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	Fri, 06 Jun 2014 05:16:53 -0700 (PDT)
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Date:	Fri, 6 Jun 2014 08:16:53 -0400
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Subject:	Re: [geda-user] Seized gear motor ~ steering questions and advice
From:	Rob Butts <r DOT butts2 AT gmail DOT com>
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That was my original motor.  Here is the stepper motor:

http://www.ebay.com/itm/NEMA-23-Stepper-Motor-CNC-Mill-Robot-Lathe-RepRap-Makerbot-3D-Printer-/121146152794?pt=LH_DefaultDomain_0&hash=item1c34df975a

I started reading the STK672 datasheet last night.  According to the Nema
spec it has higher torque when driven bipolar over unipolar.

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<div dir=3D"ltr"><div>That was my original motor.=C2=A0 Here is the stepper=
 motor:</div><div>=C2=A0</div><div><a href=3D"http://www.ebay.com/itm/NEMA-=
23-Stepper-Motor-CNC-Mill-Robot-Lathe-RepRap-Makerbot-3D-Printer-/121146152=
794?pt=3DLH_DefaultDomain_0&amp;hash=3Ditem1c34df975a">http://www.ebay.com/=
itm/NEMA-23-Stepper-Motor-CNC-Mill-Robot-Lathe-RepRap-Makerbot-3D-Printer-/=
121146152794?pt=3DLH_DefaultDomain_0&amp;hash=3Ditem1c34df975a</a></div>
<div>=C2=A0</div><div>I started reading the STK672 datasheet last night.=C2=
=A0 According to the Nema spec it has higher torque when driven bipolar ove=
r unipolar.</div></div>

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