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From:	Edward Hennessy <ehennes AT sbcglobal DOT net>
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Date:	Wed, 17 Dec 2014 09:52:52 -0800
Message-Id:	<744D5AE4-C4C5-4430-9B93-FBF9DF6ADD70@sbcglobal.net>
Subject:	Re: [geda-user] Nema 23 stepper motors
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In my experience, steppers are noisy. I don't suspect anything is wrong. Microstepping drive circuits may help quiet the motor.

Cheers,
Ed

Sent from my iPhone

> On Dec 17, 2014, at 9:21 AM, Rob Butts <r DOT butts2 AT gmail DOT com> wrote:
> 
> I'm using this motor to turn a shaft.  I have all of the inputs in a static state with the clock signal turning the motor.
> 
> With the motor not connected it is silent as it turns.  When I mount it on a metal block so that it meshes with the gear of the shaft it puts out a rattle as it turns,.
> 
> I found that if you press down on the stepper it doesn't chatter so much.  We put a neoprene gasket under it which helped quiet it but it was still a noticeable chatter.
> 
> We then mounted a plate on top with a neoprene gasket lightly compressing the stepper.  This quieted it quite a bit.
> 
> Is this a common issue with steppers or am I not doing something correctly?  Lastly, does anyone see a problem slightly compressing it?
> 
> Thanks

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