X500 with X7+ rotor problem

Pixhawk
1

Hi, I tried to build a quadcopter with x500 v2 frame and x7+ pro flight controller.
After set up all the parameters and calibrate all sensors, I tried to test the behavior of the rotors via RC with manual flight mode.
With roll control, I expect that right two rotors should be slow down. But in fact two rotors in backward slow down, so that, right front rotor is faster than left back rotor.
Did I miss something? or is it a problem of the hardware?
Thanks

2

Sounds to me like you have the motors connected to the motor outputs in the wrong order. You can confirm this with the actuator test function in GQC.

3

Thanks for your advice. However I already tested the order of motors in QGC. Assigned all the motors and all the motors are tested. I found no weird behaviors on the motors.
But, when I check the PWM signal while controlling the roll on RC, I found the problem. PWM with 0 Roll, 0 Pitch signal converges to the signal with non-zero Roll command. Finally, there are no changes in PWM signal with Roll command.
I sent my H/W to the supplier and they tested the PWM on ArduPilot, and they told me there is no problem. I wonder why PX4 firmware only makes this problem.

Again, thanks for your advice.