<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.5.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="101.6" y2="0" width="0" layer="20"/>
<wire x1="101.6" y1="0" x2="101.6" y2="81.28" width="0" layer="20"/>
<wire x1="101.6" y1="81.28" x2="0" y2="81.28" width="0" layer="20"/>
<wire x1="0" y1="81.28" x2="0" y2="0" width="0" layer="20"/>
</plain>
<libraries>
<library name="SparkFun-DigitalIC">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find all manner of digital ICs- microcontrollers, memory chips, logic chips, FPGAs, etc.&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="TQFP32-08">
<description>&lt;B&gt;Thin Plasic Quad Flat Package&lt;/B&gt; Grid 0.8 mm</description>
</package>
<package name="SO014">
</package>
</packages>
</library>
<library name="SparkFun-FreqCtrl">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find crystals and oscillators and other things that go "tick".&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="RESONATOR-SMD">
</package>
</packages>
</library>
<library name="SparkFun-Capacitors">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find resistors, capacitors, inductors, test points, jumper pads, etc.&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="0603-CAP">
</package>
<package name="EIA3528">
</package>
</packages>
</library>
<library name="SparkFun-Resistors">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find resistors, capacitors, inductors, test points, jumper pads, etc.&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="0603-RES">
</package>
</packages>
</library>
<library name="SparkFun-PowerIC">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find drivers, regulators, and amplifiers.&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="SSOP24">
</package>
</packages>
</library>
<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="SCREWTERMINAL-3.5MM-2_LOCK">
</package>
<package name="FTDI_DEVICE_SIDE">
<description>Package for devices meant to mate to an FTDI connector.</description>
</package>
<package name="2X3_LOCK">
</package>
</packages>
</library>
<library name="microchip">
<description>&lt;b&gt;Microchip PIC Microcontrollers and other Devices&lt;/b&gt;&lt;p&gt;
Based on the following sources :
&lt;ul&gt;
&lt;li&gt;Microchip Data Book, 1993
&lt;li&gt;THE EMERGING WORLD STANDARD, 1995/1996
&lt;li&gt;Microchip, Technical Library CD-ROM, June 1998
&lt;li&gt;www.microchip.com
&lt;/ul&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="SO28W">
<description>&lt;B&gt;28-Lead Plastic Small Outline (SO) &lt;/B&gt; Wide, 300 mil Body (SOIC)&lt;/B&gt;&lt;p&gt;
Source: http://ww1.microchip.com/downloads/en/devicedoc/39632c.pdf</description>
</package>
</packages>
</library>
<library name="SparkFun-AnalogIC">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find all manner of analog ICs- DACs, ADCs, video chips, op-amps, and others.&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-SOP8">
<description>&lt;b&gt;8M, 8-Lead, 0.118" Wide, Miniature Small Outline Package&lt;/b&gt;&lt;p&gt;
MSOP&lt;br&gt;
8M-Package doc1097.pdf</description>
</package>
</packages>
</library>
<library name="egnor-eagle">
<packages>
<package name="TO263-5">
<description>&lt;b&gt;TO-263&lt;/b&gt;</description>
</package>
<package name="PEG-SOCKET">
</package>
<package name="06132">
</package>
<package name="SOIC8">
<description>&lt;b&gt;Small Outline IC&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="holes">
<description>&lt;b&gt;Mounting Holes and Pads&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="2,8">
<description>&lt;b&gt;MOUNTING HOLE&lt;/b&gt; 2.8 mm with drill center</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="UC" library="SparkFun-DigitalIC" package="TQFP32-08" value="ATMEGA328P">
<attribute name="PROD_ID" value="IC-09069"/>
</element>
<element name="Y_UC" library="SparkFun-FreqCtrl" package="RESONATOR-SMD" value="16MHz">
<attribute name="PROD_ID" value="XTAL-08900"/>
</element>
<element name="C_UC" library="SparkFun-Capacitors" package="0603-CAP" value="0.1uF">
<attribute name="PROD_ID" value="CAP-00810"/>
</element>
<element name="R_RESET" library="SparkFun-Resistors" package="0603-RES" value="10K">
<attribute name="PROD_ID" value="RES-00824"/>
</element>
<element name="C_FTDI" library="SparkFun-Capacitors" package="0603-CAP" value="0.1uF">
<attribute name="PROD_ID" value="CAP-00810"/>
</element>
<element name="MC" library="SparkFun-PowerIC" package="SSOP24" value="TB6612FNG">
<attribute name="PROD_ID" value="IC-09363"/>
</element>
<element name="MOTOR_A" library="SparkFun-Connectors" package="SCREWTERMINAL-3.5MM-2_LOCK" value="M023.5MM_LOCK"/>
<element name="MOTOR_B" library="SparkFun-Connectors" package="SCREWTERMINAL-3.5MM-2_LOCK" value="M023.5MM_LOCK"/>
<element name="BATT" library="SparkFun-Connectors" package="SCREWTERMINAL-3.5MM-2_LOCK" value="M023.5MM_LOCK"/>
<element name="C_MC" library="SparkFun-Capacitors" package="0603-CAP" value="0.1uF">
<attribute name="PROD_ID" value="CAP-00810"/>
</element>
<element name="GPIO1" library="microchip" package="SO28W" value="MCP23017SO">
<attribute name="OC_NEWARK" value="31K2958"/>
<attribute name="MPN" value="MCP23017-E/SO"/>
<attribute name="MF" value="MICROCHIP"/>
<attribute name="OC_FARNELL" value="1332087"/>
</element>
<element name="C_GPIO1" library="SparkFun-Capacitors" package="0603-CAP" value="0.1uF">
<attribute name="PROD_ID" value="CAP-00810"/>
</element>
<element name="GPIO2" library="microchip" package="SO28W" value="MCP23017SO">
<attribute name="OC_NEWARK" value="31K2958"/>
<attribute name="MPN" value="MCP23017-E/SO"/>
<attribute name="MF" value="MICROCHIP"/>
<attribute name="OC_FARNELL" value="1332087"/>
</element>
<element name="C_GPIO2" library="SparkFun-Capacitors" package="0603-CAP" value="0.1uF">
<attribute name="PROD_ID" value="CAP-00810"/>
</element>
<element name="JP2" library="SparkFun-Connectors" package="FTDI_DEVICE_SIDE" value="FTDI_DEVICE"/>
<element name="JP1" library="SparkFun-Connectors" package="2X3_LOCK" value="AVR_ICSP"/>
<element name="BUFFER" library="SparkFun-DigitalIC" package="SO014" value="74ACT125D"/>
<element name="C_BUF" library="SparkFun-Capacitors" package="0603-CAP" value="0.1uF">
<attribute name="PROD_ID" value="CAP-00810"/>
</element>
<element name="C_DAC" library="SparkFun-Capacitors" package="0603-CAP" value="0.1uF">
<attribute name="PROD_ID" value="CAP-00810"/>
</element>
<element name="AMP" library="SparkFun-AnalogIC" package="POWER-SOP8" value="TPA2005D1DGN"/>
<element name="C_AMP+" library="SparkFun-Capacitors" package="0603-CAP" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="R_AMP+" library="SparkFun-Resistors" package="0603-RES" value="150k"/>
<element name="C_AMP-" library="SparkFun-Capacitors" package="0603-CAP" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="R_AMP-" library="SparkFun-Resistors" package="0603-RES" value="150k"/>
<element name="C_AMP" library="SparkFun-Capacitors" package="0603-CAP" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="SPEAKER" library="SparkFun-Connectors" package="SCREWTERMINAL-3.5MM-2_LOCK" value="M023.5MM_LOCK"/>
<element name="R_DACREF" library="SparkFun-Resistors" package="0603-RES" value="1K">
<attribute name="PROD_ID" value="RES-07856"/>
</element>
<element name="C_DACREF" library="SparkFun-Capacitors" package="0603-CAP" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="C_MOT" library="SparkFun-Capacitors" package="0603-CAP" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="CIN_VR50" library="SparkFun-Capacitors" package="0603-CAP" value="10uF">
<attribute name="PROD_ID" value="CAP-11015"/>
</element>
<element name="CIN_VR33" library="SparkFun-Capacitors" package="0603-CAP" value="10uF">
<attribute name="PROD_ID" value="CAP-11015"/>
</element>
<element name="R_ADC+" library="SparkFun-Resistors" package="0603-RES" value="10K">
<attribute name="PROD_ID" value="RES-00824"/>
</element>
<element name="R_ADC-" library="SparkFun-Resistors" package="0603-RES" value="10K">
<attribute name="PROD_ID" value="RES-00824"/>
</element>
<element name="C_ADC" library="SparkFun-Capacitors" package="0603-CAP" value="1.0uF">
<attribute name="PROD_ID" value="CAP-00868"/>
</element>
<element name="VR33" library="egnor-eagle" package="TO263-5" value="NCP59151DS33"/>
<element name="COUT_VR50" library="SparkFun-Capacitors" package="EIA3528" value="47uF">
<attribute name="PROD_ID" value="CAP-08310"/>
</element>
<element name="COUT_VR33" library="SparkFun-Capacitors" package="EIA3528" value="47uF">
<attribute name="PROD_ID" value="CAP-08310"/>
</element>
<element name="P1" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="P2" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="P3" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="P4" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="P5" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="P6" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="P7" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="P8" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="P9" library="egnor-eagle" package="PEG-SOCKET" value="PEG-SOCKET"/>
<element name="U$2" library="holes" package="2,8" value=""/>
<element name="U$4" library="holes" package="2,8" value=""/>
<element name="U$5" library="holes" package="2,8" value=""/>
<element name="U$6" library="holes" package="2,8" value=""/>
<element name="VR50" library="egnor-eagle" package="TO263-5" value="NCP59151DS50"/>
<element name="SDCARD" library="egnor-eagle" package="06132" value="SDMMC06132"/>
<element name="DAC" library="egnor-eagle" package="SOIC8" value="MCP4921-E/SN"/>
</elements>
<signals>
<signal name="/RESET">
<contactref element="UC" pad="29"/>
<contactref element="R_RESET" pad="2"/>
<contactref element="JP1" pad="5"/>
<contactref element="C_FTDI" pad="2"/>
</signal>
<signal name="5V">
<contactref element="UC" pad="18"/>
<contactref element="UC" pad="6"/>
<contactref element="R_RESET" pad="1"/>
<contactref element="C_UC" pad="2"/>
<contactref element="UC" pad="4"/>
<contactref element="JP2" pad="P$4"/>
<contactref element="COUT_VR50" pad="A"/>
<contactref element="MC" pad="20"/>
<contactref element="MC" pad="19"/>
<contactref element="C_MC" pad="2"/>
<contactref element="GPIO1" pad="9"/>
<contactref element="GPIO1" pad="18"/>
<contactref element="C_GPIO1" pad="2"/>
<contactref element="GPIO2" pad="9"/>
<contactref element="GPIO2" pad="18"/>
<contactref element="C_GPIO2" pad="2"/>
<contactref element="GPIO2" pad="15"/>
<contactref element="JP1" pad="2"/>
<contactref element="AMP" pad="1"/>
<contactref element="C_AMP" pad="1"/>
<contactref element="AMP" pad="6"/>
<contactref element="C_DAC" pad="2"/>
<contactref element="R_DACREF" pad="2"/>
<contactref element="VR50" pad="4"/>
<contactref element="VR50" pad="5"/>
<contactref element="DAC" pad="1"/>
</signal>
<signal name="GND">
<contactref element="UC" pad="21"/>
<contactref element="UC" pad="5"/>
<contactref element="Y_UC" pad="2"/>
<contactref element="C_UC" pad="1"/>
<contactref element="UC" pad="3"/>
<contactref element="JP2" pad="P$5"/>
<contactref element="JP2" pad="P$6"/>
<contactref element="MC" pad="3"/>
<contactref element="MC" pad="4"/>
<contactref element="MC" pad="9"/>
<contactref element="MC" pad="10"/>
<contactref element="MC" pad="18"/>
<contactref element="C_MC" pad="1"/>
<contactref element="C_MOT" pad="2"/>
<contactref element="GPIO1" pad="10"/>
<contactref element="GPIO1" pad="15"/>
<contactref element="GPIO1" pad="16"/>
<contactref element="GPIO1" pad="17"/>
<contactref element="C_GPIO1" pad="1"/>
<contactref element="GPIO2" pad="10"/>
<contactref element="GPIO2" pad="16"/>
<contactref element="GPIO2" pad="17"/>
<contactref element="C_GPIO2" pad="1"/>
<contactref element="JP1" pad="6"/>
<contactref element="BUFFER" pad="1"/>
<contactref element="BUFFER" pad="4"/>
<contactref element="BUFFER" pad="7"/>
<contactref element="C_BUF" pad="1"/>
<contactref element="C_DAC" pad="1"/>
<contactref element="C_AMP-" pad="2"/>
<contactref element="AMP" pad="9"/>
<contactref element="AMP" pad="7"/>
<contactref element="C_AMP" pad="2"/>
<contactref element="C_DACREF" pad="2"/>
<contactref element="BATT" pad="2"/>
<contactref element="CIN_VR50" pad="2"/>
<contactref element="R_ADC-" pad="1"/>
<contactref element="C_ADC" pad="2"/>
<contactref element="COUT_VR50" pad="C"/>
<contactref element="CIN_VR33" pad="2"/>
<contactref element="VR33" pad="3"/>
<contactref element="VR33" pad="6"/>
<contactref element="COUT_VR33" pad="C"/>
<contactref element="VR50" pad="3"/>
<contactref element="VR50" pad="6"/>
<contactref element="VR50" pad="3"/>
<contactref element="VR50" pad="6"/>
<contactref element="SDCARD" pad="GP"/>
<contactref element="SDCARD" pad="3"/>
<contactref element="SDCARD" pad="6"/>
<contactref element="SDCARD" pad="GP"/>
<contactref element="DAC" pad="5"/>
<contactref element="DAC" pad="7"/>
</signal>
<signal name="N$1">
<contactref element="UC" pad="7"/>
<contactref element="Y_UC" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="UC" pad="8"/>
<contactref element="Y_UC" pad="3"/>
</signal>
<signal name="MOSI">
<contactref element="JP1" pad="4"/>
<contactref element="UC" pad="15"/>
<contactref element="BUFFER" pad="2"/>
</signal>
<signal name="N$4">
<contactref element="MC" pad="2"/>
<contactref element="MC" pad="1"/>
<contactref element="MOTOR_A" pad="1"/>
</signal>
<signal name="N$5">
<contactref element="MC" pad="5"/>
<contactref element="MC" pad="6"/>
<contactref element="MOTOR_A" pad="2"/>
</signal>
<signal name="N$6">
<contactref element="MOTOR_B" pad="2"/>
<contactref element="MC" pad="8"/>
<contactref element="MC" pad="7"/>
</signal>
<signal name="N$7">
<contactref element="MOTOR_B" pad="1"/>
<contactref element="MC" pad="11"/>
<contactref element="MC" pad="12"/>
</signal>
<signal name="AIN2">
<contactref element="MC" pad="22"/>
<contactref element="UC" pad="13"/>
</signal>
<signal name="AIN1">
<contactref element="MC" pad="21"/>
<contactref element="UC" pad="12"/>
</signal>
<signal name="BIN1">
<contactref element="MC" pad="17"/>
<contactref element="UC" pad="25"/>
</signal>
<signal name="BIN2">
<contactref element="MC" pad="16"/>
<contactref element="UC" pad="26"/>
</signal>
<signal name="PWMB">
<contactref element="MC" pad="15"/>
<contactref element="UC" pad="10"/>
</signal>
<signal name="PWMA">
<contactref element="MC" pad="23"/>
<contactref element="UC" pad="9"/>
</signal>
<signal name="N$8">
<contactref element="GPIO1" pad="26"/>
<contactref element="P3" pad="O2"/>
</signal>
<signal name="N$10">
<contactref element="GPIO1" pad="25"/>
<contactref element="P3" pad="O1"/>
</signal>
<signal name="N$11">
<contactref element="GPIO1" pad="24"/>
<contactref element="P2" pad="O2"/>
</signal>
<signal name="N$12">
<contactref element="GPIO1" pad="23"/>
<contactref element="P2" pad="O1"/>
</signal>
<signal name="N$13">
<contactref element="GPIO1" pad="22"/>
<contactref element="P1" pad="O2"/>
</signal>
<signal name="N$14">
<contactref element="GPIO1" pad="21"/>
<contactref element="P1" pad="O1"/>
</signal>
<signal name="N$15">
<contactref element="GPIO1" pad="6"/>
<contactref element="P6" pad="O2"/>
</signal>
<signal name="N$16">
<contactref element="GPIO1" pad="5"/>
<contactref element="P6" pad="O1"/>
</signal>
<signal name="N$17">
<contactref element="GPIO1" pad="4"/>
<contactref element="P5" pad="O2"/>
</signal>
<signal name="N$18">
<contactref element="GPIO1" pad="3"/>
<contactref element="P5" pad="O1"/>
</signal>
<signal name="N$19">
<contactref element="GPIO1" pad="2"/>
<contactref element="P4" pad="O2"/>
</signal>
<signal name="N$20">
<contactref element="GPIO1" pad="1"/>
<contactref element="P4" pad="O1"/>
</signal>
<signal name="I2">
<contactref element="GPIO2" pad="2"/>
<contactref element="P1" pad="I2"/>
<contactref element="P2" pad="I2"/>
<contactref element="P3" pad="I2"/>
<contactref element="P4" pad="I2"/>
<contactref element="P5" pad="I2"/>
<contactref element="P6" pad="I2"/>
<contactref element="P7" pad="I2"/>
<contactref element="P8" pad="I2"/>
<contactref element="P9" pad="I2"/>
</signal>
<signal name="I1">
<contactref element="GPIO2" pad="1"/>
<contactref element="P1" pad="I1"/>
<contactref element="P2" pad="I1"/>
<contactref element="P3" pad="I1"/>
<contactref element="P4" pad="I1"/>
<contactref element="P5" pad="I1"/>
<contactref element="P6" pad="I1"/>
<contactref element="P7" pad="I1"/>
<contactref element="P8" pad="I1"/>
<contactref element="P9" pad="I1"/>
</signal>
<signal name="N$24">
<contactref element="GPIO2" pad="26"/>
<contactref element="P9" pad="O2"/>
</signal>
<signal name="N$25">
<contactref element="GPIO2" pad="25"/>
<contactref element="P9" pad="O1"/>
</signal>
<signal name="N$26">
<contactref element="GPIO2" pad="24"/>
<contactref element="P8" pad="O2"/>
</signal>
<signal name="N$27">
<contactref element="GPIO2" pad="23"/>
<contactref element="P8" pad="O1"/>
</signal>
<signal name="N$28">
<contactref element="GPIO2" pad="22"/>
<contactref element="P7" pad="O2"/>
</signal>
<signal name="N$29">
<contactref element="GPIO2" pad="21"/>
<contactref element="P7" pad="O1"/>
</signal>
<signal name="I3">
<contactref element="GPIO2" pad="3"/>
<contactref element="P1" pad="I3"/>
<contactref element="P2" pad="I3"/>
<contactref element="P3" pad="I3"/>
<contactref element="P4" pad="I3"/>
<contactref element="P5" pad="I3"/>
<contactref element="P6" pad="I3"/>
<contactref element="P7" pad="I3"/>
<contactref element="P8" pad="I3"/>
<contactref element="P9" pad="I3"/>
</signal>
<signal name="SDA">
<contactref element="UC" pad="27"/>
<contactref element="GPIO1" pad="13"/>
<contactref element="GPIO2" pad="13"/>
</signal>
<signal name="SCL">
<contactref element="UC" pad="28"/>
<contactref element="GPIO1" pad="12"/>
<contactref element="GPIO2" pad="12"/>
</signal>
<signal name="SS">
<contactref element="UC" pad="14"/>
<contactref element="BUFFER" pad="12"/>
</signal>
<signal name="MISO">
<contactref element="JP1" pad="1"/>
<contactref element="UC" pad="16"/>
<contactref element="SDCARD" pad="7"/>
</signal>
<signal name="SCK">
<contactref element="JP1" pad="3"/>
<contactref element="UC" pad="17"/>
<contactref element="BUFFER" pad="5"/>
</signal>
<signal name="N$3">
<contactref element="C_FTDI" pad="1"/>
<contactref element="JP2" pad="P$1"/>
</signal>
<signal name="N$22">
<contactref element="BUFFER" pad="3"/>
<contactref element="SDCARD" pad="2"/>
</signal>
<signal name="N$23">
<contactref element="BUFFER" pad="6"/>
<contactref element="SDCARD" pad="5"/>
</signal>
<signal name="N$30">
<contactref element="BUFFER" pad="11"/>
<contactref element="SDCARD" pad="1"/>
</signal>
<signal name="3.3V">
<contactref element="BUFFER" pad="14"/>
<contactref element="C_BUF" pad="2"/>
<contactref element="VR33" pad="4"/>
<contactref element="VR33" pad="5"/>
<contactref element="COUT_VR33" pad="A"/>
<contactref element="SDCARD" pad="4"/>
</signal>
<signal name="N$32">
<contactref element="R_DACREF" pad="1"/>
<contactref element="C_DACREF" pad="1"/>
<contactref element="DAC" pad="6"/>
</signal>
<signal name="N$34">
<contactref element="C_AMP+" pad="2"/>
<contactref element="DAC" pad="8"/>
</signal>
<signal name="UC&lt;USB">
<contactref element="UC" pad="30"/>
<contactref element="JP2" pad="P$3"/>
</signal>
<signal name="UC&gt;USB">
<contactref element="UC" pad="31"/>
<contactref element="JP2" pad="P$2"/>
</signal>
<signal name="D_CS">
<contactref element="UC" pad="32"/>
<contactref element="DAC" pad="2"/>
</signal>
<signal name="D_SCK">
<contactref element="UC" pad="1"/>
<contactref element="DAC" pad="3"/>
</signal>
<signal name="D_MOSI">
<contactref element="UC" pad="2"/>
<contactref element="DAC" pad="4"/>
</signal>
<signal name="N$33">
<contactref element="C_AMP+" pad="1"/>
<contactref element="R_AMP+" pad="1"/>
</signal>
<signal name="N$35">
<contactref element="AMP" pad="4"/>
<contactref element="R_AMP-" pad="2"/>
</signal>
<signal name="N$36">
<contactref element="R_AMP-" pad="1"/>
<contactref element="C_AMP-" pad="1"/>
</signal>
<signal name="N$37">
<contactref element="AMP" pad="3"/>
<contactref element="R_AMP+" pad="2"/>
</signal>
<signal name="N$38">
<contactref element="AMP" pad="5"/>
<contactref element="SPEAKER" pad="1"/>
</signal>
<signal name="N$39">
<contactref element="AMP" pad="8"/>
<contactref element="SPEAKER" pad="2"/>
</signal>
<signal name="V_BATT">
<contactref element="BATT" pad="1"/>
<contactref element="CIN_VR50" pad="1"/>
<contactref element="R_ADC+" pad="2"/>
<contactref element="MC" pad="13"/>
<contactref element="MC" pad="14"/>
<contactref element="MC" pad="24"/>
<contactref element="C_MOT" pad="1"/>
<contactref element="CIN_VR33" pad="1"/>
<contactref element="VR33" pad="2"/>
<contactref element="VR33" pad="1"/>
<contactref element="VR50" pad="2"/>
<contactref element="VR50" pad="1"/>
</signal>
<signal name="N$21">
<contactref element="R_ADC+" pad="1"/>
<contactref element="R_ADC-" pad="2"/>
<contactref element="UC" pad="23"/>
<contactref element="C_ADC" pad="1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
