<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.2.0">
<drawing>
<board>
<plain>
<wire x1="1.016" y1="33.96" x2="1.016" y2="1.27" width="0" layer="20"/>
<wire x1="1.016" y1="1.27" x2="2.159" y2="0" width="0" layer="20" curve="90"/>
<wire x1="2.159" y1="0" x2="53.447" y2="0" width="0" layer="20"/>
<wire x1="53.447" y1="0" x2="54.463" y2="1.27" width="0" layer="20" curve="90"/>
<wire x1="54.463" y1="1.27" x2="54.463" y2="33.96" width="0" layer="20"/>
<wire x1="54.463" y1="33.96" x2="52.939" y2="35.23" width="0" layer="20" curve="90"/>
<wire x1="52.939" y1="35.23" x2="1.905" y2="35.23" width="0" layer="20"/>
<wire x1="1.905" y1="35.23" x2="1.016" y2="33.96" width="0" layer="20" curve="90"/>
<text>A</text>
<text>B</text>
<text>B</text>
<text>A</text>
<text>G</text>
<text>+</text>
<text>-</text>
<text>5</text>
<text>Adam Mokan (2015)</text>
</plain>
<libraries>
<library name="SparkFun">
<packages>
<package name="AVR_ICSP">
<description>&lt;b&gt;PIN HEADER&lt;/b&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; 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="PANASONIC_D">
</package>
<package name="0603-CAP">
</package>
</packages>
</library>
<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; 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-RES">
</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="1X02">
</package>
</packages>
</library>
<library name="erthenvar">
<packages>
<package name="ERTHENVAR-JACK">
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="SO14">
<description>&lt;b&gt;Small Outline package&lt;/b&gt; 150 mil</description>
</package>
</packages>
</library>
<library name="DCL">
<packages>
<package name="DCL">
<description>DCL LOGO</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="GND_POS" library="SparkFun" package="AVR_ICSP" value="M05X2PTH"/>
<element name="5V_NEG" library="SparkFun" package="AVR_ICSP" value="M05X2PTH"/>
<element name="C1" library="SparkFun-Capacitors" package="PANASONIC_D" value="10u">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="SparkFun-Resistors" package="0603-RES" value="24.9k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="SparkFun-Resistors" package="0603-RES" value="100k"/>
<element name="R3" library="SparkFun-Resistors" package="0603-RES" value="1k"/>
<element name="C2" library="SparkFun-Capacitors" package="0603-CAP" value="100pF">
<attribute name="PROD_ID" value="CAP-07883"/>
</element>
<element name="R4" library="SparkFun-Resistors" package="0603-RES" value="39k"/>
<element name="C3" library="SparkFun-Capacitors" package="0603-CAP" value="100pF">
<attribute name="PROD_ID" value="CAP-07883"/>
</element>
<element name="R5" library="SparkFun-Resistors" package="0603-RES" value="39k"/>
<element name="C4" library="SparkFun-Capacitors" package="0603-CAP" value="47pF">
<attribute name="PROD_ID" value="CAP-08913"/>
</element>
<element name="JP1" library="SparkFun-Connectors" package="1X02" value="M02PTH"/>
<element name="OUT1" library="erthenvar" package="ERTHENVAR-JACK" value="AUDIO-JACKERTHENVAR">
<attribute name="NAME"/>
</element>
<element name="C5" library="SparkFun-Capacitors" package="0603-CAP" value="100n"/>
<element name="C6" library="SparkFun-Capacitors" package="0603-CAP" value="100n"/>
<element name="C7" library="SparkFun-Capacitors" package="0603-CAP" value="100n"/>
<element name="C8" library="SparkFun-Capacitors" package="0603-CAP" value="100n"/>
<element name="C9" library="SparkFun-Capacitors" package="PANASONIC_D" value="10u">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R6" library="SparkFun-Resistors" package="0603-RES" value="24.9k"/>
<element name="R7" library="SparkFun-Resistors" package="0603-RES" value="100k"/>
<element name="R8" library="SparkFun-Resistors" package="0603-RES" value="1k"/>
<element name="C10" library="SparkFun-Capacitors" package="0603-CAP" value="100pF">
<attribute name="PROD_ID" value="CAP-07883"/>
</element>
<element name="R9" library="SparkFun-Resistors" package="0603-RES" value="39k"/>
<element name="C11" library="SparkFun-Capacitors" package="0603-CAP" value="100pF">
<attribute name="PROD_ID" value="CAP-07883"/>
</element>
<element name="R10" library="SparkFun-Resistors" package="0603-RES" value="39k"/>
<element name="C12" library="SparkFun-Capacitors" package="0603-CAP" value="47pF">
<attribute name="PROD_ID" value="CAP-08913"/>
</element>
<element name="OUT2" library="erthenvar" package="ERTHENVAR-JACK" value="AUDIO-JACKERTHENVAR">
<attribute name="NAME"/>
</element>
<element name="TL074" library="adafruit" package="SO14" value="QUAD_OPAMPD">
<attribute name="NAME"/>
</element>
<element name="U$1" library="DCL" package="DCL" value=""/>
</elements>
<signals>
<signal name="GND">
<contactref element="GND_POS" pad="7"/>
<contactref element="GND_POS" pad="5"/>
<contactref element="GND_POS" pad="3"/>
<contactref element="GND_POS" pad="1"/>
<contactref element="GND_POS" pad="9"/>
<contactref element="C3" pad="1"/>
<contactref element="C5" pad="1"/>
<contactref element="C8" pad="1"/>
<contactref element="C7" pad="2"/>
<contactref element="C6" pad="2"/>
<contactref element="C11" pad="1"/>
<contactref element="OUT1" pad="1@1"/>
<contactref element="OUT1" pad="1@2"/>
<contactref element="OUT2" pad="1@1"/>
<contactref element="OUT2" pad="1@2"/>
<contactref element="TL074" pad="6"/>
<contactref element="TL074" pad="13"/>
</signal>
<signal name="VCC">
<contactref element="GND_POS" pad="8"/>
<contactref element="GND_POS" pad="6"/>
<contactref element="GND_POS" pad="4"/>
<contactref element="GND_POS" pad="2"/>
<contactref element="GND_POS" pad="10"/>
<contactref element="C6" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="TL074" pad="4"/>
</signal>
<signal name="VEE">
<contactref element="5V_NEG" pad="7"/>
<contactref element="5V_NEG" pad="5"/>
<contactref element="5V_NEG" pad="3"/>
<contactref element="5V_NEG" pad="1"/>
<contactref element="5V_NEG" pad="9"/>
<contactref element="C5" pad="2"/>
<contactref element="C8" pad="2"/>
<contactref element="TL074" pad="11"/>
</signal>
<signal name="5V">
<contactref element="5V_NEG" pad="8"/>
<contactref element="5V_NEG" pad="6"/>
<contactref element="5V_NEG" pad="4"/>
<contactref element="5V_NEG" pad="2"/>
<contactref element="5V_NEG" pad="10"/>
</signal>
<signal name="N$1">
<contactref element="R1" pad="2"/>
<contactref element="C4" pad="1"/>
<contactref element="R2" pad="1"/>
<contactref element="TL074" pad="5"/>
</signal>
<signal name="N$2">
<contactref element="R1" pad="1"/>
<contactref element="C1" pad="-"/>
</signal>
<signal name="N$3">
<contactref element="C1" pad="+"/>
<contactref element="C2" pad="2"/>
<contactref element="TL074" pad="2"/>
<contactref element="TL074" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="R4" pad="2"/>
<contactref element="C3" pad="2"/>
<contactref element="TL074" pad="3"/>
</signal>
<signal name="N$6">
<contactref element="R5" pad="2"/>
<contactref element="R4" pad="1"/>
<contactref element="C2" pad="1"/>
</signal>
<signal name="N$7">
<contactref element="R3" pad="1"/>
<contactref element="C4" pad="2"/>
<contactref element="TL074" pad="7"/>
</signal>
<signal name="N$8">
<contactref element="R3" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="OUT1" pad="3"/>
</signal>
<signal name="N$9">
<contactref element="R5" pad="1"/>
<contactref element="JP1" pad="2"/>
</signal>
<signal name="N$5">
<contactref element="R6" pad="2"/>
<contactref element="C12" pad="1"/>
<contactref element="R7" pad="1"/>
<contactref element="TL074" pad="12"/>
</signal>
<signal name="N$10">
<contactref element="R6" pad="1"/>
<contactref element="C9" pad="-"/>
</signal>
<signal name="N$11">
<contactref element="C9" pad="+"/>
<contactref element="C10" pad="2"/>
<contactref element="TL074" pad="9"/>
<contactref element="TL074" pad="8"/>
</signal>
<signal name="N$12">
<contactref element="R9" pad="2"/>
<contactref element="C11" pad="2"/>
<contactref element="TL074" pad="10"/>
</signal>
<signal name="N$13">
<contactref element="R10" pad="2"/>
<contactref element="R9" pad="1"/>
<contactref element="C10" pad="1"/>
</signal>
<signal name="N$14">
<contactref element="R8" pad="1"/>
<contactref element="C12" pad="2"/>
<contactref element="TL074" pad="14"/>
</signal>
<signal name="N$15">
<contactref element="R8" pad="2"/>
<contactref element="R7" pad="2"/>
<contactref element="OUT2" pad="3"/>
</signal>
<signal name="N$16">
<contactref element="R10" pad="1"/>
<contactref element="JP1" pad="1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
