Hi!
I'm having some trouble getting the Pixhawk to control the motor on my flying wing. The ESC keeps beeping at boot and I am not able to control the throttle at all. Initially I thought it was an ESC calibration issue, but I have successfully calibrated it both manually and through Pixhawk, still not able to control the throttle. Weird part is that if I use the radio receiver directly, without going through the Pixhawk, I can control the motor with the receiver. But if I try via the autopilot the ESC just beeps like the Pixhawk isn't communicating with it. I've searched a bunch of forums already, but nobody seems to have the same problem. I've checked the wiring and ports carefully and it all seems correct. What would cause to motor to work directly with the receiver but not through the Pixhawk?
Any input is appreciated!
Replies
If my memory is correct I had a similar issue on a quad and found that the ESC did not like having no pwm input for a longish period of time. The pix did not send a pwm signal until it armed or was going through the arming process. The ESC had been looking for a pwm signal since it was powered up and had given up when it did not receive one until the pix was armed.
I changed the ESC to one that did not mind having no pwm input.
Peter
Thanks for your reply! I actually used this very same ESC with the Pixhawk before without having this problem, however I have changed the motor. I've also tried to arm the Pixhawk immediately at boot (since I heard this approach worked for some people with similar issues), to see if the issue resolved but without luck. If the ESC in fact waits for PWM values, this way should give some results. But I'll try one more time later to make sure!
Anton