Motors doesnt run with ArduPilot

ArduCopter Copter 4.0
1

Hi,

I was using Holybro Pixhawk4 with Dshot600 and PX4. After setting params as to use FMU PWM OUT as a main according to this guide. I managed to run motors.

2021-08-12 14_01_37-DShot ESCs · PX4 User Guide and 34 more pages - Personal - Microsoft​ Edge
2021-08-12 14_01_37-DShot ESCs · PX4 User Guide and 34 more pages - Personal - Microsoft​ Edge934×777 81.1 KB

After installing ArduCopter and setting MOT_PWM_TYPE = 6 (Dshot600) motors doesnt run.
I also tried to disable BRD_IO_ENABLE (This allows for the IO co-processor on FMUv1 and FMUv2 to be disabled). Which i find similar to SYS_USE_IO=0(PX4 param setting to run Dshot).

Thanks in advance.

2

Post your parameter file.

1 Like
3

I can also post my PX4’s params that works well.
this one is ArduCopter param file, i disabled Safety and selected Dshot600.
ardu_backup.param (17.5 KB)

4

You don’t have any motors assigned to the Aux (FMU) outputs, they are assigned to the main outputs which won’t work with Dshot protocol. Aux outputs are Servo9-14. Also, set this to 1 if you want passthru to BLHelisuite: SERVO_BLH_AUTO

No point reading a PX4 guide for Arducopter. And set this back to default: BRD_IO_ENABLE

1 Like
5

Got it, so i need to map my motor outputs with SERVOn_FUNCTION param?
Thank you.