<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.7.0">
<drawing>
<board>
<plain>
<text>RST</text>
<text>ESP32 Matrix
Shield DMA V1.9</text>
<text>R1</text>
<text>A</text>
<text>C</text>
<text>CLK</text>
<text>OE</text>
<text>D</text>
<text>LAT</text>
<text>E'</text>
<text>B</text>
<text>E</text>
<text>GND</text>
<text>B1</text>
<text>R2</text>
<text>B2</text>
<text>G1</text>
<text>G2</text>
<text>GND</text>
<text>GND</text>
<text>GND</text>
<text>GND</text>
<text>ESP32 Matrix
Shield DMA V1.9</text>
<text>GND</text>
<wire x1="19.05" y1="59.055" x2="17.145" y2="56.515" width="0.0254" layer="20" curve="90"/>
<wire x1="17.145" y1="56.515" x2="17.145" y2="12.7" width="0.0254" layer="20"/>
<wire x1="17.145" y1="12.7" x2="19.05" y2="9.525" width="0.0254" layer="20" curve="90"/>
<wire x1="19.05" y1="9.525" x2="66.675" y2="9.525" width="0.0254" layer="20"/>
<wire x1="66.675" y1="9.525" x2="67.945" y2="10.795" width="0.0254" layer="20" curve="90"/>
<wire x1="67.945" y1="56.515" x2="66.04" y2="59.055" width="0.0254" layer="20" curve="90"/>
<wire x1="66.04" y1="59.055" x2="19.05" y2="59.055" width="0.0254" layer="20"/>
<text>R1</text>
<text>A</text>
<text>C</text>
<text>CLK</text>
<text>OE</text>
<text>D</text>
<text>LAT</text>
<text>E'</text>
<text>B</text>
<text>E</text>
<text>GND</text>
<text>B1</text>
<text>R2</text>
<text>B2</text>
<text>G0</text>
<text>G2</text>
<text>GND</text>
<text>GND</text>
<text>5V</text>
<text>5V</text>
<text>GND</text>
<text>GND</text>
<text>5V</text>
<text>5V</text>
<wire x1="67.945" y1="10.795" x2="67.945" y2="56.515" width="0.0254" layer="20"/>
<text>GND</text>
<text>VCC</text>
<text>SCL</text>
<text>SDA</text>
<text>GND</text>
<text>VCC</text>
<text>SDA</text>
<text>SCL</text>
<text>SCL</text>
<text>SDA</text>
<text>VCC</text>
<text>GND</text>
<text>E'</text>
<text>E</text>
<text>3V3</text>
<text>5V</text>
<text>I2C Voltage</text>
<text>5V</text>
<text>5V</text>
<text>T9 (IO32)</text>
<text>github.com/hallard</text>
<text>github.com/mrfaptastic</text>
<text>SDA</text>
<text>SCL</text>
<text>GND</text>
<text>VCC</text>
<text>github.com/hallard</text>
<text>github.com/mrfaptastic</text>
<text>TX</text>
<wire x1="18.415" y1="24.511" x2="18.669" y2="24.765" width="0.0254" layer="20" curve="-90"/>
<wire x1="18.669" y1="24.765" x2="25.781" y2="24.765" width="0.0254" layer="20"/>
<wire x1="25.781" y1="24.765" x2="26.035" y2="24.511" width="0.0254" layer="20" curve="-90"/>
<wire x1="26.035" y1="24.511" x2="25.781" y2="24.257" width="0.0254" layer="20" curve="-90"/>
<wire x1="25.781" y1="24.257" x2="18.669" y2="24.257" width="0.0254" layer="20"/>
<wire x1="18.669" y1="24.257" x2="18.415" y2="24.511" width="0.0254" layer="20" curve="-90"/>
<wire x1="57.15" y1="24.511" x2="57.404" y2="24.765" width="0.0254" layer="20" curve="-90"/>
<wire x1="57.404" y1="24.765" x2="63.246" y2="24.765" width="0.0254" layer="20"/>
<wire x1="63.246" y1="24.765" x2="63.5" y2="24.511" width="0.0254" layer="20" curve="-90"/>
<wire x1="63.5" y1="24.511" x2="63.246" y2="24.257" width="0.0254" layer="20" curve="-90"/>
<wire x1="63.246" y1="24.257" x2="57.404" y2="24.257" width="0.0254" layer="20"/>
<wire x1="57.404" y1="24.257" x2="57.15" y2="24.511" width="0.0254" layer="20" curve="-90"/>
<wire x1="29.845" y1="24.511" x2="30.099" y2="24.765" width="0.0254" layer="20" curve="-90"/>
<wire x1="30.099" y1="24.765" x2="37.846" y2="24.765" width="0.0254" layer="20"/>
<wire x1="37.846" y1="24.765" x2="38.1" y2="24.511" width="0.0254" layer="20" curve="-90"/>
<wire x1="38.1" y1="24.511" x2="37.846" y2="24.257" width="0.0254" layer="20" curve="-90"/>
<wire x1="37.846" y1="24.257" x2="30.099" y2="24.257" width="0.0254" layer="20"/>
<wire x1="30.099" y1="24.257" x2="29.845" y2="24.511" width="0.0254" layer="20" curve="-90"/>
<wire x1="40.64" y1="24.511" x2="40.894" y2="24.765" width="0.0254" layer="20" curve="-90"/>
<wire x1="40.894" y1="24.765" x2="51.816" y2="24.765" width="0.0254" layer="20"/>
<wire x1="51.816" y1="24.765" x2="52.07" y2="24.511" width="0.0254" layer="20" curve="-90"/>
<wire x1="52.07" y1="24.511" x2="51.816" y2="24.257" width="0.0254" layer="20" curve="-90"/>
<wire x1="51.816" y1="24.257" x2="40.894" y2="24.257" width="0.0254" layer="20"/>
<wire x1="40.894" y1="24.257" x2="40.64" y2="24.511" width="0.0254" layer="20" curve="-90"/>
<text>5V</text>
<text>5V</text>
<text>GND</text>
<text>GND</text>
<text>0</text>
<text>33</text>
<text>GND</text>
<text>D1</text>
<text>diode
bypass</text>
<text>USB</text>
<text>IO34</text>
<text>IO34</text>
</plain>
<libraries>
<library name="SparkFun-Connectors">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find connectors and sockets- basically anything that can be plugged into or onto.&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="POWER_JACK_PTH">
</package>
</packages>
</library>
<library name="_c2h">
<packages>
<package name="0805-RES">
</package>
<package name="PAD-JUMPER-3-2OF3_NC_BY_TRACE_YES_SILK_LARGE">
</package>
<package name="LOGO_C2I_015">
</package>
<package name="5202-02-N-02">
<description>&lt;b&gt;Barrier Blocks&lt;/b&gt; Sreies 5202&lt;p&gt;
Source: http://www.ebyelectro.com/PDF/5202-XX-N-02.pdf</description>
</package>
<package name="0805-CAP-LARGEPADS">
</package>
<package name="1X04_LOCK_HOLE">
</package>
<package name="PAD-SMALL">
</package>
</packages>
</library>
<library name="Seeed-Sensor">
<packages>
<package name="SNR2-3.0">
</package>
</packages>
</library>
<library name="con-molex">
<description>&lt;b&gt;Molex Connectors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="KK-156-4">
<description>&lt;b&gt;KK 156 HEADER&lt;/b&gt;&lt;p&gt;
Source: http://www.molex.com/pdm_docs/sd/026604100_sd.pdf</description>
</package>
</packages>
</library>
<library name="Connector">
<packages>
<package name="2.0_1X4">
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="1X10-BIG">
</package>
</packages>
</library>
<library name="microbuilder">
<description>&lt;h2&gt;&lt;b&gt;microBuilder.eu&lt;/b&gt; Eagle Footprint Library&lt;/h2&gt;

&lt;p&gt;Footprints for common components used in our projects and products.  This is the same library that we use internally, and it is regularly updated.  The newest version can always be found at &lt;b&gt;www.microBuilder.eu&lt;/b&gt;.  If you find this library useful, please feel free to purchase something from our online store. Please also note that all holes are optimised for metric drill bits!&lt;/p&gt;

&lt;h3&gt;Obligatory Warning&lt;/h3&gt;
&lt;p&gt;While it probably goes without saying, there are no guarantees that the footprints or schematic symbols in this library are flawless, and we make no promises of fitness for production, prototyping or any other purpose. These libraries are provided for information puposes only, and are used at your own discretion.  While we make every effort to produce accurate footprints, and many of the items found in this library have be proven in production, we can't make any promises of suitability for a specific purpose. If you do find any errors, though, please feel free to contact us at www.microbuilder.eu to let us know about it so that we can update the library accordingly!&lt;/p&gt;

&lt;h3&gt;License&lt;/h3&gt;
&lt;p&gt;This work is placed in the public domain, and may be freely used for commercial and non-commercial work with the following conditions:&lt;/p&gt;
&lt;p&gt;THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
&lt;/p&gt;</description>
<packages>
<package name="2X08">
</package>
</packages>
</library>
<library name="PatternAgents-TouchWidgets">
<description>&lt;b&gt;PatternAgents TouchWidgets Library&lt;/b&gt;
&lt;p&gt;
Schematic Symbols and PCB Layout Libraries for Touch/Capacitive Sensing Widgets
&lt;br&gt;  
Schematic and PCB Layout Libraries for Design Patterns by PatternAgents.
&lt;p&gt; 
Note Bene: This library requires some knowledge of the specific Capacitive Sensing technology
used, and the recommended best practices for that technology, to be utilized effectively. 
&lt;br&gt;In addition, you may require the PatternAgents default DRC file ("patternagents.dru") 
to accommodate the small, 14mil hole sizes used in the pads.
&lt;br&gt;
see: http://www.patternagents.com for more information, and the "Touch Widgets HowTo" pages.
&lt;p&gt;
For the CADSoft Eagle CAD program : http://www.cadsoftusa.com/download-eagle/ 
&lt;br&gt;
Github : https://github.com/PatternAgents
&lt;br&gt; 
License : http://creativecommons.org/licenses/by-sa/4.0/ (Creative Commons 4.0)
&lt;p&gt; 
THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</description>
<packages>
<package name="BUTTON_PASSIVE_6MM">
<description>Untested Layout - Experimental!</description>
</package>
</packages>
</library>
<library name="PatternAgents-ProtoPads">
<description>&lt;B&gt;PatternAgents Prototyping/Pads Library&lt;/B&gt;
&lt;P&gt;
Schematic &amp; PCB Layout Symbols for Prototyping Boards.
&lt;BR&gt;
Pads in this library have been lengthened for hand soldering &amp; prototyping.
&lt;BR&gt;
Schematic and PCB layout libraries for design patterns by PatternAgents.
&lt;P&gt;
&lt;B&gt;Note Bene:&lt;/B&gt; This library uses no special characters in the Power Supply names.
&lt;BR&gt;
For example: Where most Eagle Libraries would use "+5V" for the net name for the main 5V rail,
&lt;BR&gt;
PatternAgents uses "5V0" to avoid any special characters that break other CAD tools.
&lt;BR&gt;
This is not a problem if you live only within Eagle, but once you want to bring your netlist into
&lt;BR&gt;
other CAD or Simulation tools, your netlist can become difficult to port to other tools.
&lt;BR&gt;
Trust us, we have years of experience at this... 
&lt;P&gt;
For the CADSoft Eagle CAD program : http://www.cadsoftusa.com/download-eagle/
&lt;P&gt;
Github : https://github.com/PatternAgents
&lt;BR&gt;
License : http://creativecommons.org/licenses/by-sa/4.0/ 
(Creative Commons 4.0)
&lt;P&gt;
THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, 
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
&lt;P&gt;</description>
<packages>
<package name="1X02">
</package>
</packages>
</library>
<library name="Seeed-Diode">
<packages>
<package name="SOD-123">
<description>&lt;b&gt;Diode&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="Seeed-Capacitor">
<packages>
<package name="PC-D5.3MM">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="JACK" library="SparkFun-Connectors" package="POWER_JACK_PTH" value="POWER"/>
<element name="U1" library="Seeed-Sensor" package="SNR2-3.0" value="LDR">
<attribute name="MPN" value="PHOTORESISTOR-5528-10K"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="_c2h" package="0805-RES" value="10K">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="X2" library="con-molex" package="KK-156-4" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
<attribute name="MF" value=""/>
<attribute name="VALUE"/>
</element>
<element name="J2" library="Connector" package="2.0_1X4" value="GROOVE"/>
<element name="R3" library="_c2h" package="0805-RES" value="4K7">
<attribute name="VALUE"/>
</element>
<element name="R4" library="_c2h" package="0805-RES" value="4K7"/>
<element name="U$2" library="adafruit" package="1X10-BIG" value="">
<attribute name="VALUE"/>
</element>
<element name="U$4" library="adafruit" package="1X10-BIG" value="">
<attribute name="VALUE"/>
</element>
<element name="U$5" library="adafruit" package="1X10-BIG" value="">
<attribute name="VALUE"/>
</element>
<element name="U$6" library="adafruit" package="1X10-BIG" value="">
<attribute name="VALUE"/>
</element>
<element name="JP2" library="microbuilder" package="2X08" value="HUB75">
<attribute name="NAME"/>
</element>
<element name="JP1" library="_c2h" package="PAD-JUMPER-3-2OF3_NC_BY_TRACE_YES_SILK_LARGE" value="JUMPER-PAD-3-2OF3_NC_BY_TRACE_LARGE">
<attribute name="NAME"/>
</element>
<element name="JP3" library="_c2h" package="PAD-JUMPER-3-2OF3_NC_BY_TRACE_YES_SILK_LARGE" value="JUMPER-PAD-3-2OF3_NC_BY_TRACE_LARGE">
<attribute name="NAME"/>
</element>
<element name="B1" library="PatternAgents-TouchWidgets" package="BUTTON_PASSIVE_6MM" value=""/>
<element name="U$7" library="_c2h" package="LOGO_C2I_015" value=""/>
<element name="U$8" library="_c2h" package="LOGO_C2I_015" value=""/>
<element name="X1" library="_c2h" package="5202-02-N-02" value="5202-02-N-02"/>
<element name="D3" library="Seeed-Diode" package="SOD-123" value="20V-1A">
<attribute name="MPN" value="B5819W"/>
<attribute name="NAME"/>
</element>
<element name="JP4" library="PatternAgents-ProtoPads" package="1X02" value="M02">
<attribute name="NAME"/>
</element>
<element name="JP5" library="PatternAgents-ProtoPads" package="1X02" value="M02"/>
<element name="JP6" library="PatternAgents-ProtoPads" package="1X02" value="M02"/>
<element name="C1" library="Seeed-Capacitor" package="PC-D5.3MM" value="100uf">
<attribute name="MPN" value="KS 100uF/16V"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C2" library="_c2h" package="0805-CAP-LARGEPADS" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="_c2h" package="0805-CAP-LARGEPADS" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="J1" library="_c2h" package="1X04_LOCK_HOLE" value="I2C"/>
<element name="P2" library="_c2h" package="PAD-SMALL" value="PADSMALL"/>
</elements>
<signals>
<signal name="S$2">
</signal>
<signal name="GND">
<contactref element="JACK" pad="GND"/>
<contactref element="JACK" pad="GNDBREAK"/>
<contactref element="R1" pad="1"/>
<contactref element="X2" pad="4"/>
<contactref element="X2" pad="3"/>
<contactref element="J2" pad="4"/>
<contactref element="U$6" pad="7"/>
<contactref element="JP2" pad="4"/>
<contactref element="U$4" pad="1"/>
<contactref element="U$5" pad="1"/>
<contactref element="X1" pad="1"/>
<contactref element="JP5" pad="1"/>
<contactref element="JP6" pad="1"/>
<contactref element="C2" pad="2"/>
<contactref element="C1" pad="-"/>
<contactref element="C3" pad="2"/>
<contactref element="J1" pad="2"/>
</signal>
<signal name="3V3">
<contactref element="U1" pad="2"/>
<contactref element="U$2" pad="8"/>
<contactref element="JP3" pad="3"/>
<contactref element="C3" pad="1"/>
<contactref element="C2" pad="1"/>
<contactref element="C1" pad="+"/>
</signal>
<signal name="A0">
<contactref element="U1" pad="1"/>
<contactref element="R1" pad="2"/>
<contactref element="U$2" pad="2"/>
</signal>
<signal name="RX">
<contactref element="U$6" pad="2"/>
</signal>
<signal name="RST">
<contactref element="U$2" pad="1"/>
</signal>
<signal name="5V">
<contactref element="U$6" pad="8"/>
<contactref element="JP3" pad="1"/>
<contactref element="D3" pad="-"/>
<contactref element="JP4" pad="2"/>
</signal>
<signal name="SDA">
<contactref element="U$6" pad="4"/>
<contactref element="J2" pad="2"/>
<contactref element="R3" pad="1"/>
<contactref element="J1" pad="4"/>
</signal>
<signal name="TX">
<contactref element="U$6" pad="1"/>
</signal>
<signal name="IO39">
<contactref element="U$4" pad="3"/>
</signal>
<signal name="IO35">
<contactref element="U$4" pad="4"/>
</signal>
<signal name="IO34">
<contactref element="U$4" pad="6"/>
<contactref element="P2" pad="1"/>
</signal>
<signal name="IO15">
<contactref element="U$6" pad="9"/>
<contactref element="JP2" pad="15"/>
</signal>
<signal name="IO16">
<contactref element="U$6" pad="6"/>
<contactref element="JP2" pad="13"/>
</signal>
<signal name="IO5">
<contactref element="U$2" pad="7"/>
<contactref element="JP2" pad="11"/>
</signal>
<signal name="IO23">
<contactref element="U$2" pad="6"/>
<contactref element="JP2" pad="9"/>
</signal>
<signal name="IO25">
<contactref element="U$5" pad="3"/>
<contactref element="JP2" pad="1"/>
</signal>
<signal name="IO27">
<contactref element="U$5" pad="2"/>
<contactref element="JP2" pad="3"/>
</signal>
<signal name="IO26">
<contactref element="U$2" pad="3"/>
<contactref element="JP2" pad="2"/>
</signal>
<signal name="IO19">
<contactref element="U$2" pad="5"/>
<contactref element="JP2" pad="10"/>
</signal>
<signal name="IO32">
<contactref element="U$5" pad="4"/>
<contactref element="B1" pad="BUTTON"/>
</signal>
<signal name="IO12">
<contactref element="U$5" pad="5"/>
<contactref element="JP2" pad="6"/>
</signal>
<signal name="IO17">
<contactref element="U$6" pad="5"/>
<contactref element="JP2" pad="12"/>
</signal>
<signal name="IO4">
<contactref element="U$5" pad="6"/>
<contactref element="JP2" pad="14"/>
</signal>
<signal name="IO14">
<contactref element="U$4" pad="7"/>
<contactref element="JP2" pad="5"/>
</signal>
<signal name="IO13">
<contactref element="JP2" pad="7"/>
<contactref element="U$2" pad="9"/>
</signal>
<signal name="E">
<contactref element="JP2" pad="8"/>
<contactref element="JP1" pad="3"/>
</signal>
<signal name="E'">
<contactref element="JP2" pad="16"/>
<contactref element="JP1" pad="1"/>
</signal>
<signal name="IO0">
<contactref element="U$5" pad="7"/>
<contactref element="JP6" pad="2"/>
</signal>
<signal name="IO2">
<contactref element="U$5" pad="8"/>
</signal>
<signal name="IO33">
<contactref element="U$4" pad="5"/>
<contactref element="JP5" pad="2"/>
</signal>
<signal name="SCL">
<contactref element="U$6" pad="3"/>
<contactref element="J2" pad="1"/>
<contactref element="R4" pad="1"/>
<contactref element="J1" pad="3"/>
</signal>
<signal name="IO18">
<contactref element="U$2" pad="4"/>
<contactref element="JP1" pad="2"/>
</signal>
<signal name="IO9">
<contactref element="U$4" pad="9"/>
</signal>
<signal name="IO11">
<contactref element="U$4" pad="10"/>
</signal>
<signal name="IO7">
<contactref element="U$6" pad="10"/>
</signal>
<signal name="IO8">
<contactref element="U$5" pad="9"/>
</signal>
<signal name="IO6">
<contactref element="U$5" pad="10"/>
</signal>
<signal name="VCC">
<contactref element="J2" pad="3"/>
<contactref element="R3" pad="2"/>
<contactref element="R4" pad="2"/>
<contactref element="JP3" pad="2"/>
<contactref element="J1" pad="1"/>
</signal>
<signal name="5V-EXT">
<contactref element="JACK" pad="PWR"/>
<contactref element="X2" pad="2"/>
<contactref element="X2" pad="1"/>
<contactref element="X1" pad="2"/>
<contactref element="D3" pad="+"/>
<contactref element="JP4" pad="1"/>
</signal>
<signal name="IO10">
<contactref element="U$2" pad="10"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
