Posted on May 29, 2014 at 18:05Dear Enrico,
I have the same problem of the other customer; I find this problem with two different family of sanyo denki's stepper motor (you can find the datasheet in the attachment): Type 103H7126-0140 and Type 103H7123-0140;
I tried
your suggested configuration but the noise still remain;
I have tryed the configuration suggested in document UM1688 pag.39/43 and the noise still remain; for testing, I'm using the evaluation board of the L6472;
I have recorded a video that show the problem I speak; you can find the video at the following link:
http://www.onetimebox.org/box/ugkLeeD3H2kgrrveg
Do you have some suggestion that can help to solve this problem?
Best regards
