<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.3.2">
<drawing>
<board>
<plain>
<wire x1="3" y1="0" x2="62" y2="0" width="0" layer="20"/>
<wire x1="65" y1="3" x2="65" y2="27" width="0" layer="20"/>
<wire x1="62" y1="30" x2="59" y2="30" width="0" layer="20"/>
<wire x1="5.5" y1="30" x2="3" y2="30" width="0" layer="20"/>
<wire x1="0" y1="27" x2="0" y2="3" width="0" layer="20"/>
<hole x="3.5" y="3.5" drill="2.8"/>
<hole x="3.5" y="26.5" drill="2.8"/>
<hole x="61.5" y="26.5" drill="2.8"/>
<hole x="61.5" y="3.5" drill="2.8"/>
<wire x1="3" y1="0" x2="0" y2="3" width="0" layer="20" curve="-90"/>
<wire x1="65" y1="3" x2="62" y2="0" width="0" layer="20" curve="-90"/>
<wire x1="62" y1="30" x2="65" y2="27" width="0" layer="20" curve="-90"/>
<wire x1="0" y1="27" x2="3" y2="30" width="0" layer="20" curve="-90"/>
<hole x="18.1" y="32.8" drill="3"/>
<hole x="46.9" y="32.8" drill="3"/>
<hole x="18.1" y="4" drill="3"/>
<hole x="46.9" y="4" drill="3"/>
<wire x1="12" y1="36.5" x2="52.5" y2="36.5" width="0" layer="20"/>
<wire x1="12" y1="36.5" x2="5.5" y2="30" width="0" layer="20"/>
<wire x1="52.5" y1="36.5" x2="59" y2="30" width="0" layer="20"/>
</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="2X20">
<description>&lt;h3&gt;Plated Through Hole - 2x20&lt;/h3&gt;
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:40&lt;/li&gt;
&lt;li&gt;Pin pitch:0.1"&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;CONN_20x2&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="custom">
<packages>
<package name="QFN24">
</package>
<package name="VFQFPN36">
</package>
<package name="SOT23A">
</package>
<package name="SMD_CRYSTAL_7MMX5MM">
</package>
<package name="SOT223">
<description>&lt;b&gt;SOT-223&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Capacitors">
<description>&lt;h3&gt;SparkFun Capacitors&lt;/h3&gt;
This library contains capacitors. 
&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="0603">
<description>&lt;p&gt;&lt;b&gt;Generic 1608 (0603) package&lt;/b&gt;&lt;/p&gt;
&lt;p&gt;0.2mm courtyard excess rounded to nearest 0.05mm.&lt;/p&gt;</description>
</package>
<package name="CPOL-RADIAL-2.5MM-6.5MM">
<description>2.5 mm spaced PTHs with 6.5 mm diameter outline</description>
</package>
<package name="PANASONIC_C">
<description>&lt;b&gt;Panasonic Aluminium Electrolytic Capacitor VS-Serie Package E&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-IC-Comms">
<description>&lt;h3&gt;SparkFun Communication ICs&lt;/h3&gt;
This is the communications library, which contains things that exist on wired busses.  This includes USB to serial conversion ICs, like the FTDI line, plus high speed line drivers, level shifters, bus drivers, CAN transceivers and ethernet PHYs.
&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="SO14">
<description>&lt;h3&gt;SOIC - 14&lt;/h3&gt;
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:14&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;TXB0104PWR&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="pinhead+">
<packages>
<package name="1X03/90">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X03">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X02/90">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Resistors">
<description>&lt;h3&gt;SparkFun Resistors&lt;/h3&gt;
This library contains resistors. Reference designator:R. 
&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="0603">
<description>&lt;p&gt;&lt;b&gt;Generic 1608 (0603) package&lt;/b&gt;&lt;/p&gt;
&lt;p&gt;0.2mm courtyard excess rounded to nearest 0.05mm.&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="jumper">
<description>&lt;b&gt;Jumpers&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="SJ">
<description>&lt;b&gt;Solder jumper&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-LED">
<description>&lt;h3&gt;SparkFun LEDs&lt;/h3&gt;
This library contains discrete LEDs for illumination or indication, but no displays.
&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="LED-0603">
<description>&lt;B&gt;LED 0603 SMT&lt;/B&gt;&lt;p&gt;
0603, surface mount.
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count: 2&lt;/li&gt;
&lt;li&gt;Pin pitch:0.075inch &lt;/li&gt;
&lt;li&gt;Area: 0.06" x 0.03"&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;LED - BLUE&lt;/li&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Resistors_fab">
<description>&lt;h3&gt;SparkFun Resistors&lt;/h3&gt;
This library contains resistors. Reference designator:R. 
&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="0603">
<description>&lt;p&gt;&lt;b&gt;Generic 1608 (0603) package&lt;/b&gt;&lt;/p&gt;
&lt;p&gt;0.2mm courtyard excess rounded to nearest 0.05mm.&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Switches">
<description>&lt;h3&gt;SparkFun Switches, Buttons, Encoders&lt;/h3&gt;
In this library you'll find switches, buttons, joysticks, and anything that moves to create or disrupt an electrical connection.
&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="TACTILE_SWITCH_SMD_5.2MM">
<description>&lt;h3&gt;Momentary Switch (Pushbutton) - SPST - SMD, 5.2mm Square&lt;/h3&gt;
&lt;p&gt;Normally-open (NO) SPST momentary switches (buttons, pushbuttons).&lt;/p&gt;
&lt;p&gt;&lt;a href="https://www.sparkfun.com/datasheets/Components/Buttons/SMD-Button.pdf"&gt;Dimensional Drawing&lt;/a&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="J1" library="SparkFun-Connectors" package="2X20" value="RASPBERRYPI-40-PIN-GPIO_PTH_NO_SHROUD"/>
<element name="U$1" library="custom" package="QFN24" value="ICM20948"/>
<element name="C1" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="C2" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="U$3" library="custom" package="VFQFPN36" value="STM32F103T8"/>
<element name="U$2" library="custom" package="SOT23A" value="TC1185"/>
<element name="U1" library="SparkFun-IC-Comms" package="SO14" value="TXB0104">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="IC-11329"/>
<attribute name="VALUE"/>
</element>
<element name="C4" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="C5" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="C6" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="C7" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="C8" library="SparkFun-Capacitors" package="0603" value="18pF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-08267"/>
<attribute name="VALUE"/>
</element>
<element name="C9" library="SparkFun-Capacitors" package="0603" value="18pF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-08267"/>
<attribute name="VALUE"/>
</element>
<element name="Y1" library="custom" package="SMD_CRYSTAL_7MMX5MM" value="8MHz">
<attribute name="NAME"/>
</element>
<element name="C10" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="C11" library="SparkFun-Capacitors" package="0603" value="1.0uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00868"/>
<attribute name="VALUE"/>
</element>
<element name="C12" library="SparkFun-Capacitors" package="0603" value="470pF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-07884"/>
<attribute name="VALUE" value="470pF"/>
</element>
<element name="JP1" library="pinhead+" package="1X03" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C21" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="C22" library="SparkFun-Capacitors" package="0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-00810"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="SparkFun-Resistors" package="0603" value="10k">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="RES-00824"/>
<attribute name="VALUE"/>
</element>
<element name="JP2" library="pinhead+" package="1X03/90" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="SJ1" library="jumper" package="SJ" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="D1" library="SparkFun-LED" package="LED-0603" value="GREEN">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="DIO-00821"/>
<attribute name="VALUE"/>
</element>
<element name="R6" library="SparkFun-Resistors_fab" package="0603" value="470">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="RES-07869"/>
<attribute name="VALUE"/>
</element>
<element name="U$5" library="SparkFun-Switches" package="TACTILE_SWITCH_SMD_5.2MM" value="">
<attribute name="PROD_ID" value="SWCH-08247"/>
<attribute name="SF_SKU" value="COM-08720"/>
</element>
<element name="U$4" library="custom" package="SOT223" value="LD1117S50">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C13" library="SparkFun-Capacitors" package="CPOL-RADIAL-2.5MM-6.5MM" value="100uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-08439"/>
<attribute name="VALUE"/>
</element>
<element name="C14" library="SparkFun-Capacitors" package="PANASONIC_C" value="22uF">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CAP-08618"/>
<attribute name="VALUE"/>
</element>
<element name="JP3" library="pinhead+" package="1X02/90" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
</elements>
<signals>
<signal name="GND">
<contactref element="C1" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="U$1" pad="P18"/>
<contactref element="U$1" pad="P20"/>
<contactref element="C3" pad="1"/>
<contactref element="U$1" pad="P11"/>
<contactref element="J1" pad="6"/>
<contactref element="J1" pad="39"/>
<contactref element="J1" pad="9"/>
<contactref element="J1" pad="25"/>
<contactref element="J1" pad="20"/>
<contactref element="J1" pad="14"/>
<contactref element="J1" pad="30"/>
<contactref element="J1" pad="34"/>
<contactref element="U$3" pad="0"/>
<contactref element="U$3" pad="5"/>
<contactref element="U$3" pad="26"/>
<contactref element="U$3" pad="36"/>
<contactref element="U$3" pad="18"/>
<contactref element="C4" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="C6" pad="2"/>
<contactref element="C7" pad="2"/>
<contactref element="C8" pad="1"/>
<contactref element="C9" pad="1"/>
<contactref element="C10" pad="1"/>
<contactref element="C11" pad="1"/>
<contactref element="C12" pad="1"/>
<contactref element="U$2" pad="P2"/>
<contactref element="U1" pad="7"/>
<contactref element="JP1" pad="1"/>
<contactref element="C22" pad="2"/>
<contactref element="C21" pad="2"/>
<contactref element="U$3" pad="17"/>
<contactref element="R5" pad="2"/>
<contactref element="JP2" pad="1"/>
<contactref element="R6" pad="1"/>
<contactref element="U$5" pad="1"/>
<contactref element="U$5" pad="2"/>
<contactref element="U$4" pad="1"/>
<contactref element="C14" pad="-"/>
<contactref element="C13" pad="2"/>
<contactref element="JP3" pad="1"/>
</signal>
<signal name="5V">
<contactref element="U$2" pad="P1"/>
<contactref element="U$2" pad="P3"/>
<contactref element="J1" pad="2"/>
<contactref element="J1" pad="4"/>
<contactref element="U$4" pad="2"/>
<contactref element="U$4" pad="4"/>
<contactref element="C13" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="C3" pad="2"/>
<contactref element="U$1" pad="P10"/>
</signal>
<signal name="SDA_1V8">
<contactref element="U$1" pad="P24"/>
<contactref element="U1" pad="2"/>
</signal>
<signal name="SCL_1V8">
<contactref element="U$1" pad="P23"/>
<contactref element="U1" pad="3"/>
</signal>
<signal name="INT">
<contactref element="U$1" pad="P12"/>
</signal>
<signal name="3V3">
<contactref element="J1" pad="1"/>
<contactref element="J1" pad="17"/>
<contactref element="U$3" pad="19"/>
<contactref element="U$3" pad="6"/>
<contactref element="U$3" pad="27"/>
<contactref element="U$3" pad="1"/>
<contactref element="C4" pad="1"/>
<contactref element="C5" pad="1"/>
<contactref element="C6" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="U1" pad="14"/>
<contactref element="C21" pad="1"/>
<contactref element="SJ1" pad="2"/>
</signal>
<signal name="N$8">
<contactref element="U$3" pad="2"/>
<contactref element="C9" pad="2"/>
<contactref element="Y1" pad="3"/>
</signal>
<signal name="N$9">
<contactref element="U$3" pad="3"/>
<contactref element="C8" pad="2"/>
<contactref element="Y1" pad="1"/>
</signal>
<signal name="N$10">
<contactref element="U$3" pad="4"/>
<contactref element="C10" pad="2"/>
<contactref element="U$5" pad="4"/>
<contactref element="U$5" pad="3"/>
</signal>
<signal name="N$12">
<contactref element="U$2" pad="P4"/>
<contactref element="C12" pad="2"/>
</signal>
<signal name="1V8">
<contactref element="U$2" pad="P5"/>
<contactref element="C11" pad="2"/>
<contactref element="U1" pad="8"/>
<contactref element="U1" pad="1"/>
<contactref element="U$1" pad="P9"/>
<contactref element="U$1" pad="P8"/>
<contactref element="C2" pad="1"/>
<contactref element="U$1" pad="P13"/>
<contactref element="C1" pad="1"/>
<contactref element="U$1" pad="P22"/>
<contactref element="C22" pad="1"/>
</signal>
<signal name="SCL">
<contactref element="U$3" pad="33"/>
<contactref element="U1" pad="12"/>
</signal>
<signal name="SDA">
<contactref element="U$3" pad="34"/>
<contactref element="U1" pad="13"/>
</signal>
<signal name="TX">
<contactref element="JP1" pad="3"/>
<contactref element="J1" pad="8"/>
<contactref element="U$3" pad="21"/>
</signal>
<signal name="RX">
<contactref element="JP1" pad="2"/>
<contactref element="J1" pad="10"/>
<contactref element="U$3" pad="22"/>
</signal>
<signal name="N$1">
<contactref element="U$3" pad="35"/>
<contactref element="R5" pad="1"/>
<contactref element="SJ1" pad="1"/>
</signal>
<signal name="SWDIO">
<contactref element="U$3" pad="25"/>
<contactref element="JP2" pad="2"/>
</signal>
<signal name="SWCLK">
<contactref element="U$3" pad="28"/>
<contactref element="JP2" pad="3"/>
</signal>
<signal name="LED">
<contactref element="U$3" pad="10"/>
<contactref element="D1" pad="A"/>
</signal>
<signal name="N$5">
<contactref element="D1" pad="C"/>
<contactref element="R6" pad="2"/>
</signal>
<signal name="CS">
<contactref element="U$3" pad="11"/>
<contactref element="J1" pad="24"/>
</signal>
<signal name="SCK">
<contactref element="U$3" pad="12"/>
<contactref element="J1" pad="23"/>
</signal>
<signal name="MISO">
<contactref element="U$3" pad="13"/>
<contactref element="J1" pad="21"/>
</signal>
<signal name="MOSI">
<contactref element="U$3" pad="14"/>
<contactref element="J1" pad="19"/>
</signal>
<signal name="V+">
<contactref element="U$4" pad="3"/>
<contactref element="C14" pad="+"/>
<contactref element="JP3" pad="2"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
