Just started SMC3 Utils but motor keeps spinning

Please post pictures of all of your settings.

What control board and pots are being used?

At rest, so the rig in its default position, the pot and hence the pot line should be centered in the SMC3 graph.

Again what are you using for pots and how are they connected to the motors?

You should be able to first disconnect power to the motors, then rotate the pot by hand until it is centered, then reattached the pot to the motor and reconnect power to the motors.

As an aside your SMC3 setting seem a bit all over the place, how did you come to determine them?

As I mentioned your SM3 settings look odd, so please set Fpwm to 25 then follow the SMC3 setup steps below, and if something does not work as expected please let us know what step that is at:

1. Disconnect the motor power supply
2. Make sure Simtools is not running – we’re not ready for that yet!
3. Wire up the Arduino (with SMC3 installed) to your H-Bridges and connect to your computer via USB
4. Run the Windows SMC3 Utility software and make sure it communicates with the Arduino (There is no need to set baud rates, they are not configurable)
5. Set the Kp, Ki, Kd, PWMmin, PWMmax, PWMrev to 0 for ALL motors (This will make sure the motors don’t move)
6. Set Clip to 255 (you need to do this first) and Limit to 255 (This will give you plenty of margin if something goes wrong while setting up)
7. Turn on the power to your motors – nothing should move at this stage!
8. Set Kp to about 400
9. Now slowly, increase PWMmax… at some point the motor should start to move. When it does check the “Green” feedback line is moving toward the “Blue” target position.
   • If it is then that motor and feedback is wired correctly - proceed to test other motors.
   • If it is moving away turn off motor power immediately (or quickly reduce PWMmax again). In this case you need to either reverse the wires to the motor being tested –OR– reverse the +5V and GND wires to your feedback pot for the motor being tested (do not do both). Restart the test from the beginning.
10. Do the above for each motor

What are your current settings, please post a picture, and also advise at what point in the setup instructions failed.

If the rig is at its centered position the pot line should be over the middle blue line, are you sure the pots are centered properly.

The other possibility is faulty IBT2s. What voltage PSUs and motors are you using?

Other members have reported issues running IBT2s at 24v, dropping a couple of volts seems to be more reliable.