<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.3">
<drawing>
<settings>
<setting alwaysvectorfont="no"/>
<setting verticaltext="up"/>
</settings>
<grid distance="0.1" unitdist="inch" unit="inch" style="lines" multiple="1" display="no" altdistance="0.01" altunitdist="inch" altunit="inch"/>
<layers>
<layer number="1" name="Top" color="4" fill="1" visible="no" active="no"/>
<layer number="16" name="Bottom" color="1" fill="1" visible="no" active="no"/>
<layer number="17" name="Pads" color="2" fill="1" visible="no" active="no"/>
<layer number="18" name="Vias" color="2" fill="1" visible="no" active="no"/>
<layer number="19" name="Unrouted" color="6" fill="1" visible="no" active="no"/>
<layer number="20" name="Dimension" color="7" fill="1" visible="no" active="no"/>
<layer number="21" name="tPlace" color="16" fill="1" visible="no" active="no"/>
<layer number="22" name="bPlace" color="14" fill="1" visible="no" active="no"/>
<layer number="23" name="tOrigins" color="15" fill="1" visible="no" active="no"/>
<layer number="24" name="bOrigins" color="15" fill="1" visible="no" active="no"/>
<layer number="25" name="tNames" color="7" fill="1" visible="no" active="no"/>
<layer number="26" name="bNames" color="7" fill="1" visible="no" active="no"/>
<layer number="27" name="tValues" color="7" fill="1" visible="no" active="no"/>
<layer number="28" name="bValues" color="7" fill="1" visible="no" active="no"/>
<layer number="29" name="tStop" color="7" fill="3" visible="no" active="no"/>
<layer number="30" name="bStop" color="7" fill="6" visible="no" active="no"/>
<layer number="31" name="tCream" color="11" fill="4" visible="no" active="no"/>
<layer number="32" name="bCream" color="7" fill="5" visible="no" active="no"/>
<layer number="33" name="tFinish" color="6" fill="3" visible="no" active="no"/>
<layer number="34" name="bFinish" color="6" fill="6" visible="no" active="no"/>
<layer number="35" name="tGlue" color="7" fill="4" visible="no" active="no"/>
<layer number="36" name="bGlue" color="7" fill="5" visible="no" active="no"/>
<layer number="37" name="tTest" color="7" fill="1" visible="no" active="no"/>
<layer number="38" name="bTest" color="7" fill="1" visible="no" active="no"/>
<layer number="39" name="tKeepout" color="4" fill="11" visible="no" active="no"/>
<layer number="40" name="bKeepout" color="1" fill="11" visible="no" active="no"/>
<layer number="41" name="tRestrict" color="4" fill="10" visible="no" active="no"/>
<layer number="42" name="bRestrict" color="1" fill="10" visible="no" active="no"/>
<layer number="43" name="vRestrict" color="2" fill="10" visible="no" active="no"/>
<layer number="44" name="Drills" color="7" fill="1" visible="no" active="no"/>
<layer number="45" name="Holes" color="7" fill="1" visible="no" active="no"/>
<layer number="46" name="Milling" color="3" fill="1" visible="no" active="no"/>
<layer number="47" name="Measures" color="7" fill="1" visible="no" active="no"/>
<layer number="48" name="Document" color="7" fill="1" visible="no" active="no"/>
<layer number="49" name="Reference" color="13" fill="1" visible="no" active="no"/>
<layer number="50" name="dxf" color="7" fill="1" visible="no" active="no"/>
<layer number="51" name="tDocu" color="14" fill="1" visible="no" active="no"/>
<layer number="52" name="bDocu" color="7" fill="1" visible="no" active="no"/>
<layer number="53" name="tGND_GNDA" color="7" fill="9" visible="no" active="no"/>
<layer number="54" name="bGND_GNDA" color="1" fill="9" visible="no" active="no"/>
<layer number="56" name="wert" color="7" fill="1" visible="no" active="no"/>
<layer number="91" name="Nets" color="2" fill="1" visible="yes" active="yes"/>
<layer number="92" name="Busses" color="1" fill="1" visible="yes" active="yes"/>
<layer number="93" name="Pins" color="2" fill="1" visible="no" active="yes"/>
<layer number="94" name="Symbols" color="4" fill="1" visible="yes" active="yes"/>
<layer number="95" name="Names" color="7" fill="1" visible="yes" active="yes"/>
<layer number="96" name="Values" color="7" fill="1" visible="yes" active="yes"/>
<layer number="97" name="Info" color="7" fill="1" visible="yes" active="yes"/>
<layer number="98" name="Guide" color="6" fill="1" visible="yes" active="yes"/>
<layer number="100" name="Muster" color="7" fill="1" visible="no" active="no"/>
<layer number="101" name="Patch_Top" color="12" fill="4" visible="no" active="yes"/>
<layer number="102" name="Vscore" color="7" fill="1" visible="no" active="yes"/>
<layer number="103" name="tMap" color="7" fill="1" visible="no" active="yes"/>
<layer number="104" name="Name" color="16" fill="1" visible="no" active="yes"/>
<layer number="105" name="tPlate" color="7" fill="1" visible="no" active="yes"/>
<layer number="106" name="bPlate" color="7" fill="1" visible="no" active="yes"/>
<layer number="107" name="Crop" color="7" fill="1" visible="no" active="yes"/>
<layer number="116" name="Patch_BOT" color="9" fill="4" visible="no" active="yes"/>
<layer number="121" name="_tsilk" color="7" fill="1" visible="no" active="yes"/>
<layer number="122" name="_bsilk" color="7" fill="1" visible="no" active="yes"/>
<layer number="125" name="_tNames" color="7" fill="1" visible="no" active="yes"/>
<layer number="144" name="Drill_legend" color="7" fill="1" visible="no" active="yes"/>
<layer number="151" name="HeatSink" color="7" fill="1" visible="no" active="yes"/>
<layer number="200" name="200bmp" color="1" fill="10" visible="no" active="yes"/>
<layer number="201" name="201bmp" color="2" fill="10" visible="no" active="yes"/>
<layer number="202" name="202bmp" color="3" fill="10" visible="no" active="yes"/>
<layer number="203" name="203bmp" color="4" fill="10" visible="no" active="yes"/>
<layer number="204" name="204bmp" color="5" fill="10" visible="no" active="yes"/>
<layer number="205" name="205bmp" color="6" fill="10" visible="no" active="yes"/>
<layer number="206" name="206bmp" color="7" fill="10" visible="no" active="yes"/>
<layer number="207" name="207bmp" color="8" fill="10" visible="no" active="yes"/>
<layer number="208" name="208bmp" color="9" fill="10" visible="no" active="yes"/>
<layer number="209" name="209bmp" color="7" fill="1" visible="no" active="yes"/>
<layer number="210" name="210bmp" color="7" fill="1" visible="no" active="yes"/>
<layer number="211" name="211bmp" color="7" fill="1" visible="no" active="yes"/>
<layer number="212" name="212bmp" color="7" fill="1" visible="no" active="yes"/>
<layer number="213" name="213bmp" color="7" fill="1" visible="no" active="yes"/>
<layer number="214" name="214bmp" color="7" fill="1" visible="no" active="yes"/>
<layer number="215" name="215bmp" color="7" fill="1" visible="no" active="yes"/>
<layer number="216" name="216bmp" color="7" fill="1" visible="no" active="yes"/>
<layer number="217" name="217bmp" color="18" fill="1" visible="no" active="no"/>
<layer number="218" name="218bmp" color="19" fill="1" visible="no" active="no"/>
<layer number="219" name="219bmp" color="20" fill="1" visible="no" active="no"/>
<layer number="220" name="220bmp" color="21" fill="1" visible="no" active="no"/>
<layer number="221" name="221bmp" color="22" fill="1" visible="no" active="no"/>
<layer number="222" name="222bmp" color="23" fill="1" visible="no" active="no"/>
<layer number="223" name="223bmp" color="24" fill="1" visible="no" active="no"/>
<layer number="224" name="224bmp" color="25" fill="1" visible="no" active="no"/>
<layer number="250" name="Descript" color="3" fill="1" visible="no" active="no"/>
<layer number="251" name="SMDround" color="12" fill="11" visible="no" active="no"/>
<layer number="254" name="cooling" color="7" fill="1" visible="no" active="yes"/>
</layers>
<schematic xreflabel="%F%N/%S.%C%R" xrefpart="/%S.%C%R">
<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>
</packages>
<symbols>
<symbol name="LETTER_L">
<wire x1="0" y1="185.42" x2="248.92" y2="185.42" width="0.4064" layer="94"/>
<wire x1="248.92" y1="185.42" x2="248.92" y2="0" width="0.4064" layer="94"/>
<wire x1="0" y1="185.42" x2="0" y2="0" width="0.4064" layer="94"/>
<wire x1="0" y1="0" x2="248.92" y2="0" width="0.4064" layer="94"/>
</symbol>
<symbol name="DOCFIELD">
<wire x1="0" y1="0" x2="71.12" y2="0" width="0.254" layer="94"/>
<wire x1="101.6" y1="15.24" x2="87.63" y2="15.24" width="0.254" layer="94"/>
<wire x1="0" y1="0" x2="0" y2="5.08" width="0.254" layer="94"/>
<wire x1="0" y1="5.08" x2="71.12" y2="5.08" width="0.254" layer="94"/>
<wire x1="0" y1="5.08" x2="0" y2="15.24" width="0.254" layer="94"/>
<wire x1="101.6" y1="15.24" x2="101.6" y2="5.08" width="0.254" layer="94"/>
<wire x1="71.12" y1="5.08" x2="71.12" y2="0" width="0.254" layer="94"/>
<wire x1="71.12" y1="5.08" x2="87.63" y2="5.08" width="0.254" layer="94"/>
<wire x1="71.12" y1="0" x2="101.6" y2="0" width="0.254" layer="94"/>
<wire x1="87.63" y1="15.24" x2="87.63" y2="5.08" width="0.254" layer="94"/>
<wire x1="87.63" y1="15.24" x2="0" y2="15.24" width="0.254" layer="94"/>
<wire x1="87.63" y1="5.08" x2="101.6" y2="5.08" width="0.254" layer="94"/>
<wire x1="101.6" y1="5.08" x2="101.6" y2="0" width="0.254" layer="94"/>
<wire x1="0" y1="15.24" x2="0" y2="22.86" width="0.254" layer="94"/>
<wire x1="101.6" y1="35.56" x2="0" y2="35.56" width="0.254" layer="94"/>
<wire x1="101.6" y1="35.56" x2="101.6" y2="22.86" width="0.254" layer="94"/>
<wire x1="0" y1="22.86" x2="101.6" y2="22.86" width="0.254" layer="94"/>
<wire x1="0" y1="22.86" x2="0" y2="35.56" width="0.254" layer="94"/>
<wire x1="101.6" y1="22.86" x2="101.6" y2="15.24" width="0.254" layer="94"/>
<text x="1.27" y="1.27" size="2.54" layer="94" font="vector">Date:</text>
<text x="12.7" y="1.27" size="2.54" layer="94" font="vector">&gt;LAST_DATE_TIME</text>
<text x="72.39" y="1.27" size="2.54" layer="94" font="vector">Sheet:</text>
<text x="86.36" y="1.27" size="2.54" layer="94" font="vector">&gt;SHEET</text>
<text x="88.9" y="11.43" size="2.54" layer="94" font="vector">REV:</text>
<text x="1.524" y="17.78" size="2.54" layer="94" font="vector">TITLE:</text>
<text x="1.27" y="11.43" size="2.54" layer="94" font="vector">Document Number:</text>
<text x="15.494" y="17.78" size="2.7432" layer="94" font="vector">&gt;DRAWING_NAME</text>
</symbol>
</symbols>
<devicesets>
<deviceset name="FRAME-LETTER" prefix="FRAME">
<description>&lt;b&gt;Schematic Frame&lt;/b&gt;&lt;p&gt;
Standard 8.5x11 US Letter frame</description>
<gates>
<gate name="G$1" symbol="LETTER_L" x="0" y="0"/>
<gate name="G$2" symbol="DOCFIELD" x="147.32" y="0" addlevel="must"/>
</gates>
<devices>
<device name="">
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<classes>
<class number="0" name="default" width="0" drill="0">
</class>
</classes>
<parts>
<part name="FRAME1" library="SparkFun" deviceset="FRAME-LETTER" device=""/>
</parts>
<sheets>
<sheet>
<plain>
<text x="157.734" y="26.416" size="5.08" layer="94" font="vector">Slave Daughterboard</text>
<text x="38.1" y="154.94" size="5.08" layer="91">Pin Headers</text>
<text x="55.88" y="142.24" size="5.08" layer="91">I2C Bus</text>
<text x="73.66" y="132.08" size="5.08" layer="91">Sensors</text>
<text x="91.44" y="121.92" size="5.08" layer="91">Supporting Circuitry</text>
</plain>
<instances>
<instance part="FRAME1" gate="G$1" x="0" y="0"/>
<instance part="FRAME1" gate="G$2" x="147.32" y="0"/>
</instances>
<busses>
</busses>
<nets>
</nets>
</sheet>
</sheets>
</schematic>
</drawing>
</eagle>