<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.1.0">
<drawing>
<board>
<plain>
<wire x1="1.27" y1="0" x2="99.06" y2="0" width="0" layer="20"/>
<wire x1="99.06" y1="0" x2="100.33" y2="1.27" width="0" layer="20" curve="90"/>
<wire x1="100.33" y1="1.27" x2="100.33" y2="49.53" width="0" layer="20"/>
<wire x1="100.33" y1="49.53" x2="99.06" y2="50.8" width="0" layer="20" curve="90"/>
<wire x1="99.06" y1="50.8" x2="1.27" y2="50.8" width="0" layer="20"/>
<wire x1="1.27" y1="50.8" x2="0" y2="49.53" width="0" layer="20" curve="90"/>
<wire x1="0" y1="49.53" x2="0" y2="1.27" width="0" layer="20"/>
<wire x1="0" y1="1.27" x2="1.27" y2="0" width="0" layer="20" curve="90"/>
<hole x="3.81" y="46.99" drill="3.175"/>
<hole x="3.81" y="3.81" drill="3.175"/>
<hole x="96.52" y="3.81" drill="3.175"/>
<hole x="96.52" y="46.99" drill="3.175"/>
<text>12V GND 5V</text>
<text>INPUT ROWS</text>
<text>INPUT COLUMNS</text>
</plain>
<libraries>
<library name="WV Arcade">
<description>WV Arcade</description>
<packages>
<package name="ERICCONNERAPPS">
</package>
<package name="KK-156-9">
</package>
<package name="KK-156-3">
</package>
</packages>
</library>
<library name="SparkFun-Passives">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find resistors, capacitors, inductors, test points, jumper pads, etc.&lt;br&gt;&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is the end user's responsibility to ensure correctness and suitablity for a given componet or application. If you enjoy using this library, please buy one of our products at www.sparkfun.com.
&lt;br&gt;&lt;br&gt;
&lt;b&gt;Licensing:&lt;/b&gt; CC v3.0 Share-Alike You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage.</description>
<packages>
<package name="0805">
</package>
</packages>
</library>
<library name="New_STD_Library">
<packages>
<package name="SOD-80">
</package>
<package name="0805">
</package>
<package name="SOIC-16">
</package>
<package name="SOIC-18W">
</package>
<package name="SOIC-20W">
</package>
<package name="SOIC-14">
</package>
</packages>
</library>
<library name="SparkFun-Connectors">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find connectors and sockets- basically anything that can be plugged into or onto.&lt;br&gt;&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is the end user's responsibility to ensure correctness and suitablity for a given componet or application. If you enjoy using this library, please buy one of our products at www.sparkfun.com.
&lt;br&gt;&lt;br&gt;
&lt;b&gt;Licensing:&lt;/b&gt; CC v3.0 Share-Alike You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage.</description>
<packages>
<package name="2X10">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="BORDER1" library="WV Arcade" package="ERICCONNERAPPS" value="BORDER_LETTER">
<attribute name="VERSION" value="1.0.3"/>
<attribute name="DESIGNER" value="Eric Conner Apps"/>
<attribute name="YEAR" value="2016"/>
<attribute name="PROJECT" value="Pinduino Input Board"/>
</element>
<element name="C9" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C19" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C20" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C21" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C13" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C12" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C11" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C10" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C8" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C7" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C6" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C17" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C16" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C15" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C14" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="C18" library="SparkFun-Passives" package="0805" value="470p">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="399-1142-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="50v"/>
</element>
<element name="D1" library="New_STD_Library" package="SOD-80" value="LL4148">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="LL4148FSCT-ND"/>
</element>
<element name="D2" library="New_STD_Library" package="SOD-80" value="LL4148">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="LL4148FSCT-ND"/>
</element>
<element name="D3" library="New_STD_Library" package="SOD-80" value="LL4148">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="LL4148FSCT-ND"/>
</element>
<element name="D4" library="New_STD_Library" package="SOD-80" value="LL4148">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="LL4148FSCT-ND"/>
</element>
<element name="D5" library="New_STD_Library" package="SOD-80" value="LL4148">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="LL4148FSCT-ND"/>
</element>
<element name="D6" library="New_STD_Library" package="SOD-80" value="LL4148">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="LL4148FSCT-ND"/>
</element>
<element name="D7" library="New_STD_Library" package="SOD-80" value="LL4148">
<attribute name="NAME"/>
<attribute name="DIGIKEY" value="LL4148FSCT-ND"/>
</element>
<element name="D8" library="New_STD_Library" package="SOD-80" value="LL4148">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="DIGIKEY" value="LL4148FSCT-ND"/>
</element>
<element name="INPUT_COLUMNS" library="WV Arcade" package="KK-156-9" value="M09"/>
<element name="INPUT_ROWS" library="WV Arcade" package="KK-156-9" value="M09"/>
<element name="R25" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R18" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R19" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R20" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R9" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R10" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R11" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R12" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R21" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R22" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R23" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R26" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R24" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R13" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R14" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R15" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R16" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R3" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R27" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R6" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R7" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R8" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R28" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R29" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R30" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R31" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="R32" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R17" library="New_STD_Library" package="0805" value="1k">
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="WATT" value=""/>
<attribute name="DIGIKEY" value="541-1.0KACT-ND"/>
<attribute name="NAME"/>
</element>
<element name="BACKPACK" library="SparkFun-Connectors" package="2X10" value="M10X2">
<attribute name="NAME"/>
</element>
<element name="U1" library="New_STD_Library" package="SOIC-16" value="74237D">
<attribute name="VALUE" value="74237D"/>
<attribute name="DIGIKEY" value="568-8139-6-ND"/>
</element>
<element name="U2" library="New_STD_Library" package="SOIC-18W" value="ULN2803ADW">
<attribute name="VALUE" value="ULN2803ADW"/>
<attribute name="DIGIKEY" value="296-15777-1-ND"/>
</element>
<element name="U3" library="New_STD_Library" package="SOIC-20W" value="74240DW">
<attribute name="DIGIKEY" value="568-7633-1-ND"/>
</element>
<element name="U4" library="New_STD_Library" package="SOIC-14" value="LM339D">
<attribute name="DIGIKEY" value="LM339DGOS-ND"/>
</element>
<element name="U5" library="New_STD_Library" package="SOIC-14" value="LM339D">
<attribute name="DIGIKEY" value="LM339DGOS-ND"/>
</element>
<element name="C1" library="SparkFun-Passives" package="0805" value="1.0uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="DIGIKEY" value="399-9160-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="6.3v"/>
</element>
<element name="C2" library="SparkFun-Passives" package="0805" value="1.0uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="DIGIKEY" value="399-9160-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="6.3v"/>
</element>
<element name="C3" library="SparkFun-Passives" package="0805" value="1.0uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="DIGIKEY" value="399-9160-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="6.3v"/>
</element>
<element name="C4" library="SparkFun-Passives" package="0805" value="1.0uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="DIGIKEY" value="399-9160-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="6.3v"/>
</element>
<element name="C5" library="SparkFun-Passives" package="0805" value="1.0uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="DIGIKEY" value="399-9160-1-ND"/>
<attribute name="ATTRIBUTE" value="0805"/>
<attribute name="VOLTAGE" value="6.3v"/>
</element>
<element name="POWER" library="WV Arcade" package="KK-156-3" value="M03"/>
</elements>
<signals>
<signal name="GND">
<contactref element="BACKPACK" pad="2"/>
<contactref element="BACKPACK" pad="4"/>
<contactref element="BACKPACK" pad="1"/>
<contactref element="BACKPACK" pad="20"/>
<contactref element="BACKPACK" pad="18"/>
<contactref element="BACKPACK" pad="19"/>
<contactref element="BACKPACK" pad="14"/>
<contactref element="BACKPACK" pad="12"/>
<contactref element="BACKPACK" pad="10"/>
<contactref element="U1" pad="8"/>
<contactref element="U2" pad="9"/>
<contactref element="U3" pad="10"/>
<contactref element="U4" pad="12"/>
<contactref element="U5" pad="12"/>
<contactref element="C6" pad="2"/>
<contactref element="C7" pad="2"/>
<contactref element="C8" pad="2"/>
<contactref element="C9" pad="2"/>
<contactref element="C14" pad="2"/>
<contactref element="C15" pad="2"/>
<contactref element="C16" pad="2"/>
<contactref element="C17" pad="2"/>
<contactref element="C18" pad="2"/>
<contactref element="C19" pad="2"/>
<contactref element="C20" pad="2"/>
<contactref element="C21" pad="2"/>
<contactref element="C10" pad="2"/>
<contactref element="C11" pad="2"/>
<contactref element="C12" pad="2"/>
<contactref element="C13" pad="2"/>
<contactref element="C5" pad="1"/>
<contactref element="C4" pad="1"/>
<contactref element="C3" pad="1"/>
<contactref element="C2" pad="1"/>
<contactref element="C1" pad="1"/>
<contactref element="POWER" pad="2"/>
<contactref element="U1" pad="5"/>
</signal>
<signal name="BLANK">
<contactref element="BACKPACK" pad="16"/>
</signal>
<signal name="D1">
<contactref element="BACKPACK" pad="3"/>
<contactref element="U1" pad="1"/>
<contactref element="U3" pad="18"/>
</signal>
<signal name="D2">
<contactref element="BACKPACK" pad="5"/>
<contactref element="U1" pad="2"/>
<contactref element="U3" pad="16"/>
</signal>
<signal name="D3">
<contactref element="BACKPACK" pad="7"/>
<contactref element="U1" pad="3"/>
<contactref element="U3" pad="14"/>
</signal>
<signal name="D4">
<contactref element="BACKPACK" pad="9"/>
<contactref element="U3" pad="12"/>
</signal>
<signal name="D5">
<contactref element="BACKPACK" pad="11"/>
<contactref element="U3" pad="9"/>
</signal>
<signal name="D6">
<contactref element="BACKPACK" pad="13"/>
<contactref element="U3" pad="7"/>
</signal>
<signal name="D7">
<contactref element="BACKPACK" pad="15"/>
<contactref element="U3" pad="5"/>
</signal>
<signal name="D8">
<contactref element="BACKPACK" pad="17"/>
<contactref element="U3" pad="3"/>
</signal>
<signal name="SW_ROW">
<contactref element="BACKPACK" pad="8"/>
<contactref element="U3" pad="1"/>
<contactref element="U3" pad="19"/>
</signal>
<signal name="SW_COL">
<contactref element="BACKPACK" pad="6"/>
<contactref element="U1" pad="4"/>
</signal>
<signal name="N$1">
<contactref element="U1" pad="15"/>
<contactref element="U2" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="U1" pad="14"/>
<contactref element="U2" pad="2"/>
</signal>
<signal name="N$3">
<contactref element="U1" pad="13"/>
<contactref element="U2" pad="3"/>
</signal>
<signal name="N$4">
<contactref element="U1" pad="12"/>
<contactref element="U2" pad="4"/>
</signal>
<signal name="N$5">
<contactref element="U1" pad="11"/>
<contactref element="U2" pad="5"/>
</signal>
<signal name="N$6">
<contactref element="U1" pad="10"/>
<contactref element="U2" pad="6"/>
</signal>
<signal name="N$7">
<contactref element="U1" pad="9"/>
<contactref element="U2" pad="7"/>
</signal>
<signal name="N$8">
<contactref element="U1" pad="7"/>
<contactref element="U2" pad="8"/>
</signal>
<signal name="N$9">
<contactref element="U2" pad="18"/>
<contactref element="R25" pad="1"/>
<contactref element="INPUT_COLUMNS" pad="1"/>
<contactref element="C14" pad="1"/>
</signal>
<signal name="N$10">
<contactref element="U2" pad="17"/>
<contactref element="R26" pad="1"/>
<contactref element="INPUT_COLUMNS" pad="2"/>
<contactref element="C15" pad="1"/>
</signal>
<signal name="N$13">
<contactref element="U2" pad="16"/>
<contactref element="R27" pad="1"/>
<contactref element="INPUT_COLUMNS" pad="3"/>
<contactref element="C16" pad="1"/>
</signal>
<signal name="N$14">
<contactref element="U2" pad="15"/>
<contactref element="R28" pad="1"/>
<contactref element="INPUT_COLUMNS" pad="5"/>
<contactref element="C17" pad="1"/>
</signal>
<signal name="N$15">
<contactref element="U2" pad="14"/>
<contactref element="R29" pad="1"/>
<contactref element="INPUT_COLUMNS" pad="6"/>
<contactref element="C18" pad="1"/>
</signal>
<signal name="N$16">
<contactref element="U2" pad="13"/>
<contactref element="R30" pad="1"/>
<contactref element="INPUT_COLUMNS" pad="7"/>
<contactref element="C19" pad="1"/>
</signal>
<signal name="N$17">
<contactref element="U2" pad="12"/>
<contactref element="R31" pad="1"/>
<contactref element="INPUT_COLUMNS" pad="8"/>
<contactref element="C20" pad="1"/>
</signal>
<signal name="N$18">
<contactref element="U2" pad="11"/>
<contactref element="R32" pad="1"/>
<contactref element="INPUT_COLUMNS" pad="9"/>
<contactref element="C21" pad="1"/>
</signal>
<signal name="VCC">
<contactref element="U1" pad="16"/>
<contactref element="U3" pad="20"/>
<contactref element="R1" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="R3" pad="2"/>
<contactref element="R4" pad="2"/>
<contactref element="R5" pad="2"/>
<contactref element="R6" pad="2"/>
<contactref element="R7" pad="2"/>
<contactref element="R8" pad="2"/>
<contactref element="U4" pad="7"/>
<contactref element="U4" pad="5"/>
<contactref element="U4" pad="9"/>
<contactref element="U4" pad="11"/>
<contactref element="U5" pad="7"/>
<contactref element="U5" pad="5"/>
<contactref element="U5" pad="9"/>
<contactref element="U5" pad="11"/>
<contactref element="U1" pad="6"/>
<contactref element="C1" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="C3" pad="2"/>
<contactref element="C4" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="POWER" pad="3"/>
</signal>
<signal name="12V">
<contactref element="U2" pad="10"/>
<contactref element="R25" pad="2"/>
<contactref element="R26" pad="2"/>
<contactref element="R27" pad="2"/>
<contactref element="R28" pad="2"/>
<contactref element="R29" pad="2"/>
<contactref element="R30" pad="2"/>
<contactref element="R31" pad="2"/>
<contactref element="R32" pad="2"/>
<contactref element="R17" pad="2"/>
<contactref element="R18" pad="2"/>
<contactref element="R19" pad="2"/>
<contactref element="R20" pad="2"/>
<contactref element="R21" pad="2"/>
<contactref element="R22" pad="2"/>
<contactref element="R23" pad="2"/>
<contactref element="R24" pad="2"/>
<contactref element="U4" pad="3"/>
<contactref element="U5" pad="3"/>
<contactref element="POWER" pad="1"/>
</signal>
<signal name="N$11">
<contactref element="INPUT_ROWS" pad="1"/>
<contactref element="D1" pad="C"/>
</signal>
<signal name="N$12">
<contactref element="INPUT_ROWS" pad="3"/>
<contactref element="D2" pad="C"/>
</signal>
<signal name="N$19">
<contactref element="INPUT_ROWS" pad="4"/>
<contactref element="D3" pad="C"/>
</signal>
<signal name="N$20">
<contactref element="INPUT_ROWS" pad="5"/>
<contactref element="D4" pad="C"/>
</signal>
<signal name="N$21">
<contactref element="INPUT_ROWS" pad="9"/>
<contactref element="D8" pad="C"/>
</signal>
<signal name="N$22">
<contactref element="INPUT_ROWS" pad="8"/>
<contactref element="D7" pad="C"/>
</signal>
<signal name="N$23">
<contactref element="INPUT_ROWS" pad="7"/>
<contactref element="D6" pad="C"/>
</signal>
<signal name="N$24">
<contactref element="INPUT_ROWS" pad="6"/>
<contactref element="D5" pad="C"/>
</signal>
<signal name="N$25">
<contactref element="U3" pad="2"/>
<contactref element="U4" pad="1"/>
<contactref element="R1" pad="1"/>
</signal>
<signal name="N$26">
<contactref element="U3" pad="4"/>
<contactref element="U4" pad="2"/>
<contactref element="R2" pad="1"/>
</signal>
<signal name="N$27">
<contactref element="U3" pad="6"/>
<contactref element="U4" pad="14"/>
<contactref element="R3" pad="1"/>
</signal>
<signal name="N$28">
<contactref element="U3" pad="8"/>
<contactref element="U4" pad="13"/>
<contactref element="R4" pad="1"/>
</signal>
<signal name="N$29">
<contactref element="U3" pad="11"/>
<contactref element="U5" pad="1"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="N$30">
<contactref element="U3" pad="13"/>
<contactref element="U5" pad="2"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="N$31">
<contactref element="U3" pad="15"/>
<contactref element="U5" pad="14"/>
<contactref element="R7" pad="1"/>
</signal>
<signal name="N$32">
<contactref element="U3" pad="17"/>
<contactref element="U5" pad="13"/>
<contactref element="R8" pad="1"/>
</signal>
<signal name="N$37">
<contactref element="U4" pad="10"/>
<contactref element="R12" pad="1"/>
</signal>
<signal name="N$38">
<contactref element="U4" pad="8"/>
<contactref element="R11" pad="1"/>
</signal>
<signal name="N$39">
<contactref element="U4" pad="4"/>
<contactref element="R10" pad="1"/>
</signal>
<signal name="N$40">
<contactref element="U4" pad="6"/>
<contactref element="R9" pad="1"/>
</signal>
<signal name="N$49">
<contactref element="U5" pad="8"/>
<contactref element="R15" pad="1"/>
</signal>
<signal name="N$50">
<contactref element="U5" pad="4"/>
<contactref element="R14" pad="1"/>
</signal>
<signal name="N$51">
<contactref element="U5" pad="6"/>
<contactref element="R13" pad="1"/>
</signal>
<signal name="N$52">
<contactref element="U5" pad="10"/>
<contactref element="R16" pad="1"/>
</signal>
<signal name="N$33">
<contactref element="R9" pad="2"/>
<contactref element="R17" pad="1"/>
<contactref element="C6" pad="1"/>
<contactref element="D1" pad="A"/>
</signal>
<signal name="N$34">
<contactref element="R10" pad="2"/>
<contactref element="R18" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="D2" pad="A"/>
</signal>
<signal name="N$35">
<contactref element="R12" pad="2"/>
<contactref element="R20" pad="1"/>
<contactref element="C9" pad="1"/>
<contactref element="D4" pad="A"/>
</signal>
<signal name="N$36">
<contactref element="R11" pad="2"/>
<contactref element="R19" pad="1"/>
<contactref element="C8" pad="1"/>
<contactref element="D3" pad="A"/>
</signal>
<signal name="N$42">
<contactref element="R13" pad="2"/>
<contactref element="R21" pad="1"/>
<contactref element="C10" pad="1"/>
<contactref element="D5" pad="A"/>
</signal>
<signal name="N$43">
<contactref element="R14" pad="2"/>
<contactref element="R22" pad="1"/>
<contactref element="C11" pad="1"/>
<contactref element="D6" pad="A"/>
</signal>
<signal name="N$44">
<contactref element="R16" pad="2"/>
<contactref element="R24" pad="1"/>
<contactref element="C13" pad="1"/>
<contactref element="D8" pad="A"/>
</signal>
<signal name="N$45">
<contactref element="R15" pad="2"/>
<contactref element="R23" pad="1"/>
<contactref element="C12" pad="1"/>
<contactref element="D7" pad="A"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
