random twitching / flips

 Hi

     I am using  an apm2.6 and experiencing odd twitches to full flips .(in stabilize mode)

looking at the logs pitch/roll in seems steady but roll is up to 180degs on  one fatel flip.

this all seems to have happened after flying into a bush ! stalling all motors for a few seconds

My questions are   ,is rollin/pitchin radio input or output to the esc?

                           can anyone explain how overload on an esc works ?

I suspect that one or more esc s are at fault

Tim Painter

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • I had some odd random twitching the other day on a pixhawk board...  in the end I concluded it was a problem with the spek satellite antennas having touched some wet ground.. I pointed the antennas up away from the ground (only just touched a bit when landed) and the issue didn't re-present the rest of that flying session. I'd never seen this behaviour before on any of my platforms, but chalked it up to (hopefully) just antenna problem/signal loss.. 

  • Hi

     quick update . I checked my quad over  and all looked ok

    so i flew 40 mins this morning without a glitch?

    so i am wondering if my esc  (dys 20a simonk firm) have a thermal reset or something similar?

    any ideas ,self healing after a good nights rest?

    Tim Painter

    • Hi all

                My twitching problem seems to have gone away!!

         My thoughts are that at the time i was using long flexible landing legs to clear camera

      and it was windy so that on connecting battery (boot up) copter was moving causing incorrect gyro calibration

      the second incident i was booting copter in my hand  so also moving!

      can anyone confirm  if gyro and/or accelerometer    calibration take place at boot up   or arming?

      I would like to use my copter from a small inflatable boat where the chances of a stationary boot  up is unlikely

      any one had experience of this?

      Thanks Tim Painter

This reply was deleted.

Activity

Hiroki Tanaka liked Hiroki Tanaka's profile
Oct 13
Derrick Davies liked lisa TDrones's profile
Sep 23
More…