<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.3.0">
<drawing>
<schematic>
<libraries>
<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="GND">
<pin name="GND" direction="sup"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="GND" prefix="GND">
<description>&lt;b&gt;SUPPLY SYMBOL&lt;/b&gt;</description>
<gates>
<gate name="1" symbol="GND"/>
</gates>
<devices>
<device name="">
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
<library name="Madre metronomo">
<description>Generated from &lt;b&gt;Madre metronomo.sch&lt;/b&gt;&lt;p&gt;
by exp-lbrs.ulp</description>
<packages>
<package name="FAB_TQFP32-08THIN">
</package>
<package name="FAB_R1206">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;</description>
</package>
<package name="FAB_R1206FAB">
</package>
<package name="FAB_R1206W">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
wave soldering</description>
</package>
<package name="FAB_2X03">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="FAB_2X03SMD">
</package>
<package name="FAB_C1206">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;</description>
</package>
<package name="FAB_C1206FAB">
</package>
<package name="WIREPAD_2,54/0,8">
<description>&lt;b&gt;THROUGH-HOLE PAD&lt;/b&gt;</description>
</package>
<package name="FAB_EFOBM">
</package>
</packages>
<symbols>
<symbol name="FAB_23-I/O">
<pin name="ADC6"/>
<pin name="ADC7"/>
<pin name="AREF" direction="pas"/>
<pin name="AVCC" direction="pwr"/>
<pin name="GND" direction="pwr"/>
<pin name="GND@1" direction="pwr"/>
<pin name="GND@2" direction="pwr"/>
<pin name="PB0(ICP)"/>
<pin name="PB1(OC1A)"/>
<pin name="PB2(SS/OC1B)"/>
<pin name="PB3(MOSI/OC2)"/>
<pin name="PB4(MISO)"/>
<pin name="PB5(SCK)"/>
<pin name="PB6(XTAL1/TOSC1)"/>
<pin name="PB7(XTAL2/TOSC2)"/>
<pin name="PC0(ADC0)"/>
<pin name="PC1(ADC1)"/>
<pin name="PC2(ADC2)"/>
<pin name="PC3(ADC3)"/>
<pin name="PC4(ADC4/SDA)"/>
<pin name="PC5(ADC5/SCL)"/>
<pin name="PC6(/RESET)" function="dot"/>
<pin name="PD0(RXD)"/>
<pin name="PD1(TXD)"/>
<pin name="PD2(INT0)"/>
<pin name="PD3(INT1)"/>
<pin name="PD4(XCK/T0)"/>
<pin name="PD5(T1)"/>
<pin name="PD6(AIN0)"/>
<pin name="PD7(AIN1)"/>
<pin name="VCC@1" direction="pwr"/>
<pin name="VCC@2" direction="pwr"/>
</symbol>
<symbol name="FAB_R-US">
<pin name="1" direction="pas"/>
<pin name="2" direction="pas"/>
</symbol>
<symbol name="FAB_AVRISP">
<pin name="GND" direction="pas" function="dot"/>
<pin name="MISO" direction="pas" function="dot"/>
<pin name="MOSI" direction="pas" function="dot"/>
<pin name="RST" direction="pas" function="dot"/>
<pin name="SCK" direction="pas" function="dot"/>
<pin name="VCC" direction="pas" function="dot"/>
</symbol>
<symbol name="FAB_CAP-NONPOLARIZED">
<description>non-polarized capacitor</description>
<pin name="1" direction="pas"/>
<pin name="2" direction="pas"/>
</symbol>
<symbol name="WIREPAD_PAD">
<pin name="P" direction="pas"/>
</symbol>
<symbol name="FAB_CERAMIC_RESONATOR">
<pin name="1" direction="pas"/>
<pin name="2" direction="pas"/>
<pin name="3" direction="pas"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="FAB_ATMEGA88-THIN" prefix="IC">
<gates>
<gate name="G$1" symbol="FAB_23-I/O"/>
</gates>
<devices>
<device name="" package="FAB_TQFP32-08THIN">
<connects>
<connect gate="G$1" pin="ADC6" pad="19"/>
<connect gate="G$1" pin="ADC7" pad="22"/>
<connect gate="G$1" pin="AREF" pad="20"/>
<connect gate="G$1" pin="AVCC" pad="18"/>
<connect gate="G$1" pin="GND" pad="21"/>
<connect gate="G$1" pin="GND@1" pad="3"/>
<connect gate="G$1" pin="GND@2" pad="5"/>
<connect gate="G$1" pin="PB0(ICP)" pad="12"/>
<connect gate="G$1" pin="PB1(OC1A)" pad="13"/>
<connect gate="G$1" pin="PB2(SS/OC1B)" pad="14"/>
<connect gate="G$1" pin="PB3(MOSI/OC2)" pad="15"/>
<connect gate="G$1" pin="PB4(MISO)" pad="16"/>
<connect gate="G$1" pin="PB5(SCK)" pad="17"/>
<connect gate="G$1" pin="PB6(XTAL1/TOSC1)" pad="7"/>
<connect gate="G$1" pin="PB7(XTAL2/TOSC2)" pad="8"/>
<connect gate="G$1" pin="PC0(ADC0)" pad="23"/>
<connect gate="G$1" pin="PC1(ADC1)" pad="24"/>
<connect gate="G$1" pin="PC2(ADC2)" pad="25"/>
<connect gate="G$1" pin="PC3(ADC3)" pad="26"/>
<connect gate="G$1" pin="PC4(ADC4/SDA)" pad="27"/>
<connect gate="G$1" pin="PC5(ADC5/SCL)" pad="28"/>
<connect gate="G$1" pin="PC6(/RESET)" pad="29"/>
<connect gate="G$1" pin="PD0(RXD)" pad="30"/>
<connect gate="G$1" pin="PD1(TXD)" pad="31"/>
<connect gate="G$1" pin="PD2(INT0)" pad="32"/>
<connect gate="G$1" pin="PD3(INT1)" pad="1"/>
<connect gate="G$1" pin="PD4(XCK/T0)" pad="2"/>
<connect gate="G$1" pin="PD5(T1)" pad="9"/>
<connect gate="G$1" pin="PD6(AIN0)" pad="10"/>
<connect gate="G$1" pin="PD7(AIN1)" pad="11"/>
<connect gate="G$1" pin="VCC@1" pad="4"/>
<connect gate="G$1" pin="VCC@2" pad="6"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="FAB_RES-US" 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="FAB_R-US"/>
</gates>
<devices>
<device name="1206" package="FAB_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="1206FAB" package="FAB_R1206FAB">
<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="FAB_R1206W">
<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="FAB_AVRISP">
<gates>
<gate name="G$1" symbol="FAB_AVRISP"/>
</gates>
<devices>
<device name="" package="FAB_2X03">
<connects>
<connect gate="G$1" pin="GND" pad="6"/>
<connect gate="G$1" pin="MISO" pad="1"/>
<connect gate="G$1" pin="MOSI" pad="4"/>
<connect gate="G$1" pin="RST" pad="5"/>
<connect gate="G$1" pin="SCK" pad="3"/>
<connect gate="G$1" pin="VCC" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="SMD" package="FAB_2X03SMD">
<connects>
<connect gate="G$1" pin="GND" pad="6"/>
<connect gate="G$1" pin="MISO" pad="1"/>
<connect gate="G$1" pin="MOSI" pad="4"/>
<connect gate="G$1" pin="RST" pad="5"/>
<connect gate="G$1" pin="SCK" pad="3"/>
<connect gate="G$1" pin="VCC" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="FAB_CAP-UNPOLARIZED" prefix="C" uservalue="yes">
<gates>
<gate name="&gt;NAME" symbol="FAB_CAP-NONPOLARIZED"/>
</gates>
<devices>
<device name="" package="FAB_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="FAB_C1206FAB">
<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="WIREPAD_2,54/0,8" prefix="PAD" uservalue="yes">
<description>&lt;b&gt;THROUGH-HOLE PAD&lt;/b&gt;</description>
<gates>
<gate name="P" symbol="WIREPAD_PAD"/>
</gates>
<devices>
<device name="" package="WIREPAD_2,54/0,8">
<connects>
<connect gate="P" pin="P" pad="1"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="FAB_RESONATOR">
<gates>
<gate name="G$1" symbol="FAB_CERAMIC_RESONATOR"/>
</gates>
<devices>
<device name="" package="FAB_EFOBM">
<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"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<parts>
<part name="GND2" library="supply1" deviceset="GND" device=""/>
<part name="GND1" library="supply1" deviceset="GND" device=""/>
<part name="IC2" library="Madre metronomo" deviceset="FAB_ATMEGA88-THIN" device=""/>
<part name="R4" library="Madre metronomo" deviceset="FAB_RES-US" device="1206FAB"/>
<part name="R1" library="Madre metronomo" deviceset="FAB_RES-US" device="1206FAB"/>
<part name="R5" library="Madre metronomo" deviceset="FAB_RES-US" device="1206FAB"/>
<part name="R6" library="Madre metronomo" deviceset="FAB_RES-US" device="1206FAB"/>
<part name="R7" library="Madre metronomo" deviceset="FAB_RES-US" device="1206FAB"/>
<part name="U$3" library="Madre metronomo" deviceset="FAB_AVRISP" device="SMD"/>
<part name="C2" library="Madre metronomo" deviceset="FAB_CAP-UNPOLARIZED" device="FAB"/>
<part name="PAD2" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="PAD10" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="PAD11" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="PAD12" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="PAD13" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="PAD14" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="PAD15" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="B1" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="B4" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="M1" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="M2" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="B3" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="PAD22" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="B2" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="PAD1" library="Madre metronomo" deviceset="WIREPAD_2,54/0,8" device=""/>
<part name="U$2" library="Madre metronomo" deviceset="FAB_RESONATOR" device=""/>
</parts>
<sheets>
<sheet>
<plain>
</plain>
<busses>
</busses>
<nets>
<net name="GND">
<segment>
<pinref part="IC2" gate="G$1" pin="GND"/>
</segment>
<segment>
<pinref part="B4" gate="P" pin="P"/>
</segment>
<segment>
<pinref part="GND2" gate="1" pin="GND"/>
<pinref part="U$2" gate="G$1" pin="2"/>
</segment>
<segment>
<pinref part="M2" gate="P" pin="P"/>
</segment>
<segment>
<pinref part="U$3" gate="G$1" pin="GND"/>
</segment>
<segment>
<pinref part="GND1" gate="1" pin="GND"/>
<pinref part="C2" gate="&gt;NAME" pin="1"/>
</segment>
<segment>
<pinref part="PAD2" gate="P" pin="P"/>
</segment>
</net>
<net name="VCC">
<segment>
<pinref part="R4" gate="G$1" pin="1"/>
</segment>
<segment>
<pinref part="IC2" gate="G$1" pin="VCC@2"/>
<pinref part="IC2" gate="G$1" pin="AVCC"/>
<pinref part="IC2" gate="G$1" pin="VCC@1"/>
<pinref part="PAD1" gate="P" pin="P"/>
</segment>
<segment>
<pinref part="U$3" gate="G$1" pin="VCC"/>
</segment>
</net>
<net name="N$2">
<segment>
<pinref part="IC2" gate="G$1" pin="PC1(ADC1)"/>
<pinref part="PAD11" gate="P" pin="P"/>
</segment>
</net>
<net name="N$6">
<segment>
<pinref part="IC2" gate="G$1" pin="PC2(ADC2)"/>
<pinref part="PAD12" gate="P" pin="P"/>
</segment>
</net>
<net name="N$35">
<segment>
<pinref part="IC2" gate="G$1" pin="PC3(ADC3)"/>
<pinref part="PAD13" gate="P" pin="P"/>
</segment>
</net>
<net name="N$7">
<segment>
<pinref part="IC2" gate="G$1" pin="PC4(ADC4/SDA)"/>
<pinref part="PAD14" gate="P" pin="P"/>
</segment>
</net>
<net name="N$14">
<segment>
<pinref part="IC2" gate="G$1" pin="PC5(ADC5/SCL)"/>
<pinref part="PAD15" gate="P" pin="P"/>
</segment>
</net>
<net name="SCK">
<segment>
<pinref part="IC2" gate="G$1" pin="PB5(SCK)"/>
<pinref part="PAD22" gate="P" pin="P"/>
</segment>
<segment>
<pinref part="U$3" gate="G$1" pin="SCK"/>
</segment>
</net>
<net name="N$5">
<segment>
<pinref part="IC2" gate="G$1" pin="PD6(AIN0)"/>
<pinref part="R6" gate="G$1" pin="1"/>
</segment>
</net>
<net name="N$28">
<segment>
<pinref part="IC2" gate="G$1" pin="ADC6"/>
<pinref part="R1" gate="G$1" pin="1"/>
</segment>
</net>
<net name="N$29">
<segment>
<pinref part="IC2" gate="G$1" pin="PC0(ADC0)"/>
<pinref part="PAD10" gate="P" pin="P"/>
</segment>
</net>
<net name="N$1">
<segment>
<pinref part="IC2" gate="G$1" pin="PB6(XTAL1/TOSC1)"/>
<pinref part="U$2" gate="G$1" pin="1"/>
</segment>
</net>
<net name="N$3">
<segment>
<pinref part="IC2" gate="G$1" pin="PB7(XTAL2/TOSC2)"/>
<pinref part="U$2" gate="G$1" pin="3"/>
</segment>
</net>
<net name="N$4">
<segment>
<pinref part="R1" gate="G$1" pin="2"/>
<pinref part="B1" gate="P" pin="P"/>
</segment>
</net>
<net name="N$8">
<segment>
<pinref part="R6" gate="G$1" pin="2"/>
<pinref part="M1" gate="P" pin="P"/>
</segment>
</net>
<net name="N$10">
<segment>
<pinref part="R5" gate="G$1" pin="2"/>
<pinref part="B2" gate="P" pin="P"/>
</segment>
</net>
<net name="N$11">
<segment>
<pinref part="IC2" gate="G$1" pin="ADC7"/>
<pinref part="R5" gate="G$1" pin="1"/>
</segment>
</net>
<net name="N$12">
<segment>
<pinref part="R7" gate="G$1" pin="2"/>
<pinref part="B3" gate="P" pin="P"/>
</segment>
</net>
<net name="N$13">
<segment>
<pinref part="IC2" gate="G$1" pin="PB1(OC1A)"/>
<pinref part="R7" gate="G$1" pin="1"/>
</segment>
</net>
<net name="RST">
<segment>
<pinref part="U$3" gate="G$1" pin="RST"/>
</segment>
<segment>
<pinref part="IC2" gate="G$1" pin="PC6(/RESET)"/>
<pinref part="R4" gate="G$1" pin="2"/>
</segment>
</net>
<net name="MISO">
<segment>
<pinref part="IC2" gate="G$1" pin="PB4(MISO)"/>
</segment>
<segment>
<pinref part="U$3" gate="G$1" pin="MISO"/>
</segment>
</net>
<net name="MOSI">
<segment>
<pinref part="IC2" gate="G$1" pin="PB3(MOSI/OC2)"/>
</segment>
<segment>
<pinref part="U$3" gate="G$1" pin="MOSI"/>
</segment>
</net>
<net name="N$9">
<segment>
<pinref part="IC2" gate="G$1" pin="AREF"/>
<pinref part="C2" gate="&gt;NAME" pin="2"/>
</segment>
</net>
</nets>
</sheet>
</sheets>
</schematic>
</drawing>
</eagle>
