Problem sync with ESC

ArduCopter Copter 3.6
1

This is my first build

2

Maybe those ESC’s don’t like the Oneshot protocol you have configured.

3

in the technical document, it must be use oneshot protocol https://cdn.shopify.com/s/files/1/0496/8205/files/KDE_Direct_UAS_ESC_-_Pixhawk_2.1_CUBE_Instructions_rev2.pdf?14582074698445962440

4

OK yes, I see. I don’t think it will help with your problem but they recommend Output PWM max as 1940 and you have 1900.

5

Ok, now there’s some weird ESCs. Seems like they are actually opto-isolated on the input wire, and you have to feed them 5V (or 6V) to power the LED in the opto-isolator. That’s a whole can of worms in itself, before looking at ESC behaviour and possibility of desync.

Now, are you experiencing desyncs with props on or off ?

6

Yes i did it but the same problem, i trying to callibrate the ESC directly with min and max thr (1100 1940) but is the same.

7

Prop off, this esc is opto, i m trying to put 5v with a simple arduino ( i dont have BEC) But dosnt resolve the prob.

8

other detail : after desync of ESC, when i desarmed, the ESC re-callibrate automaticly

9

from the log, i see there is difference between RCIN and RCOUT, is it Normal please ?

RC
RC.JPG1709×503 53.3 KB

10

Don’t get confused,
RC IN C3 - Throttle input to FC from Transmitter
RCOUT C3- requested PWM to MOTOR 3 from FC

11

OK thank you, i was switched to QGroundConroler and it work fine, i will test tomorrow the fly.