<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.6.2">
<drawing>
<library>
<description>Generated from &lt;b&gt;squareinator2.sch&lt;/b&gt;&lt;p&gt;
by exp-lbrs.ulp</description>
<packages>
<package name="ALEX-PARTS_DIL8">
<description>&lt;B&gt;Dual In Line&lt;/B&gt;&lt;p&gt;
package type P</description>
</package>
<package name="ALEX-PARTS_DIL16">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
<package name="ALEX-PARTS_DIP254P762X508-16">
</package>
<package name="ALEX-PARTS_TEENSY">
</package>
</packages>
<symbols>
<symbol name="ALEX-PARTS_CD4051BE">
<pin name="A" direction="in"/>
<pin name="B" direction="in"/>
<pin name="C" direction="in"/>
<pin name="CHANNELS_IN/OUT_0"/>
<pin name="CHANNELS_IN/OUT_1"/>
<pin name="CHANNELS_IN/OUT_2"/>
<pin name="CHANNELS_IN/OUT_3"/>
<pin name="CHANNELS_IN/OUT_4"/>
<pin name="CHANNELS_IN/OUT_5"/>
<pin name="CHANNELS_IN/OUT_6"/>
<pin name="CHANNELS_IN/OUT_7"/>
<pin name="COM_OUT/IN"/>
<pin name="INH" direction="in"/>
<pin name="VDD" direction="pwr"/>
<pin name="VEE" direction="pwr"/>
<pin name="VSS" direction="pwr"/>
</symbol>
<symbol name="ALEX-PARTS_MCP4131">
<pin name="!CS" direction="in"/>
<pin name="P0A"/>
<pin name="P0B"/>
<pin name="P0W"/>
<pin name="SCK" direction="in"/>
<pin name="SDI/SDO"/>
<pin name="VDD" direction="pwr"/>
<pin name="VSS" direction="pwr"/>
</symbol>
<symbol name="ALEX-PARTS_SN76489AN">
<description>TI SN76489AN sound generator</description>
<pin name="!CE" direction="in"/>
<pin name="!WE" direction="in"/>
<pin name="AUDIO" direction="out"/>
<pin name="CLK" direction="in"/>
<pin name="D7" direction="in"/>
<pin name="D6" direction="in"/>
<pin name="D5" direction="in"/>
<pin name="D4" direction="in"/>
<pin name="D3" direction="in"/>
<pin name="D2" direction="in"/>
<pin name="D1" direction="in"/>
<pin name="D0" direction="in"/>
<pin name="GND" direction="pwr"/>
<pin name="NC" direction="nc"/>
<pin name="READY" direction="out"/>
<pin name="VCC" direction="in"/>
</symbol>
<symbol name="ALEX-PARTS_TEENSY">
<pin name="5V"/>
<pin name="_B0"/>
<pin name="_B1"/>
<pin name="_B2"/>
<pin name="_B3"/>
<pin name="_B4"/>
<pin name="_B5"/>
<pin name="_B6"/>
<pin name="_B7"/>
<pin name="_C6"/>
<pin name="_C7"/>
<pin name="_D0"/>
<pin name="_D1"/>
<pin name="_D2"/>
<pin name="_D3"/>
<pin name="_D6"/>
<pin name="_D7"/>
<pin name="_F0"/>
<pin name="_F1"/>
<pin name="_F4"/>
<pin name="_F5"/>
<pin name="_F6"/>
<pin name="_F7"/>
<pin name="_GND"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="ALEX-PARTS_CD4051BE" prefix="U">
<description>The CD4051B is a single 8-Channel multiplexer having three binary control inputs.</description>
<gates>
<gate name="A" symbol="ALEX-PARTS_CD4051BE"/>
</gates>
<devices>
<device name="" package="ALEX-PARTS_DIP254P762X508-16">
<connects>
<connect gate="A" pin="A" pad="11"/>
<connect gate="A" pin="B" pad="10"/>
<connect gate="A" pin="C" pad="9"/>
<connect gate="A" pin="CHANNELS_IN/OUT_0" pad="13"/>
<connect gate="A" pin="CHANNELS_IN/OUT_1" pad="14"/>
<connect gate="A" pin="CHANNELS_IN/OUT_2" pad="15"/>
<connect gate="A" pin="CHANNELS_IN/OUT_3" pad="12"/>
<connect gate="A" pin="CHANNELS_IN/OUT_4" pad="1"/>
<connect gate="A" pin="CHANNELS_IN/OUT_5" pad="5"/>
<connect gate="A" pin="CHANNELS_IN/OUT_6" pad="2"/>
<connect gate="A" pin="CHANNELS_IN/OUT_7" pad="4"/>
<connect gate="A" pin="COM_OUT/IN" pad="3"/>
<connect gate="A" pin="INH" pad="6"/>
<connect gate="A" pin="VDD" pad="16"/>
<connect gate="A" pin="VEE" pad="7"/>
<connect gate="A" pin="VSS" pad="8"/>
</connects>
<technologies>
<technology name="">
<attribute name="MPN" value="CD4051BE"/>
<attribute name="OC_FARNELL" value="1106109"/>
<attribute name="OC_NEWARK" value="60K5119"/>
<attribute name="PACKAGE" value="PDIP-16"/>
<attribute name="SUPPLIER" value="Texas Instruments"/>
</technology>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="ALEX-PARTS_MCP4131">
<description>MCP4131 single SPI digital pot 128-step 100K</description>
<gates>
<gate name="G$1" symbol="ALEX-PARTS_MCP4131"/>
</gates>
<devices>
<device name="" package="ALEX-PARTS_DIL8">
<connects>
<connect gate="G$1" pin="!CS" pad="1"/>
<connect gate="G$1" pin="P0A" pad="5"/>
<connect gate="G$1" pin="P0B" pad="7"/>
<connect gate="G$1" pin="P0W" pad="6"/>
<connect gate="G$1" pin="SCK" pad="2"/>
<connect gate="G$1" pin="SDI/SDO" pad="3"/>
<connect gate="G$1" pin="VDD" pad="8"/>
<connect gate="G$1" pin="VSS" pad="4"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="ALEX-PARTS_SN76489AN" prefix="IC" uservalue="yes">
<description>TI SN76489AN Sound Generator</description>
<gates>
<gate name="G$1" symbol="ALEX-PARTS_SN76489AN"/>
</gates>
<devices>
<device name="" package="ALEX-PARTS_DIL16">
<connects>
<connect gate="G$1" pin="!CE" pad="6"/>
<connect gate="G$1" pin="!WE" pad="5"/>
<connect gate="G$1" pin="AUDIO" pad="7"/>
<connect gate="G$1" pin="CLK" pad="14"/>
<connect gate="G$1" pin="D0" pad="3"/>
<connect gate="G$1" pin="D1" pad="2"/>
<connect gate="G$1" pin="D2" pad="1"/>
<connect gate="G$1" pin="D3" pad="15"/>
<connect gate="G$1" pin="D4" pad="13"/>
<connect gate="G$1" pin="D5" pad="12"/>
<connect gate="G$1" pin="D6" pad="11"/>
<connect gate="G$1" pin="D7" pad="10"/>
<connect gate="G$1" pin="GND" pad="8"/>
<connect gate="G$1" pin="NC" pad="9"/>
<connect gate="G$1" pin="READY" pad="4"/>
<connect gate="G$1" pin="VCC" pad="16"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="ALEX-PARTS_TEENSY" prefix="_">
<description>Teensy 2.0</description>
<gates>
<gate name="G$1" symbol="ALEX-PARTS_TEENSY"/>
</gates>
<devices>
<device name="" package="ALEX-PARTS_TEENSY">
<connects>
<connect gate="G$1" pin="5V" pad="+5V"/>
<connect gate="G$1" pin="_B0" pad="B0"/>
<connect gate="G$1" pin="_B1" pad="B1"/>
<connect gate="G$1" pin="_B2" pad="B2"/>
<connect gate="G$1" pin="_B3" pad="B3"/>
<connect gate="G$1" pin="_B4" pad="B4"/>
<connect gate="G$1" pin="_B5" pad="B5"/>
<connect gate="G$1" pin="_B6" pad="B6"/>
<connect gate="G$1" pin="_B7" pad="B7"/>
<connect gate="G$1" pin="_C6" pad="C6"/>
<connect gate="G$1" pin="_C7" pad="C7"/>
<connect gate="G$1" pin="_D0" pad="D0"/>
<connect gate="G$1" pin="_D1" pad="D1"/>
<connect gate="G$1" pin="_D2" pad="D2"/>
<connect gate="G$1" pin="_D3" pad="D3"/>
<connect gate="G$1" pin="_D6" pad="D6"/>
<connect gate="G$1" pin="_D7" pad="D7"/>
<connect gate="G$1" pin="_F0" pad="F0"/>
<connect gate="G$1" pin="_F1" pad="F1"/>
<connect gate="G$1" pin="_F4" pad="F4"/>
<connect gate="G$1" pin="_F5" pad="F5"/>
<connect gate="G$1" pin="_F6" pad="F6"/>
<connect gate="G$1" pin="_F7" pad="F7"/>
<connect gate="G$1" pin="_GND" pad="GND"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="TEENSY_LESSPINS" package="ALEX-PARTS_TEENSY">
<connects>
<connect gate="G$1" pin="5V" pad="+5V"/>
<connect gate="G$1" pin="_B0" pad="B0"/>
<connect gate="G$1" pin="_B1" pad="B1"/>
<connect gate="G$1" pin="_B2" pad="B2"/>
<connect gate="G$1" pin="_B3" pad="B3"/>
<connect gate="G$1" pin="_B4" pad="B4"/>
<connect gate="G$1" pin="_B5" pad="B5"/>
<connect gate="G$1" pin="_B6" pad="B6"/>
<connect gate="G$1" pin="_B7" pad="B7"/>
<connect gate="G$1" pin="_C6" pad="C6"/>
<connect gate="G$1" pin="_C7" pad="C7"/>
<connect gate="G$1" pin="_D0" pad="D0"/>
<connect gate="G$1" pin="_D1" pad="D1"/>
<connect gate="G$1" pin="_D2" pad="D2"/>
<connect gate="G$1" pin="_D3" pad="D3"/>
<connect gate="G$1" pin="_D6" pad="D6"/>
<connect gate="G$1" pin="_D7" pad="D7"/>
<connect gate="G$1" pin="_F0" pad="F0"/>
<connect gate="G$1" pin="_F1" pad="F1"/>
<connect gate="G$1" pin="_F4" pad="F4"/>
<connect gate="G$1" pin="_F5" pad="F5"/>
<connect gate="G$1" pin="_F6" pad="F6"/>
<connect gate="G$1" pin="_F7" pad="F7"/>
<connect gate="G$1" pin="_GND" pad="GND"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</drawing>
</eagle>
