Question motor movement problems with arduino and H bridges (code 2)

Please post pictures of all of your SMC3 settings.

It is impossible to guess what the motors may do without any idea of the settings controlling them, hence the request for pictures of all settings.

If you followed the SMC3 setup instructions, with everything centered and base settings, there should have been no movement until a certain PWMmax value, was that what you observed: https://www.xsimulator.net/communit...3dof-motor-driver-and-windows-utilities.4957/

See the FAQs here re inserting a YouTube hosted video into a forum post: https://www.xsimulator.net/community/faq/insert-a-video-into-a-post.257/

The settings in the video looked to be copied from here, rather than being dialed in to suit your particular hardware:

Likely so, follow the recommended setup steps and report at what PWMmax value the motors start to move:

Initial Setup

I 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.

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