EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 1
Title "ASCII Interface for Unified Retro Keyboard"
Date "2019-08-25"
Rev "2.2"
Comp "OSIWeb.org"
Comment1 "Main Keyboard Interface"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Connector_Generic:Conn_01x16 J1
U 1 1 5BCB9E1D
P 950 5225
F 0 "J1" H 960 6035 50  0000 C CNN
F 1 "Apple 1" H 1165 5200 50  0000 C CNN
F 2 "Package_DIP:DIP-16_W7.62mm_Socket" H 950 5225 50  0001 C CNN
F 3 "~" H 950 5225 50  0001 C CNN
	1    950  5225
	-1   0    0    -1  
$EndComp
Text Label 8050 2350 0    50   ~ 0
Row4
Text Label 8050 2250 0    50   ~ 0
Row5
Text Label 8050 2150 0    50   ~ 0
Row6
Text Label 8050 2050 0    50   ~ 0
Row7
$Comp
L power:+5V #PWR04
U 1 1 5BFDC5C3
P 4110 7175
F 0 "#PWR04" H 4110 7025 50  0001 C CNN
F 1 "+5V" H 4125 7348 50  0000 C CNN
F 2 "" H 4110 7175 50  0001 C CNN
F 3 "" H 4110 7175 50  0001 C CNN
	1    4110 7175
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR05
U 1 1 5BFDC5C9
P 4110 7775
F 0 "#PWR05" H 4110 7525 50  0001 C CNN
F 1 "GND" H 4115 7602 50  0000 C CNN
F 2 "" H 4110 7775 50  0001 C CNN
F 3 "" H 4110 7775 50  0001 C CNN
	1    4110 7775
	1    0    0    -1  
$EndComp
$Comp
L Device:C C1
U 1 1 5BFE9C80
P 4360 7475
F 0 "C1" H 4365 7555 50  0000 L CNN
F 1 "0.1 uF" H 4370 7395 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 4398 7325 50  0001 C CNN
F 3 "~" H 4360 7475 50  0001 C CNN
	1    4360 7475
	1    0    0    -1  
$EndComp
Wire Wire Line
	4110 7325 4360 7325
Wire Wire Line
	4110 7175 4110 7325
Wire Wire Line
	4110 7625 4360 7625
Wire Wire Line
	4110 7625 4110 7775
Connection ~ 4360 7625
Wire Wire Line
	4360 7625 4760 7625
Text Label 8050 2450 0    50   ~ 0
Row3
Text Label 8050 2550 0    50   ~ 0
Row2
Text Label 8050 2650 0    50   ~ 0
Row1
Text Label 8050 2750 0    50   ~ 0
Row0
Text Label 8050 1250 0    50   ~ 0
Col7
Text Label 8050 1350 0    50   ~ 0
Col6
Text Label 8050 1450 0    50   ~ 0
Col5
Text Label 8050 1550 0    50   ~ 0
Col4
Text Label 8050 1650 0    50   ~ 0
Col3
Text Label 8050 1750 0    50   ~ 0
Col2
Text Label 8050 1850 0    50   ~ 0
Col1
Text Label 8050 1950 0    50   ~ 0
Col0
$Comp
L Device:R_Network08_US RN1
U 1 1 5C0319BC
P 6930 1615
F 0 "RN1" H 7310 1661 50  0000 L CNN
F 1 "4.7k" H 7310 1570 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP9" V 7405 1615 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 6930 1615 50  0001 C CNN
	1    6930 1615
	1    0    0    -1  
$EndComp
Text Label 4005 5750 0    50   ~ 0
D7
Text Label 4790 5050 0    50   ~ 0
D0
Text Label 4790 5150 0    50   ~ 0
D1
Text Label 4000 5650 0    50   ~ 0
D6
Text Label 4000 5550 0    50   ~ 0
D5
Text Label 4000 5250 0    50   ~ 0
D2
Text Label 4000 5350 0    50   ~ 0
D3
Text Label 4000 5450 0    50   ~ 0
D4
$Comp
L power:GND #PWR08
U 1 1 5D940623
P 3300 6150
F 0 "#PWR08" H 3300 5900 50  0001 C CNN
F 1 "GND" H 3305 5977 50  0000 C CNN
F 2 "" H 3300 6150 50  0001 C CNN
F 3 "" H 3300 6150 50  0001 C CNN
	1    3300 6150
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR07
U 1 1 5D9413FE
P 3300 2800
F 0 "#PWR07" H 3300 2650 50  0001 C CNN
F 1 "+5V" H 3315 2973 50  0000 C CNN
F 2 "" H 3300 2800 50  0001 C CNN
F 3 "" H 3300 2800 50  0001 C CNN
	1    3300 2800
	1    0    0    -1  
$EndComp
Wire Wire Line
	3300 2800 3300 2905
Wire Wire Line
	3400 2950 3300 2950
Connection ~ 3300 2950
$Comp
L Connector_Generic:Conn_01x16 J2
U 1 1 5D9AB54A
P 950 3225
F 0 "J2" H 950 4035 50  0000 C CNN
F 1 "Apple 2" H 1175 3180 50  0000 C CNN
F 2 "Package_DIP:DIP-16_W7.62mm_Socket" H 950 3225 50  0001 C CNN
F 3 "~" H 950 3225 50  0001 C CNN
	1    950  3225
	-1   0    0    -1  
$EndComp
$Comp
L power:+5V #PWR02
U 1 1 5D9B2C3F
P 1625 2275
F 0 "#PWR02" H 1625 2125 50  0001 C CNN
F 1 "+5V" H 1640 2448 50  0000 C CNN
F 2 "" H 1625 2275 50  0001 C CNN
F 3 "" H 1625 2275 50  0001 C CNN
	1    1625 2275
	1    0    0    -1  
$EndComp
Text Label 1250 5925 0    50   ~ 0
D7
Text Label 1250 3625 0    50   ~ 0
D0
Text Label 1250 5825 0    50   ~ 0
~STROBE
Text Label 1250 3525 0    50   ~ 0
D3
Text Label 1250 4925 0    50   ~ 0
D0
Text Label 1250 4525 0    50   ~ 0
~SYS_RESET
Text Label 1250 3425 0    50   ~ 0
D2
Text Label 1250 2625 0    50   ~ 0
~STROBE
Text Label 1250 5625 0    50   ~ 0
ClrScr
Text Label 1250 2725 0    50   ~ 0
~SYS_RESET
Text Label 1250 4625 0    50   ~ 0
D3
Text Label 1250 5225 0    50   ~ 0
D6
Text Label 1250 5125 0    50   ~ 0
D5
Text Label 1250 3025 0    50   ~ 0
D4
Text Label 1250 2925 0    50   ~ 0
D5
Text Label 1250 5025 0    50   ~ 0
D4
Text Label 1250 3725 0    50   ~ 0
D1
Text Label 1250 4825 0    50   ~ 0
D1
Text Label 1250 3125 0    50   ~ 0
D6
Text Label 1250 4725 0    50   ~ 0
D2
$Comp
L power:GND #PWR01
U 1 1 5D9B49EE
P 1600 6200
F 0 "#PWR01" H 1600 5950 50  0001 C CNN
F 1 "GND" H 1605 6027 50  0000 C CNN
F 2 "" H 1600 6200 50  0001 C CNN
F 3 "" H 1600 6200 50  0001 C CNN
	1    1600 6200
	1    0    0    -1  
$EndComp
Wire Wire Line
	1150 2625 1875 2625
Wire Wire Line
	1875 2725 1150 2725
Wire Wire Line
	1150 2925 1875 2925
Wire Wire Line
	1150 3025 1875 3025
Wire Wire Line
	1150 3125 1875 3125
Wire Wire Line
	1150 3425 1875 3425
Wire Wire Line
	1875 3525 1150 3525
Wire Wire Line
	1150 3625 1875 3625
Wire Wire Line
	1875 3725 1150 3725
Wire Wire Line
	1150 4525 1875 4525
Wire Wire Line
	1875 4625 1150 4625
Wire Wire Line
	1150 4725 1875 4725
Wire Wire Line
	1875 4825 1150 4825
Wire Wire Line
	1150 4925 1875 4925
Wire Wire Line
	1875 5025 1150 5025
Wire Wire Line
	1150 5125 1875 5125
Wire Wire Line
	1150 5225 1875 5225
Wire Wire Line
	1150 5425 1875 5425
Wire Wire Line
	1150 5525 1875 5525
Wire Wire Line
	1875 5625 1150 5625
Wire Wire Line
	1150 5725 1875 5725
Wire Wire Line
	1875 5825 1150 5825
Wire Wire Line
	1150 5925 1875 5925
Wire Wire Line
	1150 6025 1650 6025
Wire Wire Line
	1650 6025 1650 4375
$Comp
L power:+5V #PWR06
U 1 1 5D9BA9BB
P 1650 4375
F 0 "#PWR06" H 1650 4225 50  0001 C CNN
F 1 "+5V" H 1665 4548 50  0000 C CNN
F 2 "" H 1650 4375 50  0001 C CNN
F 3 "" H 1650 4375 50  0001 C CNN
	1    1650 4375
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR03
U 1 1 5D9BB5DB
P 1650 3925
F 0 "#PWR03" H 1650 3675 50  0001 C CNN
F 1 "GND" H 1655 3752 50  0000 C CNN
F 2 "" H 1650 3925 50  0001 C CNN
F 3 "" H 1650 3925 50  0001 C CNN
	1    1650 3925
	1    0    0    -1  
$EndComp
Wire Wire Line
	1150 3225 1650 3225
Wire Wire Line
	1650 3225 1650 3925
Wire Wire Line
	1150 2525 1625 2525
Wire Wire Line
	1625 2525 1625 2275
Wire Wire Line
	1150 5325 1600 5325
Wire Wire Line
	1600 5325 1600 6200
Text Label 9748 1250 0    50   ~ 0
Col0
Text Label 9750 1350 0    50   ~ 0
Row0
$Comp
L Diode:1N4148 D1
U 1 1 5D9CCE74
P 9350 1350
F 0 "D1" H 9444 1319 50  0000 C CNN
F 1 "1N4148" H 9152 1391 40  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9350 1175 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9350 1350 50  0001 C CNN
	1    9350 1350
	-1   0    0    1   
$EndComp
$Comp
L Connector_Generic:Conn_02x20_Odd_Even J4
U 1 1 5D1EDC84
P 8760 2150
F 0 "J4" H 8795 3175 50  0000 C CNN
F 1 "Keyboard" H 8800 1050 50  0000 C CNN
F 2 "unikbd:PinHeader_2x20_P2.54mm_Vertical" H 8760 2150 50  0001 C CNN
F 3 "~" H 8760 2150 50  0001 C CNN
	1    8760 2150
	1    0    0    -1  
$EndComp
Wire Wire Line
	7900 1450 8560 1450
Wire Wire Line
	7900 1350 8560 1350
Wire Wire Line
	7900 1250 8560 1250
Wire Wire Line
	7900 2650 8560 2650
Wire Wire Line
	7900 2550 8560 2550
Wire Wire Line
	7900 2450 8560 2450
Wire Wire Line
	7900 2250 8560 2250
Wire Wire Line
	7900 2150 8560 2150
Wire Wire Line
	7900 2050 8560 2050
Wire Wire Line
	7900 1950 8560 1950
Wire Wire Line
	7900 1850 8560 1850
Wire Wire Line
	7900 1650 8560 1650
Wire Wire Line
	7900 1550 8560 1550
Wire Wire Line
	7900 1750 8560 1750
$Comp
L power:GND #PWR0101
U 1 1 5D9E86E0
P 6460 6550
F 0 "#PWR0101" H 6460 6300 50  0001 C CNN
F 1 "GND" H 6320 6505 50  0000 C CNN
F 2 "" H 6460 6550 50  0001 C CNN
F 3 "" H 6460 6550 50  0001 C CNN
	1    6460 6550
	1    0    0    -1  
$EndComp
Wire Wire Line
	5860 6510 6460 6510
Wire Wire Line
	2620 3350 2620 2905
Wire Wire Line
	2620 2905 3300 2905
Connection ~ 3300 2905
Wire Wire Line
	3300 2905 3300 2950
Text Label 6800 6715 0    50   ~ 0
CAPS_LED
Wire Wire Line
	5480 6715 7700 6715
Entry Wire Line
	7700 6715 7800 6615
Text Label 9770 2050 0    50   ~ 0
Col0
Entry Wire Line
	9975 1350 10075 1450
Text Label 9770 2150 0    50   ~ 0
Row1
$Comp
L Device:C C2
U 1 1 5BFE9D13
P 4760 7475
F 0 "C2" H 4765 7555 50  0000 L CNN
F 1 "0.1 uF" H 4775 7390 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 4798 7325 50  0001 C CNN
F 3 "~" H 4760 7475 50  0001 C CNN
	1    4760 7475
	1    0    0    -1  
$EndComp
Connection ~ 4360 7325
Wire Wire Line
	4360 7325 4760 7325
Text Label 3995 4750 0    50   ~ 0
ClrScr
$Comp
L Connector_Generic:Conn_01x04 J3
U 1 1 5DA5BF6E
P 1000 1595
F 0 "J3" H 918 1170 50  0000 C CNN
F 1 "Reset/Clr" H 918 1261 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal" H 1000 1595 50  0001 C CNN
F 3 "~" H 1000 1595 50  0001 C CNN
	1    1000 1595
	-1   0    0    1   
$EndComp
Entry Wire Line
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Entry Wire Line
	1875 5825 1975 5925
Entry Wire Line
	1875 5725 1975 5825
Entry Wire Line
	1875 5625 1975 5725
Entry Wire Line
	1875 5525 1975 5625
Entry Wire Line
	1875 5425 1975 5525
Entry Wire Line
	1875 5225 1975 5325
Entry Wire Line
	1875 5125 1975 5225
Entry Wire Line
	1875 5025 1975 5125
Entry Wire Line
	1875 4925 1975 5025
Entry Wire Line
	1875 4825 1975 4925
Entry Wire Line
	1875 4725 1975 4825
Entry Wire Line
	1875 4625 1975 4725
Entry Wire Line
	1875 4525 1975 4625
Entry Wire Line
	1875 3725 1975 3825
Entry Wire Line
	1875 3625 1975 3725
Entry Wire Line
	1875 3525 1975 3625
Entry Wire Line
	1875 3425 1975 3525
Entry Wire Line
	1875 3125 1975 3225
Entry Wire Line
	1875 3025 1975 3125
Entry Wire Line
	1875 2925 1975 3025
Entry Wire Line
	1875 2725 1975 2825
Entry Wire Line
	1875 2625 1975 2725
Entry Wire Line
	1875 1395 1975 1495
Wire Wire Line
	1200 1395 1875 1395
Entry Wire Line
	1875 1595 1975 1695
Wire Wire Line
	1875 1595 1200 1595
$Comp
L power:GND #PWR0104
U 1 1 5DA63BB6
P 1500 1755
F 0 "#PWR0104" H 1500 1505 50  0001 C CNN
F 1 "GND" H 1505 1582 50  0000 C CNN
F 2 "" H 1500 1755 50  0001 C CNN
F 3 "" H 1500 1755 50  0001 C CNN
	1    1500 1755
	1    0    0    -1  
$EndComp
Wire Wire Line
	1200 1695 1500 1695
Wire Wire Line
	1500 1695 1500 1755
$Comp
L power:+5V #PWR0105
U 1 1 5DA62A28
P 1325 1305
F 0 "#PWR0105" H 1325 1155 50  0001 C CNN
F 1 "+5V" H 1340 1478 50  0000 C CNN
F 2 "" H 1325 1305 50  0001 C CNN
F 3 "" H 1325 1305 50  0001 C CNN
	1    1325 1305
	1    0    0    -1  
$EndComp
Wire Wire Line
	1325 1495 1325 1305
Wire Wire Line
	1200 1495 1325 1495
Text Label 1410 1595 0    50   ~ 0
~SYS_RESET
Text Label 1415 1395 0    50   ~ 0
ClrScr
Wire Wire Line
	3900 3650 4555 3650
Wire Wire Line
	3300 2950 3300 3050
Wire Wire Line
	3400 3050 3400 2950
Wire Wire Line
	3300 6050 3300 6150
Wire Wire Line
	3900 5750 5100 5750
Wire Wire Line
	5100 5650 3900 5650
Wire Wire Line
	3900 5550 5100 5550
Wire Wire Line
	5100 5450 3900 5450
Wire Wire Line
	3900 5350 5100 5350
Wire Wire Line
	5100 5250 3900 5250
Wire Wire Line
	3900 4750 5100 4750
Wire Wire Line
	2700 3350 2620 3350
Wire Wire Line
	4555 1655 4555 3650
Wire Wire Line
	3900 3850 4335 3850
Wire Wire Line
	4190 1355 4190 3750
Wire Wire Line
	3900 3750 4190 3750
Wire Wire Line
	4335 3850 4335 1555
Wire Wire Line
	4715 4850 3900 4850
Wire Wire Line
	4715 1755 4715 4850
$Comp
L power:+5V #PWR0106
U 1 1 5DA61D1D
P 3415 1270
F 0 "#PWR0106" H 3415 1120 50  0001 C CNN
F 1 "+5V" H 3430 1443 50  0000 C CNN
F 2 "" H 3415 1270 50  0001 C CNN
F 3 "" H 3415 1270 50  0001 C CNN
	1    3415 1270
	1    0    0    -1  
$EndComp
Wire Wire Line
	6460 6550 6460 6510
Connection ~ 6460 6510
Wire Wire Line
	6460 6510 6460 6370
Wire Wire Line
	5480 4650 5480 6715
Wire Wire Line
	3900 4650 5480 4650
Wire Bus Line
	5200 6425 1975 6425
Entry Wire Line
	5100 4750 5200 4850
Entry Wire Line
	5100 5750 5200 5850
Entry Wire Line
	5100 5650 5200 5750
Entry Wire Line
	5100 5550 5200 5650
Entry Wire Line
	5100 5450 5200 5550
Entry Wire Line
	5100 5350 5200 5450
Entry Wire Line
	5100 5250 5200 5350
Entry Wire Line
	5100 5150 5200 5250
Entry Wire Line
	5100 5050 5200 5150
Wire Wire Line
	3000 1355 4190 1355
Wire Wire Line
	3000 1455 3415 1455
Wire Wire Line
	3415 1455 3415 1270
Wire Wire Line
	3000 1555 4335 1555
Wire Wire Line
	3000 1655 4555 1655
Wire Wire Line
	3000 1755 4715 1755
$Comp
L power:GND #PWR0107
U 1 1 5DA62401
P 3330 2050
F 0 "#PWR0107" H 3330 1800 50  0001 C CNN
F 1 "GND" H 3250 1915 50  0000 C CNN
F 2 "" H 3330 2050 50  0001 C CNN
F 3 "" H 3330 2050 50  0001 C CNN
	1    3330 2050
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x06 J5
U 1 1 5DA566B2
P 2800 1555
F 0 "J5" H 2880 1547 50  0000 L CNN
F 1 "ISP header" H 2880 1456 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Horizontal" H 2800 1555 50  0001 C CNN
F 3 "~" H 2800 1555 50  0001 C CNN
	1    2800 1555
	-1   0    0    -1  
$EndComp
Wire Wire Line
	3330 1855 3000 1855
Wire Wire Line
	3330 2050 3330 1855
$Comp
L power:+5V #PWR013
U 1 1 5C031A36
P 6530 1160
F 0 "#PWR013" H 6530 1010 50  0001 C CNN
F 1 "+5V" H 6545 1333 50  0000 C CNN
F 2 "" H 6530 1160 50  0001 C CNN
F 3 "" H 6530 1160 50  0001 C CNN
	1    6530 1160
	1    0    0    -1  
$EndComp
Wire Wire Line
	6530 1160 6530 1415
Wire Wire Line
	3900 3450 4935 3450
Wire Wire Line
	3900 3550 5030 3550
$Comp
L power:GND #PWR010
U 1 1 5DD5DF24
P 5655 3755
F 0 "#PWR010" H 5655 3505 50  0001 C CNN
F 1 "GND" H 5575 3620 50  0000 C CNN
F 2 "" H 5655 3755 50  0001 C CNN
F 3 "" H 5655 3755 50  0001 C CNN
	1    5655 3755
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR09
U 1 1 5DD5EF16
P 5655 1450
F 0 "#PWR09" H 5655 1300 50  0001 C CNN
F 1 "+5V" H 5670 1623 50  0000 C CNN
F 2 "" H 5655 1450 50  0001 C CNN
F 3 "" H 5655 1450 50  0001 C CNN
	1    5655 1450
	1    0    0    -1  
$EndComp
Connection ~ 5655 1575
Wire Wire Line
	5655 1575 5655 1450
$Comp
L interface-ascii:74LS166 U3
U 1 1 5DD565C9
P 5655 2610
F 0 "U3" H 5400 3470 50  0000 C CNN
F 1 "74LS166" H 5845 3465 50  0000 C CNN
F 2 "Package_DIP:DIP-16_W7.62mm" H 5655 2610 50  0001 C CNN
F 3 "" H 5655 2610 50  0001 C CNN
	1    5655 2610
	1    0    0    -1  
$EndComp
Wire Wire Line
	5655 1610 5655 1575
Wire Wire Line
	5655 3610 5655 3640
Wire Wire Line
	3900 3350 4845 3350
Wire Wire Line
	4845 3350 4845 2410
Wire Wire Line
	4845 2410 5155 2410
Wire Wire Line
	4935 2560 5155 2560
Wire Wire Line
	4935 2560 4935 3450
Wire Wire Line
	5030 2710 5155 2710
Wire Wire Line
	5030 2710 5030 3550
Wire Wire Line
	5155 3110 5155 3640
Wire Wire Line
	5155 3640 5655 3640
Connection ~ 5655 3640
Wire Wire Line
	5655 3640 5655 3755
Wire Wire Line
	5155 1910 5055 1910
Wire Wire Line
	5055 1910 5055 1575
Wire Wire Line
	5155 2010 5055 2010
Wire Wire Line
	5055 2010 5055 1915
Wire Wire Line
	5055 1575 5655 1575
Entry Wire Line
	5100 4050 5200 4150
Entry Wire Line
	5100 3950 5200 4050
Wire Wire Line
	3900 3950 5100 3950
Wire Wire Line
	5100 4050 3900 4050
Text Label 4010 3950 0    50   ~ 0
~STROBE
Text Label 4005 4050 0    50   ~ 0
~SYS_RESET
$Comp
L Device:C C3
U 1 1 5DD6A5C6
P 5180 7475
F 0 "C3" H 5185 7555 50  0000 L CNN
F 1 "0.1 uF" H 5195 7390 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 5218 7325 50  0001 C CNN
F 3 "~" H 5180 7475 50  0001 C CNN
	1    5180 7475
	1    0    0    -1  
$EndComp
Wire Wire Line
	4760 7325 5180 7325
Connection ~ 4760 7325
Wire Wire Line
	5180 7625 4760 7625
Connection ~ 4760 7625
Entry Wire Line
	7800 5670 7700 5770
Entry Wire Line
	7800 5370 7700 5470
Entry Wire Line
	7800 5870 7700 5970
Entry Wire Line
	7800 5470 7700 5570
Entry Wire Line
	7800 5770 7700 5870
Entry Wire Line
	7800 5270 7700 5370
Entry Wire Line
	7800 5570 7700 5670
Entry Wire Line
	7800 5970 7700 6070
Text Label 7610 5770 2    50   ~ 0
Row12
Text Label 7610 5870 2    50   ~ 0
Row13
Text Label 7610 5970 2    50   ~ 0
Row14
Text Label 7610 6070 2    50   ~ 0
Row15
Text Label 7610 5670 2    50   ~ 0
Row11
Text Label 7615 5570 2    50   ~ 0
Row10
Text Label 7570 5470 2    50   ~ 0
Row9
Text Label 7570 5370 2    50   ~ 0
Row8
$Comp
L interface-ascii:ATmega328P-PU-MCU_Microchip_ATmega U1
U 1 1 5DD17F64
P 3300 4550
F 0 "U1" H 2980 6025 50  0000 R CNN
F 1 "ATmega328P" H 3975 3055 50  0000 R CNN
F 2 "Package_DIP:DIP-28_W7.62mm" H 3300 4550 50  0001 C CIN
F 3 "" H 3300 4550 50  0001 C CNN
	1    3300 4550
	1    0    0    -1  
$EndComp
Text Label 9165 2850 0    50   ~ 0
Row8
Text Label 9165 2950 0    50   ~ 0
Row9
Text Label 9165 3050 0    50   ~ 0
Row10
Entry Wire Line
	9975 2050 10075 2150
Entry Wire Line
	9975 3150 10075 3250
Entry Wire Line
	9975 1650 10075 1750
Entry Wire Line
	9975 2850 10075 2950
Entry Wire Line
	9975 2950 10075 3050
Entry Wire Line
	9975 3050 10075 3150
Wire Wire Line
	7900 2750 8560 2750
Text Label 9165 3150 0    50   ~ 0
Row11
Text Label 8050 3150 0    50   ~ 0
Row12
Text Label 8050 2950 0    50   ~ 0
Row14
Text Label 8050 3050 0    50   ~ 0
Row13
Text Label 8050 2850 0    50   ~ 0
Row15
Text Label 3115 1355 0    50   ~ 0
MISO
Text Label 3120 1555 0    50   ~ 0
SCK
Text Label 3120 1655 0    50   ~ 0
MOSI
Text Label 3120 1755 0    50   ~ 0
~RESET
Wire Wire Line
	4760 5150 5100 5150
Wire Wire Line
	5100 5050 4760 5050
Wire Wire Line
	4460 5050 4210 5050
Wire Wire Line
	3900 5150 4310 5150
$Comp
L Device:R_US R1
U 1 1 5DD9ECD2
P 4610 5050
F 0 "R1" V 4570 4850 50  0000 C CNN
F 1 "220" V 4520 5050 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4650 5040 50  0001 C CNN
F 3 "~" H 4610 5050 50  0001 C CNN
	1    4610 5050
	0    1    1    0   
$EndComp
$Comp
L Device:R_US R2
U 1 1 5DDA0995
P 4610 5150
F 0 "R2" V 4570 4950 50  0000 C CNN
F 1 "R_US" V 4496 5150 50  0001 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4650 5140 50  0001 C CNN
F 3 "~" H 4610 5150 50  0001 C CNN
	1    4610 5150
	0    1    1    0   
$EndComp
Wire Wire Line
	4210 5050 4210 6800
Wire Wire Line
	4210 6800 1150 6800
Connection ~ 4210 5050
Wire Wire Line
	4210 5050 3900 5050
Wire Wire Line
	4310 5150 4310 6900
Wire Wire Line
	4310 6900 1150 6900
Connection ~ 4310 5150
Wire Wire Line
	4310 5150 4460 5150
$Comp
L power:GND #PWR0108
U 1 1 5DDAEC22
P 1200 7200
F 0 "#PWR0108" H 1200 6950 50  0001 C CNN
F 1 "GND" H 1205 7027 50  0000 C CNN
F 2 "" H 1200 7200 50  0001 C CNN
F 3 "" H 1200 7200 50  0001 C CNN
	1    1200 7200
	1    0    0    -1  
$EndComp
Wire Wire Line
	1200 7200 1200 7000
Wire Wire Line
	1200 7000 1150 7000
Text Label 1230 6800 0    50   ~ 0
Rx
Text Label 1240 6900 0    50   ~ 0
Tx
Wire Wire Line
	5860 6070 5860 6510
Text Label 7550 3480 2    50   ~ 0
Col7
Text Label 7550 2780 2    50   ~ 0
Col0
Text Label 7550 2880 2    50   ~ 0
Col1
Text Label 7550 2980 2    50   ~ 0
Col2
Text Label 7550 3080 2    50   ~ 0
Col3
Text Label 7550 3180 2    50   ~ 0
Col4
Text Label 7550 3280 2    50   ~ 0
Col5
Text Label 7550 3380 2    50   ~ 0
Col6
Entry Wire Line
	7800 3280 7700 3380
Entry Wire Line
	7800 3180 7700 3280
Entry Wire Line
	7800 3080 7700 3180
Entry Wire Line
	7800 2980 7700 3080
Entry Wire Line
	7800 2880 7700 2980
Entry Wire Line
	7800 2780 7700 2880
Entry Wire Line
	7800 2680 7700 2780
Entry Wire Line
	7800 3380 7700 3480
Entry Wire Line
	7800 1450 7900 1350
Entry Wire Line
	7800 1550 7900 1450
Entry Wire Line
	7800 1650 7900 1550
Entry Wire Line
	7800 1750 7900 1650
Entry Wire Line
	7800 1850 7900 1750
Entry Wire Line
	7800 1950 7900 1850
Entry Wire Line
	7800 2050 7900 1950
Entry Wire Line
	7800 2550 7900 2450
Entry Wire Line
	7800 2650 7900 2550
Entry Wire Line
	7800 2750 7900 2650
Entry Wire Line
	7800 1350 7900 1250
Entry Wire Line
	7800 2150 7900 2050
Entry Wire Line
	7800 2250 7900 2150
Entry Wire Line
	7800 2350 7900 2250
Entry Wire Line
	7800 2450 7900 2350
Entry Wire Line
	7800 2850 7900 2750
Connection ~ 7800 4085
Wire Wire Line
	6930 3180 7700 3180
Wire Wire Line
	7230 3480 7700 3480
Wire Wire Line
	7130 3380 7700 3380
Wire Wire Line
	7030 3280 7700 3280
Wire Wire Line
	6830 3080 7700 3080
Wire Wire Line
	6730 2980 7700 2980
Wire Wire Line
	6630 2880 7700 2880
Wire Wire Line
	6530 2780 7700 2780
Wire Bus Line
	7800 4085 10075 4085
$Comp
L power:+5V #PWR0103
U 1 1 5DA541F3
P 6450 3395
F 0 "#PWR0103" H 6450 3245 50  0001 C CNN
F 1 "+5V" H 6540 3450 50  0000 C CNN
F 2 "" H 6450 3395 50  0001 C CNN
F 3 "" H 6450 3395 50  0001 C CNN
	1    6450 3395
	1    0    0    -1  
$EndComp
Text Label 7570 3830 2    50   ~ 0
Row0
Text Label 7570 3930 2    50   ~ 0
Row1
Text Label 7570 4030 2    50   ~ 0
Row2
Text Label 7570 4130 2    50   ~ 0
Row3
Text Label 7570 4530 2    50   ~ 0
Row7
Text Label 7570 4430 2    50   ~ 0
Row6
Text Label 7570 4330 2    50   ~ 0
Row5
Text Label 7570 4230 2    50   ~ 0
Row4
$Comp
L 74xx:74LS138 U2
U 1 1 5DE612EE
P 6450 4130
F 0 "U2" H 6210 4575 50  0000 C CNN
F 1 "74LS138" H 6655 4580 50  0000 C CNN
F 2 "Package_DIP:DIP-16_W7.62mm" H 6450 4130 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS138" H 6450 4130 50  0001 C CNN
	1    6450 4130
	1    0    0    -1  
$EndComp
Entry Wire Line
	7800 4130 7700 4230
Entry Wire Line
	7800 3830 7700 3930
Entry Wire Line
	7800 4330 7700 4430
Entry Wire Line
	7800 3930 7700 4030
Entry Wire Line
	7800 4230 7700 4330
Entry Wire Line
	7800 3730 7700 3830
Entry Wire Line
	7800 4030 7700 4130
Entry Wire Line
	7800 4430 7700 4530
$Comp
L 74xx:74LS138 U4
U 1 1 5DE7C3DB
P 6460 5670
F 0 "U4" H 6220 6115 50  0000 C CNN
F 1 "74LS138" H 6665 6120 50  0000 C CNN
F 2 "Package_DIP:DIP-16_W7.62mm" H 6460 5670 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS138" H 6460 5670 50  0001 C CNN
	1    6460 5670
	1    0    0    -1  
$EndComp
Wire Wire Line
	3900 4250 5735 4250
Wire Wire Line
	5735 4250 5735 3830
Wire Wire Line
	5735 3830 5950 3830
Wire Wire Line
	5950 3930 5785 3930
Wire Wire Line
	5785 3930 5785 4350
Wire Wire Line
	5785 4350 3900 4350
Wire Wire Line
	5950 4030 5840 4030
Wire Wire Line
	5840 4030 5840 4450
Wire Wire Line
	5840 4450 3900 4450
Wire Wire Line
	3900 4550 5885 4550
$Comp
L power:GND #PWR0109
U 1 1 5DE8F508
P 6445 4845
F 0 "#PWR0109" H 6445 4595 50  0001 C CNN
F 1 "GND" H 6305 4800 50  0000 C CNN
F 2 "" H 6445 4845 50  0001 C CNN
F 3 "" H 6445 4845 50  0001 C CNN
	1    6445 4845
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0110
U 1 1 5DE8FEDD
P 6460 5070
F 0 "#PWR0110" H 6460 4920 50  0001 C CNN
F 1 "+5V" H 6550 5125 50  0000 C CNN
F 2 "" H 6460 5070 50  0001 C CNN
F 3 "" H 6460 5070 50  0001 C CNN
	1    6460 5070
	1    0    0    -1  
$EndComp
Wire Wire Line
	6445 4845 6450 4845
Wire Wire Line
	6450 4845 6450 4830
Connection ~ 5840 4450
Wire Wire Line
	5785 5470 5785 4355
Connection ~ 5735 4250
Wire Wire Line
	5860 6070 5960 6070
Wire Wire Line
	5860 6070 5860 5970
Wire Wire Line
	5860 5970 5960 5970
Connection ~ 5860 6070
Wire Wire Line
	5885 4430 5885 4550
Wire Wire Line
	5885 5870 5960 5870
Connection ~ 5885 4550
Wire Wire Line
	5885 4550 5885 5870
Wire Wire Line
	5885 4430 5950 4430
Wire Wire Line
	5950 4530 5950 4845
Wire Wire Line
	5950 4845 6445 4845
Connection ~ 6445 4845
Wire Wire Line
	5950 4330 5915 4330
Wire Wire Line
	5915 4330 5915 3475
Wire Wire Line
	5915 3475 6450 3475
Wire Wire Line
	6450 3475 6450 3395
Wire Wire Line
	6450 3475 6450 3530
Connection ~ 6450 3475
Wire Wire Line
	5840 5570 5960 5570
Wire Wire Line
	5840 4450 5840 5570
Wire Wire Line
	5785 5470 5960 5470
Wire Wire Line
	5960 5370 5735 5370
Wire Wire Line
	5735 4250 5735 5370
Wire Wire Line
	7230 1815 7230 2010
Wire Wire Line
	6730 1815 6730 2510
Wire Wire Line
	6730 2510 6730 2980
Connection ~ 6730 2510
Wire Wire Line
	6155 2510 6730 2510
Wire Wire Line
	6930 1815 6930 2310
Wire Wire Line
	6930 2310 6930 3180
Connection ~ 6930 2310
Wire Wire Line
	6155 2310 6930 2310
Wire Wire Line
	6830 1815 6830 2410
Wire Wire Line
	6830 2410 6830 3080
Connection ~ 6830 2410
Wire Wire Line
	6155 2410 6830 2410
Connection ~ 7230 2010
Wire Wire Line
	6155 2010 7230 2010
Wire Wire Line
	7130 1815 7130 2110
Wire Wire Line
	7130 2110 7130 3380
Connection ~ 7130 2110
Wire Wire Line
	6155 2110 7130 2110
Wire Wire Line
	6630 1815 6630 2610
Wire Wire Line
	6630 2610 6630 2880
Connection ~ 6630 2610
Wire Wire Line
	6155 2610 6630 2610
Wire Wire Line
	7030 1815 7030 2210
Wire Wire Line
	7030 2210 7030 3280
Connection ~ 7030 2210
Wire Wire Line
	6155 2210 7030 2210
Wire Wire Line
	7230 2010 7230 3480
Wire Wire Line
	6530 2710 6530 2780
Wire Wire Line
	6530 1815 6530 2710
Connection ~ 6530 2710
Wire Wire Line
	6155 2710 6530 2710
$Comp
L Device:C C4
U 1 1 5DF5B37D
P 5555 7475
F 0 "C4" H 5560 7555 50  0000 L CNN
F 1 "0.1 uF" H 5570 7390 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 5593 7325 50  0001 C CNN
F 3 "~" H 5555 7475 50  0001 C CNN
	1    5555 7475
	1    0    0    -1  
$EndComp
Wire Wire Line
	5180 7325 5555 7325
Connection ~ 5180 7325
Wire Wire Line
	5180 7625 5555 7625
Connection ~ 5180 7625
$Comp
L power:+5V #PWR0111
U 1 1 5DFE19CD
P 1200 6650
F 0 "#PWR0111" H 1200 6500 50  0001 C CNN
F 1 "+5V" H 1215 6823 50  0000 C CNN
F 2 "" H 1200 6650 50  0001 C CNN
F 3 "" H 1200 6650 50  0001 C CNN
	1    1200 6650
	1    0    0    -1  
$EndComp
Wire Wire Line
	1200 6650 1200 6700
Wire Wire Line
	1200 6700 1150 6700
Text Label 9795 5500 0    50   ~ 0
Col7
Text Label 9795 5400 0    50   ~ 0
Col6
Text Label 9795 5300 0    50   ~ 0
Col5
Text Label 9795 5200 0    50   ~ 0
Col4
Text Label 9795 5100 0    50   ~ 0
Col3
Text Label 9795 5000 0    50   ~ 0
Col2
Text Label 9795 4900 0    50   ~ 0
Col1
Text Label 9795 4800 0    50   ~ 0
Col0
Wire Wire Line
	9075 5100 9485 5100
Wire Wire Line
	9475 4900 9075 4900
Wire Wire Line
	9975 4800 9475 4800
Wire Wire Line
	9975 4900 9775 4900
Wire Wire Line
	9975 5000 9475 5000
Wire Wire Line
	9975 5100 9785 5100
Wire Wire Line
	9975 5200 9475 5200
Wire Wire Line
	9785 5300 9975 5300
Wire Wire Line
	9785 5500 9975 5500
Wire Wire Line
	9475 5400 9975 5400
Wire Wire Line
	9075 5500 9485 5500
Wire Wire Line
	9075 5400 9175 5400
Wire Wire Line
	9485 5300 9075 5300
Wire Wire Line
	9075 5200 9175 5200
Wire Wire Line
	9175 5000 9075 5000
Wire Wire Line
	9075 4800 9175 4800
Entry Wire Line
	9975 4900 10075 4800
Entry Wire Line
	9975 4800 10075 4700
Entry Wire Line
	9975 5100 10075 5000
Entry Wire Line
	9975 5000 10075 4900
Entry Wire Line
	9975 5300 10075 5200
Entry Wire Line
	9975 5200 10075 5100
Entry Wire Line
	9975 5500 10075 5400
Entry Wire Line
	9975 5400 10075 5300
$Comp
L Diode:1N4148 D10
U 1 1 5DFACD33
P 9635 5500
F 0 "D10" H 9635 5624 50  0000 C CNN
F 1 "1N4148" H 9455 5600 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9635 5325 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9635 5500 50  0001 C CNN
	1    9635 5500
	-1   0    0    1   
$EndComp
$Comp
L Diode:1N4148 D8
U 1 1 5DF9A8E3
P 9635 5300
F 0 "D8" H 9745 5270 50  0000 C CNN
F 1 "1N4148" H 9433 5340 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9635 5125 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9635 5300 50  0001 C CNN
	1    9635 5300
	-1   0    0    1   
$EndComp
$Comp
L Diode:1N4148 D6
U 1 1 5DF87A8E
P 9635 5100
F 0 "D6" H 9745 5070 50  0000 C CNN
F 1 "1N4148" H 9433 5140 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9635 4925 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9635 5100 50  0001 C CNN
	1    9635 5100
	-1   0    0    1   
$EndComp
$Comp
L Diode:1N4148 D9
U 1 1 5DF6B891
P 9325 5400
F 0 "D9" H 9455 5360 50  0000 C CNN
F 1 "1N4148" H 9123 5440 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9325 5225 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9325 5400 50  0001 C CNN
	1    9325 5400
	-1   0    0    1   
$EndComp
$Comp
L Diode:1N4148 D7
U 1 1 5DF5903F
P 9325 5200
F 0 "D7" H 9455 5160 50  0000 C CNN
F 1 "1N4148" H 9123 5240 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9325 5025 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9325 5200 50  0001 C CNN
	1    9325 5200
	-1   0    0    1   
$EndComp
$Comp
L Diode:1N4148 D3
U 1 1 5DF45137
P 9325 4800
F 0 "D3" H 9455 4760 50  0000 C CNN
F 1 "1N4148" H 9215 4670 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9325 4625 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9325 4800 50  0001 C CNN
	1    9325 4800
	-1   0    0    1   
$EndComp
$Comp
L Diode:1N4148 D5
U 1 1 5DF31D18
P 9325 5000
F 0 "D5" H 9465 4960 50  0000 C CNN
F 1 "1N4148" H 9123 5040 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9325 4825 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9325 5000 50  0001 C CNN
	1    9325 5000
	-1   0    0    1   
$EndComp
$Comp
L Diode:1N4148 D4
U 1 1 5DF29274
P 9625 4900
F 0 "D4" H 9735 4870 50  0000 C CNN
F 1 "1N4148" H 9423 4940 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9625 4725 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9625 4900 50  0001 C CNN
	1    9625 4900
	-1   0    0    1   
$EndComp
$Comp
L Switch:SW_DIP_x08 SW1
U 1 1 5DF0476A
P 8775 5200
F 0 "SW1" H 8775 5867 50  0000 C CNN
F 1 "Options" H 8775 5776 50  0000 C CNN
F 2 "Button_Switch_THT:SW_DIP_SPSTx08_Piano_CTS_Series194-8MSTN_W7.62mm_P2.54mm" H 8775 5200 50  0001 C CNN
F 3 "~" H 8775 5200 50  0001 C CNN
	1    8775 5200
	1    0    0    -1  
$EndComp
Connection ~ 10075 4085
Entry Wire Line
	8200 5055 8300 5155
Wire Bus Line
	8200 5055 7800 5055
Wire Wire Line
	8475 4800 8300 4800
Text Label 8325 4800 0    50   ~ 0
Row8
Wire Wire Line
	8300 4800 8300 4900
Wire Wire Line
	8300 5500 8475 5500
Wire Wire Line
	8475 5400 8300 5400
Connection ~ 8300 5400
Wire Wire Line
	8300 5400 8300 5500
Wire Wire Line
	8475 5300 8300 5300
Connection ~ 8300 5300
Wire Wire Line
	8300 5300 8300 5400
Wire Wire Line
	8475 5200 8300 5200
Connection ~ 8300 5200
Wire Wire Line
	8300 5200 8300 5300
Wire Wire Line
	8475 5100 8300 5100
Connection ~ 8300 5100
Wire Wire Line
	8475 5000 8300 5000
Connection ~ 8300 5000
Wire Wire Line
	8300 5000 8300 5100
Wire Wire Line
	8475 4900 8300 4900
Connection ~ 8300 4900
Wire Wire Line
	8300 4900 8300 5000
Connection ~ 7800 5055
$Comp
L Connector_Generic:Conn_01x04 J6
U 1 1 5E4CDDD4
P 950 6900
F 0 "J6" H 868 6475 50  0000 C CNN
F 1 "UART" H 868 6566 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal" H 950 6900 50  0001 C CNN
F 3 "~" H 950 6900 50  0001 C CNN
	1    950  6900
	-1   0    0    1   
$EndComp
Entry Wire Line
	7800 3050 7900 2950
Entry Wire Line
	7800 3150 7900 3050
Entry Wire Line
	7800 2950 7900 2850
Wire Wire Line
	7900 2850 8560 2850
Wire Wire Line
	8560 2950 7900 2950
Wire Wire Line
	7900 3050 8560 3050
Wire Wire Line
	8560 3150 7900 3150
Wire Wire Line
	9060 3050 9975 3050
Wire Wire Line
	9060 2850 9975 2850
Wire Wire Line
	9060 2950 9975 2950
Wire Wire Line
	9060 3150 9975 3150
Entry Wire Line
	7800 3250 7900 3150
Text Label 9615 2250 0    50   ~ 0
CAPS_LED
Wire Wire Line
	9095 1450 9095 1115
Wire Wire Line
	9060 1450 9095 1450
$Comp
L power:+5V #PWR011
U 1 1 5E28FE49
P 9095 780
F 0 "#PWR011" H 9095 630 50  0001 C CNN
F 1 "+5V" H 9110 953 50  0000 C CNN
F 2 "" H 9095 780 50  0001 C CNN
F 3 "" H 9095 780 50  0001 C CNN
	1    9095 780 
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D14
U 1 1 5E316F0B
P 7150 4530
F 0 "D14" H 7120 4190 50  0000 C CNN
F 1 "1N4148" H 6948 4570 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7150 4355 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7150 4530 50  0001 C CNN
	1    7150 4530
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D18
U 1 1 5E32CB02
P 7280 4430
F 0 "D18" H 7310 3990 50  0000 C CNN
F 1 "1N4148" H 7078 4470 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7280 4255 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7280 4430 50  0001 C CNN
	1    7280 4430
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D13
U 1 1 5E34160D
P 7150 4330
F 0 "D13" H 7120 3860 50  0000 C CNN
F 1 "1N4148" H 6948 4370 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7150 4155 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7150 4330 50  0001 C CNN
	1    7150 4330
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D23
U 1 1 5E412853
P 7300 5370
F 0 "D23" H 7370 4570 50  0000 C CNN
F 1 "1N4148" H 7240 5480 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7300 5195 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7300 5370 50  0001 C CNN
	1    7300 5370
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D22
U 1 1 5E412859
P 7170 6070
F 0 "D22" H 7150 5730 50  0000 C CNN
F 1 "1N4148" H 6968 6110 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7170 5895 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7170 6070 50  0001 C CNN
	1    7170 6070
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D26
U 1 1 5E41285F
P 7310 5970
F 0 "D26" H 7370 5530 50  0000 C CNN
F 1 "1N4148" H 7108 6010 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7310 5795 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7310 5970 50  0001 C CNN
	1    7310 5970
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D21
U 1 1 5E412865
P 7170 5870
F 0 "D21" H 7150 5410 50  0000 C CNN
F 1 "1N4148" H 6968 5910 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7170 5695 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7170 5870 50  0001 C CNN
	1    7170 5870
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D20
U 1 1 5E41286B
P 7170 5670
F 0 "D20" H 7150 5090 50  0000 C CNN
F 1 "1N4148" H 6968 5710 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7170 5495 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7170 5670 50  0001 C CNN
	1    7170 5670
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D19
U 1 1 5E412871
P 7160 5470
F 0 "D19" H 7150 4770 50  0000 C CNN
F 1 "1N4148" H 6958 5510 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7160 5295 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7160 5470 50  0001 C CNN
	1    7160 5470
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D25
U 1 1 5E412877
P 7300 5770
F 0 "D25" H 7370 5210 50  0000 C CNN
F 1 "1N4148" H 7098 5810 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7300 5595 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7300 5770 50  0001 C CNN
	1    7300 5770
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D24
U 1 1 5E41287D
P 7300 5570
F 0 "D24" H 7370 4890 50  0000 C CNN
F 1 "1N4148" H 7098 5610 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7300 5395 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7300 5570 50  0001 C CNN
	1    7300 5570
	1    0    0    -1  
$EndComp
Wire Wire Line
	6950 3830 7120 3830
Wire Wire Line
	6990 3930 6950 3930
Wire Wire Line
	6950 4030 7130 4030
Wire Wire Line
	6950 4130 7000 4130
Wire Wire Line
	6950 4230 7130 4230
Wire Wire Line
	6950 4330 7000 4330
Wire Wire Line
	6950 4430 7130 4430
Wire Wire Line
	6950 4530 7000 4530
Wire Wire Line
	7300 4530 7700 4530
Wire Wire Line
	7700 4430 7430 4430
Wire Wire Line
	7300 4330 7700 4330
Wire Wire Line
	7700 4230 7430 4230
Wire Wire Line
	7700 4130 7300 4130
Wire Wire Line
	7700 4030 7430 4030
Wire Wire Line
	7290 3930 7700 3930
Wire Wire Line
	7700 3830 7420 3830
Wire Wire Line
	6960 5370 7150 5370
Wire Wire Line
	7010 5470 6960 5470
Wire Wire Line
	6960 5570 7150 5570
Wire Wire Line
	7020 5670 6960 5670
Wire Wire Line
	6960 5770 7150 5770
Wire Wire Line
	6960 5870 7020 5870
Wire Wire Line
	7160 5970 6960 5970
Wire Wire Line
	6960 6070 7020 6070
Wire Wire Line
	7320 6070 7700 6070
Wire Wire Line
	7700 5970 7460 5970
Wire Wire Line
	7700 5870 7320 5870
Wire Wire Line
	7700 5770 7450 5770
Wire Wire Line
	7320 5670 7700 5670
Wire Wire Line
	7700 5370 7450 5370
$Comp
L Diode:1N4148 D17
U 1 1 5E37FC86
P 7280 4230
F 0 "D17" H 7310 3660 50  0000 C CNN
F 1 "1N4148" H 7078 4270 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7280 4055 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7280 4230 50  0001 C CNN
	1    7280 4230
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D12
U 1 1 5E357678
P 7150 4130
F 0 "D12" H 7120 3540 50  0000 C CNN
F 1 "1N4148" H 6948 4170 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7150 3955 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7150 4130 50  0001 C CNN
	1    7150 4130
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D16
U 1 1 5E3942E4
P 7280 4030
F 0 "D16" H 7310 3340 50  0000 C CNN
F 1 "1N4148" H 7078 4070 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7280 3855 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7280 4030 50  0001 C CNN
	1    7280 4030
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D11
U 1 1 5E36B862
P 7140 3930
F 0 "D11" H 7120 3210 50  0000 C CNN
F 1 "1N4148" H 6938 3970 50  0001 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7140 3755 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7140 3930 50  0001 C CNN
	1    7140 3930
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D15
U 1 1 5E301C34
P 7270 3830
F 0 "D15" H 7310 3010 50  0000 C CNN
F 1 "1N4148" H 7210 3940 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7270 3655 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 7270 3830 50  0001 C CNN
	1    7270 3830
	1    0    0    -1  
$EndComp
Wire Wire Line
	7310 5470 7700 5470
Wire Wire Line
	7700 5570 7450 5570
Wire Wire Line
	9500 1350 9975 1350
Wire Wire Line
	7900 2350 8560 2350
Entry Wire Line
	9975 1250 10075 1350
Entry Wire Line
	9975 1750 10075 1850
Text Label 9760 1750 0    50   ~ 0
Row7
Text Label 9760 1650 0    50   ~ 0
Col0
$Comp
L Device:R_US R3
U 1 1 5EAA5774
P 9095 965
F 0 "R3" H 8940 1020 50  0000 L CNN
F 1 "330" H 8885 945 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 9135 955 50  0001 C CNN
F 3 "~" H 9095 965 50  0001 C CNN
	1    9095 965 
	1    0    0    -1  
$EndComp
Wire Wire Line
	9095 815  9095 780 
$Comp
L Diode:1N4148 D2
U 1 1 5D9C0280
P 9355 1750
F 0 "D2" H 9465 1720 50  0000 C CNN
F 1 "1N4148" H 9530 1790 40  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9355 1575 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9355 1750 50  0001 C CNN
	1    9355 1750
	-1   0    0    1   
$EndComp
$Comp
L Diode:1N4148 D27
U 1 1 5EB56F93
P 9355 2150
F 0 "D27" H 9465 2120 50  0000 C CNN
F 1 "1N4148" H 9530 2185 40  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9355 1975 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9355 2150 50  0001 C CNN
	1    9355 2150
	-1   0    0    1   
$EndComp
Entry Wire Line
	9975 2150 10075 2250
Wire Wire Line
	9975 1250 9060 1250
Wire Wire Line
	9060 1350 9200 1350
Wire Wire Line
	9975 1750 9505 1750
Wire Wire Line
	9205 1750 9060 1750
Wire Wire Line
	9060 2050 9975 2050
Wire Wire Line
	9975 2150 9505 2150
Wire Wire Line
	9205 2150 9060 2150
Text Notes 9450 2145 0    50   ~ 0
Rubout
Text Notes 9495 1740 0    50   ~ 0
@
Text Notes 9445 1340 0    50   ~ 0
Power
Wire Wire Line
	9060 1550 9145 1550
Wire Wire Line
	9145 1550 9145 1535
Wire Wire Line
	9145 1535 9210 1535
$Comp
L power:GND #PWR012
U 1 1 5EB0660B
P 9210 1535
F 0 "#PWR012" H 9210 1285 50  0001 C CNN
F 1 "GND" H 9340 1490 50  0000 C CNN
F 2 "" H 9210 1535 50  0001 C CNN
F 3 "" H 9210 1535 50  0001 C CNN
	1    9210 1535
	1    0    0    -1  
$EndComp
$Comp
L Device:R_US R4
U 1 1 5EE753E3
P 9330 2350
F 0 "R4" V 9295 2435 50  0000 L CNN
F 1 "330" V 9405 2280 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 9370 2340 50  0001 C CNN
F 3 "~" H 9330 2350 50  0001 C CNN
	1    9330 2350
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR014
U 1 1 5EE8EA9E
P 9590 2350
F 0 "#PWR014" H 9590 2100 50  0001 C CNN
F 1 "GND" H 9720 2305 50  0000 C CNN
F 2 "" H 9590 2350 50  0001 C CNN
F 3 "" H 9590 2350 50  0001 C CNN
	1    9590 2350
	1    0    0    -1  
$EndComp
Wire Wire Line
	9060 2350 9180 2350
Wire Wire Line
	9480 2350 9590 2350
Entry Wire Line
	9975 2250 10075 2350
Wire Wire Line
	9060 2250 9975 2250
Wire Wire Line
	8300 5100 8300 5200
Wire Wire Line
	9060 1650 9976 1650
Wire Bus Line
	7800 4085 7800 5055
Wire Bus Line
	10075 4085 10075 5400
Wire Bus Line
	7800 5055 7800 6615
Wire Bus Line
	5200 4050 5200 6425
Wire Bus Line
	10075 1270 10075 4085
Wire Bus Line
	1975 1495 1975 6425
Wire Bus Line
	7800 1350 7800 4085
$EndSCHEMATC