<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.5.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="46.228" x2="220.98" y2="46.228" width="0" layer="20"/>
<wire x1="220.98" y1="46.228" x2="220.98" y2="0" width="0" layer="20"/>
<wire x1="220.98" y1="0" x2="0" y2="0" width="0" layer="20"/>
<wire x1="0" y1="0" x2="0" y2="46.228" width="0" layer="20" locked="yes"/>
<wire x1="0" y1="46.228" x2="0" y2="46.355" width="0" layer="20" locked="yes"/>
<text>3.3V
HC-05 Vcc
5V</text>
<text>Ground</text>
<text>Left</text>
<text>Right</text>
<text>HC-05
Bluetooth</text>
<text>Teensy
3.2</text>
<text>Speaker Interface</text>
<text>Amp Interface</text>
<text>LED Interface</text>
<text>Clock</text>
<text>Data</text>
<text>Px Sensor</text>
<text>SCL</text>
<text>SDA</text>
<text>Vusb</text>
<text>Ground</text>
<text>Vbat</text>
<text>Ground</text>
<text>D+</text>
<text>D-</text>
<text>3.3V</text>
<text>5V</text>
<circle x="21.844" y="10.16" radius="1.27" width="0.0254" layer="20"/>
<circle x="2.54" y="43.688" radius="1.27" width="0.0254" layer="20"/>
<circle x="61.595" y="43.688" radius="1.27" width="0.0254" layer="20"/>
<circle x="218.44" y="43.688" radius="1.27" width="0.0254" layer="20"/>
<circle x="217.932" y="3.048" radius="1.27" width="0.0254" layer="20"/>
<circle x="149.86" y="3.048" radius="1.27" width="0.0254" layer="20"/>
<circle x="132.08" y="3.048" radius="1.27" width="0.0254" layer="20"/>
<circle x="114.3" y="3.048" radius="1.27" width="0.0254" layer="20"/>
<circle x="101.6" y="3.048" radius="1.27" width="0.0254" layer="20"/>
<circle x="88.9" y="3.048" radius="1.27" width="0.0254" layer="20"/>
<text>Audio
Shield
Vcc</text>
<text>5V</text>
<text>5V</text>
<text>Ground</text>
<text>Ground</text>
<text>USB Data
Interface</text>
<text>Ground</text>
<text>Left</text>
<text>Right</text>
<text>Martone Electrode Board
Revision 1
12/5/2019</text>
</plain>
<libraries>
<library name="Teensy356">
<packages>
<package name="TEENSY_3.5/3.6">
</package>
</packages>
</library>
<library name="Star">
<packages>
<package name="DRC_S-PVSON-N10-M">
</package>
<package name="SPAD">
</package>
<package name="BDLLC">
</package>
</packages>
</library>
<library name="ArduinoPinHeaders">
<packages>
<package name="1X6">
</package>
</packages>
</library>
<library name="74HC">
<packages>
<package name="DIL16">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="Teensy_Audioshield">
<packages>
<package name="AUDIOSHIELD">
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="C0603K">
<description>&lt;b&gt;Ceramic Chip Capacitor KEMET 0603 Reflow solder&lt;/b&gt;&lt;p&gt;
Metric Code Size 1608</description>
</package>
<package name="R0805">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="R0603">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
</packages>
</library>
<library name="Teensy_3_and_LC_Series_Boards_v1.4">
<packages>
<package name="TEENSY_3.0-3.2&amp;LC_DIL">
</package>
</packages>
</library>
<library name="Components">
<packages>
<package name="L_SWITCH">
</package>
<package name="1X2SCREW">
</package>
<package name="1X3SCREW">
</package>
<package name="1X4SCREW">
</package>
</packages>
</library>
<library name="linear">
<description>&lt;b&gt;Linear Devices&lt;/b&gt;&lt;p&gt;
Operational amplifiers,  comparators, voltage regulators, ADCs, DACs, etc.&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="SOT23-5">
<description>&lt;b&gt;Small Outline Transistor&lt;/b&gt;, 5 lead</description>
</package>
</packages>
</library>
<library name="BeagleBone_Black_Wireless">
<description>Generated from &lt;b&gt;BeagleBone_Black_Wireless.sch&lt;/b&gt;&lt;p&gt;
by exp-lbrs.ulp</description>
<packages>
<package name="C0805K">
<description>&lt;b&gt;Ceramic Chip Capacitor KEMET 0805 Reflow solder&lt;/b&gt;&lt;p&gt;
Metric Code Size 2012</description>
</package>
</packages>
</library>
<library name="687144149022">
<description>&lt;Wurth Elektronik WR-FPC Series 0.5mm Pitch 44 Way Horizontal SMT Female FPC Connector, ZIF Bottom Contact&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by SamacSys&lt;/author&gt;</description>
<packages>
<package name="687144149022_T2">
<description>&lt;b&gt;687144149022-2&lt;/b&gt;&lt;br&gt;
</description>
</package>
</packages>
</library>
<library name="bq2057c">
<packages>
<package name="BQ2057CDGKR">
<description>Footprint for BQ2057 Charge Controller</description>
</package>
</packages>
</library>
<library name="transistor-pnp">
<description>&lt;b&gt;PNP Transistors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="SOT223">
<description>&lt;b&gt;SOT-223&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="CHIPLED_0603">
<description>&lt;b&gt;CHIPLED&lt;/b&gt;&lt;p&gt;
Source: http://www.osram.convergy.de/ ... LG_LY Q971.pdf</description>
</package>
<package name="TT2D6">
<description>&lt;b&gt;ELECTROLYTIC CAPACITOR&lt;/b&gt;&lt;p&gt;
diameter 6 mm, grid 2.54 mm</description>
</package>
<package name="CHIPLED_0805">
<description>&lt;b&gt;CHIPLED&lt;/b&gt;&lt;p&gt;
Source: http://www.osram.convergy.de/ ... LG_R971.pdf</description>
</package>
<package name="C0603K">
<description>&lt;b&gt;Ceramic Chip Capacitor KEMET 0603 Reflow solder&lt;/b&gt;&lt;p&gt;
Metric Code Size 1608</description>
</package>
</packages>
</library>
<library name="Martone">
<packages>
<package name="SOT23">
</package>
<package name="SW_POT">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="U$1" library="Teensy356" package="TEENSY_3.5/3.6" value="TEENSY_3.5/3.6"/>
<element name="HC2" library="74HC" package="DIL16" value="">
<attribute name="VALUE"/>
</element>
<element name="HC3" library="74HC" package="DIL16" value="">
<attribute name="VALUE"/>
</element>
<element name="HC4" library="74HC" package="DIL16" value="">
<attribute name="VALUE"/>
</element>
<element name="HC5" library="74HC" package="DIL16" value="">
<attribute name="VALUE"/>
</element>
<element name="HC6" library="74HC" package="DIL16" value="">
<attribute name="VALUE"/>
</element>
<element name="C3" library="BeagleBone_Black_Wireless" package="C0805K" value="66u"/>
<element name="U$3" library="Teensy_Audioshield" package="AUDIOSHIELD" value=""/>
<element name="HC7" library="74HC" package="DIL16" value="74HC595"/>
<element name="C1" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="C4" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="C7" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="C8" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="C9" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="C10" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="U$4" library="Star" package="DRC_S-PVSON-N10-M" value="TPS61232"/>
<element name="U$5" library="Teensy_3_and_LC_Series_Boards_v1.4" package="TEENSY_3.0-3.2&amp;LC_DIL" value="TEENSY_3.1-3.2_DIL"/>
<element name="R1" library="adafruit" package="R0603" value="20k"/>
<element name="R4" library="adafruit" package="R0603" value="402k"/>
<element name="R5" library="adafruit" package="R0805" value="100k"/>
<element name="C5" library="BeagleBone_Black_Wireless" package="C0805K" value="22u"/>
<element name="C6" library="BeagleBone_Black_Wireless" package="C0805K" value="10n"/>
<element name="R6" library="adafruit" package="R0603" value="1M"/>
<element name="L1_1UH" library="Components" package="L_SWITCH" value="L_SWITCH"/>
<element name="IC1" library="linear" package="SOT23-5" value="LM321MFX">
<attribute name="POPULARITY" value="0"/>
</element>
<element name="R2" library="adafruit" package="R0603" value="112k"/>
<element name="R3" library="adafruit" package="R0603" value="88k"/>
<element name="C11" library="BeagleBone_Black_Wireless" package="C0805K" value="100n"/>
<element name="J1" library="687144149022" package="687144149022_T2" value="687144149022_T2"/>
<element name="U$10" library="ArduinoPinHeaders" package="1X6" value="1X6"/>
<element name="U$2" library="Star" package="SPAD" value="SOLDER_PAD"/>
<element name="U$7" library="Star" package="SPAD" value="SOLDER_PAD"/>
<element name="U$8" library="Star" package="SPAD" value="SOLDER_PAD"/>
<element name="U$11" library="Components" package="1X2SCREW" value="SCREWTERM"/>
<element name="R7" library="adafruit" package="R0603" value="160k"/>
<element name="R8" library="adafruit" package="R0603" value="2k"/>
<element name="R9" library="adafruit" package="R0603" value="130k"/>
<element name="R10" library="adafruit" package="R0603" value="1k"/>
<element name="BQ2057C1" library="bq2057c" package="BQ2057CDGKR" value="BQ2057CDGKR"/>
<element name="LTSTCK191KGKT" library="adafruit" package="CHIPLED_0603" value="">
<attribute name="VALUE"/>
</element>
<element name="FZT788B" library="transistor-pnp" package="SOT223" value="FZT753SMD">
<attribute name="POPULARITY" value="0"/>
</element>
<element name="R_SENSE" library="adafruit" package="R0603" value="0.5"/>
<element name="C12" library="adafruit" package="C0603K" value="0.1 uF"/>
<element name="C13" library="adafruit" package="C0603K" value="0.1 uF"/>
<element name="U$17" library="Martone" package="SOT23" value="PFET"/>
<element name="U$18" library="Martone" package="SOT23" value="PFET"/>
<element name="U$16" library="Star" package="BDLLC" value="BDLLC"/>
<element name="U$21" library="Star" package="SPAD" value="SOLDER_PAD"/>
<element name="U$22" library="Star" package="SPAD" value="SOLDER_PAD"/>
<element name="U$6" library="Star" package="BDLLC" value="BDLLC"/>
<element name="U$23" library="Star" package="SPAD" value="SOLDER_PAD"/>
<element name="U$24" library="Star" package="SPAD" value="SOLDER_PAD"/>
<element name="U$26" library="Star" package="SPAD" value="SOLDER_PAD"/>
<element name="U$9" library="Components" package="1X2SCREW" value="SCREWTERM"/>
<element name="U$27" library="Components" package="1X2SCREW" value="SCREWTERM"/>
<element name="C2" library="adafruit" package="TT2D6" value="">
<attribute name="VALUE"/>
</element>
<element name="U$28" library="Components" package="1X3SCREW" value="SCREWTERM3"/>
<element name="U$29" library="Components" package="1X3SCREW" value="SCREWTERM3"/>
<element name="U$12" library="Martone" package="SOT23" value="PFET"/>
<element name="U$13" library="Martone" package="SW_POT" value="SW_POT"/>
<element name="U$14" library="Components" package="1X4SCREW" value="SCREWTERM4"/>
<element name="U$15" library="Components" package="1X4SCREW" value="SCREWTERM4"/>
<element name="LED1" library="adafruit" package="CHIPLED_0805" value="">
<attribute name="VALUE"/>
</element>
<element name="R11" library="adafruit" package="R0603" value="">
<attribute name="VALUE"/>
</element>
<element name="LED2" library="adafruit" package="CHIPLED_0805" value="">
<attribute name="VALUE"/>
</element>
<element name="R12" library="adafruit" package="R0603" value="">
<attribute name="VALUE"/>
</element>
<element name="C14" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="C15" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="C16" library="adafruit" package="C0603K" value="">
<attribute name="VALUE"/>
</element>
<element name="U$19" library="ArduinoPinHeaders" package="1X6" value="1X6"/>
</elements>
<signals>
<signal name="3V3">
<contactref element="HC2" pad="16"/>
<contactref element="HC3" pad="16"/>
<contactref element="HC4" pad="16"/>
<contactref element="HC5" pad="16"/>
<contactref element="HC6" pad="16"/>
<contactref element="HC7" pad="16"/>
<contactref element="HC7" pad="10"/>
<contactref element="C9" pad="1"/>
<contactref element="C1" pad="1"/>
<contactref element="C4" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="C8" pad="1"/>
<contactref element="C10" pad="1"/>
<contactref element="U$5" pad="3.3V"/>
<contactref element="U$7" pad="P$1"/>
</signal>
<signal name="GND">
<contactref element="U$1" pad="AGND"/>
<contactref element="U$1" pad="GND2"/>
<contactref element="HC2" pad="8"/>
<contactref element="HC2" pad="7"/>
<contactref element="HC3" pad="8"/>
<contactref element="HC3" pad="7"/>
<contactref element="HC4" pad="8"/>
<contactref element="HC4" pad="7"/>
<contactref element="HC5" pad="8"/>
<contactref element="HC5" pad="7"/>
<contactref element="HC6" pad="8"/>
<contactref element="HC6" pad="7"/>
<contactref element="U$1" pad="GND"/>
<contactref element="U$1" pad="UGND1"/>
<contactref element="U$1" pad="UGND2"/>
<contactref element="C3" pad="2"/>
<contactref element="U$1" pad="GND3"/>
<contactref element="U$3" pad="OUTGND"/>
<contactref element="U$3" pad="G"/>
<contactref element="U$3" pad="HPGND"/>
<contactref element="HC7" pad="13"/>
<contactref element="HC7" pad="8"/>
<contactref element="HC6" pad="1"/>
<contactref element="HC6" pad="5"/>
<contactref element="HC6" pad="2"/>
<contactref element="HC6" pad="4"/>
<contactref element="C1" pad="2"/>
<contactref element="C9" pad="2"/>
<contactref element="C8" pad="2"/>
<contactref element="C7" pad="2"/>
<contactref element="C4" pad="2"/>
<contactref element="C10" pad="2"/>
<contactref element="U$4" pad="11"/>
<contactref element="U$5" pad="GND"/>
<contactref element="U$5" pad="AGND"/>
<contactref element="R1" pad="1"/>
<contactref element="R5" pad="1"/>
<contactref element="C6" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="IC1" pad="2"/>
<contactref element="R3" pad="1"/>
<contactref element="C11" pad="2"/>
<contactref element="J1" pad="MP1"/>
<contactref element="J1" pad="MP2"/>
<contactref element="U$10" pad="P$3"/>
<contactref element="U$3" pad="GND"/>
<contactref element="U$11" pad="2"/>
<contactref element="R8" pad="2"/>
<contactref element="R9" pad="1"/>
<contactref element="C12" pad="2"/>
<contactref element="BQ2057C1" pad="P4VSS"/>
<contactref element="C13" pad="2"/>
<contactref element="U$27" pad="2"/>
<contactref element="C2" pad="-"/>
<contactref element="U$29" pad="2"/>
<contactref element="U$28" pad="2"/>
<contactref element="U$13" pad="P$9"/>
<contactref element="U$13" pad="P$8"/>
<contactref element="U$13" pad="P$2"/>
<contactref element="U$14" pad="4"/>
<contactref element="U$15" pad="4"/>
<contactref element="LED1" pad="C"/>
<contactref element="LED2" pad="C"/>
<contactref element="C15" pad="2"/>
<contactref element="C14" pad="2"/>
<contactref element="C16" pad="2"/>
</signal>
<signal name="EN2">
<contactref element="HC4" pad="6"/>
<contactref element="U$5" pad="21/A7"/>
</signal>
<signal name="EN4">
<contactref element="HC6" pad="6"/>
<contactref element="U$5" pad="23/A9"/>
</signal>
<signal name="EN3">
<contactref element="HC5" pad="6"/>
<contactref element="U$5" pad="22/A8"/>
</signal>
<signal name="SEL2">
<contactref element="HC2" pad="9"/>
<contactref element="U$5" pad="5"/>
<contactref element="HC6" pad="9"/>
<contactref element="HC5" pad="9"/>
<contactref element="HC4" pad="9"/>
<contactref element="HC3" pad="9"/>
</signal>
<signal name="EN0">
<contactref element="HC2" pad="6"/>
<contactref element="U$5" pad="19/A5"/>
</signal>
<signal name="AIN">
<contactref element="HC2" pad="3"/>
<contactref element="HC3" pad="3"/>
<contactref element="HC4" pad="3"/>
<contactref element="HC5" pad="3"/>
<contactref element="HC6" pad="3"/>
<contactref element="U$5" pad="16/A2"/>
<contactref element="R1" pad="2"/>
</signal>
<signal name="EN1">
<contactref element="HC3" pad="6"/>
<contactref element="U$5" pad="20/A6"/>
</signal>
<signal name="SEL0">
<contactref element="HC2" pad="11"/>
<contactref element="U$5" pad="3"/>
<contactref element="HC6" pad="11"/>
<contactref element="HC5" pad="11"/>
<contactref element="HC4" pad="11"/>
<contactref element="HC3" pad="11"/>
</signal>
<signal name="SEL1">
<contactref element="HC2" pad="10"/>
<contactref element="U$5" pad="4"/>
<contactref element="HC6" pad="10"/>
<contactref element="HC5" pad="10"/>
<contactref element="HC4" pad="10"/>
<contactref element="HC3" pad="10"/>
</signal>
<signal name="3.6P24">
<contactref element="U$1" pad="24"/>
</signal>
<signal name="3.6P25">
<contactref element="U$1" pad="25"/>
</signal>
<signal name="3.6P26">
<contactref element="U$1" pad="26"/>
</signal>
<signal name="3.6P29">
<contactref element="U$1" pad="29"/>
</signal>
<signal name="3.6P30">
<contactref element="U$1" pad="30"/>
</signal>
<signal name="3.6P31">
<contactref element="U$1" pad="31/A12"/>
<contactref element="U$13" pad="P$5"/>
</signal>
<signal name="3.6P32">
<contactref element="U$1" pad="32/A13"/>
</signal>
<signal name="3.6P35">
<contactref element="U$1" pad="35/A16"/>
</signal>
<signal name="3.6P36">
<contactref element="U$1" pad="36/A17"/>
</signal>
<signal name="3.6P39">
<contactref element="U$1" pad="39/A20"/>
</signal>
<signal name="3.6_A21">
<contactref element="U$1" pad="21/DAC0"/>
</signal>
<signal name="3.6_A22">
<contactref element="U$1" pad="A22/DAC1"/>
</signal>
<signal name="3.6_3V3">
<contactref element="U$1" pad="3V3_LO"/>
<contactref element="U$8" pad="P$1"/>
<contactref element="U$16" pad="5"/>
<contactref element="U$16" pad="P$5"/>
<contactref element="U$16" pad="2"/>
<contactref element="U$16" pad="P$4"/>
<contactref element="U$6" pad="5"/>
<contactref element="U$6" pad="P$5"/>
<contactref element="U$6" pad="2"/>
<contactref element="U$6" pad="P$4"/>
<contactref element="U$13" pad="P$4"/>
</signal>
<signal name="VSUP">
<contactref element="U$4" pad="10"/>
<contactref element="C5" pad="1"/>
<contactref element="L1_1UH" pad="P$1"/>
<contactref element="U$4" pad="9"/>
<contactref element="U$18" pad="P$1"/>
</signal>
<signal name="VUSB">
<contactref element="R2" pad="2"/>
<contactref element="R_SENSE" pad="1"/>
<contactref element="BQ2057C1" pad="P6COMP"/>
<contactref element="BQ2057C1" pad="P1VCC"/>
<contactref element="C12" pad="1"/>
<contactref element="R7" pad="2"/>
<contactref element="U$17" pad="P$3"/>
<contactref element="U$27" pad="1"/>
<contactref element="C15" pad="1"/>
</signal>
<signal name="D-">
<contactref element="U$1" pad="UD-"/>
<contactref element="U$5" pad="D-"/>
<contactref element="U$9" pad="2"/>
</signal>
<signal name="D+">
<contactref element="U$1" pad="UD+"/>
<contactref element="U$5" pad="D+"/>
<contactref element="U$9" pad="1"/>
</signal>
<signal name="3.6P1">
<contactref element="U$3" pad="1"/>
<contactref element="U$1" pad="1/TX"/>
</signal>
<signal name="3.6P0">
<contactref element="U$3" pad="0"/>
<contactref element="U$1" pad="0/RX"/>
</signal>
<signal name="PIXDATA">
<contactref element="U$1" pad="16/A2"/>
<contactref element="U$3" pad="16"/>
</signal>
<signal name="3.6P2">
<contactref element="U$3" pad="2"/>
<contactref element="U$1" pad="2"/>
</signal>
<signal name="3.6P3">
<contactref element="U$3" pad="3"/>
<contactref element="U$1" pad="3/CANTX"/>
</signal>
<signal name="3.6P4">
<contactref element="U$3" pad="4"/>
<contactref element="U$1" pad="4/CANRX"/>
</signal>
<signal name="3.6P5">
<contactref element="U$3" pad="5"/>
<contactref element="U$1" pad="5"/>
</signal>
<signal name="3.6P6">
<contactref element="U$3" pad="6"/>
<contactref element="U$1" pad="6"/>
</signal>
<signal name="3.6P7">
<contactref element="U$3" pad="7"/>
<contactref element="U$1" pad="7"/>
</signal>
<signal name="3.6P8">
<contactref element="U$3" pad="8"/>
<contactref element="U$1" pad="8"/>
</signal>
<signal name="3.6P9">
<contactref element="U$3" pad="9"/>
<contactref element="U$1" pad="9/CS"/>
</signal>
<signal name="3.6P10">
<contactref element="U$3" pad="10"/>
<contactref element="U$1" pad="10/CS"/>
</signal>
<signal name="3.6P11">
<contactref element="U$3" pad="11"/>
<contactref element="U$1" pad="11/MOSI"/>
</signal>
<signal name="3.6P12">
<contactref element="U$3" pad="12"/>
<contactref element="U$1" pad="12/MISO"/>
</signal>
<signal name="3.6P13">
<contactref element="U$3" pad="13"/>
<contactref element="U$1" pad="13/SCK"/>
</signal>
<signal name="3.6P14">
<contactref element="U$3" pad="14"/>
<contactref element="U$1" pad="14/A0"/>
</signal>
<signal name="3.6P15">
<contactref element="U$3" pad="15"/>
<contactref element="U$1" pad="15/A1"/>
</signal>
<signal name="3.6P17">
<contactref element="U$3" pad="17"/>
<contactref element="U$1" pad="17/A3"/>
</signal>
<signal name="3.6P18">
<contactref element="U$3" pad="18"/>
<contactref element="U$1" pad="18/A4/SDA"/>
</signal>
<signal name="3.6P19">
<contactref element="U$3" pad="19"/>
<contactref element="U$1" pad="19/A5/SCL"/>
</signal>
<signal name="3.6P20">
<contactref element="U$3" pad="20"/>
<contactref element="U$1" pad="20/A6"/>
</signal>
<signal name="3.6P21">
<contactref element="U$3" pad="21"/>
<contactref element="U$1" pad="21/A7"/>
</signal>
<signal name="3.6P22">
<contactref element="U$3" pad="22"/>
<contactref element="U$1" pad="22/A8"/>
</signal>
<signal name="3.6P23">
<contactref element="U$3" pad="23"/>
<contactref element="U$1" pad="23/A9"/>
</signal>
<signal name="USB_5V">
<contactref element="U$1" pad="U5V"/>
</signal>
<signal name="USB_V">
<contactref element="U$1" pad="VUSB"/>
</signal>
<signal name="3.6_A10">
<contactref element="U$1" pad="A10"/>
</signal>
<signal name="3.6_A11">
<contactref element="U$1" pad="A11"/>
</signal>
<signal name="5V">
<contactref element="U$4" pad="3"/>
<contactref element="U$4" pad="4"/>
<contactref element="C3" pad="1"/>
<contactref element="R4" pad="2"/>
<contactref element="R6" pad="1"/>
<contactref element="IC1" pad="5"/>
<contactref element="U$5" pad="VIN"/>
<contactref element="U$1" pad="VIN"/>
<contactref element="U$2" pad="P$1"/>
<contactref element="U$17" pad="P$1"/>
<contactref element="U$16" pad="P$7"/>
<contactref element="U$16" pad="P$2"/>
<contactref element="U$6" pad="P$7"/>
<contactref element="U$6" pad="P$2"/>
<contactref element="U$26" pad="P$1"/>
<contactref element="C2" pad="+"/>
<contactref element="U$14" pad="1"/>
<contactref element="U$15" pad="1"/>
<contactref element="R11" pad="2"/>
<contactref element="C16" pad="1"/>
</signal>
<signal name="RESET">
<contactref element="U$1" pad="RESET"/>
</signal>
<signal name="3.6_3V3_3">
<contactref element="U$1" pad="3V3_2"/>
</signal>
<signal name="LLO">
<contactref element="U$3" pad="OUTL"/>
<contactref element="U$28" pad="1"/>
</signal>
<signal name="RLO">
<contactref element="U$3" pad="OUTR"/>
<contactref element="U$28" pad="3"/>
</signal>
<signal name="LHPO">
<contactref element="U$3" pad="HPL"/>
<contactref element="U$29" pad="1"/>
</signal>
<signal name="RHPO">
<contactref element="U$3" pad="HPR"/>
<contactref element="U$29" pad="3"/>
</signal>
<signal name="Z4">
<contactref element="HC7" pad="7"/>
<contactref element="J1" pad="2"/>
</signal>
<signal name="Z3">
<contactref element="HC7" pad="6"/>
<contactref element="J1" pad="4"/>
</signal>
<signal name="X4">
<contactref element="HC7" pad="3"/>
<contactref element="J1" pad="1"/>
</signal>
<signal name="X3">
<contactref element="HC7" pad="2"/>
<contactref element="J1" pad="3"/>
</signal>
<signal name="X2">
<contactref element="HC7" pad="1"/>
<contactref element="J1" pad="41"/>
</signal>
<signal name="X1">
<contactref element="HC7" pad="15"/>
<contactref element="J1" pad="43"/>
</signal>
<signal name="Z2">
<contactref element="HC7" pad="5"/>
<contactref element="J1" pad="42"/>
</signal>
<signal name="Z1">
<contactref element="HC7" pad="4"/>
<contactref element="J1" pad="44"/>
</signal>
<signal name="E0">
<contactref element="HC2" pad="13"/>
<contactref element="J1" pad="5"/>
</signal>
<signal name="E1">
<contactref element="HC2" pad="14"/>
<contactref element="J1" pad="6"/>
</signal>
<signal name="E2">
<contactref element="HC2" pad="15"/>
<contactref element="J1" pad="7"/>
</signal>
<signal name="E3">
<contactref element="HC2" pad="12"/>
<contactref element="J1" pad="8"/>
</signal>
<signal name="E4">
<contactref element="HC2" pad="1"/>
<contactref element="J1" pad="9"/>
</signal>
<signal name="E5">
<contactref element="HC2" pad="5"/>
<contactref element="J1" pad="10"/>
</signal>
<signal name="E6">
<contactref element="HC2" pad="2"/>
<contactref element="J1" pad="11"/>
</signal>
<signal name="E7">
<contactref element="HC2" pad="4"/>
<contactref element="J1" pad="12"/>
</signal>
<signal name="E9">
<contactref element="HC3" pad="14"/>
<contactref element="J1" pad="14"/>
</signal>
<signal name="E10">
<contactref element="HC3" pad="15"/>
<contactref element="J1" pad="15"/>
</signal>
<signal name="E11">
<contactref element="HC3" pad="12"/>
<contactref element="J1" pad="16"/>
</signal>
<signal name="E12">
<contactref element="HC3" pad="1"/>
<contactref element="J1" pad="17"/>
</signal>
<signal name="E13">
<contactref element="HC3" pad="5"/>
<contactref element="J1" pad="18"/>
</signal>
<signal name="E14">
<contactref element="HC3" pad="2"/>
<contactref element="J1" pad="19"/>
</signal>
<signal name="E15">
<contactref element="HC3" pad="4"/>
<contactref element="J1" pad="20"/>
</signal>
<signal name="E16">
<contactref element="HC4" pad="13"/>
<contactref element="J1" pad="21"/>
</signal>
<signal name="E17">
<contactref element="HC4" pad="14"/>
<contactref element="J1" pad="22"/>
</signal>
<signal name="E18">
<contactref element="HC4" pad="15"/>
<contactref element="J1" pad="23"/>
</signal>
<signal name="E19">
<contactref element="HC4" pad="12"/>
<contactref element="J1" pad="24"/>
</signal>
<signal name="E20">
<contactref element="HC4" pad="1"/>
<contactref element="J1" pad="25"/>
</signal>
<signal name="E21">
<contactref element="HC4" pad="5"/>
<contactref element="J1" pad="26"/>
</signal>
<signal name="E22">
<contactref element="HC4" pad="2"/>
<contactref element="J1" pad="27"/>
</signal>
<signal name="E23">
<contactref element="HC4" pad="4"/>
<contactref element="J1" pad="28"/>
</signal>
<signal name="E24">
<contactref element="HC5" pad="13"/>
<contactref element="J1" pad="29"/>
</signal>
<signal name="E25">
<contactref element="HC5" pad="14"/>
<contactref element="J1" pad="30"/>
</signal>
<signal name="E26">
<contactref element="HC5" pad="15"/>
<contactref element="J1" pad="31"/>
</signal>
<signal name="E27">
<contactref element="HC5" pad="12"/>
<contactref element="J1" pad="32"/>
</signal>
<signal name="E28">
<contactref element="HC5" pad="1"/>
<contactref element="J1" pad="33"/>
</signal>
<signal name="E29">
<contactref element="HC5" pad="5"/>
<contactref element="J1" pad="34"/>
</signal>
<signal name="E30">
<contactref element="HC5" pad="2"/>
<contactref element="J1" pad="35"/>
</signal>
<signal name="E31">
<contactref element="HC5" pad="4"/>
<contactref element="J1" pad="36"/>
</signal>
<signal name="E32">
<contactref element="HC6" pad="13"/>
<contactref element="J1" pad="37"/>
</signal>
<signal name="E33">
<contactref element="HC6" pad="14"/>
<contactref element="J1" pad="38"/>
</signal>
<signal name="E34">
<contactref element="HC6" pad="15"/>
<contactref element="J1" pad="39"/>
</signal>
<signal name="E35">
<contactref element="HC6" pad="12"/>
<contactref element="J1" pad="40"/>
</signal>
<signal name="E8">
<contactref element="HC3" pad="13"/>
<contactref element="J1" pad="13"/>
</signal>
<signal name="P7">
<contactref element="U$5" pad="7"/>
<contactref element="HC7" pad="14"/>
</signal>
<signal name="P8">
<contactref element="U$5" pad="8"/>
<contactref element="HC7" pad="11"/>
<contactref element="HC7" pad="12"/>
</signal>
<signal name="P0">
<contactref element="U$5" pad="0"/>
</signal>
<signal name="P1">
<contactref element="U$5" pad="1"/>
</signal>
<signal name="P2">
<contactref element="U$5" pad="2"/>
</signal>
<signal name="P6">
<contactref element="U$5" pad="6"/>
</signal>
<signal name="P9">
<contactref element="U$5" pad="9"/>
</signal>
<signal name="P10">
<contactref element="U$5" pad="10"/>
</signal>
<signal name="P11">
<contactref element="U$5" pad="11"/>
</signal>
<signal name="P12">
<contactref element="U$5" pad="12"/>
</signal>
<signal name="P13">
<contactref element="U$5" pad="13"/>
</signal>
<signal name="P14">
<contactref element="U$5" pad="14/A0"/>
</signal>
<signal name="P15">
<contactref element="U$5" pad="15/A1"/>
</signal>
<signal name="P17">
<contactref element="U$5" pad="17/A3"/>
</signal>
<signal name="P18">
<contactref element="U$5" pad="18/A4"/>
</signal>
<signal name="AN_REF">
<contactref element="U$1" pad="AREF"/>
</signal>
<signal name="N$6">
<contactref element="R4" pad="1"/>
<contactref element="R5" pad="2"/>
<contactref element="U$4" pad="7"/>
</signal>
<signal name="N$8">
<contactref element="U$4" pad="6"/>
<contactref element="C6" pad="1"/>
</signal>
<signal name="PG">
<contactref element="U$4" pad="5"/>
<contactref element="R6" pad="2"/>
</signal>
<signal name="SW">
<contactref element="U$4" pad="1"/>
<contactref element="U$4" pad="2"/>
<contactref element="L1_1UH" pad="P$2"/>
</signal>
<signal name="HYS">
<contactref element="U$4" pad="8"/>
</signal>
<signal name="PWR_EN">
<contactref element="IC1" pad="4"/>
<contactref element="C11" pad="1"/>
<contactref element="U$17" pad="P$2"/>
</signal>
<signal name="N$7">
<contactref element="IC1" pad="3"/>
<contactref element="R2" pad="1"/>
<contactref element="R3" pad="2"/>
</signal>
<signal name="BT_EN">
<contactref element="U$10" pad="P$1"/>
</signal>
<signal name="BT_TX">
<contactref element="U$10" pad="P$4"/>
<contactref element="U$1" pad="34/A15"/>
</signal>
<signal name="BT_RX">
<contactref element="U$10" pad="P$5"/>
<contactref element="U$1" pad="33/A14"/>
</signal>
<signal name="BT_ST">
<contactref element="U$10" pad="P$6"/>
</signal>
<signal name="3.6_3V3_2">
<contactref element="U$1" pad="3V3"/>
</signal>
<signal name="N$3">
<contactref element="U$10" pad="P$2"/>
<contactref element="U$7" pad="P$2"/>
<contactref element="U$2" pad="P$2"/>
<contactref element="R12" pad="2"/>
</signal>
<signal name="AS_3V3">
<contactref element="U$8" pad="P$2"/>
<contactref element="U$3" pad="3V"/>
</signal>
<signal name="N$2">
<contactref element="BQ2057C1" pad="P3STAT"/>
<contactref element="LTSTCK191KGKT" pad="A"/>
</signal>
<signal name="N$4">
<contactref element="LTSTCK191KGKT" pad="C"/>
<contactref element="R8" pad="1"/>
</signal>
<signal name="N$11">
<contactref element="FZT788B" pad="1"/>
<contactref element="R10" pad="1"/>
</signal>
<signal name="N$12">
<contactref element="R10" pad="2"/>
<contactref element="BQ2057C1" pad="P5CC"/>
</signal>
<signal name="N$13">
<contactref element="FZT788B" pad="3"/>
<contactref element="R_SENSE" pad="2"/>
<contactref element="BQ2057C1" pad="P7SNS"/>
</signal>
<signal name="N$14">
<contactref element="R7" pad="1"/>
<contactref element="R9" pad="2"/>
<contactref element="BQ2057C1" pad="P2TS"/>
</signal>
<signal name="SW2">
<contactref element="U$18" pad="P$2"/>
<contactref element="U$13" pad="P$1"/>
</signal>
<signal name="LED_SCK">
<contactref element="U$1" pad="27"/>
<contactref element="U$16" pad="P$6"/>
<contactref element="U$16" pad="1"/>
<contactref element="U$22" pad="P$2"/>
</signal>
<signal name="LED_MOSI">
<contactref element="U$1" pad="28"/>
<contactref element="U$16" pad="4"/>
<contactref element="U$16" pad="P$3"/>
<contactref element="U$21" pad="P$2"/>
</signal>
<signal name="HIGH_SCK">
<contactref element="U$16" pad="6"/>
<contactref element="U$16" pad="P$1"/>
<contactref element="U$22" pad="P$1"/>
<contactref element="U$14" pad="2"/>
</signal>
<signal name="HIGH_MOSI">
<contactref element="U$16" pad="3"/>
<contactref element="U$16" pad="P$8"/>
<contactref element="U$21" pad="P$1"/>
<contactref element="U$14" pad="3"/>
</signal>
<signal name="PX_SDA">
<contactref element="U$1" pad="38/A19"/>
<contactref element="U$6" pad="4"/>
<contactref element="U$6" pad="P$3"/>
<contactref element="U$23" pad="P$2"/>
</signal>
<signal name="PX_SCL">
<contactref element="U$1" pad="37/A18"/>
<contactref element="U$6" pad="P$6"/>
<contactref element="U$6" pad="1"/>
<contactref element="U$24" pad="P$2"/>
</signal>
<signal name="HIGH_SDA">
<contactref element="U$23" pad="P$1"/>
<contactref element="U$6" pad="3"/>
<contactref element="U$6" pad="P$8"/>
<contactref element="U$15" pad="3"/>
</signal>
<signal name="HIGH_SCL">
<contactref element="U$24" pad="P$1"/>
<contactref element="U$6" pad="6"/>
<contactref element="U$6" pad="P$1"/>
<contactref element="U$15" pad="2"/>
</signal>
<signal name="AS_5V">
<contactref element="U$26" pad="P$2"/>
<contactref element="U$3" pad="5V"/>
</signal>
<signal name="VCHRG">
<contactref element="BQ2057C1" pad="P8BAT"/>
<contactref element="FZT788B" pad="4"/>
<contactref element="FZT788B" pad="2"/>
<contactref element="C13" pad="1"/>
<contactref element="U$12" pad="P$3"/>
<contactref element="U$13" pad="P$7"/>
</signal>
<signal name="VBATT">
<contactref element="U$11" pad="1"/>
<contactref element="U$18" pad="P$3"/>
<contactref element="IC1" pad="1"/>
<contactref element="U$12" pad="P$1"/>
<contactref element="U$13" pad="P$3"/>
<contactref element="C14" pad="1"/>
</signal>
<signal name="N$10">
<contactref element="U$12" pad="P$2"/>
<contactref element="U$13" pad="P$6"/>
</signal>
<signal name="N$15">
<contactref element="R11" pad="1"/>
<contactref element="LED1" pad="A"/>
</signal>
<signal name="3.6_PROGR">
<contactref element="U$1" pad="PROG"/>
</signal>
<signal name="BATT_V">
<contactref element="U$1" pad="VBAT"/>
</signal>
<signal name="N$1">
<contactref element="R12" pad="1"/>
<contactref element="LED2" pad="A"/>
</signal>
<signal name="N$5">
<contactref element="U$19" pad="P$1"/>
<contactref element="U$19" pad="P$6"/>
<contactref element="U$19" pad="P$5"/>
<contactref element="U$19" pad="P$4"/>
<contactref element="U$19" pad="P$3"/>
<contactref element="U$19" pad="P$2"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
