<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.4">
<drawing>
<board>
<plain>
<wire x1="27.94" y1="55.88" x2="67.31" y2="55.88" width="0.4064" layer="20"/>
<wire x1="67.31" y1="55.88" x2="67.31" y2="12.7" width="0.4064" layer="20"/>
<wire x1="67.31" y1="12.7" x2="27.94" y2="12.7" width="0.4064" layer="20"/>
<wire x1="27.94" y1="12.7" x2="27.94" y2="55.88" width="0.4064" layer="20"/>
<text>C</text>
<text>1</text>
<text>2</text>
<text>3</text>
<text>4</text>
<text>5</text>
<text>6</text>
<text>7</text>
<text>8</text>
<text>9</text>
<text>0</text>
<text>A</text>
<text>B</text>
<text>Button Matrix</text>
<text>31Dec2016</text>
<text>v1</text>
<text>using NKK CB315FP
Switches</text>
</plain>
<libraries>
<library name="NKK">
<packages>
<package name="CB315FP">
</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; Creative Commons ShareAlike 4.0 International - https://creativecommons.org/licenses/by-sa/4.0/ 
&lt;br&gt;&lt;br&gt;
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="1X13_LOCK_NO_SILK">
</package>
</packages>
</library>
<library name="SparkFun">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
We've spent an enormous amount of time creating and checking these footprints and parts. 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="STAND-OFF-TIGHT">
<description>&lt;b&gt;Stand Off&lt;/b&gt;&lt;p&gt;
This is the mechanical footprint for a #4 phillips button head screw. Use the keepout ring to avoid running the screw head into surrounding components. SKU : PRT-00447</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="1" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="4" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="7" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="A" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="2" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="5" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="8" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="0" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="3" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="6" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="9" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="B" library="NKK" package="CB315FP" value="TACTILE"/>
<element name="J1" library="SparkFun-Connectors" package="1X13_LOCK_NO_SILK" value=""/>
<element name="U$1" library="SparkFun" package="STAND-OFF-TIGHT" value=""/>
<element name="U$2" library="SparkFun" package="STAND-OFF-TIGHT" value=""/>
<element name="U$3" library="SparkFun" package="STAND-OFF-TIGHT" value=""/>
<element name="U$4" library="SparkFun" package="STAND-OFF-TIGHT" value=""/>
</elements>
<signals>
<signal name="N$1">
<contactref element="1" pad="P$2"/>
<contactref element="4" pad="P$1"/>
</signal>
<signal name="N$2">
<contactref element="4" pad="P$2"/>
<contactref element="7" pad="P$1"/>
</signal>
<signal name="C">
<contactref element="7" pad="P$2"/>
<contactref element="A" pad="P$1"/>
<contactref element="8" pad="P$2"/>
<contactref element="0" pad="P$1"/>
<contactref element="9" pad="P$2"/>
<contactref element="B" pad="P$1"/>
<contactref element="J1" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="2" pad="P$2"/>
<contactref element="5" pad="P$1"/>
</signal>
<signal name="N$5">
<contactref element="5" pad="P$2"/>
<contactref element="8" pad="P$1"/>
</signal>
<signal name="N$7">
<contactref element="3" pad="P$2"/>
<contactref element="6" pad="P$1"/>
</signal>
<signal name="N$8">
<contactref element="6" pad="P$2"/>
<contactref element="9" pad="P$1"/>
</signal>
<signal name="1">
<contactref element="1" pad="P$3"/>
<contactref element="J1" pad="2"/>
</signal>
<signal name="2">
<contactref element="2" pad="P$3"/>
<contactref element="J1" pad="3"/>
</signal>
<signal name="3">
<contactref element="3" pad="P$3"/>
<contactref element="J1" pad="4"/>
</signal>
<signal name="4">
<contactref element="4" pad="P$3"/>
<contactref element="J1" pad="5"/>
</signal>
<signal name="5">
<contactref element="5" pad="P$3"/>
<contactref element="J1" pad="6"/>
</signal>
<signal name="6">
<contactref element="6" pad="P$3"/>
<contactref element="J1" pad="7"/>
</signal>
<signal name="7">
<contactref element="7" pad="P$3"/>
<contactref element="J1" pad="8"/>
</signal>
<signal name="8">
<contactref element="8" pad="P$3"/>
<contactref element="J1" pad="9"/>
</signal>
<signal name="9">
<contactref element="9" pad="P$3"/>
<contactref element="J1" pad="10"/>
</signal>
<signal name="0">
<contactref element="0" pad="P$4"/>
<contactref element="J1" pad="11"/>
</signal>
<signal name="A">
<contactref element="A" pad="P$4"/>
<contactref element="J1" pad="12"/>
</signal>
<signal name="B">
<contactref element="B" pad="P$4"/>
<contactref element="J1" pad="13"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
