<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.5.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="63.424" y2="0" width="0" layer="20"/>
<wire x1="63.424" y1="0" x2="63.424" y2="50.282" width="0" layer="20"/>
<wire x1="63.424" y1="50.282" x2="0" y2="50.282" width="0" layer="20"/>
<wire x1="0" y1="50.282" x2="0" y2="0" width="0" layer="20"/>
<text>Open Hardware</text>
<text>60Hz-50Hz</text>
<text>Original design
by
Scullcom Hobby
Electronics</text>
<text>Barbouri 2016
Millivolt Meter</text>
<text>-DC 9V+</text>
<text>V 1.5</text>
<text>AGnd
DG</text>
<text>I2C DISPLAY</text>
<text>9V</text>
<text>5V</text>
<text>ADC notch
frequency</text>
<text>shield</text>
<text>shield</text>
<text>shield</text>
<text>shield</text>
<text>shield</text>
<text>shield</text>
<text>shield</text>
<text>G</text>
<text>A4 A5 +5  G</text>
<text>f - link</text>
<text>1K-9K-90K-900K-9M</text>
<text>|  100K   | 900K|</text>
<text>*</text>
<text>N/C</text>
<text>50V MAX</text>
<text>Caddock
Precision Decade resistor
voltage divider 0.05%</text>
<text>Right angle
FTDI header</text>
<text>No board connection</text>
<text>A5 A4
I2C</text>
<text>5V 16MHz</text>
</plain>
<libraries>
<library name="holes">
<description>&lt;b&gt;Mounting Holes and Pads&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="3,2">
<description>&lt;b&gt;MOUNTING HOLE&lt;/b&gt; 3.2 mm with drill center</description>
</package>
<package name="3,6">
<description>&lt;b&gt;MOUNTING HOLE&lt;/b&gt; 3.6 mm with drill center</description>
</package>
</packages>
</library>
<library name="SparkFun-Boards">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find boards and modules: Arduino footprints, breadboards, non-RF modules, 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="ARDUINO_PRO_MINI">
</package>
</packages>
</library>
<library name="LTC_By_element14_Batch_1">
<description>Developed by element14 :&lt;br&gt;
element14 CAD Library consolidation.ulp
at 30/07/2012 10:08:22</description>
<packages>
<package name="SOIC127P600X175-8N">
</package>
</packages>
</library>
<library name="Analog Devices_By_element14_Batch_1">
<description>Developed by element14 :&lt;br&gt;
element14 CAD Library consolidation.ulp
at 31/07/2012 09:37:13</description>
<packages>
<package name="SOIC127P600X175-8N">
</package>
</packages>
</library>
<library name="SparkFun-Passives">
<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="CPOL-RADIAL-1000UF-25V">
</package>
<package name="CPOL-RADIAL-10UF-25V">
</package>
<package name="0805">
</package>
<package name="CAP-PTH-SMALL">
</package>
<package name="2PT_GND_TIE">
</package>
<package name="0402-CAP">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="PAD-JUMPER-3-NO_YES_SILK_FULL_BOX">
<description>&lt;b&gt;Solder jumper&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="linear">
<description>&lt;b&gt;Linear Devices&lt;/b&gt;&lt;p&gt;
Operational amplifiers,  comparators, voltage regulators, ADCs, DACs, etc.&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="TO220H">
<description>&lt;b&gt;TO-220&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="heatsink">
<description>&lt;b&gt;Heatsinks&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="D02A-L">
<description>&lt;b&gt;HEATSINK&lt;/b&gt;&lt;p&gt;
vertical, distributor Schukat</description>
</package>
</packages>
</library>
<library name="wirepad">
<description>&lt;b&gt;Single Pads&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="2,15/1,0">
<description>&lt;b&gt;THROUGH-HOLE PAD&lt;/b&gt;</description>
</package>
<package name="1,6/0,8">
<description>&lt;b&gt;THROUGH-HOLE PAD&lt;/b&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; 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_LOCK">
</package>
</packages>
</library>
<library name="SparkFun-Aesthetics">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find non-functional items- supply symbols, logos, notations, frame blocks, 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="OSHW-LOGO-L">
</package>
<package name="OSHW-LOGO-L_COPPER">
</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="adafruit">
<packages>
<package name="1X10-BIG">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="H1" library="holes" package="3,2" value="MOUNT-HOLE3.2"/>
<element name="H2" library="holes" package="3,2" value="MOUNT-HOLE3.2"/>
<element name="H3" library="holes" package="3,2" value="MOUNT-HOLE3.2"/>
<element name="H4" library="holes" package="3,2" value="MOUNT-HOLE3.2"/>
<element name="U$1" library="SparkFun-Boards" package="ARDUINO_PRO_MINI" value="ARDUINO_PRO_MINI">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U1" library="LTC_By_element14_Batch_1" package="SOIC127P600X175-8N" value="LTC2400IS8">
<attribute name="SUPPLIER" value="Linear Technology"/>
<attribute name="MPN" value="LTC2400IS8#PBF"/>
<attribute name="OC_NEWARK" value="56M5404"/>
<attribute name="OC_FARNELL" value="1500953"/>
<attribute name="PACKAGE" value="SOIC-8"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U2" library="Analog Devices_By_element14_Batch_1" package="SOIC127P600X175-8N" value="AD8628">
<attribute name="SUPPLIER" value="Analog Devices"/>
<attribute name="MPN" value="AD8628WARZ-RL"/>
<attribute name="OC_NEWARK" value="70R1846"/>
<attribute name="OC_FARNELL" value="-"/>
<attribute name="PACKAGE" value="SOIC-8"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U3" library="Analog Devices_By_element14_Batch_1" package="SOIC127P600X175-8N" value="ADR4540B">
<attribute name="SUPPLIER" value="ANALOG DEVICES"/>
<attribute name="MPN" value="ADR434TRZ-EP"/>
<attribute name="OC_NEWARK" value="83R9334"/>
<attribute name="OC_FARNELL" value="-"/>
<attribute name="PACKAGE" value="SOIC-8"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C1" library="SparkFun-Passives" package="CPOL-RADIAL-1000UF-25V" value="220uF">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="C2" library="SparkFun-Passives" package="CPOL-RADIAL-10UF-25V" value="10uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="SparkFun-Passives" package="CAP-PTH-SMALL" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C4" library="SparkFun-Passives" package="CAP-PTH-SMALL" value="3.3uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C5" library="SparkFun-Passives" package="CAP-PTH-SMALL" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C6" library="SparkFun-Passives" package="CAP-PTH-SMALL" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C7" library="SparkFun-Passives" package="0805" value="0.1uf">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C8" library="SparkFun-Passives" package="CPOL-RADIAL-10UF-25V" value="3.3uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C9" library="SparkFun-Passives" package="CPOL-RADIAL-10UF-25V" value="10uF tant.">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="IC1" library="linear" package="TO220H" value="7805T">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="KK1" library="heatsink" package="D02A-L" value="D0A-L"/>
<element name="INPUT" library="wirepad" package="2,15/1,0" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="PAD3" library="wirepad" package="2,15/1,0" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="PAD4" library="wirepad" package="2,15/1,0" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="4.096V" library="wirepad" package="1,6/0,8" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="J2" library="SparkFun-Connectors" package="1X04_LOCK" value="">
<attribute name="PROD_ID" value="CONN-09696"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="PT1" library="SparkFun-Passives" package="2PT_GND_TIE" value="2PT_GND_TIE"/>
<element name="C10" library="SparkFun-Passives" package="0402-CAP" value="220pF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="JP1" library="SparkFun-Passives" package="PAD-JUMPER-3-NO_YES_SILK_FULL_BOX" value="JUMPER-PAD-3-NOFULL_BOX_SILK">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C11" library="SparkFun-Passives" package="CAP-PTH-SMALL" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="LOGO1" library="SparkFun-Aesthetics" package="OSHW-LOGO-L" value="OSHW-LOGOL"/>
<element name="U$2" library="SparkFun-Aesthetics" package="OSHW-LOGO-L_COPPER" value=""/>
<element name="R3" library="SparkFun-Resistors" package="0603-RES" value="10K">
<attribute name="PROD_ID" value="RES-00824"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="SparkFun-Resistors" package="0603-RES" value="10K">
<attribute name="PROD_ID" value="RES-00824"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="RN1" library="adafruit" package="1X10-BIG" value="1776-C6815">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="A-GND" library="wirepad" package="2,15/1,0" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U$3" library="holes" package="3,6" value=""/>
<element name="C12" library="SparkFun-Passives" package="0805" value="0.1uf">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
</elements>
<signals>
<signal name="VCC">
<contactref element="U1" pad="1"/>
<contactref element="U2" pad="7"/>
<contactref element="C7" pad="1"/>
<contactref element="C9" pad="1"/>
<contactref element="C6" pad="1"/>
<contactref element="U3" pad="2"/>
<contactref element="C8" pad="1"/>
<contactref element="C5" pad="1"/>
<contactref element="U$1" pad="21"/>
<contactref element="C4" pad="1"/>
<contactref element="JP1" pad="3"/>
<contactref element="C3" pad="1"/>
<contactref element="C2" pad="1"/>
<contactref element="IC1" pad="3"/>
<contactref element="C11" pad="1"/>
<contactref element="J2" pad="2"/>
<contactref element="R4" pad="2"/>
<contactref element="R3" pad="2"/>
</signal>
<signal name="N$2">
<contactref element="U2" pad="3"/>
<contactref element="C10" pad="2"/>
<contactref element="RN1" pad="7"/>
</signal>
<signal name="GND">
<contactref element="U1" pad="4"/>
<contactref element="PT1" pad="P$1"/>
<contactref element="PT1" pad="P$2"/>
<contactref element="C9" pad="2"/>
<contactref element="C6" pad="2"/>
<contactref element="U3" pad="4"/>
<contactref element="C8" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="U$1" pad="23"/>
<contactref element="C4" pad="2"/>
<contactref element="U$1" pad="4"/>
<contactref element="JP1" pad="1"/>
<contactref element="IC1" pad="2"/>
<contactref element="PAD4" pad="1"/>
<contactref element="C1" pad="2"/>
<contactref element="C3" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="C11" pad="2"/>
<contactref element="J2" pad="1"/>
<contactref element="U2" pad="4"/>
<contactref element="C7" pad="2"/>
<contactref element="A-GND" pad="1"/>
<contactref element="RN1" pad="10"/>
<contactref element="C12" pad="1"/>
</signal>
<signal name="V+">
</signal>
<signal name="N$5">
<contactref element="U2" pad="6"/>
<contactref element="U2" pad="2"/>
<contactref element="C10" pad="1"/>
<contactref element="U1" pad="3"/>
</signal>
<signal name="N$6">
<contactref element="U3" pad="6"/>
<contactref element="U1" pad="2"/>
<contactref element="4.096V" pad="1"/>
<contactref element="C12" pad="2"/>
</signal>
<signal name="N$8">
<contactref element="U1" pad="8"/>
<contactref element="JP1" pad="2"/>
</signal>
<signal name="D12">
<contactref element="U1" pad="6"/>
<contactref element="U$1" pad="15"/>
</signal>
<signal name="D10">
<contactref element="U1" pad="5"/>
<contactref element="U$1" pad="13"/>
<contactref element="R3" pad="1"/>
</signal>
<signal name="D13">
<contactref element="U1" pad="7"/>
<contactref element="U$1" pad="16"/>
<contactref element="R4" pad="1"/>
</signal>
<signal name="N$9">
<contactref element="PAD3" pad="1"/>
<contactref element="IC1" pad="1"/>
<contactref element="C1" pad="1"/>
</signal>
<signal name="N$7">
<contactref element="J2" pad="3"/>
<contactref element="U$1" pad="A5"/>
</signal>
<signal name="N$10">
<contactref element="J2" pad="4"/>
<contactref element="U$1" pad="A4"/>
</signal>
<signal name="N$11">
</signal>
<signal name="N$1">
<contactref element="INPUT" pad="1"/>
<contactref element="RN1" pad="6"/>
</signal>
<signal name="N$3">
</signal>
<signal name="N$4">
</signal>
</signals>
</board>
</drawing>
</eagle>
