<?xml version="1.0" encoding="utf-8"?>
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<eagle version="9.0.0">
<drawing>
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<text>GND</text>
<text>5V</text>
<text>TX</text>
<text>RX</text>
</plain>
<libraries>
<library name="SparkFun-Capacitors">
<description>&lt;h3&gt;SparkFun Capacitors&lt;/h3&gt;
This library contains capacitors. 
&lt;br&gt;
&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is &lt;b&gt; the end user's responsibility&lt;/b&gt; to ensure correctness and suitablity for a given componet or application. 
&lt;br&gt;
&lt;br&gt;If you enjoy using this library, please buy one of our products at &lt;a href=" www.sparkfun.com"&gt;SparkFun.com&lt;/a&gt;.
&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="0603">
<description>&lt;p&gt;&lt;b&gt;Generic 1608 (0603) package&lt;/b&gt;&lt;/p&gt;
&lt;p&gt;0.2mm courtyard excess rounded to nearest 0.05mm.&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-IC-Amplifiers">
<description>&lt;h3&gt;SparkFun Amplifiers&lt;/h3&gt;
This library contains analog amplifiers, mostly operational amplifiers but also has some headphone and audio amps with more specific applications.
&lt;p&gt;Contents:
&lt;ul&gt;&lt;li&gt;Op-amps&lt;/li&gt;
&lt;li&gt;Headphone amps&lt;/li&gt;
&lt;li&gt;Class D amps&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is &lt;b&gt; the end user's responsibility&lt;/b&gt; to ensure correctness and suitablity for a given componet or application. 
&lt;br&gt;
&lt;br&gt;If you enjoy using this library, please buy one of our products at &lt;a href=" www.sparkfun.com"&gt;SparkFun.com&lt;/a&gt;.
&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="DIP08">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Connectors">
<description>&lt;h3&gt;SparkFun Connectors&lt;/h3&gt;
This library contains electrically-functional connectors. 
&lt;br&gt;
&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is &lt;b&gt; the end user's responsibility&lt;/b&gt; to ensure correctness and suitablity for a given componet or application. 
&lt;br&gt;
&lt;br&gt;If you enjoy using this library, please buy one of our products at &lt;a href=" www.sparkfun.com"&gt;SparkFun.com&lt;/a&gt;.
&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="1X04">
<description>&lt;h3&gt;Plated Through Hole - 4 Pin&lt;/h3&gt;
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:4&lt;/li&gt;
&lt;li&gt;Pin pitch:0.1"&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;CONN_04&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-DiscreteSemi">
<description>&lt;h3&gt;SparkFun Discrete Semiconductors&lt;/h3&gt;
This library contains diodes, optoisolators, TRIACs, MOSFETs, transistors, 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 &lt;b&gt; the end user's responsibility&lt;/b&gt; to ensure correctness and suitablity for a given componet or application. 
&lt;br&gt;
&lt;br&gt;If you enjoy using this library, please buy one of our products at &lt;a href=" www.sparkfun.com"&gt;SparkFun.com&lt;/a&gt;.
&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="SOT23-3">
<description>SOT23-3</description>
</package>
</packages>
</library>
<library name="SparkFun-Resistors">
<description>&lt;h3&gt;SparkFun Resistors&lt;/h3&gt;
This library contains resistors. Reference designator:R. 
&lt;br&gt;
&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is &lt;b&gt; the end user's responsibility&lt;/b&gt; to ensure correctness and suitablity for a given componet or application. 
&lt;br&gt;
&lt;br&gt;If you enjoy using this library, please buy one of our products at &lt;a href=" www.sparkfun.com"&gt;SparkFun.com&lt;/a&gt;.
&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="0603">
<description>&lt;p&gt;&lt;b&gt;Generic 1608 (0603) package&lt;/b&gt;&lt;/p&gt;
&lt;p&gt;0.2mm courtyard excess rounded to nearest 0.05mm.&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="PS12">
</package>
</packages>
</library>
</libraries>
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<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="C2" library="SparkFun-Capacitors" package="0603" value="">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="C3" library="SparkFun-Capacitors" package="0603" value="">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="C4" library="SparkFun-Capacitors" package="0603" value="">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="IC1" library="SparkFun-IC-Amplifiers" package="DIP08" value="OP-AMP">
<attribute name="PROD_ID" value="NA-XXXXX"/>
</element>
<element name="J1" library="SparkFun-Connectors" package="1X04" value="">
<attribute name="PROD_ID" value="CONN-09696"/>
</element>
<element name="Q2" library="SparkFun-DiscreteSemi" package="SOT23-3" value="">
<attribute name="PROD_ID" value="TRANS-11308"/>
</element>
<element name="Q3" library="SparkFun-DiscreteSemi" package="SOT23-3" value="">
<attribute name="PROD_ID" value="TRANS-11308"/>
</element>
<element name="Q4" library="SparkFun-DiscreteSemi" package="SOT23-3" value="">
<attribute name="PROD_ID" value="TRANS-00830"/>
</element>
<element name="Q5" library="SparkFun-DiscreteSemi" package="SOT23-3" value="">
<attribute name="PROD_ID" value="TRANS-00830"/>
</element>
<element name="Q8" library="SparkFun-DiscreteSemi" package="SOT23-3" value="">
<attribute name="PROD_ID" value="TRANS-00830"/>
</element>
<element name="R1" library="SparkFun-Resistors" package="0603" value="1k">
<attribute name="PROD_ID" value="RES-07856"/>
</element>
<element name="R2" library="SparkFun-Resistors" package="0603" value="1k">
<attribute name="PROD_ID" value="RES-07856"/>
</element>
<element name="R5" library="SparkFun-Resistors" package="0603" value=" ">
<attribute name="PROD_ID" value=" "/>
</element>
<element name="R6" library="SparkFun-Resistors" package="0603" value=" ">
<attribute name="PROD_ID" value=" "/>
</element>
<element name="R7" library="SparkFun-Resistors" package="0603" value=" ">
<attribute name="PROD_ID" value=" "/>
</element>
<element name="R8" library="SparkFun-Resistors" package="0603" value=" ">
<attribute name="PROD_ID" value=" "/>
</element>
<element name="SP1" library="adafruit" package="PS12" value="SPEAKER/PS12"/>
<element name="SP2" library="adafruit" package="PS12" value="SPEAKER/PS12"/>
<element name="C6" library="SparkFun-Capacitors" package="0603" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="C5" library="SparkFun-Capacitors" package="0603" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="C7" library="SparkFun-Capacitors" package="0603" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
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<contactref element="SP1" pad="P$1"/>
<contactref element="Q2" pad="3"/>
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<signal name="N$2">
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<contactref element="Q3" pad="3"/>
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<contactref element="SP2" pad="P$1"/>
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<contactref element="C7" pad="2"/>
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<signal name="5V">
<contactref element="Q2" pad="2"/>
<contactref element="Q3" pad="2"/>
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<contactref element="J1" pad="2"/>
<contactref element="Q2" pad="1"/>
<contactref element="Q4" pad="1"/>
<contactref element="R1" pad="1"/>
<contactref element="Q8" pad="1"/>
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<signal name="RX">
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<contactref element="C4" pad="2"/>
<contactref element="IC1" pad="7"/>
<contactref element="R8" pad="2"/>
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<signal name="N$3">
<contactref element="R6" pad="1"/>
<contactref element="SP2" pad="P$2"/>
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<signal name="N$4">
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<signal name="N$5">
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<contactref element="IC1" pad="2"/>
<contactref element="R5" pad="1"/>
<contactref element="C2" pad="1"/>
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<signal name="N$8">
<contactref element="C2" pad="2"/>
<contactref element="IC1" pad="1"/>
<contactref element="R5" pad="2"/>
<contactref element="R7" pad="1"/>
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<signal name="N$9">
<contactref element="R7" pad="2"/>
<contactref element="C3" pad="1"/>
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<signal name="N$10">
<contactref element="C3" pad="2"/>
<contactref element="IC1" pad="6"/>
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