For details, see http://multirotorforums.com/threads/kde-direct-xf-uas-esc-and-flight-controller-compatibility-list.20587/page-3
Following KDE's instructions, the other day I thought it was fixed, but spoke too soon.
The copter arms, but the motors will not spin correctly. One motor will slow down and stop after a number of seconds. Giving it more throttle, the motor spins up again, but repeats slowing down/stopping. It's not always the same motor. I have tried various parameter settings for THR_MIN, MOT_SPIN_ARMED
Right now the settings to keep all motors spinning are:
THR_MIN 0
MOT_SPIN_ARMED 130
THR_MID 500
I know MOT_SPIN_ARMED is supposed to be below THR_MIN, but I've tried that and every other combination I could think of.
After arming with above settings, all 4 motors spin up at min throttle and stay running for 15 seconds, then turn off and disarm. This is normal.
However, while moving the throttle up, at about 1/2 throttle, maybe a bit more, the motors go to what sounds like max throttle. Not good.
Would you guys using KDE ESC's with a Taranis tx and Pixhawk detail how you got everything to work properly? Did you need to change settings for the KDE ESC firmware?
Thanks.
It's a shame because the throttle response on these KDE's are amazing, but something is really wrong. I don't believe the ESC's are bad (tested each individually), and definitely not the motors. The ESC's have the latest firmware with default settings per KDE manual.
I am just about ready to take these KDE ESC's out and replace with HobbyWing Quattro which work perfectly on another quad with the same KDE 515 motors, although are not as responsive as the KDE's.
Replies
Wow, did I jump the gun on this. Someone replied to me in the above link and said they had the same odd behavior at startup, but once in the air was fine. So I decided to try it, and it flew very well except for some wobble, but I suspect that is a PID as there was no detectable sync issues. Vibration levels were fantastic.