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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L MCU_Microchip_ATmega:ATmega32U4-AU U1
U 1 1 6014C7C8
P 3050 3350
F 0 "U1" H 3050 1461 50  0000 C CNN
F 1 "ATmega32U4-AU" H 3050 1370 50  0000 C CNN
F 2 "Package_QFP:TQFP-44_10x10mm_P0.8mm" H 3050 3350 50  0001 C CIN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7766-8-bit-AVR-ATmega16U4-32U4_Datasheet.pdf" H 3050 3350 50  0001 C CNN
	1    3050 3350
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0101
U 1 1 601503BE
P 2950 1300
F 0 "#PWR0101" H 2950 1150 50  0001 C CNN
F 1 "+5V" H 2965 1473 50  0000 C CNN
F 2 "" H 2950 1300 50  0001 C CNN
F 3 "" H 2950 1300 50  0001 C CNN
	1    2950 1300
	1    0    0    -1  
$EndComp
Wire Wire Line
	3150 1550 3050 1550
Wire Wire Line
	2950 1550 2950 1300
Connection ~ 3050 1550
Wire Wire Line
	2950 1550 3050 1550
Connection ~ 2950 1550
$Comp
L power:GND #PWR0102
U 1 1 60151EC5
P 2600 5150
F 0 "#PWR0102" H 2600 4900 50  0001 C CNN
F 1 "GND" H 2605 4977 50  0000 C CNN
F 2 "" H 2600 5150 50  0001 C CNN
F 3 "" H 2600 5150 50  0001 C CNN
	1    2600 5150
	1    0    0    -1  
$EndComp
Wire Wire Line
	3050 5150 2950 5150
Wire Wire Line
	2950 5150 2600 5150
Connection ~ 2950 5150
$Comp
L Device:R_Small R4
U 1 1 6014D537
P 4250 3950
F 0 "R4" V 4054 3950 50  0000 C CNN
F 1 "10k" V 4145 3950 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 4250 3950 50  0001 C CNN
F 3 "~" H 4250 3950 50  0001 C CNN
	1    4250 3950
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR0103
U 1 1 6014FD6C
P 4800 3950
F 0 "#PWR0103" H 4800 3700 50  0001 C CNN
F 1 "GND" H 4805 3777 50  0000 C CNN
F 2 "" H 4800 3950 50  0001 C CNN
F 3 "" H 4800 3950 50  0001 C CNN
	1    4800 3950
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 3950 4150 3950
Wire Wire Line
	4350 3950 4800 3950
$Comp
L Device:R_Small R2
U 1 1 601523A5
P 1850 2850
F 0 "R2" V 1654 2850 50  0000 C CNN
F 1 "22" V 1745 2850 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 1850 2850 50  0001 C CNN
F 3 "~" H 1850 2850 50  0001 C CNN
	1    1850 2850
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R3
U 1 1 60153282
P 1600 2950
F 0 "R3" V 1404 2950 50  0000 C CNN
F 1 "22" V 1495 2950 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 1600 2950 50  0001 C CNN
F 3 "~" H 1600 2950 50  0001 C CNN
	1    1600 2950
	0    1    1    0   
$EndComp
Wire Wire Line
	2450 2850 1950 2850
Wire Wire Line
	2450 2950 1700 2950
Wire Wire Line
	1750 2850 1150 2850
Wire Wire Line
	1150 2950 1500 2950
$Comp
L Device:C_Small C3
U 1 1 601562B9
P 1850 3300
F 0 "C3" H 1942 3346 50  0000 L CNN
F 1 "1uF" H 1942 3255 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 1850 3300 50  0001 C CNN
F 3 "~" H 1850 3300 50  0001 C CNN
	1    1850 3300
	1    0    0    -1  
$EndComp
Wire Wire Line
	1850 3200 1850 3150
Wire Wire Line
	1850 3150 2450 3150
$Comp
L power:GND #PWR0104
U 1 1 60157BE1
P 1850 3600
F 0 "#PWR0104" H 1850 3350 50  0001 C CNN
F 1 "GND" H 1855 3427 50  0000 C CNN
F 2 "" H 1850 3600 50  0001 C CNN
F 3 "" H 1850 3600 50  0001 C CNN
	1    1850 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	1850 3400 1850 3600
$Comp
L power:+5V #PWR0105
U 1 1 60159162
P 1450 4150
F 0 "#PWR0105" H 1450 4000 50  0001 C CNN
F 1 "+5V" H 1465 4323 50  0000 C CNN
F 2 "" H 1450 4150 50  0001 C CNN
F 3 "" H 1450 4150 50  0001 C CNN
	1    1450 4150
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C4
U 1 1 6015A261
P 1000 4400
F 0 "C4" H 1092 4446 50  0000 L CNN
F 1 "0.1uF" H 1092 4355 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 1000 4400 50  0001 C CNN
F 3 "~" H 1000 4400 50  0001 C CNN
	1    1000 4400
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C5
U 1 1 6015B23B
P 1300 4400
F 0 "C5" H 1392 4446 50  0000 L CNN
F 1 "0.1uF" H 1392 4355 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 1300 4400 50  0001 C CNN
F 3 "~" H 1300 4400 50  0001 C CNN
	1    1300 4400
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C6
U 1 1 6015C31D
P 1650 4400
F 0 "C6" H 1742 4446 50  0000 L CNN
F 1 "0.1uF" H 1742 4355 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 1650 4400 50  0001 C CNN
F 3 "~" H 1650 4400 50  0001 C CNN
	1    1650 4400
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C7
U 1 1 6015CE2E
P 1950 4400
F 0 "C7" H 2042 4446 50  0000 L CNN
F 1 "0.1uF" H 2042 4355 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 1950 4400 50  0001 C CNN
F 3 "~" H 1950 4400 50  0001 C CNN
	1    1950 4400
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0106
U 1 1 6015DA77
P 1550 4750
F 0 "#PWR0106" H 1550 4500 50  0001 C CNN
F 1 "GND" H 1555 4577 50  0000 C CNN
F 2 "" H 1550 4750 50  0001 C CNN
F 3 "" H 1550 4750 50  0001 C CNN
	1    1550 4750
	1    0    0    -1  
$EndComp
Wire Wire Line
	1000 4300 1300 4300
Wire Wire Line
	1300 4300 1450 4300
Connection ~ 1300 4300
Wire Wire Line
	1650 4300 1950 4300
Wire Wire Line
	1950 4500 1650 4500
Wire Wire Line
	1300 4500 1000 4500
Connection ~ 1300 4500
Wire Wire Line
	1450 4750 1450 4500
Wire Wire Line
	1450 4500 1300 4500
Wire Wire Line
	1450 4150 1450 4300
Wire Wire Line
	1450 4300 1650 4300
Connection ~ 1450 4300
Connection ~ 1650 4300
Wire Wire Line
	1650 4500 1450 4500
Connection ~ 1650 4500
Connection ~ 1450 4500
$Comp
L power:+5V #PWR0107
U 1 1 60166A47
P 2100 2650
F 0 "#PWR0107" H 2100 2500 50  0001 C CNN
F 1 "+5V" H 2115 2823 50  0000 C CNN
F 2 "" H 2100 2650 50  0001 C CNN
F 3 "" H 2100 2650 50  0001 C CNN
	1    2100 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	2100 2650 2450 2650
$Comp
L Device:Crystal_GND24_Small Y1
U 1 1 601681ED
P 2100 2150
F 0 "Y1" V 2054 2294 50  0000 L CNN
F 1 "16MHz" V 2145 2294 50  0000 L CNN
F 2 "Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm" H 2100 2150 50  0001 C CNN
F 3 "~" H 2100 2150 50  0001 C CNN
	1    2100 2150
	0    1    1    0   
$EndComp
Wire Wire Line
	2100 2050 2450 2050
Wire Wire Line
	2100 2250 2450 2250
$Comp
L Device:C_Small C1
U 1 1 6016AB8F
P 1250 2000
F 0 "C1" V 1021 2000 50  0000 C CNN
F 1 "22pF" V 1112 2000 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 1250 2000 50  0001 C CNN
F 3 "~" H 1250 2000 50  0001 C CNN
	1    1250 2000
	0    1    1    0   
$EndComp
$Comp
L Device:C_Small C2
U 1 1 6016C0F5
P 1250 2300
F 0 "C2" V 1021 2300 50  0000 C CNN
F 1 "22pF" V 1112 2300 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 1250 2300 50  0001 C CNN
F 3 "~" H 1250 2300 50  0001 C CNN
	1    1250 2300
	0    1    1    0   
$EndComp
Wire Wire Line
	2100 2050 2100 2000
Connection ~ 2100 2050
Wire Wire Line
	1150 2000 1150 2300
Wire Wire Line
	2000 2150 2000 2350
Wire Wire Line
	2000 2350 2200 2350
Wire Wire Line
	2200 2350 2200 2150
Wire Wire Line
	1350 2300 1350 2250
Wire Wire Line
	1150 2300 1150 2400
Wire Wire Line
	2000 2400 2000 2350
Connection ~ 1150 2300
Connection ~ 2000 2350
$Comp
L power:GND #PWR0108
U 1 1 60170CB9
P 1150 2450
F 0 "#PWR0108" H 1150 2200 50  0001 C CNN
F 1 "GND" H 1155 2277 50  0000 C CNN
F 2 "" H 1150 2450 50  0001 C CNN
F 3 "" H 1150 2450 50  0001 C CNN
	1    1150 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	1150 2400 1150 2450
Connection ~ 1150 2400
$Comp
L Switch:SW_Push SW1
U 1 1 60172B01
P 2150 1850
F 0 "SW1" H 2150 2135 50  0000 C CNN
F 1 "SW_Push" H 2150 2044 50  0000 C CNN
F 2 "random-keyboard-parts:SKQG-1155865" H 2150 2050 50  0001 C CNN
F 3 "~" H 2150 2050 50  0001 C CNN
	1    2150 1850
	1    0    0    -1  
$EndComp
Wire Wire Line
	2450 1850 2400 1850
$Comp
L power:GND #PWR0109
U 1 1 60174274
P 1700 1700
F 0 "#PWR0109" H 1700 1450 50  0001 C CNN
F 1 "GND" H 1705 1527 50  0000 C CNN
F 2 "" H 1700 1700 50  0001 C CNN
F 3 "" H 1700 1700 50  0001 C CNN
	1    1700 1700
	1    0    0    -1  
$EndComp
Wire Wire Line
	1950 1850 1950 1700
Wire Wire Line
	1950 1700 1700 1700
$Comp
L power:+5V #PWR0110
U 1 1 60176792
P 2400 1350
F 0 "#PWR0110" H 2400 1200 50  0001 C CNN
F 1 "+5V" H 2415 1523 50  0000 C CNN
F 2 "" H 2400 1350 50  0001 C CNN
F 3 "" H 2400 1350 50  0001 C CNN
	1    2400 1350
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R1
U 1 1 60177433
P 2400 1550
F 0 "R1" H 2459 1596 50  0000 L CNN
F 1 "10k" H 2459 1505 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 2400 1550 50  0001 C CNN
F 3 "~" H 2400 1550 50  0001 C CNN
	1    2400 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	2400 1350 2400 1450
Wire Wire Line
	2400 1650 2400 1850
Connection ~ 2400 1850
Wire Wire Line
	2400 1850 2350 1850
Text GLabel 1150 2850 0    50   Input ~ 0
D+
Text GLabel 1150 2950 0    50   Input ~ 0
D-
Wire Wire Line
	1350 2250 2100 2250
Connection ~ 2100 2250
Wire Wire Line
	1150 2400 2000 2400
Wire Wire Line
	1350 2000 2100 2000
$Comp
L random-keyboard-parts:Molex-0548190589 USB1
U 1 1 60189396
P 5550 1750
F 0 "USB1" V 6087 1717 60  0000 C CNN
F 1 "Molex-0548190589" V 5981 1717 60  0000 C CNN
F 2 "random-keyboard-parts:Molex-0548190589" H 5550 1750 60  0001 C CNN
F 3 "" H 5550 1750 60  0001 C CNN
	1    5550 1750
	0    -1   -1   0   
$EndComp
$Comp
L power:VCC #PWR0111
U 1 1 6018DE93
P 6200 1550
F 0 "#PWR0111" H 6200 1400 50  0001 C CNN
F 1 "VCC" H 6215 1723 50  0000 C CNN
F 2 "" H 6200 1550 50  0001 C CNN
F 3 "" H 6200 1550 50  0001 C CNN
	1    6200 1550
	1    0    0    -1  
$EndComp
$Comp
L Device:Polyfuse_Small F1
U 1 1 60190145
P 6700 1550
F 0 "F1" V 6495 1550 50  0000 C CNN
F 1 "500mA" V 6586 1550 50  0000 C CNN
F 2 "Fuse:Fuse_1206_3216Metric" H 6750 1350 50  0001 L CNN
F 3 "~" H 6700 1550 50  0001 C CNN
	1    6700 1550
	0    1    1    0   
$EndComp
$Comp
L power:+5V #PWR0112
U 1 1 6019161D
P 7250 1550
F 0 "#PWR0112" H 7250 1400 50  0001 C CNN
F 1 "+5V" H 7265 1723 50  0000 C CNN
F 2 "" H 7250 1550 50  0001 C CNN
F 3 "" H 7250 1550 50  0001 C CNN
	1    7250 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	5850 1550 6200 1550
Wire Wire Line
	6200 1550 6600 1550
Connection ~ 6200 1550
Wire Wire Line
	6800 1550 7250 1550
Text GLabel 5850 1650 2    50   Input ~ 0
D-
Text GLabel 5850 1750 2    50   Input ~ 0
D+
$Comp
L power:GND #PWR0113
U 1 1 601A3241
P 5950 2050
F 0 "#PWR0113" H 5950 1800 50  0001 C CNN
F 1 "GND" H 5955 1877 50  0000 C CNN
F 2 "" H 5950 2050 50  0001 C CNN
F 3 "" H 5950 2050 50  0001 C CNN
	1    5950 2050
	1    0    0    -1  
$EndComp
Wire Wire Line
	5850 1950 5950 1950
Wire Wire Line
	5950 1950 5950 2050
$Comp
L MX_Alps_Hybrid:MX-NoLED MX1
U 1 1 601A4EB8
P 6800 2900
F 0 "MX1" H 6833 3123 60  0000 C CNN
F 1 "MX-NoLED" H 6833 3049 20  0000 C CNN
F 2 "MX_Alps_Hybrid:MX-1U-NoLED" H 6175 2875 60  0001 C CNN
F 3 "" H 6175 2875 60  0001 C CNN
	1    6800 2900
	1    0    0    -1  
$EndComp
$Comp
L Device:D_Small D1
U 1 1 601A6613
P 6650 3300
F 0 "D1" V 6696 3230 50  0000 R CNN
F 1 "SOD-123" V 6605 3230 50  0000 R CNN
F 2 "Diode_SMD:D_SOD-123" V 6650 3300 50  0001 C CNN
F 3 "~" V 6650 3300 50  0001 C CNN
	1    6650 3300
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6750 3050 6650 3050
Wire Wire Line
	6650 3050 6650 3200
$Comp
L MX_Alps_Hybrid:MX-NoLED MX2
U 1 1 601AF197
P 7500 2900
F 0 "MX2" H 7533 3123 60  0000 C CNN
F 1 "MX-NoLED" H 7533 3049 20  0000 C CNN
F 2 "MX_Alps_Hybrid:MX-1U-NoLED" H 6875 2875 60  0001 C CNN
F 3 "" H 6875 2875 60  0001 C CNN
	1    7500 2900
	1    0    0    -1  
$EndComp
$Comp
L Device:D_Small D2
U 1 1 601AF1A1
P 7350 3300
F 0 "D2" V 7396 3230 50  0000 R CNN
F 1 "SOD-123" V 7305 3230 50  0000 R CNN
F 2 "Diode_SMD:D_SOD-123" V 7350 3300 50  0001 C CNN
F 3 "~" V 7350 3300 50  0001 C CNN
	1    7350 3300
	0    -1   -1   0   
$EndComp
Wire Wire Line
	7450 3050 7350 3050
Wire Wire Line
	7350 3050 7350 3200
$Comp
L MX_Alps_Hybrid:MX-NoLED MX3
U 1 1 601B278B
P 6800 3750
F 0 "MX3" H 6833 3973 60  0000 C CNN
F 1 "MX-NoLED" H 6833 3899 20  0000 C CNN
F 2 "MX_Alps_Hybrid:MX-1U-NoLED" H 6175 3725 60  0001 C CNN
F 3 "" H 6175 3725 60  0001 C CNN
	1    6800 3750
	1    0    0    -1  
$EndComp
$Comp
L Device:D_Small D3
U 1 1 601B2795
P 6650 4150
F 0 "D3" V 6696 4080 50  0000 R CNN
F 1 "SOD-123" V 6605 4080 50  0000 R CNN
F 2 "Diode_SMD:D_SOD-123" V 6650 4150 50  0001 C CNN
F 3 "~" V 6650 4150 50  0001 C CNN
	1    6650 4150
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6750 3900 6650 3900
Wire Wire Line
	6650 3900 6650 4050
$Comp
L MX_Alps_Hybrid:MX-NoLED MX4
U 1 1 601B94B2
P 7500 3750
F 0 "MX4" H 7533 3973 60  0000 C CNN
F 1 "MX-NoLED" H 7533 3899 20  0000 C CNN
F 2 "MX_Alps_Hybrid:MX-1U-NoLED" H 6875 3725 60  0001 C CNN
F 3 "" H 6875 3725 60  0001 C CNN
	1    7500 3750
	1    0    0    -1  
$EndComp
$Comp
L Device:D_Small D4
U 1 1 601B94BC
P 7350 4150
F 0 "D4" V 7396 4080 50  0000 R CNN
F 1 "SOD-123" V 7305 4080 50  0000 R CNN
F 2 "Diode_SMD:D_SOD-123" V 7350 4150 50  0001 C CNN
F 3 "~" V 7350 4150 50  0001 C CNN
	1    7350 4150
	0    -1   -1   0   
$EndComp
Wire Wire Line
	7450 3900 7350 3900
Wire Wire Line
	7350 3900 7350 4050
Wire Wire Line
	7350 3400 6650 3400
Wire Wire Line
	7350 4250 6650 4250
Wire Wire Line
	6650 4250 6200 4250
Connection ~ 6650 4250
Wire Wire Line
	6650 3400 6200 3400
Connection ~ 6650 3400
Wire Wire Line
	6950 2600 6950 2850
Wire Wire Line
	6950 2850 6950 3700
Connection ~ 6950 2850
Wire Wire Line
	7650 3700 7650 2850
Wire Wire Line
	7650 2600 7650 2850
Connection ~ 7650 2850
Text GLabel 6950 2600 1    50   Input ~ 0
COL0
Text GLabel 7650 2600 1    50   Input ~ 0
COL1
Text GLabel 6200 3400 0    50   Input ~ 0
ROW0
Text GLabel 6200 4250 0    50   Input ~ 0
ROW1
$EndSCHEMATC