<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.7.0">
<drawing>
<board>
<plain>
<wire x1="-0.635" y1="-0.3175" x2="34.2775" y2="-0.3175" width="0.254" layer="20"/>
<wire x1="34.2775" y1="-0.3175" x2="34.2775" y2="16.1825" width="0.254" layer="20"/>
<wire x1="34.2775" y1="16.1825" x2="-0.635" y2="16.1825" width="0.254" layer="20"/>
<wire x1="-0.635" y1="16.1825" x2="-0.635" y2="-0.3175" width="0.254" layer="20"/>
<hole x="2.54" y="2.54" drill="3.2"/>
<hole x="31.4325" y="2.54" drill="3.2"/>
<text>EXT.</text>
<text>INT.</text>
<text>M1</text>
<text>M2</text>
<text>DropBOB.ca</text>
<text>Half Bridge 
Control Board
V1.0 2018-05-20
Max 2amp drive</text>
<text>OFF</text>
<text>4.5-36V</text>
</plain>
<libraries>
<library name="pinhead">
<description>&lt;b&gt;Pin Header Connectors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="1X03">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X04">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="terminal header">
<packages>
<package name="CONN_282834-2">
</package>
</packages>
</library>
<library name="H-Bridge SN754410NE">
<packages>
<package name="PDIP16">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="voltage-regulator">
<packages>
<package name="T03B">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="5V/EXT." library="pinhead" package="1X03" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="CTRL_IN" library="pinhead" package="1X04" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="EXT_PWR" library="terminal header" package="CONN_282834-2" value="282834-2">
<attribute name="MANUFACTURER_PART_NUMBER" value="2828342"/>
<attribute name="VENDOR" value="Tyco Electronics"/>
<attribute name="NAME"/>
</element>
<element name="IC1" library="H-Bridge SN754410NE" package="PDIP16" value="SN754410NEH-BRIDGE">
<attribute name="MF" value="Texas Instruments"/>
<attribute name="MPN" value="SN754410NE"/>
<attribute name="DIGI-KEY" value="296-9911-5-ND"/>
</element>
<element name="MOTOR" library="terminal header" package="CONN_282834-2" value="282834-2">
<attribute name="MANUFACTURER_PART_NUMBER" value="2828342"/>
<attribute name="VENDOR" value="Tyco Electronics"/>
<attribute name="NAME"/>
</element>
<element name="3.3V_REG" library="voltage-regulator" package="T03B" value="LMS1585ACT-3.3/NOPB">
<attribute name="MANUFACTURER_PART_NUMBER" value="LMS1585ACT3.3NOPB"/>
<attribute name="VENDOR" value="National Semiconductor"/>
</element>
<element name="3.3VREG" library="pinhead" package="1X03" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="FAN" library="terminal header" package="CONN_282834-2" value="282834-2">
<attribute name="MANUFACTURER_PART_NUMBER" value="2828342"/>
<attribute name="VENDOR" value="Tyco Electronics"/>
<attribute name="NAME"/>
</element>
</elements>
<signals>
<signal name="VCC">
<contactref element="CTRL_IN" pad="1"/>
<contactref element="5V/EXT." pad="3"/>
<contactref element="IC1" pad="1"/>
<contactref element="IC1" pad="16"/>
<contactref element="IC1" pad="9"/>
<contactref element="FAN" pad="1"/>
</signal>
<signal name="M1">
<contactref element="CTRL_IN" pad="2"/>
<contactref element="IC1" pad="2"/>
<contactref element="IC1" pad="15"/>
</signal>
<signal name="M2">
<contactref element="CTRL_IN" pad="3"/>
<contactref element="IC1" pad="7"/>
<contactref element="IC1" pad="10"/>
</signal>
<signal name="GND">
<contactref element="CTRL_IN" pad="4"/>
<contactref element="EXT_PWR" pad="1"/>
<contactref element="IC1" pad="4"/>
<contactref element="IC1" pad="5"/>
<contactref element="IC1" pad="12"/>
<contactref element="IC1" pad="13"/>
<contactref element="3.3V_REG" pad="1"/>
<contactref element="FAN" pad="2"/>
</signal>
<signal name="N$1">
<contactref element="EXT_PWR" pad="2"/>
<contactref element="5V/EXT." pad="1"/>
</signal>
<signal name="PWR">
<contactref element="5V/EXT." pad="2"/>
<contactref element="3.3VREG" pad="2"/>
</signal>
<signal name="N$5">
<contactref element="IC1" pad="3"/>
<contactref element="IC1" pad="14"/>
<contactref element="MOTOR" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="MOTOR" pad="2"/>
<contactref element="IC1" pad="6"/>
<contactref element="IC1" pad="11"/>
</signal>
<signal name="ON">
<contactref element="3.3VREG" pad="1"/>
<contactref element="3.3V_REG" pad="3"/>
</signal>
<signal name="VCC2">
<contactref element="3.3V_REG" pad="2"/>
<contactref element="IC1" pad="8"/>
<contactref element="3.3VREG" pad="3"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
