<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="8.3.2">
<drawing>
<board>
<plain>
<wire x1="5.08" y1="0" x2="47.9848" y2="0" width="0" layer="20"/>
<wire x1="47.9848" y1="0" x2="51.74" y2="3.7552" width="0" layer="20" curve="90"/>
<wire x1="51.74" y1="3.7552" x2="51.74" y2="50.860921875" width="0" layer="20"/>
<wire x1="51.74" y1="50.860921875" x2="48.000921875" y2="54.6" width="0" layer="20" curve="90"/>
<wire x1="48.000921875" y1="54.6" x2="4.318959375" y2="54.6" width="0" layer="20"/>
<wire x1="4.318959375" y1="54.6" x2="0" y2="50.281040625" width="0" layer="20" curve="90"/>
<wire x1="0" y1="50.281040625" x2="0" y2="5.08" width="0" layer="20"/>
<wire x1="0" y1="5.08" x2="5.08" y2="0" width="0" layer="20" curve="90"/>
<text>GND</text>
<text>PWM</text>
<text>VCC</text>
<text>GND2</text>
<text>GND2</text>
<text>GND</text>
<text>Buff_in</text>
<text>VCC</text>
<text>PWM to Isolated Potentiometer</text>
<text>Signals IN</text>
<text>PWM</text>
<text>SIG</text>
<text>SIG</text>
<text>4N25 OptoIso</text>
<text>CD4049 Hex Buffer</text>
<text>OMSI 03/2018</text>
<text>Thomas Hudson</text>
</plain>
<libraries>
<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="1X01">
</package>
<package name="SCREWTERMINAL-5MM-2">
<description>&lt;h3&gt;Screw Terminal  5mm Pitch -2 Pin PTH&lt;/h3&gt;
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count: 2&lt;/li&gt;
&lt;li&gt;Pin pitch: 5mm/197mil&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=”https://www.sparkfun.com/datasheets/Prototyping/Screw-Terminal-5mm.pdf”&gt;Datasheet referenced for footprint&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;CONN_02&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
<package name="SCREWTERMINAL-5MM-3">
</package>
</packages>
</library>
<library name="eagle_libraries">
<packages>
<package name="STANDOFF-ELECTRICAL">
<description>#8 screw hole, 170mill, 0.30 mask</description>
</package>
</packages>
</library>
<library name="optocoupler">
<description>&lt;b&gt;Opto Couplers&lt;/b&gt;&lt;p&gt;
Siemens, Hewlett-Packard, Texas Instuments, Sharp, Motorola&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DIL06">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</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="DIL14">
</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="AXIAL-0.3-KIT">
<description>&lt;h3&gt;AXIAL-0.3-KIT&lt;/h3&gt;

Commonly used for 1/4W through-hole resistors. 0.3" pitch between holes.&lt;br&gt;
&lt;br&gt;

&lt;b&gt;Warning:&lt;/b&gt; This is the KIT version of the AXIAL-0.3 package. This package has a smaller diameter top stop mask, which doesn't cover the diameter of the pad. This means only the bottom side of the pads' copper will be exposed. You'll only be able to solder to the bottom side.</description>
</package>
<package name="CAP-PTH-SMALL">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="J2" library="SparkFun-Connectors" package="SCREWTERMINAL-5MM-2" value="">
<attribute name="SF_SKU" value="PRT-08432"/>
<attribute name="VALUE"/>
</element>
<element name="J12" library="SparkFun-Connectors" package="1X01" value="">
<attribute name="VALUE"/>
</element>
<element name="J15" library="SparkFun-Connectors" package="1X01" value="">
<attribute name="VALUE"/>
</element>
<element name="S1" library="eagle_libraries" package="STANDOFF-ELECTRICAL" value="STANDOFF_ELECTRICAL"/>
<element name="S2" library="eagle_libraries" package="STANDOFF-ELECTRICAL" value="STANDOFF_ELECTRICAL"/>
<element name="S3" library="eagle_libraries" package="STANDOFF-ELECTRICAL" value="STANDOFF_ELECTRICAL"/>
<element name="S4" library="eagle_libraries" package="STANDOFF-ELECTRICAL" value="STANDOFF_ELECTRICAL"/>
<element name="4N25" library="optocoupler" package="DIL06" value="PC110">
<attribute name="MF" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="OC_FARNELL" value="unknown"/>
<attribute name="OC_NEWARK" value="unknown"/>
</element>
<element name="CD4049" library="SparkFun-DigitalIC" package="DIL14" value="74HC04_HEX_INVERTER">
<attribute name="NAME"/>
</element>
<element name="R1" library="SparkFun-Passives" package="AXIAL-0.3-KIT" value="10k">
<attribute name="VALUE"/>
</element>
<element name="J1" library="SparkFun-Connectors" package="SCREWTERMINAL-5MM-3" value="">
<attribute name="STOREFRONT_ID" value="PRT-08433"/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="SparkFun-Passives" package="AXIAL-0.3-KIT" value="2K">
<attribute name="VALUE"/>
</element>
<element name="R3" library="SparkFun-Passives" package="AXIAL-0.3-KIT" value="2K">
<attribute name="VALUE"/>
</element>
<element name="C1" library="SparkFun-Passives" package="CAP-PTH-SMALL" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="SparkFun-Passives" package="AXIAL-0.3-KIT" value="470">
<attribute name="VALUE"/>
</element>
<element name="J3" library="SparkFun-Connectors" package="1X01" value="">
<attribute name="VALUE"/>
</element>
<element name="J4" library="SparkFun-Connectors" package="1X01" value="">
<attribute name="VALUE"/>
</element>
<element name="J5" library="SparkFun-Connectors" package="1X01" value="">
<attribute name="VALUE"/>
</element>
<element name="J6" library="SparkFun-Connectors" package="1X01" value="">
<attribute name="VALUE"/>
</element>
</elements>
<signals>
<signal name="GND">
<contactref element="CD4049" pad="7"/>
<contactref element="4N25" pad="4"/>
<contactref element="R1" pad="P$2"/>
<contactref element="J1" pad="1"/>
<contactref element="C1" pad="2"/>
<contactref element="J6" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="4N25" pad="5"/>
<contactref element="R2" pad="P$1"/>
<contactref element="CD4049" pad="1"/>
<contactref element="CD4049" pad="3"/>
<contactref element="CD4049" pad="5"/>
<contactref element="CD4049" pad="9"/>
<contactref element="CD4049" pad="11"/>
<contactref element="CD4049" pad="13"/>
<contactref element="J3" pad="1"/>
</signal>
<signal name="N$3">
<contactref element="4N25" pad="6"/>
<contactref element="R1" pad="P$1"/>
</signal>
<signal name="N$7">
<contactref element="J1" pad="3"/>
<contactref element="R2" pad="P$2"/>
<contactref element="CD4049" pad="14"/>
<contactref element="J4" pad="1"/>
</signal>
<signal name="N$9">
<contactref element="CD4049" pad="2"/>
<contactref element="R3" pad="P$2"/>
<contactref element="CD4049" pad="4"/>
<contactref element="CD4049" pad="6"/>
<contactref element="CD4049" pad="8"/>
<contactref element="CD4049" pad="10"/>
<contactref element="CD4049" pad="12"/>
</signal>
<signal name="N$10">
<contactref element="J1" pad="2"/>
<contactref element="R3" pad="P$1"/>
<contactref element="C1" pad="1"/>
<contactref element="J5" pad="1"/>
</signal>
<signal name="N$8">
<contactref element="4N25" pad="1"/>
<contactref element="R4" pad="P$1"/>
<contactref element="J15" pad="1"/>
</signal>
<signal name="N$1">
<contactref element="J2" pad="2"/>
<contactref element="R4" pad="P$2"/>
</signal>
<signal name="N$2">
<contactref element="J2" pad="1"/>
<contactref element="4N25" pad="2"/>
<contactref element="J12" pad="1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
