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Date:	Thu, 18 Dec 2014 11:12:31 -0500
Message-ID:	<CALSZ9gqe8r31JNze_PPmGkMeYnNc-_zOXxTvQ1GBn+zt-njEAQ@mail.gmail.com>
Subject:	Re: [geda-user] Nema 23 stepper motors
From:	Rob Butts <r DOT butts2 AT gmail DOT com>
To:	geda-user AT delorie DOT com
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It's been a while since I've worked on this project.  I know I had
documentation on how to do micro-stepping with the microchip proc but now I
can't find it.

On Thu, Dec 18, 2014 at 7:09 AM, Balogh Richard, Ing. <balogh AT elf DOT stuba DOT sk>
wrote:
>
> Try to find resonant frequency of the whole system and then
> operate the stepper as far as possible from it. Notice that
> usually there is more than one such frequency. You can find
> it easily with simly increasing the frequency of the steps,
> i.e. accelerate the motor constantly.
>
> Richard
>
>
> D=C5=88a 17.12.2014 18:21 Rob Butts  wrote / nap=C3=ADsal(a):
>
>  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 ou=
t 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 wa=
s
>> still a noticeable chatter.
>>
>> We then mounted a plate on top with a neoprene gasket lightly compressin=
g
>> 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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<div dir=3D"ltr">It&#39;s been a while since I&#39;ve worked on this projec=
t.=C2=A0 I know I had documentation on how to do micro-stepping with the mi=
crochip proc but now I can&#39;t find it.<br></div><div class=3D"gmail_extr=
a"><br><div class=3D"gmail_quote">On Thu, Dec 18, 2014 at 7:09 AM, Balogh R=
ichard, Ing. <span dir=3D"ltr">&lt;<a href=3D"mailto:balogh AT elf DOT stuba DOT sk" t=
arget=3D"_blank">balogh AT elf DOT stuba DOT sk</a>&gt;</span> wrote:<blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">Try to find resonant frequency of the whole system and then<b=
r>
operate the stepper as far as possible from it. Notice that<br>
usually there is more than one such frequency. You can find<br>
it easily with simly increasing the frequency of the steps,<br>
i.e. accelerate the motor constantly.<br>
<br>
Richard<br>
<br>
<br>
D=C5=88a 17.12.2014 18:21 Rob Butts=C2=A0 wrote / nap=C3=ADsal(a):<div clas=
s=3D"HOEnZb"><div class=3D"h5"><br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
I&#39;m using this motor to turn a shaft.=C2=A0 I have all of the inputs in=
 a static state with the clock signal turning the motor.<br>
<br>
With the motor not connected it is silent as it turns.=C2=A0 When I mount i=
t on a metal block so that it meshes with the gear of the shaft it puts out=
 a rattle as it turns,.<br>
<br>
I found that if you press down on the stepper it doesn&#39;t chatter so muc=
h.=C2=A0 We put a neoprene gasket under it which helped quiet it but it was=
 still a noticeable chatter.<br>
<br>
We then mounted a plate on top with a neoprene gasket lightly compressing t=
he stepper.=C2=A0 This quieted it quite a bit.<br>
<br>
Is this a common issue with steppers or am I not doing something correctly?=
=C2=A0 Lastly, does anyone see a problem slightly compressing it?<br>
<br>
Thanks<br>
</blockquote>
<br>
<br>
</div></div></blockquote></div></div>

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