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Date: Wed, 17 Dec 2014 15:19:31 -0500
Message-ID: <CALSZ9gocPQKnT83eq1oZMc2DEv5Rz8ktcqTUdyqvv5ApjjvXSQ@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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looking forward to it!

Thanks

On Wed, Dec 17, 2014 at 1:20 PM, Ed Simmons <ed AT estechnical DOT co DOT uk> wrote:
>
>  Full steps clatter like a typewriter! They start sounding smoother at
> maybe 8-16 microsteps per step. On most CNC machines with steppers, we aim
> for 32 step micro-stepping, but this has an added consequence of requiring
> vastly higher frequency step signals.
>
> Have fun!
>
>
> On 17/12/14 18:10, Rob Butts wrote:
>
>  I'm driving it with a microchip pic ~ no, I'm not micro-stepping ~ I'll
> have to try that
>
>  Thanks guys
>
> On Wed, Dec 17, 2014 at 12:55 PM, Ed Simmons <ed AT estechnical DOT co DOT uk>
> wrote:
>>
>>  On 17/12/14 17:21, Rob Butts 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
>>  HI Rob,
>>
>> What sort of drivers are you using? Are you micro-stepping?
>>
>> Ed
>>
>> --
>> Ed Simmons
>> ed AT estechnical DOT co DOT uk
>> www.estechnical.co.uk
>>
>>
>
> --
> Ed Simmonsed AT estechnical DOT co DOT ukwww DOT estechnical DOT co DOT uk
>
>

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<div dir=3D"ltr"><div>looking forward to it!<br><br></div>Thanks<br></div><=
div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, Dec 17, 20=
14 at 1:20 PM, Ed Simmons <span dir=3D"ltr">&lt;<a href=3D"mailto:ed AT estech=
nical.co.uk" target=3D"_blank">ed AT estechnical DOT co DOT uk</a>&gt;</span> wrote:<b=
lockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px =
#ccc solid;padding-left:1ex">
 =20
   =20
 =20
  <div bgcolor=3D"#FFFFFF" text=3D"#000000">
    <div>Full steps clatter like a typewriter!
      They start sounding smoother at maybe 8-16 microsteps per step. On
      most CNC machines with steppers, we aim for 32 step
      micro-stepping, but this has an added consequence of requiring
      vastly higher frequency step signals.<br>
      <br>
      Have fun!<div><div class=3D"h5"><br>
      <br>
      On 17/12/14 18:10, Rob Butts wrote:<br>
    </div></div></div><div><div class=3D"h5">
    <blockquote type=3D"cite">
      <div dir=3D"ltr">
        <div>I&#39;m driving it with a microchip pic ~ no, I&#39;m not
          micro-stepping ~ I&#39;ll have to try that<br>
          <br>
        </div>
        Thanks guys<br>
      </div>
      <div class=3D"gmail_extra"><br>
        <div class=3D"gmail_quote">On Wed, Dec 17, 2014 at 12:55 PM, Ed
          Simmons <span dir=3D"ltr">&lt;<a href=3D"mailto:ed AT estechnical DOT co=
.uk" target=3D"_blank">ed AT estechnical DOT co DOT uk</a>&gt;</span>
          wrote:
          <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bord=
er-left:1px #ccc solid;padding-left:1ex">
            <div>
              <div>On 17/12/14 17:21, Rob Butts wrote:<br>
                &gt; I&#39;m using this motor to turn a shaft.=C2=A0 I have=
 all
                of the inputs in a<br>
                &gt; static state with the clock signal turning the
                motor.<br>
                &gt;<br>
                &gt; With the motor not connected it is silent as it
                turns.=C2=A0 When I mount<br>
                &gt; it on a metal block so that it meshes with the gear
                of the shaft it<br>
                &gt; puts out a rattle as it turns,.<br>
                &gt;<br>
                &gt; I found that if you press down on the stepper it
                doesn&#39;t chatter so<br>
                &gt; much.=C2=A0 We put a neoprene gasket under it which
                helped quiet it but it<br>
                &gt; was still a noticeable chatter.<br>
                &gt;<br>
                &gt; We then mounted a plate on top with a neoprene
                gasket lightly<br>
                &gt; compressing the stepper.=C2=A0 This quieted it quite a
                bit.<br>
                &gt;<br>
                &gt; Is this a common issue with steppers or am I not
                doing something<br>
                &gt; correctly?=C2=A0 Lastly, does anyone see a problem
                slightly compressing it?<br>
                &gt;<br>
                &gt; Thanks<br>
              </div>
            </div>
            HI Rob,<br>
            <br>
            What sort of drivers are you using? Are you micro-stepping?<br>
            <span><font color=3D"#888888"><br>
                Ed<br>
                <br>
                --<br>
                Ed Simmons<br>
                <a href=3D"mailto:ed AT estechnical DOT co DOT uk" target=3D"_blank">e=
d AT estechnical DOT co DOT uk</a><br>
                <a href=3D"http://www.estechnical.co.uk" target=3D"_blank">=
www.estechnical.co.uk</a><br>
                <br>
              </font></span></blockquote>
        </div>
      </div>
    </blockquote>
    <br>
    <br>
    <pre cols=3D"72">--=20
Ed Simmons
<a href=3D"mailto:ed AT estechnical DOT co DOT uk" target=3D"_blank">ed AT estechnical DOT co=
.uk</a>
<a href=3D"http://www.estechnical.co.uk" target=3D"_blank">www.estechnical.=
co.uk</a></pre>
  </div></div></div>

</blockquote></div></div>

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