Not sure how to search on this or if this has been discussed before.
So I finally put together my quad with the APM2.5+ and have flown it a few times and while I am flying it there is this random twitch where the quad rolls to the side just for very brief part of a second of time. During a 15 min flight it will do it a dozen times or so.
I had the same APM2.5 board on a F450 a few months ago and noticed the same sort of glitch. Its like it randomly over corrects by a lot but only for tenths of a second then back to normal. Seems to only happen when I am moving it around and not when it is just hovering.
Does anyone know what could be causing this to happen?
The DJI F450 I had it on had the 3DR 880KV motors and blue series ESCs and the new quad which is a SteadiDrone QUAD has nicer 900KV t-motors and different ESCs (the 4 in 1 ESC).. so seems related to the APM and not the equipment since the equipment has all changed and similar problem.
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I am using a Futaba 6ex with a 606fs Rx and soldered ESC wires... I and am getting the same described twitches. My 2.6 APM was shipped last month could it need this firmware update? Is there an issue if I update and it is not needed?
Glad you found the problem.
Moral of the story : a chinese T9X cheapo Radio for 50$ plus a free firmware upgrade (to Open9x or ER9x) and a 25$ Frysky 8Ch module is much less prone to user's frustrations/issues than these expensive Futaba's or Spektrum's radios.
You haven't said what radio gear you are using.
There was a known issue with Futaba Rx's (I use these) which required an upgrade of the ArduPPM code on the board, which is a totally separate thing to the usual firmware we upload.
Once done all my twitching went away.
I also assume that you are not using bullet connectors and the like in your motor circuits.
I've also seen this on all of my quads. I've never been able to find the source.