RTL activated but not sure why

Posted by Edgar Scott on May 5, 2015 at 4:40pm

In one of my auto missions I am getting a RTL activated, reproducible every time and i just don't know why.  I look at the logs but I'm just not verbose enough with them to pin point it.

I have flown the mission 4 times and all 4 times the "First Only" RTL in the log is activated not by me.

I can then switch to Stabilize I can fly much further past that boundary so I don't "think" its my controller loss signal.

The other suspicion I had is that it was the Droid Planner loosing its telemetry contact, so I looked at Ground Station Failure FS_GCS_ENABLE and Disabled it, tried again and sure enough the RTL was activated at the exact same spot in the mission as the other 4 times.

This is flown over a wooded park away from houses/power lines/cell.

I would really appreciate it if anyone can tell me from these logs what is activating the RTL, or at least point me in the right direction based on the logs.

2015-05-02%2016-03-52.log

Thanks, Ed,

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Replies

  • This reply was deleted.
    • Edgar Scott June 10, 2015 at 3:06pm

      Thanks, well I never found it :(

  • Cala May 6, 2015 at 6:11pm

    Look's here http://copter.ardupilot.com/wiki/flying-arducopter/flight-modes/  , right each mode you have a pwm value range, and upside the modes, you have the current pwm, if you change mode, you can observe that current value changes but oscilate a little, if you have that current value near other mode, when oscilates perhaps give you an error as you have; sorry my bad english check if you don't have an issue here, one time ocurrs to me, perhaps something happens on the same place that repeat the issue there.

    • Edgar Scott > Cala May 6, 2015 at 9:06pm

      Cala, Thank you very much, you figured it out :-D

      My Current PWM for F Mode 1 (stab) was 1225, which is very close to F Mode 2 PWM of 1231, and my FMode 2 is set to RTL.

      I adjusted my Tx to 918 current PWM for FM1, I doubt I will ever see this issue again.  

      Thanks again for finding this issue, its something I should have noticed but was thinking it was a signal loss or GPS error and I was looking in the wrong place.

      I will confirm this when the weather gets better, but Im 99% sure you figured it out.


      Thanks again, Wahoo!

      Ed,

    • Cala > Edgar Scott May 7, 2015 at 6:13am

      Good luck and enjoy flying :D

  • Cala May 6, 2015 at 2:55pm

    You have a F mode err, check your PWM values in M planner Flight modes page if there isn't very near, You switch voluntary to pos hold? check specially stab and pos hold and RTL values,

    3701995880?profile=original

    • Edgar Scott > Cala May 6, 2015 at 5:45pm

      As soon after it started to climb (RTL I think) I manually entered pos-hold yes.
      When you say check your PWM in MP can you tell me what Im looking for?
      I do find it odd, still wonder why the RTL was always in same spot all 4 times?

      Thanks again for looking at this for me as its ongoing.

  • Colin Henderson May 6, 2015 at 2:24pm

    If it was not that you say you can fly further in stabilize I would have said check that you don't have FENCE setup inside your

    mission area. I was following my drone walking down the beach not long ago when it suddenly departed back over my shoulder and headed for home  with me in shock running after it. I had of coarse set my fence to 60m and forgotten about it.Upon hitting the wall RTL was triggered quite correctly. My how we laughed!!!

    • Edgar Scott > Colin Henderson May 6, 2015 at 5:46pm

      Only alt fence and I was way below, thanks tho

This reply was deleted.