<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.5.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="45.72" y2="0" width="0" layer="20"/>
<wire x1="45.72" y1="0" x2="45.72" y2="19.05" width="0" layer="20"/>
<wire x1="45.72" y1="19.05" x2="0" y2="19.05" width="0" layer="20"/>
<wire x1="0" y1="19.05" x2="0" y2="0" width="0" layer="20"/>
<text>A0</text>
<text>A1</text>
<text>A2</text>
<text>I2C LCD BKPK (C)</text>
<text>Q1</text>
<text>I2C LCD BKPK (C)</text>
<text>SCL</text>
<text>SDA</text>
<text>CONTRAST</text>
<text>wht.io</text>
<text>wht.io</text>
</plain>
<libraries>
<library name="0">
<packages>
<package name="1X16_LOCK">
</package>
<package name="TC33X">
</package>
<package name="SOT23-3">
</package>
<package name="HW4-SMD-2.0-90D">
</package>
<package name="0805-RES">
</package>
<package name="0805-CAP">
</package>
<package name="SJ_2S">
<description>Small solder jumper with big paste layer so it will short during reflow.</description>
</package>
<package name="0805-POL">
</package>
<package name="TSSOP16">
<description>&lt;b&gt;TSOP16&lt;/b&gt;&lt;p&gt;
thin small outline package</description>
</package>
<package name="OSHW-LOGO-S">
</package>
<package name="CREATIVE_COMMONS">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="J3" library="0" package="1X16_LOCK" value="LCD">
<attribute name="NAME"/>
</element>
<element name="R6" library="0" package="TC33X" value="10K">
<attribute name="PROD_ID" value="RES-12428"/>
<attribute name="NAME"/>
</element>
<element name="Q1" library="0" package="SOT23-3" value="MMBT2222A">
<attribute name="PROD_ID" value="TRANS-08049"/>
</element>
<element name="J1" library="0" package="HW4-SMD-2.0-90D" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="J2" library="0" package="HW4-SMD-2.0-90D" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="0" package="0805-RES" value="10K">
<attribute name="NAME"/>
</element>
<element name="R2" library="0" package="0805-RES" value="10K">
<attribute name="NAME"/>
</element>
<element name="R3" library="0" package="0805-RES" value="10K">
<attribute name="NAME"/>
</element>
<element name="R4" library="0" package="0805-RES" value="10K">
<attribute name="NAME"/>
</element>
<element name="R5" library="0" package="0805-RES" value="10K">
<attribute name="NAME"/>
</element>
<element name="C1" library="0" package="0805-CAP" value=".1u">
<attribute name="NAME"/>
</element>
<element name="SJ1" library="0" package="SJ_2S" value="SOLDERJUMPERNC"/>
<element name="SJ2" library="0" package="SJ_2S" value="SOLDERJUMPERNC"/>
<element name="SJ3" library="0" package="SJ_2S" value="SOLDERJUMPERNC"/>
<element name="C2" library="0" package="0805-POL" value="10u">
<attribute name="NAME"/>
</element>
<element name="U1" library="0" package="TSSOP16" value="PCA8574">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="R7" library="0" package="0805-RES" value="4.7k">
<attribute name="NAME"/>
</element>
<element name="R8" library="0" package="0805-RES" value="4.7k">
<attribute name="NAME"/>
</element>
<element name="SJ4" library="0" package="SJ_2S" value="SOLDERJUMPERNC"/>
<element name="SJ5" library="0" package="SJ_2S" value="SOLDERJUMPERNC"/>
<element name="LOGO1" library="0" package="OSHW-LOGO-S" value="OSHW-LOGOS"/>
<element name="U$2" library="0" package="CREATIVE_COMMONS" value="CREATIVE_COMMONS"/>
</elements>
<signals>
<signal name="GND">
<contactref element="C1" pad="2"/>
<contactref element="R6" pad="1"/>
<contactref element="Q1" pad="2"/>
<contactref element="J3" pad="1"/>
<contactref element="J1" pad="4"/>
<contactref element="J2" pad="4"/>
<contactref element="SJ1" pad="1"/>
<contactref element="SJ2" pad="1"/>
<contactref element="SJ3" pad="1"/>
<contactref element="C2" pad="-"/>
<contactref element="U1" pad="8"/>
</signal>
<signal name="VCC">
<contactref element="C1" pad="1"/>
<contactref element="R6" pad="3"/>
<contactref element="R4" pad="1"/>
<contactref element="J3" pad="2"/>
<contactref element="J3" pad="15"/>
<contactref element="J1" pad="3"/>
<contactref element="J2" pad="3"/>
<contactref element="R1" pad="1"/>
<contactref element="R2" pad="1"/>
<contactref element="R3" pad="1"/>
<contactref element="C2" pad="+"/>
<contactref element="U1" pad="16"/>
<contactref element="R7" pad="1"/>
<contactref element="R8" pad="1"/>
</signal>
<signal name="BL">
<contactref element="R4" pad="2"/>
<contactref element="R5" pad="1"/>
<contactref element="U1" pad="7"/>
</signal>
<signal name="N$4">
<contactref element="R5" pad="2"/>
<contactref element="Q1" pad="1"/>
</signal>
<signal name="N$5">
<contactref element="Q1" pad="3"/>
<contactref element="J3" pad="16"/>
</signal>
<signal name="RW">
<contactref element="J3" pad="5"/>
<contactref element="U1" pad="5"/>
</signal>
<signal name="D4">
<contactref element="J3" pad="11"/>
<contactref element="U1" pad="9"/>
</signal>
<signal name="D5">
<contactref element="J3" pad="12"/>
<contactref element="U1" pad="10"/>
</signal>
<signal name="D6">
<contactref element="J3" pad="13"/>
<contactref element="U1" pad="11"/>
</signal>
<signal name="D7">
<contactref element="J3" pad="14"/>
<contactref element="U1" pad="12"/>
</signal>
<signal name="RS">
<contactref element="J3" pad="4"/>
<contactref element="U1" pad="4"/>
</signal>
<signal name="N$8">
<contactref element="R6" pad="2"/>
<contactref element="J3" pad="3"/>
</signal>
<signal name="E">
<contactref element="J3" pad="6"/>
<contactref element="U1" pad="6"/>
</signal>
<signal name="SDA">
<contactref element="J1" pad="2"/>
<contactref element="J2" pad="2"/>
<contactref element="U1" pad="15"/>
<contactref element="SJ4" pad="1"/>
</signal>
<signal name="SCL">
<contactref element="J1" pad="1"/>
<contactref element="J2" pad="1"/>
<contactref element="U1" pad="14"/>
<contactref element="SJ5" pad="1"/>
</signal>
<signal name="A0">
<contactref element="U1" pad="1"/>
<contactref element="SJ1" pad="2"/>
<contactref element="R1" pad="2"/>
</signal>
<signal name="A1">
<contactref element="U1" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="SJ2" pad="2"/>
</signal>
<signal name="A2">
<contactref element="U1" pad="3"/>
<contactref element="R3" pad="2"/>
<contactref element="SJ3" pad="2"/>
</signal>
<signal name="N$1">
<contactref element="R7" pad="2"/>
<contactref element="SJ4" pad="2"/>
</signal>
<signal name="N$2">
<contactref element="R8" pad="2"/>
<contactref element="SJ5" pad="2"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
