<?xml version="1.0" encoding="utf-8"?>
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<eagle version="6.5.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="50.47" y2="0" width="0" layer="20"/>
<wire x1="50.47" y1="0" x2="50.47" y2="25.39" width="0" layer="20"/>
<wire x1="50.47" y1="25.39" x2="0" y2="25.39" width="0" layer="20"/>
<wire x1="0" y1="25.39" x2="0" y2="0" width="0" layer="20"/>
<text>+5V</text>
<text>GND</text>
<text>OUT</text>
<text>Block Detector</text>
<text>V1.2</text>
<hole x="24.13" y="13.335" drill="3.2"/>
</plain>
<libraries>
<library name="SparkFun-Resistors">
<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="AXIAL-0.4">
<description>1/4W Resistor, 0.4" wide&lt;p&gt;

Yageo CFR series &lt;a href="http://www.yageo.com/pdf/yageo/Leaded-R_CFR_2008.pdf"&gt;http://www.yageo.com/pdf/yageo/Leaded-R_CFR_2008.pdf&lt;/a&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Capacitors">
<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="CAP-PTH-SMALLEZ">
<description>This is the "EZ" version of the .1" spaced ceramic thru-hole cap.&lt;br&gt;
It has reduced top mask to make it harder to put the component on the wrong side of the board.</description>
</package>
</packages>
</library>
<library name="SparkFun-DiscreteSemi">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find discrete semiconductors- transistors, diodes, TRIACs, optoisolators, 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="DIODE-1N4148">
</package>
</packages>
</library>
<library name="Railroad">
<packages>
<package name="DIL08">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
<package name="57P1822">
<description>&lt;h3&gt;Vitec&lt;/h3&gt;
&lt;P&gt;57P1822&lt;/p&gt;</description>
</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="1X01NS">
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="TO92-EBC-OVAL">
<description>&lt;b&gt;TO-92&lt;/b&gt;&lt;p&gt;
grid 5.08 mm</description>
</package>
</packages>
</library>
</libraries>
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</attributes>
<variantdefs>
</variantdefs>
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<element name="R1" library="SparkFun-Resistors" package="AXIAL-0.4" value="10k">
<attribute name="NAME"/>
</element>
<element name="R2" library="SparkFun-Resistors" package="AXIAL-0.4" value="1M">
<attribute name="NAME"/>
</element>
<element name="C1" library="SparkFun-Capacitors" package="CAP-PTH-SMALLEZ" value="2.2uf">
<attribute name="NAME"/>
</element>
<element name="T1" library="adafruit" package="TO92-EBC-OVAL" value="2N3904">
<attribute name="NAME"/>
</element>
<element name="D1" library="SparkFun-DiscreteSemi" package="DIODE-1N4148" value="1N4148">
<attribute name="NAME"/>
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<element name="C2" library="SparkFun-Capacitors" package="CAP-PTH-SMALLEZ" value="4.7uf">
<attribute name="NAME"/>
</element>
<element name="R3" library="SparkFun-Resistors" package="AXIAL-0.4" value="10k">
<attribute name="NAME"/>
</element>
<element name="R4" library="SparkFun-Resistors" package="AXIAL-0.4" value="10k">
<attribute name="NAME"/>
</element>
<element name="R5" library="SparkFun-Resistors" package="AXIAL-0.4" value="470k">
<attribute name="NAME"/>
</element>
<element name="C3" library="SparkFun-Capacitors" package="CAP-PTH-SMALLEZ" value=".01uf">
<attribute name="NAME"/>
</element>
<element name="C4" library="SparkFun-Capacitors" package="CAP-PTH-SMALLEZ" value="4.7uf">
<attribute name="NAME"/>
</element>
<element name="R6" library="SparkFun-Resistors" package="AXIAL-0.4" value="15k">
<attribute name="NAME"/>
</element>
<element name="IC1" library="Railroad" package="DIL08" value="LM2903">
<attribute name="NAME"/>
</element>
<element name="L1" library="Railroad" package="57P1822" value="57P1822">
<attribute name="NAME"/>
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<element name="JP1" library="SparkFun-Connectors" package="1X01NS" value="M01SMDNS"/>
<element name="JP2" library="SparkFun-Connectors" package="1X01NS" value="M01SMDNS"/>
<element name="JP3" library="SparkFun-Connectors" package="1X01NS" value="M01SMDNS"/>
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<signal name="V+">
<contactref element="IC1" pad="8"/>
<contactref element="C3" pad="2"/>
<contactref element="C4" pad="2"/>
<contactref element="R5" pad="P$2"/>
<contactref element="R3" pad="P$2"/>
<contactref element="R6" pad="P$2"/>
<contactref element="R1" pad="P$2"/>
<contactref element="JP3" pad="1"/>
</signal>
<signal name="GND">
<contactref element="IC1" pad="4"/>
<contactref element="R2" pad="P$1"/>
<contactref element="C3" pad="1"/>
<contactref element="C4" pad="1"/>
<contactref element="R4" pad="P$1"/>
<contactref element="C2" pad="2"/>
<contactref element="JP2" pad="1"/>
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<signal name="N$7">
<contactref element="R3" pad="P$1"/>
<contactref element="R4" pad="P$2"/>
<contactref element="IC1" pad="3"/>
<contactref element="IC1" pad="6"/>
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<signal name="N$8">
<contactref element="C2" pad="1"/>
<contactref element="R5" pad="P$1"/>
<contactref element="IC1" pad="1"/>
<contactref element="IC1" pad="5"/>
</signal>
<signal name="N$3">
<contactref element="C1" pad="2"/>
<contactref element="R1" pad="P$1"/>
<contactref element="T1" pad="C"/>
</signal>
<signal name="N$4">
<contactref element="D1" pad="A"/>
<contactref element="L1" pad="P$2"/>
<contactref element="IC1" pad="2"/>
<contactref element="T1" pad="E"/>
<contactref element="C1" pad="1"/>
<contactref element="R2" pad="P$2"/>
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<signal name="N$1">
<contactref element="L1" pad="P$1"/>
<contactref element="T1" pad="B"/>
<contactref element="D1" pad="C"/>
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<signal name="OUT">
<contactref element="IC1" pad="7"/>
<contactref element="R6" pad="P$1"/>
<contactref element="JP1" pad="1"/>
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