Discussions

So I swapped out my APM 2.6 on my quad (which working flawlessly for many flights) with a pixhawk (rtfhawk). Did the usual required radio calibration, had a few nice flights, did autotune etc but found I needed to also recalibrate the esc's as I had limited throttle range and motors weren't all starting at the same time. The motors now all start at the same time and on just raising throttle.

But now after a hover for a few minutes and then land, the motors don't stop spinning, even after disarm until the safety switch is then pressed off. The motors stop but the esc's then do a slow beep (esc's are detecting throttle?).

Also after arming and letting it sit for a minute or two, the motors start to chatter then slowly spin up and continue to increase on their own. It's as if throttle input to the flight controller is increasing slowly by itself. RCIN and RCOU for ch3 in the logs stay flat while this happening though.

Setup is:

MOT_SPIN_ARMED = 0 so should not spin on armed
Throttle range 982-2005
Taranis and X8R bound mode 4 1-16
Latest 3.3.2 firmware loaded
Simonk ESC's from rtfquads
Happens in Acro mode as well

I have tried all of: creating a new taranis model, erased and reinstalled firmware, ran through radio calibration, esc calibration all numerous times, searched the whole of the internet.!..

This setup ran fine with the APM 2.6 ( a lead for each rc channel to the flight controller rather than sbus and ppm of course) and also when I swapped back to the APM just now to test.

I've now come to an end trying to solve this so any suggestions appreciated please.

Thanks,

Richard.