<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.0.1">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="77.5" y2="0" width="0" layer="20"/>
<wire x1="77.5" y1="0" x2="77.5" y2="28.5" width="0" layer="20"/>
<wire x1="77.5" y1="28.5" x2="0" y2="28.5" width="0" layer="20"/>
<wire x1="0" y1="28.5" x2="0" y2="0" width="0" layer="20"/>
<hole x="75.5" y="26.5" drill="3.1"/>
<hole x="75.5" y="2" drill="3.1"/>
<text>UART</text>
<text>NumiClock v1.0</text>
<text>sjm4306</text>
<text>102820</text>
<text>JLCJLCJLCJLC</text>
</plain>
<libraries>
<library name="sjm4306-custom">
<packages>
<package name="SOIC8">
<description>&lt;b&gt;SOIC-8&lt;/b&gt; CASE 751-07&lt;p&gt;
Source: http://www.onsemi.com/pub/Collateral/MC34164-D.PDF&lt;p&gt;
&lt;b&gt;D (R-PDSO-G8)&lt;/b&gt;PLATIC SMALL-OUTLINE PACKAGE&lt;br&gt;
Source: http://focus.ti.com/lit/ds/symlink/tlc27l2.pdf</description>
</package>
<package name="SO16">
<description>&lt;b&gt;SMALL OUTLINE INTEGRATED CIRCUIT&lt;/b&gt;&lt;p&gt;
body 3.9 mm/JEDEC MS-012AC</description>
</package>
<package name="0.22F_5.5V_SUPERCAP">
</package>
</packages>
</library>
<library name="SparkFun-IC-Microcontroller">
<description>&lt;h3&gt;SparkFun Microcontrollers&lt;/h3&gt;
This library contains microcontrollers.
&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="TQFP32-08">
<description>&lt;B&gt;Thin Plasic Quad Flat Package&lt;/B&gt; Grid 0.8 mm</description>
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="M0805">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
MELF 0.10 W</description>
</package>
<package name="C0805">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="CHIP-LED0805">
<description>&lt;b&gt;Hyper CHIPLED Hyper-Bright LED&lt;/b&gt;&lt;p&gt;
LB R99A&lt;br&gt;
Source: http://www.osram.convergy.de/ ... lb_r99a.pdf</description>
</package>
<package name="HC49U-V">
<description>&lt;b&gt;CRYSTAL&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="2X3">
<description>&lt;h3&gt;Plated Through Hole - 2x3&lt;/h3&gt;
&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_03x2&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
<package name="USB-B-MICRO-SMD_RED_PASTE">
<description>&lt;h3&gt;USB - microB SMD Reduced Paste&lt;/h3&gt;
 70% paste area under D+ D- USBID pins for applications where those pins aren't required, to reduce the likelihood of bridges.
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:5&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=”https://www.sparkfun.com/datasheets/Prototyping/Micro-USB.pdf”&gt;Datasheet referenced for footprint&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;USB_MICRO-B&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
<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="USB-MINIB">
<description>&lt;h3&gt;USB Type Mini-B Surface Mounted&lt;/h3&gt;
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count: 5 main, 4 shield pins&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=”https://www.sparkfun.com/datasheets/Prototyping/miniUSB-Dimensional.pdf”&gt;Datasheet referenced for footprint&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;USB_Mini-B&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="AL60P">
<description>&lt;b&gt;SPEAKER&lt;/b&gt;</description>
</package>
<package name="C0805">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="150CLZ-0810">
<description>&lt;b&gt;Aluminum electrolytic capacitors SMD (Chip)&lt;/b&gt;&lt;p&gt;
Long life base plate, very low impedance 150 CLZ&lt;p&gt;
http://www.bccomponents.com/</description>
</package>
<package name="R0603">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="C0603">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="M0805">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
MELF 0.10 W</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_PTH_RIGHT_ANGLE_KIT">
<description>&lt;h3&gt;Momentary Switch (Pushbutton) - SPST - PTH, Right-angle&lt;/h3&gt;
&lt;p&gt;Normally-open (NO) SPST momentary switches (buttons, pushbuttons).&lt;/p&gt;
&lt;p&gt;&lt;a href="http://cdn.sparkfun.com/datasheets/Components/Switches/SW016.JPG"&gt;Dimensional Drawing&lt;/a&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="OPL_Sensor-Transducer">
<description>Seeed Open Parts Library (OPL) for the Seeed Fusion PCB Assembly Service</description>
<packages>
<package name="SNR2-3.0">
</package>
</packages>
</library>
<library name="SparkFun-Clocks">
<description>&lt;h3&gt;SparkFun Clocks, Oscillators and Resonators&lt;/h3&gt;
This library contains the real-time clocks, oscillators, resonators, and crystals we use. 
&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="CRYSTAL-SMD-5X3.2-2PAD">
<description>&lt;h3&gt;5x3.2mm 2-pad SMD Crystal&lt;/h3&gt;
&lt;p&gt;&lt;a href="http://www.txccrystal.com/images/pdf/7a.pdf"&gt;Example Datasheet&lt;/a&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="diode">
<description>&lt;b&gt;Diodes&lt;/b&gt;&lt;p&gt;
Based on the following sources:
&lt;ul&gt;
&lt;li&gt;Motorola : www.onsemi.com
&lt;li&gt;Fairchild : www.fairchildsemi.com
&lt;li&gt;Philips : www.semiconductors.com
&lt;li&gt;Vishay : www.vishay.de
&lt;/ul&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="MINIMELF">
<description>&lt;b&gt;Mini Melf Diode&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="sjm4306_LOGO">
<packages>
<package name="SJM4306_SMALL_NO_MASK">
</package>
<package name="SJM4306_MEDIUM_NO_MASK">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="U$1" library="sjm4306-custom" package="SOIC8" value="DS3232MZ">
<attribute name="VALUE"/>
</element>
<element name="U2" library="SparkFun-IC-Microcontroller" package="TQFP32-08" value="ATMEGA328P_TQFP">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="IC-09069"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="adafruit" package="M0805" value="10K">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C1" library="adafruit" package="C0805" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="Y1" library="adafruit" package="HC49U-V" value="16MHz">
<attribute name="MF" value=""/>
<attribute name="MPN" value=""/>
<attribute name="NAME"/>
<attribute name="OC_FARNELL" value="1666969"/>
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="VALUE"/>
</element>
<element name="C2" library="adafruit" package="R0603" value="22pF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="adafruit" package="R0603" value="22pF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="J3" library="SparkFun-Connectors" package="2X3" value="ICSP">
<attribute name="PROD_ID" value="CONN-09701"/>
<attribute name="VALUE"/>
</element>
<element name="L" library="adafruit" package="CHIP-LED0805" value="Red">
<attribute name="NAME"/>
</element>
<element name="R3" library="adafruit" package="M0805" value="1K">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="POWER" library="SparkFun-Connectors" package="USB-B-MICRO-SMD_RED_PASTE" value="Micro_USB">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CONN-11752"/>
<attribute name="VALUE"/>
</element>
<element name="SP1" library="adafruit" package="AL60P" value="SPEAKER/AL60P">
<attribute name="NAME"/>
</element>
<element name="C8" library="adafruit" package="C0805" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C6" library="adafruit" package="150CLZ-0810" value="100uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="H" library="SparkFun-Switches" package="TACTILE_SWITCH_PTH_RIGHT_ANGLE_KIT" value="MOMENTARY-SWITCH-SPST-PTH-RIGHT-ANGLE-KIT">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CONN-10672"/>
<attribute name="SF_SKU" value="COM-10791"/>
</element>
<element name="M" library="SparkFun-Switches" package="TACTILE_SWITCH_PTH_RIGHT_ANGLE_KIT" value="MOMENTARY-SWITCH-SPST-PTH-RIGHT-ANGLE-KIT">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CONN-10672"/>
<attribute name="SF_SKU" value="COM-10791"/>
</element>
<element name="LDR" library="OPL_Sensor-Transducer" package="SNR2-3.0" value="PHOTORESISTOR-5528-10K">
<attribute name="MPN" value="PHOTORESISTOR-5528-10K"/>
<attribute name="NAME"/>
</element>
<element name="R2" library="adafruit" package="M0805" value="10K">
<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="C4" library="adafruit" package="C0805" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U$2" library="sjm4306-custom" package="SO16" value="CH340G">
<attribute name="VALUE"/>
</element>
<element name="C5" library="adafruit" package="C0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="adafruit" package="M0805" value="1K">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="adafruit" package="M0805" value="1K">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C7" library="adafruit" package="C0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C9" library="adafruit" package="C0603" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="Y2" library="SparkFun-Clocks" package="CRYSTAL-SMD-5X3.2-2PAD" value="12MHz">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R6" library="adafruit" package="M0805" value="4.7K">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R7" library="adafruit" package="M0805" value="4.7K">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R8" library="adafruit" package="M0805" value="2.2K">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="D1" library="diode" package="MINIMELF" value="">
<attribute name="NAME"/>
<attribute name="POPULARITY" value="25"/>
<attribute name="VALUE"/>
</element>
<element name="U$3" library="sjm4306-custom" package="0.22F_5.5V_SUPERCAP" value="0.22F_5.5V_SUPERCAP"/>
<element name="J2" library="SparkFun-Connectors" package="USB-MINIB" value="USB_MINI-B_SMT">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="CONN-08193"/>
<attribute name="SF_ID" value="PRT-00587"/>
</element>
<element name="U$4" library="sjm4306_LOGO" package="SJM4306_SMALL_NO_MASK" value=""/>
<element name="U$5" library="sjm4306_LOGO" package="SJM4306_MEDIUM_NO_MASK" value=""/>
</elements>
<signals>
<signal name="GND">
<contactref element="POWER" pad="GND"/>
<contactref element="U2" pad="21"/>
<contactref element="U2" pad="3"/>
<contactref element="U2" pad="5"/>
<contactref element="C1" pad="2"/>
<contactref element="J3" pad="6"/>
<contactref element="R3" pad="1"/>
<contactref element="C3" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="POWER" pad="SHIELD3"/>
<contactref element="POWER" pad="SHIELD1"/>
<contactref element="POWER" pad="SHIELD2"/>
<contactref element="C6" pad="-"/>
<contactref element="H" pad="2"/>
<contactref element="M" pad="2"/>
<contactref element="SP1" pad="2"/>
<contactref element="U$1" pad="5"/>
<contactref element="LDR" pad="1"/>
<contactref element="C4" pad="2"/>
<contactref element="J1" pad="2"/>
<contactref element="U$2" pad="1"/>
<contactref element="C7" pad="2"/>
<contactref element="C9" pad="2"/>
<contactref element="U$3" pad="P$2"/>
<contactref element="J2" pad="S4"/>
<contactref element="J2" pad="S3"/>
<contactref element="J2" pad="S1"/>
<contactref element="J2" pad="S2"/>
<contactref element="J2" pad="GND"/>
</signal>
<signal name="SCK">
<contactref element="J3" pad="3"/>
<contactref element="U2" pad="17"/>
<contactref element="L" pad="A"/>
</signal>
<signal name="A3">
<contactref element="U2" pad="26"/>
</signal>
<signal name="CE">
<contactref element="U2" pad="14"/>
</signal>
<signal name="SCL">
<contactref element="U2" pad="28"/>
<contactref element="U$1" pad="8"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="A0">
<contactref element="U2" pad="23"/>
<contactref element="R2" pad="1"/>
<contactref element="LDR" pad="2"/>
</signal>
<signal name="A1">
<contactref element="U2" pad="24"/>
</signal>
<signal name="5V">
<contactref element="U2" pad="18"/>
<contactref element="U2" pad="6"/>
<contactref element="U2" pad="4"/>
<contactref element="R1" pad="2"/>
<contactref element="U2" pad="20"/>
<contactref element="C1" pad="1"/>
<contactref element="J3" pad="2"/>
<contactref element="C6" pad="+"/>
<contactref element="POWER" pad="VBUS"/>
<contactref element="U$1" pad="2"/>
<contactref element="C4" pad="1"/>
<contactref element="R2" pad="2"/>
<contactref element="J1" pad="1"/>
<contactref element="R6" pad="2"/>
<contactref element="R7" pad="2"/>
<contactref element="D1" pad="A"/>
<contactref element="U$2" pad="16"/>
<contactref element="C9" pad="1"/>
<contactref element="J2" pad="VBUS"/>
</signal>
<signal name="RST">
<contactref element="U2" pad="29"/>
<contactref element="R1" pad="1"/>
<contactref element="J3" pad="5"/>
<contactref element="C5" pad="2"/>
</signal>
<signal name="N$2">
<contactref element="U2" pad="8"/>
<contactref element="Y1" pad="1"/>
<contactref element="C2" pad="1"/>
</signal>
<signal name="N$3">
<contactref element="U2" pad="7"/>
<contactref element="Y1" pad="2"/>
<contactref element="C3" pad="1"/>
</signal>
<signal name="MOSI">
<contactref element="J3" pad="4"/>
<contactref element="U2" pad="15"/>
</signal>
<signal name="MISO">
<contactref element="J3" pad="1"/>
<contactref element="U2" pad="16"/>
</signal>
<signal name="A6">
<contactref element="U2" pad="19"/>
</signal>
<signal name="A7">
<contactref element="U2" pad="22"/>
</signal>
<signal name="D0">
<contactref element="U2" pad="30"/>
<contactref element="R4" pad="2"/>
<contactref element="J2" pad="D-"/>
</signal>
<signal name="D1">
<contactref element="U2" pad="31"/>
<contactref element="R5" pad="2"/>
<contactref element="J2" pad="D+"/>
</signal>
<signal name="D2">
<contactref element="U2" pad="32"/>
<contactref element="U$1" pad="3"/>
</signal>
<signal name="D3">
<contactref element="U2" pad="1"/>
<contactref element="C8" pad="2"/>
</signal>
<signal name="D4">
<contactref element="U2" pad="2"/>
<contactref element="M" pad="1"/>
</signal>
<signal name="D5">
<contactref element="U2" pad="9"/>
<contactref element="H" pad="1"/>
</signal>
<signal name="D6">
<contactref element="U2" pad="10"/>
<contactref element="J1" pad="3"/>
</signal>
<signal name="D7">
<contactref element="U2" pad="11"/>
<contactref element="J1" pad="4"/>
</signal>
<signal name="D8">
<contactref element="U2" pad="12"/>
<contactref element="J1" pad="5"/>
</signal>
<signal name="D9">
<contactref element="U2" pad="13"/>
<contactref element="J1" pad="6"/>
</signal>
<signal name="N$1">
<contactref element="L" pad="C"/>
<contactref element="R3" pad="2"/>
</signal>
<signal name="N$4">
<contactref element="SP1" pad="1"/>
<contactref element="C8" pad="1"/>
</signal>
<signal name="SDA">
<contactref element="U$1" pad="7"/>
<contactref element="U2" pad="27"/>
<contactref element="R7" pad="1"/>
</signal>
<signal name="A2">
<contactref element="U2" pad="25"/>
</signal>
<signal name="N$5">
<contactref element="U$2" pad="8"/>
<contactref element="Y2" pad="P$1"/>
</signal>
<signal name="N$10">
<contactref element="U$2" pad="7"/>
<contactref element="Y2" pad="P$2"/>
</signal>
<signal name="+3V3">
<contactref element="U$2" pad="4"/>
<contactref element="C7" pad="1"/>
</signal>
<signal name="RX">
<contactref element="U$2" pad="3"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="TX">
<contactref element="U$2" pad="2"/>
<contactref element="R4" pad="1"/>
</signal>
<signal name="N$11">
<contactref element="U$2" pad="13"/>
<contactref element="C5" pad="1"/>
</signal>
<signal name="D+">
<contactref element="U$2" pad="5"/>
<contactref element="POWER" pad="D+"/>
</signal>
<signal name="D-">
<contactref element="U$2" pad="6"/>
<contactref element="POWER" pad="D-"/>
</signal>
<signal name="N$6">
<contactref element="R8" pad="2"/>
<contactref element="D1" pad="C"/>
</signal>
<signal name="VBAT">
<contactref element="U$1" pad="6"/>
<contactref element="R8" pad="1"/>
<contactref element="U$3" pad="P$1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
