabbi Well-Known Member

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    I don't see it maybe I have to have the Mavic connected. I don't see any setting for auto evaluating the landing surface.
    I'll connect the Mavic up
    Thanks for your help
     
    #13 jamgabbi, Nov 30, 2016
    Last edited: Nov 30, 2016
  14. Hook

    Hook Active Member

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    It's called enable vision positioning
    [​IMG]


    Sent from my iPad using MavicPilots
     
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  15. jamgabbi

    jamgabbi Well-Known Member

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    Thanks
     
  16. Chorusbluck

    Chorusbluck Member

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    Have never had a problem with the auto land but since I have done the recent update it has started doing that as well. I have found that mine won't land on dark concrete/asphalts but will on grey or lighter. Not sure why.


    Sent from my iPhone using MavicPilots
     
  17. Steve Cam

    Steve Cam Well-Known Member

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    Same here, only since the update, won't land on concrete, I figured it was because it was a little wet but I guess that's not it. I just landed it on my hand instead


    Sent from my iPhone using MavicPilots
     
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  18. maveric

    maveric Member

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    ..in my case, it refused to land in on a slightly tall grass, which is where it took off.. not really an issue for me back then. btw, in most instances RTH to initial take-off point were within 5"..
     
  19. leesmavic

    leesmavic Well-Known Member

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    Just read about VPS before flipping the switch because of that auto landing issue you've had. It does a bit more than that.
     
  20. Cookedinlh

    Cookedinlh Well-Known Member

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    . . . and I'm not using the Mavic AUTO-LAUNCH for now either. I've see several reports of what appears to be a software glitch that can cause it to misbehave immediately . . can't find the link right now but it's on this board somewhere. . . My new P4P+ arrives today. Can't wait.. . . oops sorry, wrong board.

    FOUND IT . . . this is disturbing since there seems to be no clear cause or resolution.
    Mavic dropped to the ground after auto takeoff
     
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