<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.4">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="73.33" y2="0" width="0" layer="20"/>
<wire x1="73.33" y1="0" x2="73.33" y2="49.36125" width="0" layer="20"/>
<wire x1="73.33" y1="49.36125" x2="0" y2="49.36125" width="0" layer="20"/>
<wire x1="0" y1="49.36125" x2="0" y2="0" width="0" layer="20"/>
<hole x="69.05625" y="44.92625" drill="0.6"/>
<hole x="69.05625" y="44.92625" drill="0.6"/>
<hole x="3.96875" y="3.81" drill="0.6"/>
<hole x="3.96875" y="3.81" drill="0.6"/>
</plain>
<libraries>
<library name="st-microelectronics">
<packages>
<package name="MULTIWATT-15">
<description>&lt;b&gt;Multiwatt 15 lead&lt;/b&gt;</description>
</package>
<package name="DIL20">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="rcl">
<packages>
<package name="0204/7">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0204, grid 7.5 mm</description>
</package>
<package name="C050-035X075">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 5 mm, outline 3.5 x 7.5 mm</description>
</package>
<package name="E3,5-8">
<description>&lt;b&gt;ELECTROLYTIC CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 3.5 mm, diameter 8 mm</description>
</package>
<package name="PT-10">
<description>&lt;b&gt;Trimm Potentiometer&lt;/b&gt;</description>
</package>
<package name="V235/17">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type V235, grid 17.78 mm</description>
</package>
<package name="0207/12">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0207, grid 12 mm</description>
</package>
</packages>
</library>
<library name="diode">
<packages>
<package name="DO41-7.6">
<description>&lt;b&gt;DO41&lt;/b&gt; 7.6mm x 2mm&lt;p&gt;
Source: http://www.diodes.com/datasheets/ds23001.pdf</description>
</package>
</packages>
</library>
<library name="v-reg">
<packages>
<package name="78XXS">
<description>&lt;b&gt;VOLTAGE REGULATOR&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="con-ptr500">
<packages>
<package name="AK500/4">
<description>&lt;b&gt;CONNECTOR&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="con-panduit">
<packages>
<package name="057-010-1">
<description>&lt;b&gt;CONNECTOR&lt;/b&gt;&lt;p&gt;
series 057 contact pc board low profile headers&lt;p&gt;
straight</description>
</package>
</packages>
</library>
<library name="holes">
<description>&lt;b&gt;Mounting Holes and Pads&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="3,2-PAD">
<description>&lt;b&gt;MOUNTING PAD&lt;/b&gt; 3.2 mm, round</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="IC1" library="st-microelectronics" package="MULTIWATT-15" value="L298">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="IC2" library="st-microelectronics" package="DIL20" value="L297"/>
<element name="R1" library="rcl" package="V235/17" value="0.5">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="rcl" package="V235/17" value="0.5">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="D1" library="diode" package="DO41-7.6" value=""/>
<element name="D2" library="diode" package="DO41-7.6" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="D3" library="diode" package="DO41-7.6" value=""/>
<element name="D4" library="diode" package="DO41-7.6" value=""/>
<element name="D5" library="diode" package="DO41-7.6" value=""/>
<element name="D6" library="diode" package="DO41-7.6" value=""/>
<element name="D7" library="diode" package="DO41-7.6" value=""/>
<element name="D8" library="diode" package="DO41-7.6" value=""/>
<element name="R3" library="rcl" package="0204/7" value="22k"/>
<element name="C1" library="rcl" package="C050-035X075" value="3n3">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="rcl" package="0207/12" value="10k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="IC3" library="v-reg" package="78XXS" value="7805">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C2" library="rcl" package="E3,5-8" value="470uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="rcl" package="C050-035X075" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C4" library="rcl" package="E3,5-8" value="470uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="rcl" package="0204/7" value="20k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R6" library="rcl" package="PT-10" value="5k"/>
<element name="X1" library="con-ptr500" package="AK500/4" value="Stepper"/>
<element name="X2" library="con-panduit" package="057-010-1" value="057-010-1">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R7" library="rcl" package="0207/12" value="10k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="H1" library="holes" package="3,2-PAD" value="MOUNT-PAD-ROUND3.2"/>
<element name="H2" library="holes" package="3,2-PAD" value="MOUNT-PAD-ROUND3.2"/>
</elements>
<signals>
<signal name="N$1">
<contactref element="IC2" pad="4"/>
<contactref element="IC1" pad="5"/>
</signal>
<signal name="N$2">
<contactref element="IC2" pad="6"/>
<contactref element="IC1" pad="7"/>
</signal>
<signal name="N$3">
<contactref element="IC2" pad="7"/>
<contactref element="IC1" pad="10"/>
</signal>
<signal name="N$4">
<contactref element="IC2" pad="9"/>
<contactref element="IC1" pad="12"/>
</signal>
<signal name="N$5">
<contactref element="IC2" pad="5"/>
<contactref element="IC1" pad="6"/>
</signal>
<signal name="N$6">
<contactref element="IC2" pad="8"/>
<contactref element="IC1" pad="11"/>
</signal>
<signal name="GND">
<contactref element="IC1" pad="8"/>
<contactref element="IC2" pad="2"/>
<contactref element="R1" pad="1"/>
<contactref element="R2" pad="1"/>
<contactref element="C1" pad="2"/>
<contactref element="D5" pad="A"/>
<contactref element="D8" pad="A"/>
<contactref element="D7" pad="A"/>
<contactref element="D6" pad="A"/>
<contactref element="IC3" pad="GND"/>
<contactref element="C3" pad="2"/>
<contactref element="C4" pad="-"/>
<contactref element="C2" pad="-"/>
<contactref element="R6" pad="1"/>
<contactref element="X2" pad="3"/>
<contactref element="X2" pad="5"/>
<contactref element="H1" pad="B3,2"/>
<contactref element="H2" pad="B3,2"/>
</signal>
<signal name="N$8">
<contactref element="IC1" pad="15"/>
<contactref element="IC2" pad="13"/>
<contactref element="R1" pad="2"/>
</signal>
<signal name="N$9">
<contactref element="IC1" pad="1"/>
<contactref element="IC2" pad="14"/>
<contactref element="R2" pad="2"/>
</signal>
<signal name="N$14">
<contactref element="D1" pad="A"/>
<contactref element="D8" pad="C"/>
<contactref element="IC1" pad="2"/>
<contactref element="X1" pad="1"/>
</signal>
<signal name="N$15">
<contactref element="D2" pad="A"/>
<contactref element="D7" pad="C"/>
<contactref element="IC1" pad="3"/>
<contactref element="X1" pad="2"/>
</signal>
<signal name="N$16">
<contactref element="D3" pad="A"/>
<contactref element="D6" pad="C"/>
<contactref element="IC1" pad="13"/>
<contactref element="X1" pad="3"/>
</signal>
<signal name="N$17">
<contactref element="D4" pad="A"/>
<contactref element="D5" pad="C"/>
<contactref element="IC1" pad="14"/>
<contactref element="X1" pad="4"/>
</signal>
<signal name="N$7">
<contactref element="R3" pad="1"/>
<contactref element="IC2" pad="16"/>
<contactref element="C1" pad="1"/>
</signal>
<signal name="CLOCK">
<contactref element="IC2" pad="18"/>
<contactref element="X2" pad="8"/>
</signal>
<signal name="CW/CCW">
<contactref element="IC2" pad="17"/>
<contactref element="X2" pad="7"/>
</signal>
<signal name="RESET">
<contactref element="IC2" pad="20"/>
<contactref element="R4" pad="1"/>
<contactref element="X2" pad="10"/>
</signal>
<signal name="N$24">
<contactref element="R6" pad="3"/>
<contactref element="IC2" pad="15"/>
</signal>
<signal name="+10-30V">
<contactref element="IC3" pad="IN"/>
<contactref element="D4" pad="C"/>
<contactref element="IC1" pad="4"/>
<contactref element="D3" pad="C"/>
<contactref element="D2" pad="C"/>
<contactref element="D1" pad="C"/>
<contactref element="C2" pad="+"/>
<contactref element="X2" pad="1"/>
</signal>
<signal name="N$26">
<contactref element="R6" pad="2"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="VCC">
<contactref element="IC2" pad="10"/>
<contactref element="IC2" pad="12"/>
<contactref element="IC1" pad="9"/>
<contactref element="R3" pad="2"/>
<contactref element="C4" pad="+"/>
<contactref element="C3" pad="1"/>
<contactref element="IC3" pad="OUT"/>
<contactref element="R4" pad="2"/>
<contactref element="R5" pad="2"/>
<contactref element="R7" pad="2"/>
<contactref element="X2" pad="2"/>
</signal>
<signal name="N$10">
<contactref element="X2" pad="9"/>
<contactref element="IC2" pad="19"/>
</signal>
<signal name="CTRL">
<contactref element="IC2" pad="11"/>
<contactref element="R7" pad="1"/>
<contactref element="X2" pad="4"/>
</signal>
<signal name="HOME">
<contactref element="IC2" pad="3"/>
<contactref element="X2" pad="6"/>
</signal>
<signal name="N$12">
</signal>
</signals>
</board>
</drawing>
</eagle>
