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EESchema Schematic File Version 4
EELAYER 29 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
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F 2 "" H 5050 2500 50 0001 C CNN
F 3 "" H 5050 2500 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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$Comp
L power:GND #PWR?
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F 0 "#PWR?" H 5050 5600 50 0001 C CNN
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F 2 "" H 5050 5850 50 0001 C CNN
F 3 "" H 5050 5850 50 0001 C CNN
1 5050 5850
1 0 0 -1
$EndComp
Wire Wire Line
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$Comp
L Device:Buzzer BZ
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F 0 "BZ" H 6452 2879 50 0000 L CNN
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F 2 "" V 6275 2950 50 0001 C CNN
F 3 "~" V 6275 2950 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L power:GND #PWR?
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F 0 "#PWR?" H 7500 3550 50 0001 C CNN
F 1 "GND" H 7505 3627 50 0000 C CNN
F 2 "" H 7500 3800 50 0001 C CNN
F 3 "" H 7500 3800 50 0001 C CNN
1 7500 3800
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$EndComp
$Comp
L Device:Crystal C
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F 3 "~" H 6050 3550 50 0001 C CNN
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$EndComp
Wire Wire Line
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$Comp
L MCU_Microchip_ATmega:ATmega88PA-PU U?
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F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48PA_88PA_168PA-Data-Sheet-40002011A.pdf" H 5050 4150 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
L power:GND #PWR?
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F 0 "#PWR?" H 6200 2700 50 0001 C CNN
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F 3 "" H 6200 2950 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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$Comp
L Device:R_Small_US R1
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$EndComp
$Comp
L Device:R_Small_US R2
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1 0 0 -1
$EndComp
Wire Wire Line
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Connection ~ 6000 5000
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
L power:GND #PWR?
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F 0 "#PWR?" H 6800 4950 50 0001 C CNN
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$EndComp
$Comp
L power:+5V #PWR?
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
L Device:R_Small_US R5
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F 2 "" H 7750 4700 50 0001 C CNN
F 3 "~" H 7750 4700 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L Device:R_Small_US R3
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F 2 "" H 6850 4250 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L Device:R_Small_US R4
U 1 1 5CCA6A55
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F 0 "R4" H 7368 4296 50 0000 L CNN
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F 2 "" H 7300 4250 50 0001 C CNN
F 3 "~" H 7300 4250 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Connection ~ 7300 4400
Wire Wire Line
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Connection ~ 6850 4500
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
L power:GND #PWR?
U 1 1 5CCAF719
P 7750 4800
F 0 "#PWR?" H 7750 4550 50 0001 C CNN
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F 2 "" H 7750 4800 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
L power:GND #PWR?
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$EndComp
$Comp
L power:+5V #PWR?
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F 3 "" H 6850 3300 50 0001 C CNN
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$Comp
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1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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$Comp
L power:GND #PWR?
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F 3 "" H 6000 5250 50 0001 C CNN
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$EndComp
$Comp
L power:+5V #PWR?
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$Comp
L power:+5V #PWR?
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F 3 "" H 7300 4150 50 0001 C CNN
1 7300 4150
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$EndComp
Wire Wire Line
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Connection ~ 7650 3900
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$EndSCHEMATC