<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.3">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="53.34" y2="0" width="0" layer="20"/>
<wire x1="53.34" y1="0" x2="53.34" y2="53.34" width="0" layer="20"/>
<wire x1="53.34" y1="53.34" x2="0" y2="53.34" width="0" layer="20"/>
<wire x1="0" y1="53.34" x2="0" y2="0" width="0" layer="20"/>
<hole x="3.175" y="3.175" drill="3.2"/>
<hole x="3.175" y="50.165" drill="3.2"/>
<hole x="50.165" y="50.165" drill="3.2"/>
<hole x="49.53" y="3.175" drill="3.2"/>
<text>xbee</text>
<text>heater</text>
<text>via to gnd plane below</text>
</plain>
<libraries>
<library name="SparkFun">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
We've spent an enormous amount of time creating and checking these footprints and parts. 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; CC v3.0 Share-Alike 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="XBEE-SMD">
</package>
<package name="0603-CAP">
</package>
<package name="0603-RES">
</package>
<package name="CRYSTAL-SMD-5X3">
</package>
<package name="C0402">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="2X3-NS">
</package>
<package name="0603-ARV">
<description>&lt;b&gt;Chip Resistor Array&lt;/b&gt; size 4 × 0603&lt;p&gt;
convex termination - Phycomp Components&lt;br&gt;
Source: RS Components</description>
</package>
<package name="0805">
</package>
<package name="SMA-DIODE">
<description>&lt;B&gt;Diode&lt;/B&gt;&lt;p&gt;
Basic SMA packaged diode. Good for reverse polarization protection. Common part #: MBRA140</description>
</package>
<package name="SRU1038">
</package>
<package name="SOD-323">
</package>
<package name="R2512">
</package>
<package name="SOT23-3">
</package>
</packages>
</library>
<library name="atmel">
<description>&lt;b&gt;AVR Devices&lt;/b&gt;&lt;p&gt;
Configurable logic, microcontrollers, nonvolatile memories&lt;p&gt;
Based on the following sources:&lt;p&gt;
&lt;ul&gt;
&lt;li&gt;www.atmel.com
&lt;li&gt;CD-ROM : Configurable Logic Microcontroller Nonvolatile Memory
&lt;li&gt;CadSoft download site, www.cadsoft.de or www.cadsoftusa.com , file at90smcu_v400.zip
&lt;li&gt;avr.lbr
&lt;/ul&gt;
&lt;author&gt;Revised by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="TQFP44">
<description>&lt;b&gt;44-lead Thin Quad Flat Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="trackuino">
<packages>
<package name="HX1">
</package>
</packages>
</library>
<library name="con-coax">
<packages>
<package name="BU-SMA-H">
<description>FEMALE &lt;b&gt;SMA CONNECTOR&lt;/b&gt;&lt;p&gt;
Radiall&lt;p&gt;</description>
</package>
</packages>
</library>
<library name="74xx-little-us">
<packages>
<package name="SOT23-5">
<description>&lt;b&gt;Small Outline Transistor&lt;/b&gt;&lt;p&gt;
SOT753 - Philips Semiconductors&lt;br&gt;
Source: http://www.semiconductors.philips.com/acrobat_download/datasheets/74HC_HCT1G66_3.pdf</description>
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="CHIPLED_0603">
<description>&lt;b&gt;CHIPLED&lt;/b&gt;&lt;p&gt;
Source: http://www.osram.convergy.de/ ... LG_LY Q971.pdf</description>
</package>
<package name="MICROSD">
</package>
</packages>
</library>
<library name="transistor-npn">
<description>&lt;b&gt;NPN Transistors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="SOT23-BEC">
<description>TO-236 ITT Intermetall</description>
</package>
</packages>
</library>
<library name="SLAT-CON-JST-ZH">
<packages>
<package name="ZH-H-2-1">
</package>
<package name="ZH-V-4-1">
</package>
<package name="ZH-V-3-1">
</package>
</packages>
</library>
<library name="transistor-small-signal">
<description>&lt;b&gt;Small Signal Transistors&lt;/b&gt;&lt;p&gt;
Packages from :&lt;br&gt;
www.infineon.com; &lt;br&gt;
www.semiconductors.com;&lt;br&gt;
www.irf.com&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="SOT23">
<description>&lt;b&gt;SOT-23&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SeniorDesign">
<packages>
<package name="SOT23-5">
</package>
<package name="SOIC8HEAT">
</package>
<package name="SOIC8">
</package>
<package name="MS412FE-FL26E">
</package>
</packages>
</library>
<library name="Seeed">
<packages>
<package name="NEO-5Q">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="U$2" library="SparkFun" package="XBEE-SMD" value="XBEE-1B3"/>
<element name="C1" library="SparkFun" package="0603-CAP" value="18pf"/>
<element name="C2" library="SparkFun" package="0603-CAP" value="18pf"/>
<element name="R1" library="SparkFun" package="0603-RES" value="10k"/>
<element name="IC1" library="atmel" package="TQFP44" value="ATMEGA644P">
<attribute name="OC_NEWARK" value="58M3748"/>
<attribute name="MPN" value="ATMEGA644PV-10AU"/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="1455123"/>
</element>
<element name="Y2" library="SparkFun" package="CRYSTAL-SMD-5X3" value="11.0592MHz"/>
<element name="C7" library="SparkFun" package="0603-CAP" value=".1uF"/>
<element name="C8" library="SparkFun" package="0603-CAP" value="8.2pF"/>
<element name="C9" library="SparkFun" package="0603-CAP" value="1uF"/>
<element name="C13" library="SparkFun" package="0603-CAP" value=".1uF"/>
<element name="C14" library="SparkFun" package="0603-CAP" value=".1uF"/>
<element name="C15" library="SparkFun" package="0603-CAP" value=".1uF"/>
<element name="C17" library="SparkFun" package="0603-CAP" value="10uF"/>
<element name="ICSP" library="SparkFun" package="2X3-NS" value="AVR_SPI_PRG_6NS"/>
<element name="M2" library="trackuino" package="HX1" value="HX1"/>
<element name="C3" library="SparkFun" package="0603-CAP" value=".1uF"/>
<element name="IC2" library="74xx-little-us" package="SOT23-5" value="ON M74VHC1GT125DT1G"/>
<element name="TX" library="adafruit" package="CHIPLED_0603" value="GREEN"/>
<element name="STAT" library="adafruit" package="CHIPLED_0603" value="BLUE"/>
<element name="ERROR" library="adafruit" package="CHIPLED_0603" value="RED"/>
<element name="POWER" library="adafruit" package="CHIPLED_0603" value="WHITE"/>
<element name="R10" library="SparkFun" package="0603-RES" value="4.7k"/>
<element name="R11" library="SparkFun" package="0603-RES" value="4.7k"/>
<element name="Q5" library="transistor-npn" package="SOT23-BEC" value="NPN"/>
<element name="R18" library="SparkFun" package="0603-RES" value="10k"/>
<element name="R19" library="SparkFun" package="0603-RES" value="10k"/>
<element name="R20" library="SparkFun" package="0603-RES" value="10k"/>
<element name="R21" library="SparkFun" package="0603-RES" value="10k"/>
<element name="BATT" library="SLAT-CON-JST-ZH" package="ZH-H-2-1" value="ZH-H-2-1"/>
<element name="BUZZ" library="SLAT-CON-JST-ZH" package="ZH-H-2-1" value="ZH-H-2-1"/>
<element name="R22" library="SparkFun" package="0603-RES" value="10k"/>
<element name="Q6" library="transistor-small-signal" package="SOT23" value="BSH202"/>
<element name="JTAG" library="SLAT-CON-JST-ZH" package="ZH-V-4-1" value="ZH-V-4-1"/>
<element name="TEMP" library="SeniorDesign" package="SOT23-5" value="MCP9800"/>
<element name="5V_SWITCHING" library="SeniorDesign" package="SOIC8HEAT" value="IFX91041EJ V50"/>
<element name="C12" library="SparkFun" package="0805" value="100uF"/>
<element name="C10" library="SparkFun" package="0603-CAP" value="22nF"/>
<element name="R2" library="SparkFun" package="0603-RES" value="22k"/>
<element name="C16" library="SparkFun" package="0603-CAP" value="220nF"/>
<element name="D1" library="SparkFun" package="SMA-DIODE" value="DIODE-SCHOTTKY"/>
<element name="L3" library="SparkFun" package="SRU1038" value="47uH"/>
<element name="C18" library="SparkFun" package="0805" value="100uF"/>
<element name="C19" library="SparkFun" package="0603-CAP" value="220nF"/>
<element name="3.3V_LDO_REG" library="SeniorDesign" package="SOIC8" value="TPS76833QD"/>
<element name="C21" library="SparkFun" package="0603-CAP" value="0.1uF"/>
<element name="C20" library="SparkFun" package="0603-CAP" value="10uF"/>
<element name="U3" library="Seeed" package="NEO-5Q" value="NEO-5Q"/>
<element name="R23" library="SparkFun" package="0603-RES" value="10R"/>
<element name="L5" library="SparkFun" package="C0402" value="27nH"/>
<element name="U7" library="SeniorDesign" package="SOT23-5" value="24AA32AFT"/>
<element name="U$7" library="SeniorDesign" package="MS412FE-FL26E" value="MS412FE-FL26E"/>
<element name="D2" library="SparkFun" package="SOD-323" value="SCHOTTKEY"/>
<element name="R3" library="SparkFun" package="0603-RES" value="220R"/>
<element name="X5" library="con-coax" package="BU-SMA-H" value="BU-SMA-H">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="X2" library="con-coax" package="BU-SMA-H" value="BU-SMA-H">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="AUX0" library="adafruit" package="CHIPLED_0603" value="ORANGE"/>
<element name="R13" library="SparkFun" package="0603-RES" value="10k"/>
<element name="AUX1" library="adafruit" package="CHIPLED_0603" value="VIOLET"/>
<element name="R14" library="SparkFun" package="0603-RES" value="10k"/>
<element name="AUX2" library="adafruit" package="CHIPLED_0603" value="AQUA"/>
<element name="R16" library="SparkFun" package="0603-RES" value="10k"/>
<element name="AUX3" library="adafruit" package="CHIPLED_0603" value="YELLOW"/>
<element name="R25" library="SparkFun" package="0603-RES" value="10k"/>
<element name="SETGPS" library="SLAT-CON-JST-ZH" package="ZH-V-3-1" value="ZH-V-3-1"/>
<element name="IC3" library="74xx-little-us" package="SOT23-5" value="ON M74VHC1GT125DT1G"/>
<element name="R27" library="SparkFun" package="R2512" value="18R"/>
<element name="Q7" library="SparkFun" package="SOT23-3" value="MOSFET-PCHANNELSMD"/>
<element name="Q9" library="transistor-npn" package="SOT23-BEC" value="NPN"/>
<element name="R29" library="SparkFun" package="0603-RES" value="1M"/>
<element name="10K" library="SparkFun" package="0603-RES" value="100k"/>
<element name="AUX4" library="adafruit" package="CHIPLED_0603" value="GREEN"/>
<element name="R4" library="SparkFun" package="0603-RES" value="10k"/>
<element name="L1" library="SparkFun" package="C0402" value="BLM18HB331SN1D"/>
<element name="C4" library="SparkFun" package="0603-CAP" value=".1uF"/>
<element name="ASDF" library="adafruit" package="MICROSD" value="MICROSD"/>
<element name="C6" library="SparkFun" package="0603-CAP" value=".1uF"/>
<element name="R5" library="SparkFun" package="0603-RES" value="100k"/>
<element name="C22" library="SparkFun" package="0603-CAP" value="10uF"/>
<element name="R6" library="SparkFun" package="0603-RES" value="100k"/>
<element name="R7" library="SparkFun" package="0603-ARV" value="4.7k"/>
</elements>
<signals>
<signal name="GND">
<contactref element="C2" pad="1"/>
<contactref element="C1" pad="1"/>
<contactref element="IC1" pad="39"/>
<contactref element="IC1" pad="28"/>
<contactref element="IC1" pad="18"/>
<contactref element="IC1" pad="6"/>
<contactref element="M2" pad="RFGND2"/>
<contactref element="M2" pad="RFGND1"/>
<contactref element="M2" pad="BODYGND1"/>
<contactref element="M2" pad="BODYGND2"/>
<contactref element="ICSP" pad="6"/>
<contactref element="U$2" pad="10"/>
<contactref element="C8" pad="2"/>
<contactref element="C9" pad="2"/>
<contactref element="U$2" pad="10"/>
<contactref element="C3" pad="1"/>
<contactref element="IC2" pad="3"/>
<contactref element="IC2" pad="1"/>
<contactref element="IC2" pad="3"/>
<contactref element="TX" pad="C"/>
<contactref element="STAT" pad="C"/>
<contactref element="ERROR" pad="C"/>
<contactref element="POWER" pad="C"/>
<contactref element="Q5" pad="E"/>
<contactref element="C17" pad="2"/>
<contactref element="C15" pad="2"/>
<contactref element="C14" pad="2"/>
<contactref element="M2" pad="0V"/>
<contactref element="C13" pad="1"/>
<contactref element="BATT" pad="2"/>
<contactref element="5V_SWITCHING" pad="9"/>
<contactref element="5V_SWITCHING" pad="2"/>
<contactref element="Q6" pad="1"/>
<contactref element="C12" pad="2"/>
<contactref element="5V_SWITCHING" pad="1"/>
<contactref element="R2" pad="1"/>
<contactref element="D1" pad="A"/>
<contactref element="C19" pad="2"/>
<contactref element="C18" pad="2"/>
<contactref element="3.3V_LDO_REG" pad="1"/>
<contactref element="3.3V_LDO_REG" pad="2"/>
<contactref element="C21" pad="2"/>
<contactref element="C20" pad="2"/>
<contactref element="U3" pad="12"/>
<contactref element="U3" pad="13"/>
<contactref element="U3" pad="24"/>
<contactref element="U3" pad="7"/>
<contactref element="C7" pad="2"/>
<contactref element="U3" pad="10"/>
<contactref element="U7" pad="2"/>
<contactref element="U7" pad="5"/>
<contactref element="U$7" pad="V-"/>
<contactref element="X5" pad="2"/>
<contactref element="X5" pad="4"/>
<contactref element="X5" pad="3"/>
<contactref element="X5" pad="5"/>
<contactref element="X5" pad="2"/>
<contactref element="X2" pad="2"/>
<contactref element="X2" pad="4"/>
<contactref element="X2" pad="3"/>
<contactref element="X2" pad="5"/>
<contactref element="X2" pad="2"/>
<contactref element="AUX0" pad="C"/>
<contactref element="AUX1" pad="C"/>
<contactref element="AUX2" pad="C"/>
<contactref element="AUX3" pad="C"/>
<contactref element="SETGPS" pad="2"/>
<contactref element="IC3" pad="3"/>
<contactref element="IC3" pad="1"/>
<contactref element="IC3" pad="3"/>
<contactref element="R27" pad="2"/>
<contactref element="Q9" pad="E"/>
<contactref element="AUX4" pad="C"/>
<contactref element="C4" pad="2"/>
<contactref element="TEMP" pad="2"/>
<contactref element="C6" pad="2"/>
<contactref element="C22" pad="2"/>
<contactref element="ASDF" pad="MT2"/>
<contactref element="ASDF" pad="MT1"/>
<contactref element="ASDF" pad="6"/>
<contactref element="ASDF" pad="CD2"/>
</signal>
<signal name="N$1">
<contactref element="IC1" pad="7"/>
<contactref element="Y2" pad="3"/>
<contactref element="C2" pad="2"/>
</signal>
<signal name="N$2">
<contactref element="IC1" pad="8"/>
<contactref element="Y2" pad="1"/>
<contactref element="C1" pad="2"/>
</signal>
<signal name="SDA">
<contactref element="IC1" pad="20"/>
<contactref element="R11" pad="2"/>
<contactref element="TEMP" pad="5"/>
</signal>
<signal name="SCL">
<contactref element="IC1" pad="19"/>
<contactref element="R10" pad="1"/>
<contactref element="TEMP" pad="4"/>
</signal>
<signal name="SCK">
<contactref element="IC1" pad="3"/>
<contactref element="ICSP" pad="3"/>
<contactref element="R7" pad="2"/>
</signal>
<signal name="MISO">
<contactref element="IC1" pad="2"/>
<contactref element="ICSP" pad="1"/>
<contactref element="R7" pad="3"/>
</signal>
<signal name="MOSI">
<contactref element="IC1" pad="1"/>
<contactref element="ICSP" pad="4"/>
<contactref element="R7" pad="1"/>
</signal>
<signal name="RESET">
<contactref element="IC1" pad="4"/>
<contactref element="R1" pad="2"/>
<contactref element="ICSP" pad="5"/>
</signal>
<signal name="TCK">
<contactref element="IC1" pad="21"/>
<contactref element="JTAG" pad="1"/>
</signal>
<signal name="TMS">
<contactref element="IC1" pad="22"/>
<contactref element="JTAG" pad="2"/>
</signal>
<signal name="TDO">
<contactref element="IC1" pad="23"/>
<contactref element="JTAG" pad="3"/>
</signal>
<signal name="TDI">
<contactref element="IC1" pad="24"/>
<contactref element="JTAG" pad="4"/>
</signal>
<signal name="RXD0">
<contactref element="IC1" pad="9"/>
<contactref element="U$2" pad="2"/>
</signal>
<signal name="TXD0">
<contactref element="IC1" pad="10"/>
<contactref element="U$2" pad="3"/>
</signal>
<signal name="RXD1">
<contactref element="IC1" pad="11"/>
<contactref element="U3" pad="20"/>
<contactref element="SETGPS" pad="3"/>
</signal>
<signal name="TXD1">
<contactref element="IC1" pad="12"/>
<contactref element="U3" pad="21"/>
<contactref element="SETGPS" pad="1"/>
</signal>
<signal name="RFOUT">
<contactref element="M2" pad="RFOUT"/>
<contactref element="X2" pad="1"/>
</signal>
<signal name="HX1_EN">
<contactref element="IC2" pad="2"/>
<contactref element="R18" pad="1"/>
<contactref element="IC1" pad="15"/>
</signal>
<signal name="3.3V">
<contactref element="C8" pad="1"/>
<contactref element="C9" pad="1"/>
<contactref element="U$2" pad="1"/>
<contactref element="IC1" pad="17"/>
<contactref element="IC1" pad="5"/>
<contactref element="IC1" pad="38"/>
<contactref element="R1" pad="1"/>
<contactref element="C17" pad="1"/>
<contactref element="C15" pad="1"/>
<contactref element="C14" pad="1"/>
<contactref element="R11" pad="1"/>
<contactref element="R10" pad="2"/>
<contactref element="3.3V_LDO_REG" pad="6"/>
<contactref element="3.3V_LDO_REG" pad="5"/>
<contactref element="C20" pad="1"/>
<contactref element="ICSP" pad="2"/>
<contactref element="U7" pad="4"/>
<contactref element="D2" pad="2"/>
<contactref element="IC1" pad="27"/>
<contactref element="L1" pad="2"/>
<contactref element="C4" pad="1"/>
<contactref element="TEMP" pad="1"/>
<contactref element="C22" pad="1"/>
<contactref element="C6" pad="1"/>
<contactref element="ASDF" pad="4"/>
<contactref element="R6" pad="2"/>
<contactref element="R5" pad="2"/>
</signal>
<signal name="HX1_EN_5V">
<contactref element="M2" pad="EN"/>
<contactref element="IC2" pad="4"/>
</signal>
<signal name="N$3">
<contactref element="IC1" pad="29"/>
<contactref element="C3" pad="2"/>
</signal>
<signal name="5V">
<contactref element="M2" pad="VCC"/>
<contactref element="C13" pad="2"/>
<contactref element="5V_SWITCHING" pad="4"/>
<contactref element="C18" pad="1"/>
<contactref element="C19" pad="1"/>
<contactref element="3.3V_LDO_REG" pad="4"/>
<contactref element="3.3V_LDO_REG" pad="3"/>
<contactref element="C21" pad="1"/>
<contactref element="IC2" pad="5"/>
<contactref element="IC3" pad="5"/>
<contactref element="L3" pad="2"/>
</signal>
<signal name="HX1_TX_5V">
<contactref element="M2" pad="TXD"/>
<contactref element="IC3" pad="4"/>
</signal>
<signal name="STATLED">
<contactref element="IC1" pad="43"/>
<contactref element="R19" pad="1"/>
</signal>
<signal name="ERRLED">
<contactref element="IC1" pad="42"/>
<contactref element="R20" pad="1"/>
</signal>
<signal name="POWLED">
<contactref element="IC1" pad="44"/>
<contactref element="R21" pad="1"/>
</signal>
<signal name="N$13">
<contactref element="Q5" pad="C"/>
<contactref element="BUZZ" pad="2"/>
</signal>
<signal name="BUZZ">
<contactref element="IC1" pad="30"/>
<contactref element="R22" pad="1"/>
</signal>
<signal name="SD_CS">
<contactref element="IC1" pad="41"/>
<contactref element="ASDF" pad="2"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="N$24">
<contactref element="R18" pad="2"/>
<contactref element="TX" pad="A"/>
</signal>
<signal name="N$26">
<contactref element="R19" pad="2"/>
<contactref element="STAT" pad="A"/>
</signal>
<signal name="N$27">
<contactref element="R20" pad="2"/>
<contactref element="ERROR" pad="A"/>
</signal>
<signal name="N$28">
<contactref element="R21" pad="2"/>
<contactref element="POWER" pad="A"/>
</signal>
<signal name="N$20">
<contactref element="Q5" pad="B"/>
<contactref element="R22" pad="2"/>
</signal>
<signal name="VBATRAW">
<contactref element="Q6" pad="3"/>
<contactref element="BATT" pad="1"/>
</signal>
<signal name="VBAT">
<contactref element="Q6" pad="2"/>
<contactref element="5V_SWITCHING" pad="8"/>
<contactref element="C12" pad="1"/>
<contactref element="5V_SWITCHING" pad="7"/>
<contactref element="BUZZ" pad="1"/>
<contactref element="R29" pad="2"/>
<contactref element="Q7" pad="3"/>
</signal>
<signal name="N$4">
<contactref element="5V_SWITCHING" pad="3"/>
<contactref element="C10" pad="1"/>
</signal>
<signal name="N$18">
<contactref element="C10" pad="2"/>
<contactref element="R2" pad="2"/>
</signal>
<signal name="N$19">
<contactref element="5V_SWITCHING" pad="5"/>
<contactref element="C16" pad="1"/>
</signal>
<signal name="N$21">
<contactref element="5V_SWITCHING" pad="6"/>
<contactref element="C16" pad="2"/>
<contactref element="D1" pad="C"/>
<contactref element="L3" pad="1"/>
</signal>
<signal name="N$29">
<contactref element="U3" pad="9"/>
<contactref element="U3" pad="8"/>
<contactref element="R23" pad="1"/>
</signal>
<signal name="N$30">
<contactref element="L5" pad="2"/>
<contactref element="R23" pad="2"/>
</signal>
<signal name="N$31">
<contactref element="U3" pad="11"/>
<contactref element="L5" pad="1"/>
<contactref element="X5" pad="1"/>
</signal>
<signal name="UBX_SCL">
<contactref element="U3" pad="19"/>
<contactref element="U7" pad="1"/>
</signal>
<signal name="UBX_SDA">
<contactref element="U3" pad="18"/>
<contactref element="U7" pad="3"/>
</signal>
<signal name="VBACKUP">
<contactref element="U3" pad="22"/>
<contactref element="R3" pad="1"/>
<contactref element="D2" pad="1"/>
</signal>
<signal name="N$32">
<contactref element="U$7" pad="V+"/>
<contactref element="R3" pad="2"/>
</signal>
<signal name="N$10">
<contactref element="R13" pad="2"/>
<contactref element="AUX0" pad="A"/>
</signal>
<signal name="AUXLED1">
<contactref element="R14" pad="1"/>
</signal>
<signal name="AUXLED0">
<contactref element="R13" pad="1"/>
</signal>
<signal name="AUXLED2">
<contactref element="R16" pad="1"/>
</signal>
<signal name="AUXLED3">
<contactref element="R25" pad="1"/>
</signal>
<signal name="N$12">
<contactref element="R14" pad="2"/>
<contactref element="AUX1" pad="A"/>
</signal>
<signal name="N$33">
<contactref element="R16" pad="2"/>
<contactref element="AUX2" pad="A"/>
</signal>
<signal name="N$34">
<contactref element="R25" pad="2"/>
<contactref element="AUX3" pad="A"/>
</signal>
<signal name="HX1_TX">
<contactref element="IC3" pad="2"/>
<contactref element="IC1" pad="16"/>
</signal>
<signal name="HEAT">
<contactref element="IC1" pad="31"/>
<contactref element="10K" pad="2"/>
</signal>
<signal name="N$36">
<contactref element="Q9" pad="C"/>
<contactref element="R29" pad="1"/>
<contactref element="Q7" pad="1"/>
</signal>
<signal name="N$37">
<contactref element="Q7" pad="2"/>
<contactref element="R27" pad="1"/>
</signal>
<signal name="N$38">
<contactref element="Q9" pad="B"/>
<contactref element="10K" pad="1"/>
</signal>
<signal name="ASSOCLED">
<contactref element="U$2" pad="15"/>
<contactref element="R4" pad="1"/>
</signal>
<signal name="N$5">
<contactref element="R4" pad="2"/>
<contactref element="AUX4" pad="A"/>
</signal>
<signal name="N$6">
<contactref element="U3" pad="23"/>
<contactref element="C7" pad="1"/>
<contactref element="L1" pad="1"/>
</signal>
<signal name="N$8">
<contactref element="R7" pad="8"/>
<contactref element="ASDF" pad="3"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="N$9">
<contactref element="R7" pad="6"/>
<contactref element="ASDF" pad="7"/>
</signal>
<signal name="N$7">
<contactref element="R7" pad="7"/>
<contactref element="ASDF" pad="5"/>
</signal>
<signal name="SD_DETECT">
<contactref element="ASDF" pad="CD1"/>
<contactref element="IC1" pad="40"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
