Rover moves at neutral throttle

ArduRover Miscellaneous
1

I have looked a lot but cannot find an answer.

Situation:

Lawn Mower Rover

Remote where the throttle has a forward, neutral, and backward position. The kind of remote with the wheel on the side.

Problem;

When I arm the mower, the vehicle moves forward slowly. But it is moving without any physical throttle input.

Implication:

Uncontrolled lawn mower moving on its. Thankfully, it is moving slowly.

Need:

Is there a way to increase the “band” of neutral for this type of remote?

Trim on the remote and trim on the Rc_Trim creates issues with arming.

Motor deadband makes the problem worse.

I think the neutral range for the remote is somewhere between 1470 and 1490 ppm.

Workaround:

I set up an arm/disarm switch on the remote and disabled motors when disarmed.

Any help would be appreciated. Thank you!!

2

RC3_DZ. default is 30, but you can increase it. Or decrease it.

3

Allister,

Thank you for your response. Set to 200 and it did not resolve the issue. It probably isn’t a remote issue, rather a small, unintended, signal coming from the flight controller.

Disarming stops the signal, but not when armed.

Any thoughts?

Either way, thank you for your quick response.

-Allen

4

Calibrate the RC input and outputs.

1 Like
5

I agree with @LupusTheCanine, calibrate the RC inputs (Mission Planner) and the RC outputs (in your radio)

If you’re still having issues there you’ll need to share a .bin log file so somebody can have a closer look to see what’s going on.

What mode is this happening in? Or is it happening in all modes?

6

Confirmed not a remote issue. Will move even without the remote turned on after arming via mission planner. Happens in Hold and Manual modes.

Also confirmed it is a signal coming from the flight controller by removing the pwm to one wheel. Other wheel moves slowly.

Trying to figure out how to create and download logs.

7

Ten you need to calibrate the motor controller to Ardupilot signal or adjust Ardupilot output range to match the motor controller range.

8

Would that be the servo trim setting?

9

Solved. Reduced servox_min and servox_trim to 900 (1100 default). No longer moves when armed without input!!!