well I do have a serious problem since 1 year with the Althold mode.
When I switch from stabilize mode into althold mode (or any similar mode) I get terible motor pulsings.
I'm working on this problem since one year, I replaced every component because I thought it was the ESC, Motorsync, cable vibrations anything problem.
But it was not.
Then I played around with the PID values, but it wasn't this neither.
the apm advanced tuning is not very helping http://copter.ardupilot.com/wiki/tuning/
and I could get much out of this thread http://diydrones.com/forum/topics/motor-pulsing-in-altitude-hold?gr...
here is a video: https://youtu.be/F8QQMKo4VMM
and my rig:
Pixhak original with MP 3.2 quadcopter X
2300gr total weight
Ironman 680 from tarot
3S Lipo with 5Ah
12"x5 probs fron Aeronaut
controlled by turgnigy th9x
Please help me I'm help less
I fought and fought motor pulsing on my quad, tried every parameter I could think of. It went away when I tried a different ESC.
Yours is much worse than what I saw, but same situation. Flies well in stabilize but every altitude hold mode pulses.
I now avoid SimonK ESCs in APM applications, though I have found prop combinations that work OK. Every prop in my box seems to work with generic ESCs.
I adde some vibration Dampening, see the video
But still nothing
Please i Rewally neeed help my master thesis depends on it
logs attached coresponds to the flight in the video.