<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.1.2">
<drawing>
<board>
<plain>
<circle x="16.51" y="13.97" radius="14.02760625" width="0.1524" layer="20"/>
</plain>
<libraries>
<library name="MF_Passives">
<packages>
<package name="C0603">
<description>&lt;b&gt;Description:&lt;/b&gt; Standard 0603 Package for Capacitors&lt;br/&gt;</description>
</package>
<package name="R0603">
<description>&lt;b&gt;Description:&lt;/b&gt; Standard 0603 Package for Resistors&lt;br/&gt;</description>
</package>
</packages>
</library>
<library name="MF_LEDs">
<packages>
<package name="LED0603">
<description>&lt;b&gt;Description:&lt;/b&gt; Footprint for Single LEDs in 0603&lt;br/&gt;</description>
</package>
</packages>
</library>
<library name="AD8232ACPZ-WP">
<description>&lt;Heart Rate Monitor Front End LFCSP20EP AD8232ACPZ-WP, Analogue Front End IC, 1-channel, 20-Pin LFCSP&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by SamacSys&lt;/author&gt;</description>
<packages>
<package name="QFN50P400X400X80-21N">
<description>&lt;b&gt;CP-20-10 (LFCSP)&lt;/b&gt;&lt;br&gt;
</description>
</package>
</packages>
</library>
<library name="MF_Connectors">
<packages>
<package name="PTH_2.54MM_01X03">
<description>&lt;b&gt;Description:&lt;/b&gt; Package for 2.54MM Pitch Header 3 Position. Based on 4UCON 00834.&lt;br&gt;</description>
</package>
</packages>
</library>
<library name="BAT-HLD-001">
<packages>
<package name="BAT-HLD-001">
</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="B1,27">
<description>&lt;b&gt;TEST PAD&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="0.22UF" library="MF_Passives" package="C0603" value="">
<attribute name="DIELECTRIC" value=""/>
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C1" library="MF_Passives" package="C0603" value="0.1uF">
<attribute name="DIELECTRIC" value=""/>
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C2" library="MF_Passives" package="C0603" value="22nF">
<attribute name="DIELECTRIC" value=""/>
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C3" library="MF_Passives" package="C0603" value="0.1uF">
<attribute name="DIELECTRIC" value=""/>
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C4" library="MF_Passives" package="C0603" value="3.3nF">
<attribute name="DIELECTRIC" value=""/>
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C6" library="MF_Passives" package="C0603" value="1nF">
<attribute name="DIELECTRIC" value=""/>
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C7" library="MF_Passives" package="C0603" value="0.22uF">
<attribute name="DIELECTRIC" value=""/>
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="D1" library="MF_LEDs" package="LED0603" value="MF-LED-0603-RED">
<attribute name="HOUSEPART" value="YES"/>
<attribute name="MPN" value="MF-LED-0603-RED"/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="URL" value="https://factory.macrofab.com/part/MF-LED-0603-RED"/>
</element>
<element name="IC1" library="AD8232ACPZ-WP" package="QFN50P400X400X80-21N" value="AD8232ACPZ-WP">
<attribute name="ARROW_PART_NUMBER" value="AD8232ACPZ-WP"/>
<attribute name="ARROW_PRICE/STOCK" value="https://www.arrow.com/en/products/ad8232acpz-wp/analog-devices"/>
<attribute name="DESCRIPTION" value="Heart Rate Monitor Front End LFCSP20EP AD8232ACPZ-WP, Analogue Front End IC, 1-channel, 20-Pin LFCSP"/>
<attribute name="HEIGHT" value="0.8mm"/>
<attribute name="MANUFACTURER_NAME" value="Analog Devices"/>
<attribute name="MANUFACTURER_PART_NUMBER" value="AD8232ACPZ-WP"/>
<attribute name="RS_PART_NUMBER" value="7863145P"/>
<attribute name="RS_PRICE/STOCK" value="http://uk.rs-online.com/web/p/products/7863145P"/>
</element>
<element name="J1" library="MF_Connectors" package="PTH_2.54MM_01X03" value="MF-CON-2.54mm-01x03">
<attribute name="HOUSEPART" value="YES"/>
<attribute name="LABEL01" value=""/>
<attribute name="LABEL02" value=""/>
<attribute name="LABEL03" value=""/>
<attribute name="MPN" value="MF-CON-2.54mm-01x03"/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="URL" value="https://factory.macrofab.com/part/MF-CON-2.54mm-01x03"/>
</element>
<element name="R1" library="MF_Passives" package="R0603" value="0">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R10" library="MF_Passives" package="R0603" value="1M">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R12" library="MF_Passives" package="R0603" value="1M">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R13" library="MF_Passives" package="R0603" value="180k">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R14" library="MF_Passives" package="R0603" value="180k">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R15" library="MF_Passives" package="R0603" value="100k">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R2" library="MF_Passives" package="R0603" value="10M">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R3" library="MF_Passives" package="R0603" value="1M">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R4" library="MF_Passives" package="R0603" value="100k">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R5" library="MF_Passives" package="R0603" value="360k">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R6" library="MF_Passives" package="R0603" value="10M">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R7" library="MF_Passives" package="R0603" value="10M">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R8" library="MF_Passives" package="R0603" value="10M">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="R9" library="MF_Passives" package="R0603" value="10M">
<attribute name="HOUSEPART" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="POPULATE" value="1"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="URL" value=""/>
<attribute name="VOLTAGE" value=""/>
<attribute name="WATTAGE" value=""/>
</element>
<element name="U$1" library="BAT-HLD-001" package="BAT-HLD-001" value="BAT-HLD-001">
<attribute name="AVAILABILITY" value="Unavailable"/>
<attribute name="DESCRIPTION" value=" CR2032 Battery Holder Surface Mount Tape and Reel "/>
<attribute name="MF" value="Linx"/>
<attribute name="MP" value="BAT-HLD-001-TR"/>
<attribute name="PACKAGE" value="None"/>
<attribute name="PRICE" value="None"/>
</element>
<element name="VBAT" library="testpad" package="B1,27" value="PTR1B1,27">
<attribute name="NAME"/>
<attribute name="TP_SIGNAL_NAME" value=""/>
<attribute name="VALUE"/>
</element>
<element name="A" library="testpad" package="B1,27" value="PTR1B1,27">
<attribute name="NAME"/>
<attribute name="TP_SIGNAL_NAME" value=""/>
<attribute name="VALUE"/>
</element>
<element name="GND" library="testpad" package="B1,27" value="PTR1B1,27">
<attribute name="NAME"/>
<attribute name="TP_SIGNAL_NAME" value=""/>
<attribute name="VALUE"/>
</element>
</elements>
<signals>
<signal name="3V">
<contactref element="U$1" pad="+@1"/>
<contactref element="U$1" pad="+@2"/>
<contactref element="IC1" pad="17"/>
<contactref element="C1" pad="P$1"/>
<contactref element="R2" pad="P$2"/>
<contactref element="IC1" pad="15"/>
<contactref element="R6" pad="P$1"/>
<contactref element="R7" pad="P$1"/>
<contactref element="VBAT" pad="TP"/>
</signal>
<signal name="GND">
<contactref element="U$1" pad="-"/>
<contactref element="D1" pad="CATHODE"/>
<contactref element="IC1" pad="16"/>
<contactref element="C1" pad="P$2"/>
<contactref element="C3" pad="P$2"/>
<contactref element="R9" pad="P$2"/>
<contactref element="IC1" pad="14"/>
<contactref element="IC1" pad="21"/>
<contactref element="GND" pad="TP"/>
</signal>
<signal name="LA">
<contactref element="J1" pad="P$1"/>
<contactref element="R13" pad="P$1"/>
<contactref element="R6" pad="P$2"/>
</signal>
<signal name="RA">
<contactref element="J1" pad="P$2"/>
<contactref element="R14" pad="P$1"/>
<contactref element="R7" pad="P$2"/>
</signal>
<signal name="N$1">
<contactref element="D1" pad="ANODE"/>
<contactref element="R1" pad="P$2"/>
<contactref element="A" pad="TP"/>
</signal>
<signal name="OUT">
<contactref element="R1" pad="P$1"/>
<contactref element="IC1" pad="10"/>
<contactref element="R12" pad="P$2"/>
<contactref element="C4" pad="P$2"/>
</signal>
<signal name="N$2">
<contactref element="R2" pad="P$1"/>
<contactref element="IC1" pad="18"/>
<contactref element="C3" pad="P$1"/>
<contactref element="R9" pad="P$1"/>
</signal>
<signal name="N$3">
<contactref element="IC1" pad="6"/>
<contactref element="R3" pad="P$1"/>
<contactref element="R15" pad="P$1"/>
<contactref element="0.22UF" pad="P$2"/>
</signal>
<signal name="N$5">
<contactref element="IC1" pad="7"/>
<contactref element="C2" pad="P$1"/>
<contactref element="R10" pad="P$1"/>
</signal>
<signal name="N$6">
<contactref element="IC1" pad="9"/>
<contactref element="R4" pad="P$2"/>
<contactref element="R12" pad="P$1"/>
</signal>
<signal name="N$7">
<contactref element="IC1" pad="8"/>
<contactref element="C2" pad="P$2"/>
<contactref element="R15" pad="P$2"/>
<contactref element="R4" pad="P$1"/>
</signal>
<signal name="N$8">
<contactref element="R3" pad="P$2"/>
<contactref element="R10" pad="P$2"/>
<contactref element="C4" pad="P$1"/>
</signal>
<signal name="IAOUT">
<contactref element="0.22UF" pad="P$1"/>
<contactref element="IC1" pad="19"/>
<contactref element="R8" pad="P$2"/>
</signal>
<signal name="N$4">
<contactref element="C6" pad="P$2"/>
<contactref element="IC1" pad="4"/>
</signal>
<signal name="N$9">
<contactref element="IC1" pad="5"/>
<contactref element="C6" pad="P$1"/>
<contactref element="R5" pad="P$2"/>
</signal>
<signal name="RL">
<contactref element="R5" pad="P$1"/>
<contactref element="J1" pad="P$3"/>
</signal>
<signal name="N$10">
<contactref element="R14" pad="P$2"/>
<contactref element="IC1" pad="3"/>
</signal>
<signal name="N$11">
<contactref element="R13" pad="P$2"/>
<contactref element="IC1" pad="2"/>
</signal>
<signal name="N$12">
<contactref element="C7" pad="P$2"/>
<contactref element="IC1" pad="1"/>
</signal>
<signal name="N$13">
<contactref element="C7" pad="P$1"/>
<contactref element="IC1" pad="20"/>
<contactref element="R8" pad="P$1"/>
</signal>
</signals>
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