I just flashed AC3.5-rc11 on my quad, I’m running a pixhack with 4006-380kv motors, hobbywing 40a xrotor escs with the latest blheli spinning 15" props. After flashing AC3.5-rc11 I re-calibrated everything including ESCs.
When I begin to take off in stabilize the air frame begins to oscillate back and forth a few degrees 45 degrees off of the longitudinal axis. (It’s and X configuration) And you can hear a couple motors sort of “pulsing”. I’ve tried to reduce the roll/pitch rate control slider, and It didn’t make much of a difference.
I made some investigation in the logs. The pwm from the flight controller on RCOU, channels 3 and 4 indicate the oscillation, and, they are 180 degrees out of phase from each other, which explains the kind of rocking motion the airframe does between motors 3 and 4.
The oscillation isn’t terrible but, I certainly don’t feel comfortable flying this way. I’m too nervous to do a autotune either.
Any advise is greatly appreciated as I don’t know what my next step should be.
Bin Log Here