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Subject:	Re: [geda-user] Stepper Driver Question
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Date:	Fri, 12 Feb 2016 16:47:02 -0500
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On 2/12/2016 4:13 PM, Rob Butts (r DOT butts2 AT gmail DOT com) [via 
geda-user AT delorie DOT com] wrote:
> Here is the link to the screenshot of the driver circuit:
>
> http://postimg.org/image/y4n3hho81/
>
>
> ​

What speed of step or rotation do you expect?

That image looks very wrong to my eyes.

You can see at 3.2 kHz some down aliasing which could be the sound 
you're hearing.  Or it could be the 10k ... whatever.  It's probably not 
going  to spin up to the speed you're asking of it.

Phil

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