<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.5.2">
<drawing>
<schematic>
<libraries>
<library name="ATTINY3216-SN">
<packages>
<package name="SOIC127P1030X265-20N">
<description>&lt;b&gt;20-Pin SOIC300&lt;/b&gt;&lt;br&gt;
</description>
</package>
</packages>
<symbols>
<symbol name="ATTINY3216-SN">
<pin name="VDD"/>
<pin name="PA4"/>
<pin name="PA5"/>
<pin name="PA6"/>
<pin name="PA7"/>
<pin name="PB5"/>
<pin name="PB4"/>
<pin name="TOSC1/PB3"/>
<pin name="TOSC2/PB2"/>
<pin name="PB1"/>
<pin name="GND"/>
<pin name="PA3/EXTCLK"/>
<pin name="PA2"/>
<pin name="PA1"/>
<pin name="PA0/!RESET!/UPDI"/>
<pin name="PC3"/>
<pin name="PC2"/>
<pin name="PC1"/>
<pin name="PC0"/>
<pin name="PB0"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="ATTINY3216-SN" prefix="IC">
<description>&lt;b&gt;MICROCHIP - ATTINY3216-SN - 8 Bit MCU, AVR Family ATtiny3216 Series Microcontrollers, 20 MHz, 32 KB, 2 KB, 20 Pins, SOIC&lt;/b&gt;&lt;p&gt;
Source: &lt;a href="https://componentsearchengine.com/Datasheets/1/ATTINY3216-SN.pdf"&gt; Datasheet &lt;/a&gt;</description>
<gates>
<gate name="G$1" symbol="ATTINY3216-SN"/>
</gates>
<devices>
<device name="" package="SOIC127P1030X265-20N">
<connects>
<connect gate="G$1" pin="GND" pad="20"/>
<connect gate="G$1" pin="PA0/!RESET!/UPDI" pad="16"/>
<connect gate="G$1" pin="PA1" pad="17"/>
<connect gate="G$1" pin="PA2" pad="18"/>
<connect gate="G$1" pin="PA3/EXTCLK" pad="19"/>
<connect gate="G$1" pin="PA4" pad="2"/>
<connect gate="G$1" pin="PA5" pad="3"/>
<connect gate="G$1" pin="PA6" pad="4"/>
<connect gate="G$1" pin="PA7" pad="5"/>
<connect gate="G$1" pin="PB0" pad="11"/>
<connect gate="G$1" pin="PB1" pad="10"/>
<connect gate="G$1" pin="PB4" pad="7"/>
<connect gate="G$1" pin="PB5" pad="6"/>
<connect gate="G$1" pin="PC0" pad="12"/>
<connect gate="G$1" pin="PC1" pad="13"/>
<connect gate="G$1" pin="PC2" pad="14"/>
<connect gate="G$1" pin="PC3" pad="15"/>
<connect gate="G$1" pin="TOSC1/PB3" pad="8"/>
<connect gate="G$1" pin="TOSC2/PB2" pad="9"/>
<connect gate="G$1" pin="VDD" pad="1"/>
</connects>
<technologies>
<technology name="">
<attribute name="AVAILABILITY" value="Unavailable"/>
<attribute name="DESCRIPTION" value=" AVR tinyAVR™ 1 Microcontroller IC 8-Bit 20MHz 32KB _32K x 8_ FLASH 20-SOIC "/>
<attribute name="MF" value="Microchip Technology"/>
<attribute name="MP" value="ATTINY3216-SN"/>
<attribute name="PACKAGE" value="SOIC-20 Microchip Technology"/>
<attribute name="PRICE" value="None"/>
</technology>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
<library name="fablab">
<packages>
<package name="SMT_PINS_2">
</package>
<package name="MICRO_2">
</package>
<package name="SCREW_2">
</package>
<package name="SMT_PINS_8">
</package>
</packages>
<symbols>
<symbol name="SMT_PINS_2">
<pin name="2"/>
<pin name="1"/>
</symbol>
<symbol name="SMT_PINS_8">
<pin name="8"/>
<pin name="7"/>
<pin name="6"/>
<pin name="5"/>
<pin name="4"/>
<pin name="3"/>
<pin name="2"/>
<pin name="1"/>
</symbol>
<symbol name="DGND">
<pin name="GND" direction="sup"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="2_PIN_HEADER">
<description>2 SMT pin pads</description>
<gates>
<gate name="G$1" symbol="SMT_PINS_2"/>
</gates>
<devices>
<device name="HEADER" package="SMT_PINS_2">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="MICRO" package="MICRO_2">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="SCREW" package="SCREW_2">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="8_PIN_HEADER">
<gates>
<gate name="G$1" symbol="SMT_PINS_8"/>
</gates>
<devices>
<device name="HEADER" package="SMT_PINS_8">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
<connect gate="G$1" pin="3" pad="3"/>
<connect gate="G$1" pin="4" pad="4"/>
<connect gate="G$1" pin="5" pad="5"/>
<connect gate="G$1" pin="6" pad="6"/>
<connect gate="G$1" pin="7" pad="7"/>
<connect gate="G$1" pin="8" pad="8"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="GND" prefix="GND">
<description>&lt;b&gt;SUPPLY SYMBOL&lt;/b&gt;</description>
<gates>
<gate name="1" symbol="DGND"/>
</gates>
<devices>
<device name="">
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
<library name="fab">
<packages>
<package name="1X06SMD">
</package>
<package name="C1206">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;</description>
</package>
<package name="C1206FAB">
</package>
<package name="C2220">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;</description>
</package>
<package name="R1206">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;</description>
</package>
<package name="R1206W">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
wave soldering</description>
</package>
<package name="R1206FAB">
</package>
</packages>
<symbols>
<symbol name="FTDI">
<pin name="GND"/>
<pin name="CTS"/>
<pin name="VCC"/>
<pin name="TXD"/>
<pin name="RXD"/>
<pin name="RTS"/>
</symbol>
<symbol name="CAP-NONPOLARIZED">
<description>non-polarized capacitor</description>
<pin name="1" direction="pas"/>
<pin name="2" direction="pas"/>
</symbol>
<symbol name="R-US">
<pin name="2" direction="pas"/>
<pin name="1" direction="pas"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="CONN_06_FTDI-SMD-HEADER">
<gates>
<gate name="G$1" symbol="FTDI"/>
</gates>
<devices>
<device name="" package="1X06SMD">
<connects>
<connect gate="G$1" pin="CTS" pad="2"/>
<connect gate="G$1" pin="GND" pad="1"/>
<connect gate="G$1" pin="RTS" pad="6"/>
<connect gate="G$1" pin="RXD" pad="5"/>
<connect gate="G$1" pin="TXD" pad="4"/>
<connect gate="G$1" pin="VCC" pad="3"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="CAP_UNPOLARIZED" prefix="C" uservalue="yes">
<gates>
<gate name="&gt;NAME" symbol="CAP-NONPOLARIZED"/>
</gates>
<devices>
<device name="" package="C1206">
<connects>
<connect gate="&gt;NAME" pin="1" pad="1"/>
<connect gate="&gt;NAME" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="FAB" package="C1206FAB">
<connects>
<connect gate="&gt;NAME" pin="1" pad="1"/>
<connect gate="&gt;NAME" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="2220" package="C2220">
<connects>
<connect gate="&gt;NAME" pin="1" pad="1"/>
<connect gate="&gt;NAME" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="R" prefix="R" uservalue="yes">
<description>&lt;b&gt;Resistor (US Symbol)&lt;/b&gt;
&lt;p&gt;
Variants with postfix FAB are widened to allow the routing of internal traces</description>
<gates>
<gate name="G$1" symbol="R-US"/>
</gates>
<devices>
<device name="1206" package="R1206">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="1206W" package="R1206W">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="1206FAB" package="R1206FAB">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
<library name="supply1">
<description>&lt;b&gt;Supply Symbols&lt;/b&gt;&lt;p&gt;
 GND, VCC, 0V, +5V, -5V, etc.&lt;p&gt;
 Please keep in mind, that these devices are necessary for the
 automatic wiring of the supply signals.&lt;p&gt;
 The pin name defined in the symbol is identical to the net which is to be wired automatically.&lt;p&gt;
 In this library the device names are the same as the pin names of the symbols, therefore the correct signal names appear next to the supply symbols in the schematic.&lt;p&gt;
 &lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
</packages>
<symbols>
<symbol name="VCC">
<pin name="VCC" direction="sup"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="VCC" prefix="P+">
<description>&lt;b&gt;SUPPLY SYMBOL&lt;/b&gt;</description>
<gates>
<gate name="VCC" symbol="VCC"/>
</gates>
<devices>
<device name="">
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<parts>
<part name="IC1" library="ATTINY3216-SN" deviceset="ATTINY3216-SN" device=""/>
<part name="U$1" library="fablab" deviceset="2_PIN_HEADER" device="HEADER"/>
<part name="U$2" library="fab" deviceset="CONN_06_FTDI-SMD-HEADER" device=""/>
<part name="C1" library="fab" deviceset="CAP_UNPOLARIZED" device="FAB"/>
<part name="U$3" library="fablab" deviceset="8_PIN_HEADER" device="HEADER"/>
<part name="GND4" library="fablab" deviceset="GND" device=""/>
<part name="GND5" library="fablab" deviceset="GND" device=""/>
<part name="GND1" library="fablab" deviceset="GND" device=""/>
<part name="P+1" library="supply1" deviceset="VCC" device=""/>
<part name="P+2" library="supply1" deviceset="VCC" device=""/>
<part name="P+3" library="supply1" deviceset="VCC" device=""/>
<part name="GND3" library="fablab" deviceset="GND" device=""/>
<part name="R1-1M" library="fab" deviceset="R" device="1206FAB"/>
<part name="R2-1M" library="fab" deviceset="R" device="1206FAB"/>
<part name="R3-1M" library="fab" deviceset="R" device="1206FAB"/>
<part name="R4-1M" library="fab" deviceset="R" device="1206FAB"/>
<part name="R5-1M" library="fab" deviceset="R" device="1206FAB"/>
<part name="R6-1M" library="fab" deviceset="R" device="1206FAB"/>
<part name="R7-1M" library="fab" deviceset="R" device="1206FAB"/>
<part name="R8-1M" library="fab" deviceset="R" device="1206FAB"/>
</parts>
<sheets>
<sheet>
<plain>
</plain>
<busses>
</busses>
<nets>
<net name="N$1">
<segment>
<pinref part="U$1" gate="G$1" pin="1"/>
<pinref part="IC1" gate="G$1" pin="PA0/!RESET!/UPDI"/>
</segment>
</net>
<net name="GND">
<segment>
<pinref part="U$1" gate="G$1" pin="2"/>
<pinref part="GND4" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C1" gate="&gt;NAME" pin="1"/>
<pinref part="GND5" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="IC1" gate="G$1" pin="GND"/>
<pinref part="GND3" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="U$2" gate="G$1" pin="GND"/>
<pinref part="GND1" gate="1" pin="GND"/>
</segment>
</net>
<net name="N$3">
<segment>
<pinref part="U$2" gate="G$1" pin="RXD"/>
<pinref part="IC1" gate="G$1" pin="TOSC2/PB2"/>
</segment>
</net>
<net name="N$4">
<segment>
<pinref part="U$2" gate="G$1" pin="TXD"/>
<pinref part="IC1" gate="G$1" pin="TOSC1/PB3"/>
</segment>
</net>
<net name="VCC">
<segment>
<pinref part="C1" gate="&gt;NAME" pin="2"/>
<pinref part="P+1" gate="VCC" pin="VCC"/>
</segment>
<segment>
<pinref part="U$2" gate="G$1" pin="VCC"/>
<pinref part="P+2" gate="VCC" pin="VCC"/>
</segment>
<segment>
<pinref part="IC1" gate="G$1" pin="VDD"/>
<pinref part="P+3" gate="VCC" pin="VCC"/>
</segment>
</net>
<net name="N$6">
<segment>
<pinref part="R8-1M" gate="G$1" pin="1"/>
<pinref part="R7-1M" gate="G$1" pin="1"/>
<pinref part="R6-1M" gate="G$1" pin="2"/>
<pinref part="R5-1M" gate="G$1" pin="2"/>
<pinref part="R4-1M" gate="G$1" pin="1"/>
<pinref part="R3-1M" gate="G$1" pin="1"/>
<pinref part="R2-1M" gate="G$1" pin="1"/>
<pinref part="R1-1M" gate="G$1" pin="1"/>
<pinref part="IC1" gate="G$1" pin="PA2"/>
</segment>
</net>
<net name="N$8">
<segment>
<pinref part="R1-1M" gate="G$1" pin="2"/>
<pinref part="U$3" gate="G$1" pin="1"/>
<pinref part="IC1" gate="G$1" pin="PA4"/>
</segment>
</net>
<net name="N$9">
<segment>
<pinref part="R2-1M" gate="G$1" pin="2"/>
<pinref part="U$3" gate="G$1" pin="2"/>
<pinref part="IC1" gate="G$1" pin="PA5"/>
</segment>
</net>
<net name="N$10">
<segment>
<pinref part="R3-1M" gate="G$1" pin="2"/>
<pinref part="U$3" gate="G$1" pin="3"/>
<pinref part="IC1" gate="G$1" pin="PA6"/>
</segment>
</net>
<net name="N$11">
<segment>
<pinref part="R4-1M" gate="G$1" pin="2"/>
<pinref part="U$3" gate="G$1" pin="4"/>
<pinref part="IC1" gate="G$1" pin="PA7"/>
</segment>
</net>
<net name="N$12">
<segment>
<pinref part="R5-1M" gate="G$1" pin="1"/>
<pinref part="U$3" gate="G$1" pin="5"/>
<pinref part="IC1" gate="G$1" pin="PB5"/>
</segment>
</net>
<net name="N$13">
<segment>
<pinref part="R6-1M" gate="G$1" pin="1"/>
<pinref part="U$3" gate="G$1" pin="6"/>
<pinref part="IC1" gate="G$1" pin="PB4"/>
</segment>
</net>
<net name="N$14">
<segment>
<pinref part="R7-1M" gate="G$1" pin="2"/>
<pinref part="U$3" gate="G$1" pin="7"/>
<pinref part="IC1" gate="G$1" pin="PB1"/>
</segment>
</net>
<net name="N$15">
<segment>
<pinref part="U$3" gate="G$1" pin="8"/>
<pinref part="R8-1M" gate="G$1" pin="2"/>
<pinref part="IC1" gate="G$1" pin="PB0"/>
</segment>
</net>
</nets>
</sheet>
</sheets>
</schematic>
</drawing>
</eagle>
