Video with tuning advice for throttle/speed control

ArduRover Rover 3.3 / 3.4
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21

• Flashed most current Rover version
• Calibrated Accel and Compass (Offset XYZ for GPS position to flight controller)
• Calibrated Radio
• Set ROLL to 1 and THROTTLE TO 2 (Single Stick)
• Set Aux switch 7 (3 Position) for CRUISE LEARNING
• Set Aux switch 9 to (arm/disarm)
• Bench tested for correct directions of control sticks. Forward/Back Side to Side (Had to reverse throttle)
• In MANUAL applied throttle. 25% of center.
• Flicked Aux 7
• Message: CRUISE LEARNING STARTED (3 seconds) then CRUISE LEARNING FAILED.
• PLATFORM: Turnigy Trooper. (This is a fast truck)

LOG LINK

Thank you for your time.

22

It looks like the throttle is negative which probably means that a combination on inputs and outputs have been reversed.

throttle-in
throttle-in.png1204×568 21.8 KB

Has the motor direction been tested as described here on the wiki?

23

So I should rearrange wiring so directions are correct other than flipping params?

24

Ok. I unclicked all REVERSE boxes for input and output. I switched two wires on the ESC and everything was running in the right direction. I trying CRUISE LEARNING and failed again. Looked at the logs and the throttle is still in the negative.

25

Jimmy,

Well, somehow you’ve got to get the throttle to be positive when the throttle stick is up/forward. If you haven’t tried using the motor direction screen in MP I highly recommend it.

If you’re using the MP Quick screen can be configured (by double clicking on it) to display “ch3percent” which is the throttle output.

26

Success! Thank you. Playing with PID’s seems to make the brake shoot the rover backwards when I let go of the stick. I’ll work it out. You da man!

1 Like
27

Any idea why the “pid achieved” does not change (when the pid desired seems to be working just fine) during the speed to throttle tuning. I’m doing the tuning in “Acro” mode.

Btw, thanks for the video, it was really helpful.