Question Motor just continually souns

Keep in mind that other members have advised as to IBT2 quality control issues, even with brand new units.

That said, at what point of the SMC3 setup do you encounter issues: https://www.xsimulator.net/communit...3dof-motor-driver-and-windows-utilities.4957/

Initial Setup

Strongly recommend you follow the steps below if this is the first time you are using SMC3 with your simulator to reduce the risk of damaging anything.

Disconnect the motor power supply
Make sure Simtools is not running – we’re not ready for that yet!
Wire up the Arduino (with SMC3 installed) to your H-Bridges and connect to your computer via USB
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)
Set the Kp, Ki, Kd, PWMmin, PWMmax, PWMrev to 0 for ALL motors (This will make sure the motors don’t move)
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)
Turn on the power to your motors – nothing should move at this stage!
Set Kp to about 400
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.
Do the above for each motor

While written for MMs in mind the test principles are still useful to help determine if the IBT2s are faulty: https://xsimulator.net/community/faq/monster-moto-testing-before-use.158/

Additionally can you please confirm the fundamentals, that you have set the SMC3 code to Mode 2.

Have you tested the IBT2s?

As an aside the pots do not appear to be centered in the SMC3 picture.

What specifically have you been doing?

If you disconnect wiring/power to the motors when they are in what should be their middle position, open SMC3, disconnect the pot to the motor then rotate the pot shaft by hand, its green line should move and be positioned in the middle of the SMC3 graph. You can then carefully reconnect the pot to the motor while mainlining its central position. You then reconnect power to the motors.

If that does not work there is something very wrong and more detailed testing of your hardware and wiring is required.