<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.5.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="5.08" x2="5.08" y2="0" width="0.4064" layer="20"/>
<wire x1="5.08" y1="0" x2="53.34" y2="0" width="0.4064" layer="20"/>
<wire x1="53.34" y1="0" x2="58.42" y2="5.08" width="0.4064" layer="20"/>
<wire x1="58.42" y1="5.08" x2="58.42" y2="53.34" width="0.4064" layer="20"/>
<wire x1="58.42" y1="53.34" x2="53.34" y2="58.42" width="0.4064" layer="20"/>
<wire x1="53.34" y1="58.42" x2="5.08" y2="58.42" width="0.4064" layer="20"/>
<wire x1="5.08" y1="58.42" x2="0" y2="53.34" width="0.4064" layer="20"/>
<wire x1="0" y1="53.34" x2="0" y2="5.08" width="0.4064" layer="20"/>
</plain>
<libraries>
<library name="01_FAB_Hello">
<packages>
<package name="SOIC14">
<description>&lt;b&gt;Small Outline Package&lt;/b&gt;</description>
</package>
<package name="1206">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
</packages>
</library>
<library name="01_ng">
<description>Neil Gershenfeld's library</description>
<packages>
<package name="SOT23">
<description>&lt;b&gt;SOT 23&lt;/b&gt;</description>
</package>
<package name="1206">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
</packages>
</library>
<library name="01_adafruit">
<packages>
<package name="NX5032">
</package>
</packages>
</library>
<library name="01_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="1X08">
</package>
<package name="ALPS_POT">
</package>
<package name="1X02_LONGPADS">
</package>
</packages>
</library>
<library name="inductor-coilcraft">
<description>&lt;b&gt;Coilcraft SMD Inductors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DO3316P">
<description>&lt;b&gt;COILCRAFT&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
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<element name="IC1" library="01_FAB_Hello" package="SOIC14" value="ATTINY44-SSU"/>
<element name="IC2" library="01_ng" package="SOT23" value=""/>
<element name="X1" library="01_adafruit" package="NX5032" value=""/>
<element name="C1" library="01_FAB_Hello" package="1206" value=""/>
<element name="C2" library="01_FAB_Hello" package="1206" value=""/>
<element name="JP2" library="01_SparkFun" package="1X08" value="OUT"/>
<element name="JP3" library="01_SparkFun" package="1X08" value="IN"/>
<element name="R1" library="01_FAB_Hello" package="1206" value="10K"/>
<element name="R2" library="01_FAB_Hello" package="1206" value="499R"/>
<element name="U$1" library="01_FAB_Hello" package="1206" value=""/>
<element name="C3" library="01_FAB_Hello" package="1206" value=""/>
<element name="U$2" library="01_SparkFun" package="ALPS_POT" value=""/>
<element name="U$3" library="01_SparkFun" package="ALPS_POT" value=""/>
<element name="U$4" library="01_SparkFun" package="ALPS_POT" value=""/>
<element name="JP1" library="01_SparkFun" package="1X02_LONGPADS" value=""/>
<element name="R3" library="01_ng" package="1206" value=""/>
<element name="R4" library="01_ng" package="1206" value=""/>
<element name="C4" library="01_ng" package="1206" value=""/>
<element name="L1" library="inductor-coilcraft" package="DO3316P" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
</elements>
<signals>
<signal name="GND">
<contactref element="IC2" pad="3"/>
<contactref element="JP3" pad="1"/>
<contactref element="JP2" pad="1"/>
<contactref element="C3" pad="1"/>
<contactref element="IC1" pad="14"/>
<contactref element="C1" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="U$2" pad="P$3"/>
<contactref element="U$3" pad="P$3"/>
<contactref element="U$4" pad="P$3"/>
<contactref element="JP1" pad="2"/>
<contactref element="C4" pad="1"/>
<contactref element="R3" pad="1"/>
</signal>
<signal name="VCC">
<contactref element="IC2" pad="1"/>
<contactref element="C3" pad="2"/>
<contactref element="IC1" pad="1"/>
<contactref element="R1" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="U$2" pad="P$1"/>
<contactref element="U$3" pad="P$1"/>
<contactref element="U$4" pad="P$1"/>
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<signal name="N$1">
<contactref element="X1" pad="P$2"/>
<contactref element="C1" pad="1"/>
<contactref element="IC1" pad="3"/>
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<signal name="N$2">
<contactref element="X1" pad="P$1"/>
<contactref element="C2" pad="1"/>
<contactref element="IC1" pad="2"/>
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<signal name="N$6">
<contactref element="IC2" pad="2"/>
<contactref element="JP3" pad="8"/>
<contactref element="JP2" pad="8"/>
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<signal name="RST">
<contactref element="JP3" pad="7"/>
<contactref element="IC1" pad="4"/>
<contactref element="R1" pad="1"/>
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<signal name="SCK">
<contactref element="JP3" pad="6"/>
<contactref element="JP2" pad="6"/>
<contactref element="IC1" pad="9"/>
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<signal name="MOSI">
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<contactref element="JP3" pad="5"/>
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<signal name="MISO">
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<contactref element="JP3" pad="2"/>
<contactref element="JP2" pad="5"/>
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<signal name="N$3">
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<contactref element="U$1" pad="1"/>
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<signal name="N$4">
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<contactref element="IC1" pad="10"/>
</signal>
<signal name="SYNC">
<contactref element="IC1" pad="5"/>
<contactref element="JP2" pad="3"/>
<contactref element="JP3" pad="3"/>
</signal>
<signal name="AUDIO_PWM">
<contactref element="IC1" pad="6"/>
<contactref element="L1" pad="1"/>
</signal>
<signal name="N$7">
<contactref element="U$2" pad="P$2"/>
<contactref element="IC1" pad="13"/>
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<signal name="N$8">
<contactref element="U$3" pad="P$2"/>
<contactref element="IC1" pad="12"/>
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<signal name="N$9">
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<contactref element="IC1" pad="11"/>
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<signal name="N$10">
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<contactref element="R4" pad="2"/>
<contactref element="R3" pad="2"/>
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<signal name="N$11">
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<contactref element="C4" pad="2"/>
<contactref element="L1" pad="2"/>
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</signals>
</board>
</drawing>
</eagle>
