<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.5.0">
<drawing>
<board>
<plain>
<wire x1="60.96" y1="46.99" x2="3.81" y2="46.99" width="0" layer="20"/>
<wire x1="3.81" y1="46.99" x2="2.54" y2="45.72" width="0" layer="20" curve="90"/>
<wire x1="2.54" y1="45.72" x2="2.54" y2="1.27" width="0" layer="20"/>
<wire x1="2.54" y1="1.27" x2="3.81" y2="0" width="0" layer="20" curve="90"/>
<wire x1="3.81" y1="0" x2="60.96" y2="0" width="0" layer="20"/>
<wire x1="60.96" y1="0" x2="62.23" y2="1.27" width="0" layer="20" curve="90"/>
<wire x1="62.23" y1="1.27" x2="62.23" y2="45.72" width="0" layer="20"/>
<wire x1="62.23" y1="45.72" x2="60.96" y2="46.99" width="0" layer="20" curve="90"/>
<hole x="5.08" y="44.45" drill="3.2"/>
<hole x="5.08" y="2.54" drill="3.2"/>
<hole x="59.69" y="2.54" drill="3.2"/>
<hole x="59.69" y="44.45" drill="3.2"/>
<hole x="36.83" y="17.78" drill="3.2"/>
</plain>
<libraries>
<library name="analog-devices">
<description>&lt;b&gt;Analog Devices Components&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="SO8">
<description>&lt;b&gt;8-Lead Small Outline IC&lt;/b&gt; (SO-8)&lt;p&gt;
Source: http://www.analog.com/UploadedFiles/Data_Sheets/703465986AD8611_2_0.pdf</description>
</package>
</packages>
</library>
<library name="SparkFun-DigitalIC">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find all manner of digital ICs- microcontrollers, memory chips, logic chips, FPGAs, 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="DIL28-3">
<description>Standard 28-pin DIP package.&lt;br&gt;
IC needs to have legs bent before insertion.</description>
</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="AXIAL-0.3EZ">
<description>This is the "EZ" version of the standard .3" spaced resistor package.&lt;br&gt;
It has a reduced top mask to make it harder to install upside-down.</description>
</package>
<package name="0603-RES">
</package>
</packages>
</library>
<library name="SparkFun-FreqCtrl">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find crystals and oscillators and other things that go "tick".&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="HC49US">
<description>&lt;B&gt;CRYSTAL&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="0603-CAP">
</package>
</packages>
</library>
<library name="v-reg">
<description>&lt;b&gt;Voltage Regulators&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="78XXS">
<description>&lt;b&gt;VOLTAGE REGULATOR&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="pinhead">
<description>&lt;b&gt;Pin Header Connectors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="2X05">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X03">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="2X06">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="2X08">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="2X10">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X04">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="testpad">
<description>&lt;b&gt;Test Pins/Pads&lt;/b&gt;&lt;p&gt;
Cream on SMD OFF.&lt;br&gt;
new: Attribute TP_SIGNAL_NAME&lt;br&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="B2,54">
<description>&lt;b&gt;TEST PAD&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="AMP" library="analog-devices" package="SO8" value="AD620R">
<attribute name="OC_NEWARK" value="05F7109"/>
<attribute name="MPN" value="AD620AR"/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="1464424"/>
</element>
<element name="MCU" library="SparkFun-DigitalIC" package="DIL28-3" value="ATMEGA328P_PDIP"/>
<element name="REFL" library="SparkFun-Resistors" package="AXIAL-0.3EZ" value=""/>
<element name="REFH" library="SparkFun-Resistors" package="AXIAL-0.3EZ" value=""/>
<element name="GAIN" library="SparkFun-Resistors" package="AXIAL-0.3EZ" value=""/>
<element name="X1" library="SparkFun-FreqCtrl" package="HC49US" value="14.7"/>
<element name="C1" library="SparkFun-Capacitors" package="0603-CAP" value=""/>
<element name="C2" library="SparkFun-Capacitors" package="0603-CAP" value=""/>
<element name="C3" library="SparkFun-Capacitors" package="0603-CAP" value=""/>
<element name="VREG" library="v-reg" package="78XXS" value="L7805APB"/>
<element name="R4" library="SparkFun-Resistors" package="0603-RES" value=""/>
<element name="R5" library="SparkFun-Resistors" package="0603-RES" value=""/>
<element name="R6" library="SparkFun-Resistors" package="0603-RES" value=""/>
<element name="R7" library="SparkFun-Resistors" package="0603-RES" value=""/>
<element name="R8" library="SparkFun-Resistors" package="0603-RES" value=""/>
<element name="PRO" library="pinhead" package="1X03" value=""/>
<element name="_" library="pinhead" package="2X08" value=""/>
<element name="|" library="pinhead" package="2X08" value=""/>
<element name="," library="pinhead" package="2X10" value=""/>
<element name="OTHER" library="pinhead" package="2X05" value=""/>
<element name="LEDHOOKUP" library="pinhead" package="2X05" value=""/>
<element name="ADC0-3" library="pinhead" package="1X04" value=""/>
<element name="C4" library="SparkFun-Capacitors" package="0603-CAP" value=""/>
<element name="CENT" library="SparkFun-Resistors" package="AXIAL-0.3EZ" value=""/>
<element name="HIGH" library="SparkFun-Resistors" package="AXIAL-0.3EZ" value=""/>
<element name="LOW" library="SparkFun-Resistors" package="AXIAL-0.3EZ" value=""/>
<element name=",1" library="pinhead" package="2X06" value=""/>
<element name="`" library="pinhead" package="2X08" value=""/>
<element name="-" library="pinhead" package="2X08" value=""/>
<element name="MODE" library="testpad" package="B2,54" value="TPB2,54">
<attribute name="TP_SIGNAL_NAME" value=""/>
</element>
<element name="C5" library="SparkFun-Capacitors" package="0603-CAP" value=""/>
<element name="GAIN1" library="SparkFun-Resistors" package="AXIAL-0.3EZ" value=""/>
</elements>
<signals>
<signal name="N$1">
<contactref element="MCU" pad="15"/>
<contactref element="R4" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="MCU" pad="16"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="N$3">
<contactref element="MCU" pad="17"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="MCU" pad="18"/>
<contactref element="R7" pad="1"/>
</signal>
<signal name="N$5">
<contactref element="MCU" pad="19"/>
<contactref element="R8" pad="1"/>
</signal>
<signal name="N$9">
<contactref element="R5" pad="2"/>
<contactref element="LEDHOOKUP" pad="7"/>
</signal>
<signal name="GND">
<contactref element="MCU" pad="22"/>
<contactref element="MCU" pad="8"/>
<contactref element="VREG" pad="GND"/>
<contactref element="C1" pad="2"/>
<contactref element="PRO" pad="3"/>
<contactref element="OTHER" pad="10"/>
<contactref element="OTHER" pad="8"/>
<contactref element="C2" pad="2"/>
<contactref element="REFL" pad="P$1"/>
<contactref element="AMP" pad="4"/>
<contactref element="C3" pad="2"/>
<contactref element="C4" pad="2"/>
<contactref element="LOW" pad="P$1"/>
<contactref element="OTHER" pad="6"/>
<contactref element="OTHER" pad="4"/>
<contactref element="LEDHOOKUP" pad="2"/>
<contactref element="LEDHOOKUP" pad="4"/>
<contactref element="LEDHOOKUP" pad="6"/>
<contactref element="LEDHOOKUP" pad="8"/>
<contactref element="LEDHOOKUP" pad="10"/>
<contactref element="," pad="19"/>
<contactref element="," pad="20"/>
<contactref element="-" pad="15"/>
<contactref element="-" pad="16"/>
<contactref element="`" pad="15"/>
<contactref element="`" pad="16"/>
<contactref element="," pad="16"/>
<contactref element="," pad="18"/>
<contactref element="|" pad="15"/>
<contactref element="|" pad="16"/>
<contactref element="C5" pad="2"/>
</signal>
<signal name="N$11">
<contactref element="MCU" pad="9"/>
<contactref element="X1" pad="2"/>
</signal>
<signal name="N$12">
<contactref element="MCU" pad="10"/>
<contactref element="X1" pad="1"/>
</signal>
<signal name="5V">
<contactref element="VREG" pad="OUT"/>
<contactref element="MCU" pad="21"/>
<contactref element="MCU" pad="20"/>
<contactref element="MCU" pad="7"/>
<contactref element="C1" pad="1"/>
<contactref element="MCU" pad="1"/>
<contactref element="REFH" pad="P$2"/>
<contactref element="AMP" pad="7"/>
<contactref element="HIGH" pad="P$2"/>
<contactref element="OTHER" pad="5"/>
<contactref element="_" pad="1"/>
<contactref element="_" pad="2"/>
<contactref element=",1" pad="1"/>
<contactref element=",1" pad="2"/>
<contactref element="_" pad="6"/>
<contactref element="_" pad="4"/>
</signal>
<signal name="N$14">
<contactref element="MCU" pad="2"/>
<contactref element="PRO" pad="1"/>
</signal>
<signal name="N$15">
<contactref element="MCU" pad="3"/>
<contactref element="PRO" pad="2"/>
</signal>
<signal name="LAUNCH_BUTTON">
<contactref element="MCU" pad="4"/>
<contactref element="OTHER" pad="9"/>
</signal>
<signal name="N$16">
<contactref element="R4" pad="2"/>
<contactref element="LEDHOOKUP" pad="9"/>
</signal>
<signal name="N$17">
<contactref element="R7" pad="2"/>
<contactref element="LEDHOOKUP" pad="3"/>
</signal>
<signal name="N$18">
<contactref element="R8" pad="2"/>
<contactref element="LEDHOOKUP" pad="1"/>
</signal>
<signal name="N$19">
<contactref element="R6" pad="2"/>
<contactref element="LEDHOOKUP" pad="5"/>
</signal>
<signal name="MEASUREMENT">
<contactref element="MCU" pad="24"/>
<contactref element="ADC0-3" pad="2"/>
<contactref element="AMP" pad="6"/>
<contactref element="C2" pad="1"/>
</signal>
<signal name="N$6">
<contactref element="MCU" pad="25"/>
<contactref element="ADC0-3" pad="3"/>
</signal>
<signal name="N$7">
<contactref element="ADC0-3" pad="4"/>
<contactref element="MCU" pad="26"/>
</signal>
<signal name="N$8">
<contactref element="MCU" pad="23"/>
<contactref element="ADC0-3" pad="1"/>
</signal>
<signal name="N$10">
<contactref element="AMP" pad="1"/>
<contactref element="GAIN" pad="P$2"/>
<contactref element="GAIN1" pad="P$2"/>
</signal>
<signal name="N$13">
<contactref element="AMP" pad="8"/>
<contactref element="GAIN" pad="P$1"/>
<contactref element="GAIN1" pad="P$1"/>
</signal>
<signal name="N$20">
<contactref element="AMP" pad="5"/>
<contactref element="REFH" pad="P$1"/>
<contactref element="REFL" pad="P$2"/>
<contactref element="REFL" pad="P$2"/>
<contactref element="C5" pad="1"/>
</signal>
<signal name="IG_LOW">
<contactref element="AMP" pad="2"/>
<contactref element="C3" pad="1"/>
<contactref element="CENT" pad="P$1"/>
<contactref element="LOW" pad="P$2"/>
<contactref element="OTHER" pad="2"/>
</signal>
<signal name="IG_HIGH">
<contactref element="C4" pad="1"/>
<contactref element="AMP" pad="3"/>
<contactref element="HIGH" pad="P$1"/>
<contactref element="CENT" pad="P$2"/>
<contactref element="OTHER" pad="1"/>
</signal>
<signal name="FIRE_RELAY">
<contactref element="OTHER" pad="7"/>
<contactref element="MCU" pad="28"/>
</signal>
<signal name="POWER_IN">
<contactref element="OTHER" pad="3"/>
<contactref element="VREG" pad="IN"/>
</signal>
<signal name="N$21">
<contactref element="MCU" pad="14"/>
<contactref element="MODE" pad="TP"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
