High speed stepper motor noise and vibration


We are getting some scratchy noises from out Nema 8 micro stepper with gear box using the driver STSPIN220. The gear box is not the problem.

We think it is caused by the delay between steps imposed by our python code because we are running at high speeds

Do you think this makes sense as the reason for the noises?

Please advise.

Thank you,


Is the noise the only issue with the setup right now, or is there anything else that is also not working? It is hard to speculate about what might be causing noise like that without actually hearing it or knowing more about your setup. A video that shows the problem as well as some pictures showing all of the connections in your system would be helpful. The forum does not allow users to post very large videos, but it does work well with videos linked from other sites (like YouTube or Vimeo).

Can you also let us know what specific stepper motor and power supply you are using as well as what VREF is set to on your board?

There could be several possible causes for noise, so you might consider changing some of these variable to see if they change the results:

  • Remove any load attached to your motor’s output shaft and remove the gearbox
  • Change the microstepping size
  • Change the pulse rate (motor speed)

- Patrick