<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.1.1">
<drawing>
<board>
<plain>
<hole x="11" y="5" drill="2.2"/>
<hole x="51" y="5" drill="2.2"/>
<hole x="11" y="37" drill="2.2"/>
<hole x="51" y="37" drill="2.2"/>
<text>SW in</text>
<text>MAX_SPD</text>
<text>KVAL</text>
<text>Vin</text>
<text>+V</text>
<text>SW</text>
<text>GND</text>
<text>1A</text>
<text>2A</text>
<text>2B</text>
<text>1B</text>
<text>3.3V</text>
<text>GND</text>
<text>RXI</text>
<text>TXO</text>
<text>DTR</text>
<text>RESET</text>
<text>One-knob Stepper Board</text>
<text>rev.2018-07-13</text>
<text>GND</text>
<text>D6</text>
<text>D5</text>
<text>D4</text>
<text>D3</text>
<text>D2</text>
<text>3V</text>
<text>A3</text>
<text>A2</text>
<text>A7</text>
<text>Max 32V</text>
<text>CCEP-101</text>
<text>A1</text>
<text>A2</text>
<text>A6</text>
<wire x1="0" y1="5" x2="2" y2="5" width="0.3" layer="20"/>
<wire x1="2" y1="5" x2="5" y2="2" width="0.3" layer="20" curve="-90"/>
<wire x1="5" y1="2" x2="5" y2="0" width="0.3" layer="20"/>
<wire x1="5" y1="0" x2="57" y2="0" width="0.3" layer="20"/>
<wire x1="57" y1="0" x2="57" y2="2" width="0.3" layer="20"/>
<wire x1="57" y1="2" x2="60" y2="5" width="0.3" layer="20" curve="-90"/>
<wire x1="60" y1="5" x2="62" y2="5" width="0.3" layer="20"/>
<wire x1="62" y1="37" x2="60" y2="37" width="0.3" layer="20"/>
<wire x1="60" y1="37" x2="57" y2="40" width="0.3" layer="20" curve="-90"/>
<wire x1="57" y1="40" x2="57" y2="42" width="0.3" layer="20"/>
<wire x1="57" y1="42" x2="5" y2="42" width="0.3" layer="20"/>
<wire x1="5" y1="42" x2="5" y2="40" width="0.3" layer="20"/>
<wire x1="5" y1="40" x2="2" y2="37" width="0.3" layer="20" curve="-90"/>
<wire x1="2" y1="37" x2="0" y2="37" width="0.3" layer="20"/>
<wire x1="0" y1="5" x2="0" y2="37" width="0.3" layer="20"/>
<wire x1="62" y1="37" x2="62" y2="5" width="0.3" layer="20"/>
</plain>
<libraries>
<library name="_kantaParts">
<packages>
<package name="CRYSTAL-OSC-SMD-3.2X2.5">
<description>&lt;b&gt;Crystal Oscillator&lt;/b&gt;&lt;br /&gt;
SMD 3.2x2.5</description>
</package>
<package name="RK09">
<description>&lt;b&gt;ALPS RK09 series&lt;/b&gt;&lt;br /&gt;
&lt;a href="http://www.alps.com/prod/info/J/HTML/Potentiometer/RotaryPotentiometers/RK09K/RK09K1130A5R.html"&gt;http://www.alps.com/prod/info/J/HTML/Potentiometer/RotaryPotentiometers/RK09K/RK09K1130A5R.html&lt;/a&gt;</description>
</package>
<package name="TRIMMER_T73XX">
<description>&lt;b&gt;1/4" Square Single-Turn Cermet Sealed Trimmer&lt;/b&gt;&lt;br /&gt;
Vishay T73XX Series&lt;br /&gt;
&lt;a href="https://jp.rs-online.com/web/p/products/8509625/"&gt;RS 850-9625&lt;/a&gt;</description>
</package>
<package name="NICHICON_D10">
</package>
<package name="MSTBA4">
<description>&lt;b&gt;PHOENIX&lt;/b&gt;
MSTBA4 with small pad</description>
</package>
<package name="FIDUCIAL_MARKER_PBAN">
<description>Fiducial Marker P-ban standard</description>
</package>
<package name="CONFUSEDELECTRONICS_LOGO_12MM">
</package>
</packages>
</library>
<library name="jst-xa">
<description>&lt;b&gt;JST Connectors XA Series&lt;/b&gt;
&lt;p&gt;
&lt;author&gt;Created by yuhki50@gmail.com&lt;/author&gt;
&lt;/p&gt;</description>
<packages>
<package name="S4B-XASK-1">
</package>
<package name="B3B-XASK-1">
</package>
</packages>
</library>
<library name="SparkFun-DiscreteSemi">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find discrete semiconductors- transistors, diodes, TRIACs, optoisolators, 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="SOT23">
<description>&lt;b&gt;SOT-23&lt;/b&gt;</description>
</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; 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="HTSSOP28_NO_THERMAL">
</package>
</packages>
</library>
<library name="Seeed-Capacitor">
<packages>
<package name="C0603">
<description>&lt;b&gt;0603&lt;b&gt;&lt;p&gt;</description>
</package>
</packages>
</library>
<library name="Seeed-Resistor">
<packages>
<package name="R0603">
</package>
</packages>
</library>
<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="2X3-NS">
</package>
</packages>
</library>
<library name="Seeed-IC">
<packages>
<package name="TQFP32-0.8-7X7MM">
<description>&lt;B&gt;Thin Plasic Quad Flat Package&lt;/B&gt; Grid 0.8 mm</description>
</package>
</packages>
</library>
<library name="Seeed-Switch">
<packages>
<package name="SW4-SMD-5.2X5.2X1.5MM">
</package>
</packages>
</library>
<library name="Seeed-Crystal Oscillator">
<packages>
<package name="X3-SMD-3.6X1.3X0.8MM">
</package>
</packages>
</library>
<library name="Seeed-Resistor">
<packages>
<package name="R0603">
</package>
</packages>
</library>
<library name="Seeed-LED">
<packages>
<package name="LED-0603">
</package>
</packages>
</library>
<library name="Seeed-Capacitor">
<packages>
<package name="C0402">
<description>&lt;b&gt;0402&lt;b&gt;&lt;p&gt;</description>
</package>
<package name="C0603">
<description>&lt;b&gt;0603&lt;b&gt;&lt;p&gt;</description>
</package>
<package name="C1206">
</package>
<package name="C0805">
<description>&lt;b&gt;0805&lt;b&gt;&lt;p&gt;</description>
</package>
</packages>
</library>
<library name="Seeed-Transistor">
<packages>
<package name="SOT-23">
<description>&lt;b&gt;SOT23&lt;/b&gt;</description>
</package>
</packages>
</library>
<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="1X06_LOCK">
<description>&lt;h3&gt;Plated Through Hole - 6 Pin with Locking Footprint&lt;/h3&gt;
Holes are offset 0.005" from center, locking pins in place during soldering.
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:6&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_06&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
<package name="POWER_JACK_PTH">
<description>&lt;h3&gt;DC Barrel Power Jack/Connector PTH&lt;/h3&gt;
5.5mm jack, 2.1mm center pole diameter
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count: 3&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=”https://www.sparkfun.com/datasheets/Prototyping/Barrel-Connector-PJ-202A.pdf”&gt;Datasheet referenced for footprint&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;POWER_JACK&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
<package name="2X5_NOSILK">
<description>&lt;h3&gt;Plated Through Hole - 2x5 No Silk Outline&lt;/h3&gt;
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:10&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_05x2&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="CN1" library="jst-xa" package="S4B-XASK-1" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="CN2" library="jst-xa" package="B3B-XASK-1" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="D4" library="SparkFun-DiscreteSemi" package="SOT23" value="BAV99">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="DIO-10647"/>
<attribute name="VALUE"/>
</element>
<element name="Q1" library="_kantaParts" package="CRYSTAL-OSC-SMD-3.2X2.5" value="24MHz">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U2" library="SparkFun-PowerIC" package="HTSSOP28_NO_THERMAL" value="L6470 ">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C4" library="Seeed-Capacitor" package="C0603" value="100nf">
<attribute name="MPN" value="CC0603KRX7R9BB104"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="Seeed-Resistor" package="R0603" value="10K 1/10W">
<attribute name="MPN" value="RC0603JR-0710KL"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C1" library="Seeed-Capacitor" package="C0603" value="100nf">
<attribute name="MPN" value="CC0603KRX7R9BB104"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="Y1" library="Seeed-Crystal Oscillator" package="X3-SMD-3.6X1.3X0.8MM" value="8MHZ">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="ICSP" library="SparkFun-Connectors" package="2X3-NS" value="AVR_SPI_PRG_6NS">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C2" library="Seeed-Capacitor" package="C0603" value="100nf">
<attribute name="MPN" value="CC0603KRX7R9BB104"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U1" library="Seeed-IC" package="TQFP32-0.8-7X7MM" value="ATMEGA328P-AU-TQFP32">
<attribute name="MPN" value="ATMEGA328P-AU"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="SW1" library="Seeed-Switch" package="SW4-SMD-5.2X5.2X1.5MM" value="SKQGADE010">
<attribute name="MPN" value="SKQGADE010"/>
<attribute name="NAME"/>
</element>
<element name="R3" library="Seeed-Resistor" package="R0603" value="470R">
<attribute name="MPN" value="RC0603JR-07470RL"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="Seeed-Resistor" package="R0603" value="470R">
<attribute name="MPN" value="RC0603JR-07470RL"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="FLAG" library="Seeed-LED" package="LED-0603" value="RED-0603">
<attribute name="MPN" value="19-217-R6C-AL1M2VY-3T"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="BUSY" library="Seeed-LED" package="LED-0603" value="YELLOW-0603">
<attribute name="MPN" value="19-217-Y5C-AM1N1VY-3T"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C6" library="Seeed-Capacitor" package="C0603" value="100nf">
<attribute name="MPN" value="CC0603KRX7R9BB104"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C12" library="Seeed-Capacitor" package="C0805" value="2.2uf">
<attribute name="MPN" value="CC0805KKX7R8BB225"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C10" library="Seeed-Capacitor" package="C0603" value="10nf">
<attribute name="MPN" value="CC0603KRX7R9BB103"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C11" library="Seeed-Capacitor" package="C0603" value="220nf">
<attribute name="MPN" value="CC0603KRX7R8BB224"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C13" library="Seeed-Capacitor" package="C0402" value="10nf">
<attribute name="MPN" value="CC0402KRX7R9BB103"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C8" library="Seeed-Capacitor" package="C1206" value="47uF">
<attribute name="MPN" value="GRM31CR60J107ME39L"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C7" library="Seeed-Capacitor" package="C0805" value="10uf">
<attribute name="MPN" value="CC0805ZKY5V6BB106"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R6" library="Seeed-Resistor" package="R0603" value="100R">
<attribute name="MPN" value="RC0603JR-07100RL"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="Seeed-Resistor" package="R0603" value="10K 1/10W">
<attribute name="MPN" value="RC0603JR-0710KL"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="Q2" library="Seeed-Transistor" package="SOT-23" value="BSS138W-7-F">
<attribute name="MPN" value="BSS138W-7-F"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C5" library="Seeed-Capacitor" package="C0603" value="100nf">
<attribute name="MPN" value="CC0603KRX7R9BB104"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="J1" library="SparkFun-Connectors" package="1X06_LOCK" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="VR1" library="_kantaParts" package="RK09" value="10k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="Seeed-Resistor" package="R0603" value="470R">
<attribute name="MPN" value="RC0603JR-07470RL"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="3V" library="Seeed-LED" package="LED-0603" value="GREEN-0603">
<attribute name="MPN" value="19-217-G7C-AN1P2-3T"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="J2" library="SparkFun-Connectors" package="POWER_JACK_PTH" value="POWER_JACK">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CONN-08197"/>
<attribute name="VALUE"/>
</element>
<element name="VR2" library="_kantaParts" package="TRIMMER_T73XX" value="10k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="VR3" library="_kantaParts" package="TRIMMER_T73XX" value="10k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="Seeed-Capacitor" package="C0603" value="100nf">
<attribute name="MPN" value="CC0603KRX7R9BB104"/>
<attribute name="NAME"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C9" library="_kantaParts" package="NICHICON_D10" value="330uF/35V">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="X1" library="_kantaParts" package="MSTBA4" value="M04_MSTBA4">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="J5" library="SparkFun-Connectors" package="2X5_NOSILK" value="">
<attribute name="VALUE"/>
</element>
<element name="U$2" library="_kantaParts" package="FIDUCIAL_MARKER_PBAN" value=""/>
<element name="U$3" library="_kantaParts" package="FIDUCIAL_MARKER_PBAN" value=""/>
<element name="U$4" library="_kantaParts" package="CONFUSEDELECTRONICS_LOGO_12MM" value=""/>
</elements>
<signals>
<signal name="GND">
<contactref element="CN2" pad="1"/>
<contactref element="U2" pad="5"/>
<contactref element="U2" pad="21"/>
<contactref element="U2" pad="9"/>
<contactref element="U2" pad="13"/>
<contactref element="U2" pad="27"/>
<contactref element="U2" pad="29"/>
<contactref element="Q1" pad="2"/>
<contactref element="C4" pad="1"/>
<contactref element="C2" pad="1"/>
<contactref element="U1" pad="3"/>
<contactref element="U1" pad="21"/>
<contactref element="U1" pad="5"/>
<contactref element="SW1" pad="3"/>
<contactref element="Y1" pad="2"/>
<contactref element="ICSP" pad="6"/>
<contactref element="C6" pad="1"/>
<contactref element="C12" pad="1"/>
<contactref element="C10" pad="1"/>
<contactref element="C8" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="Q2" pad="2"/>
<contactref element="C5" pad="1"/>
<contactref element="J1" pad="6"/>
<contactref element="VR1" pad="1"/>
<contactref element="VR1" pad="P$4"/>
<contactref element="VR1" pad="P$5"/>
<contactref element="3V" pad="-"/>
<contactref element="J2" pad="GND"/>
<contactref element="VR2" pad="P$3"/>
<contactref element="VR3" pad="P$3"/>
<contactref element="C3" pad="2"/>
<contactref element="SW1" pad="4"/>
<contactref element="C9" pad="-"/>
<contactref element="J5" pad="10"/>
</signal>
<signal name="L6470_RST">
<contactref element="U2" pad="3"/>
<contactref element="R5" pad="1"/>
<contactref element="Q2" pad="3"/>
</signal>
<signal name="24V">
<contactref element="U2" pad="2"/>
<contactref element="U2" pad="26"/>
<contactref element="U2" pad="12"/>
<contactref element="U2" pad="16"/>
<contactref element="D4" pad="1"/>
<contactref element="CN2" pad="3"/>
<contactref element="C12" pad="2"/>
<contactref element="C13" pad="2"/>
<contactref element="J2" pad="PWR"/>
<contactref element="C9" pad="+"/>
</signal>
<signal name="N$42">
<contactref element="U2" pad="10"/>
<contactref element="C11" pad="1"/>
</signal>
<signal name="N$44">
<contactref element="D4" pad="2"/>
<contactref element="U2" pad="11"/>
<contactref element="C13" pad="1"/>
</signal>
<signal name="N$45">
<contactref element="U2" pad="4"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="N$46">
<contactref element="CN2" pad="2"/>
<contactref element="C10" pad="2"/>
<contactref element="R6" pad="2"/>
</signal>
<signal name="OSCOUT1">
<contactref element="U2" pad="8"/>
</signal>
<signal name="3.3V">
<contactref element="Q1" pad="4"/>
<contactref element="U2" pad="17"/>
<contactref element="U2" pad="6"/>
<contactref element="R3" pad="1"/>
<contactref element="R4" pad="1"/>
<contactref element="R1" pad="2"/>
<contactref element="C4" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="U1" pad="4"/>
<contactref element="U1" pad="6"/>
<contactref element="U1" pad="20"/>
<contactref element="U1" pad="18"/>
<contactref element="ICSP" pad="2"/>
<contactref element="C6" pad="2"/>
<contactref element="C8" pad="2"/>
<contactref element="C7" pad="2"/>
<contactref element="R5" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="J1" pad="4"/>
<contactref element="VR1" pad="3"/>
<contactref element="R2" pad="1"/>
<contactref element="VR2" pad="P$1"/>
<contactref element="VR3" pad="P$1"/>
<contactref element="C3" pad="1"/>
<contactref element="J5" pad="2"/>
</signal>
<signal name="OUT1A">
<contactref element="U2" pad="1"/>
<contactref element="CN1" pad="1"/>
<contactref element="X1" pad="1"/>
</signal>
<signal name="OUT2A">
<contactref element="U2" pad="28"/>
<contactref element="CN1" pad="2"/>
<contactref element="X1" pad="2"/>
</signal>
<signal name="OUT1B">
<contactref element="U2" pad="14"/>
<contactref element="CN1" pad="3"/>
<contactref element="X1" pad="3"/>
</signal>
<signal name="OUT2B">
<contactref element="U2" pad="15"/>
<contactref element="CN1" pad="4"/>
<contactref element="X1" pad="4"/>
</signal>
<signal name="QGOUT">
<contactref element="U2" pad="7"/>
<contactref element="Q1" pad="3"/>
</signal>
<signal name="A5">
<contactref element="U1" pad="28"/>
<contactref element="VR3" pad="P$2"/>
</signal>
<signal name="A4">
<contactref element="U1" pad="27"/>
<contactref element="VR2" pad="P$2"/>
</signal>
<signal name="N$18">
<contactref element="Y1" pad="1"/>
<contactref element="U1" pad="7"/>
</signal>
<signal name="N$20">
<contactref element="Y1" pad="3"/>
<contactref element="U1" pad="8"/>
</signal>
<signal name="RESET">
<contactref element="R1" pad="1"/>
<contactref element="C1" pad="2"/>
<contactref element="U1" pad="29"/>
<contactref element="SW1" pad="2"/>
<contactref element="ICSP" pad="5"/>
</signal>
<signal name="RXI">
<contactref element="U1" pad="30"/>
<contactref element="J1" pad="3"/>
</signal>
<signal name="TXO">
<contactref element="U1" pad="31"/>
<contactref element="J1" pad="2"/>
</signal>
<signal name="D3">
<contactref element="U1" pad="1"/>
<contactref element="J5" pad="1"/>
</signal>
<signal name="D9">
<contactref element="U1" pad="13"/>
<contactref element="U2" pad="25"/>
</signal>
<signal name="D13">
<contactref element="U1" pad="17"/>
<contactref element="ICSP" pad="3"/>
<contactref element="U2" pad="19"/>
</signal>
<signal name="D10">
<contactref element="U1" pad="14"/>
<contactref element="U2" pad="23"/>
</signal>
<signal name="D8">
<contactref element="U1" pad="12"/>
<contactref element="U2" pad="24"/>
<contactref element="FLAG" pad="-"/>
</signal>
<signal name="D5">
<contactref element="U1" pad="9"/>
<contactref element="J5" pad="5"/>
</signal>
<signal name="D6">
<contactref element="U1" pad="10"/>
<contactref element="J5" pad="7"/>
</signal>
<signal name="D7">
<contactref element="U1" pad="11"/>
<contactref element="U2" pad="22"/>
<contactref element="BUSY" pad="-"/>
</signal>
<signal name="A3">
<contactref element="U1" pad="26"/>
<contactref element="J5" pad="4"/>
</signal>
<signal name="A2">
<contactref element="U1" pad="25"/>
<contactref element="J5" pad="6"/>
</signal>
<signal name="A1">
<contactref element="U1" pad="24"/>
</signal>
<signal name="D2">
<contactref element="U1" pad="32"/>
<contactref element="J5" pad="8"/>
</signal>
<signal name="D12">
<contactref element="U1" pad="16"/>
<contactref element="ICSP" pad="1"/>
<contactref element="U2" pad="18"/>
</signal>
<signal name="DTR">
<contactref element="C1" pad="1"/>
<contactref element="J1" pad="1"/>
</signal>
<signal name="D4">
<contactref element="U1" pad="2"/>
<contactref element="J5" pad="3"/>
</signal>
<signal name="D11">
<contactref element="U1" pad="15"/>
<contactref element="ICSP" pad="4"/>
<contactref element="U2" pad="20"/>
</signal>
<signal name="A6">
<contactref element="U1" pad="19"/>
<contactref element="VR1" pad="2"/>
</signal>
<signal name="A0">
<contactref element="U1" pad="23"/>
<contactref element="Q2" pad="1"/>
</signal>
<signal name="A7">
<contactref element="U1" pad="22"/>
<contactref element="J5" pad="9"/>
</signal>
<signal name="N$1">
<contactref element="FLAG" pad="+"/>
<contactref element="R3" pad="2"/>
</signal>
<signal name="N$2">
<contactref element="BUSY" pad="+"/>
<contactref element="R4" pad="2"/>
</signal>
<signal name="N$3">
<contactref element="D4" pad="3"/>
<contactref element="C11" pad="2"/>
</signal>
<signal name="N$4">
<contactref element="R2" pad="2"/>
<contactref element="3V" pad="+"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
