Servers by jDrones

PPM encoder and PixHawk


(jimkan) #1

Hi,
I have a 9X8Cv2 receiver connected to PPM Encoder, ch1,ch3,ch5,ch6 are connected to encoder with signal wire flipped, PPM wire is connected Pixhawk RC input, PPM Encoder led is blinking, a Sabertooth ch1,ch2 are connected to Pixhawk OUT ch1 and ch3. with this setup nothing is happen, I wonder what I did wrong?

Thanks,
Jimmy


(Thomas J Coyle III) #2

@jmkan,
Try using Pixhawk OUT ch1 and ch2.
What do your RCMAP parameters look like?
Regards,
TCIII AVD


(jimkan) #3

Thanks Thomas,
Here are the RCMAP parameters, I connected a servo to ch1 or ch2 but no movement.
RCMAP_PITCH 2
RCMAP_ROLL 1
RCMAP_THROTTLE 3
RCMAP_YAW 4

Looks like there are no signals out on those MAIN OUT pins.

Jimmy


(Thomas J Coyle III) #4

@jmkan,
The Pixhawk servo bus power rails must be powered by a separate BEC to provide power to the servos.
Regards,
TCIII AVD


(jimkan) #5

Hi Thomas,
yes, by providing 5v to power rails the servo finally move. I reconnected my Saberthooth 2x12 and it works as well. I think my issue was the arming.

Thanks,
Jimmy