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Nearly averted disaster...Autopilot

Discussion in 'Pro/Adv Discussion' started by Mike-m1911a1, Mar 5, 2016.

  1. Mike-m1911a1

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    Was flying around a water tower today using Autopilot. Had an orbit pre setup and saved. After I took off and reached the orbit altitude, I switched to F-mode and engaged the mission. The bird did an orbit fine. I then disengaged and adjusted the radius to get in a bit closer. When I reengaged the mission, it started orbiting and when it got on the back side of the tower turned directly in toward the tower. I was watching the screen as the big bulbous tower was getting bigger and bigger on the screen. I quickly switched to p-mode and pulled down on the right stick. I couldn't have been more than a few feet from crashing. Anyone have any issues with disengaging mission, making some changes and reenganging?


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  2. sonof40

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    Did you lose LOS?
     
  3. Mike-m1911a1

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    No, it started going toward the tower well before it was behind it.


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  4. Mike-m1911a1

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    The first orbit was actually at a lower altitude and traveled behind the tower with no degradation in the rc or video signal m


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  5. terrylowe

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    Hmmm...it still sounds like you lost signal. It does not use Lost Connection Mission Continuation (LCMC)
     
  6. Mike-m1911a1

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    The logs don't show that I lost signal plus if I had lost signal, switching over to p-mode wouldn't have helped. Also, wouldn't the bird just hover with lost signal?


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  7. With The Birds

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    This is strange..... i change parameters on the fly without issue. Have a very close look at your modified settings. Look at the log carefully also, could it be that you were orbiting ckose enough to get compass issues?
     
  8. Mike-m1911a1

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    I checked and no compass errors although there probably should have been. Any way I can check the settings after I made the changes? Wondering if I inadvertently switched from poi orbit to operator or something dumb like that.


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  9. With The Birds

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    I didnt want to assume anything but it will likely be in your settings somewhere. The few suprises i had with autopilot where when i made changes in flight and it was my settings, user error.....
     
  10. Django2

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    Can I ask how close was the bird to the tower when it took off and how close were you intending to take it.


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  11. phneeley

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    Watching


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  12. DroneRacerElite

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    I had the same issue. The closer I brought it in to the water tower I noticed one side was closer to the other. All I did to start the poi was record the center point and fly out and record the outer point and start. It should have been centered, right?

    [​IMG]






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  13. J&L

    J&L

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    Looks like your is flying in an oval around the tower. I try not to change parameters on the fly.
     
  14. Django2

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    From the no response to my question. Too close to a structure.



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  15. Mike-m1911a1

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    Django, sorry but I took off about 150m from the tower. The first orbit was about 200' radius then I disengaged, changed it to about 125' and increased the altitude. When I reengaged, it went about 1/4 of the way around and turned directly towards it.


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  16. Mike-m1911a1

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  17. Mike-m1911a1

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    DRE, I would think it should be centered. The Google pic of your tower shows a straight down view (no parallax). If your poi was center on the top, it should have been centered. My tower is shown at an angle so I placed the poi at the center of the base. Wondering if that has something to do with my results.


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  18. J&L

    J&L

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    The google earth pic of our local tower is at an angle also and I'm having a hard time getting an accurate orbit the camera doesn't focus correctly.

     
  19. Banjonut

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    My guess is that somehow you reset the point of interest slightly.
     
  20. Ewan

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    Should have returned to home if you lost signal