1 files changed, 199 insertions, 0 deletions
diff --git a/Hardware/buttons.sch b/Hardware/buttons.sch
new file mode 100644
index 0000000..a3fcb69
--- /dev/null
+++ b/Hardware/buttons.sch
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+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 3 4
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L Connector:Conn_01x08_Female J5
+U 1 1 5DDED974
+P 5200 1900
+F 0 "J5" V 5250 1450 50  0000 L CNN
+F 1 "Conn_01x08_Female" V 5250 1650 50  0000 L CNN
+F 2 "Connector_PinHeader_2.00mm:PinHeader_1x08_P2.00mm_Vertical" H 5200 1900 50  0001 C CNN
+F 3 "~" H 5200 1900 50  0001 C CNN
+	1    5200 1900
+	0    -1   -1   0   
+$EndComp
+Text HLabel 3450 3000 0    50   BiDi ~ 0
+VCC
+Text HLabel 3450 5250 0    50   BiDi ~ 0
+GND
+Text HLabel 3450 4650 0    50   Input ~ 0
+CLK
+$Comp
+L 74xx:74HC164 U6
+U 1 1 5DCCE5D7
+P 4400 3850
+F 0 "U6" H 4650 4300 50  0000 C CNN
+F 1 "74HC164" H 4150 4300 50  0000 C CNN
+F 2 "Package_SO:TSSOP-14_4.4x5mm_P0.65mm" H 5300 3550 50  0001 C CNN
+F 3 "https://assets.nexperia.com/documents/data-sheet/74HC_HCT164.pdf" H 5300 3550 50  0001 C CNN
+	1    4400 3850
+	1    0    0    -1  
+$EndComp
+Text HLabel 3450 3850 0    50   Input ~ 0
+ROWS
+Wire Wire Line
+	4800 3550 4900 3550
+Wire Wire Line
+	4800 3650 5000 3650
+Wire Wire Line
+	4800 3750 5100 3750
+Wire Wire Line
+	4800 3850 5200 3850
+Wire Wire Line
+	4400 5250 5800 5250
+Wire Wire Line
+	4400 3000 5800 3000
+Connection ~ 4400 3000
+Wire Wire Line
+	4000 4150 3900 4150
+Wire Wire Line
+	4000 3950 3900 3950
+Wire Wire Line
+	3900 3950 3900 3850
+Wire Wire Line
+	3900 3850 4000 3850
+Wire Wire Line
+	4000 3650 3900 3650
+Wire Wire Line
+	3900 3650 3900 3000
+Wire Wire Line
+	3900 3000 4400 3000
+Wire Wire Line
+	5300 3650 6100 3650
+Wire Wire Line
+	5400 3750 6100 3750
+Wire Wire Line
+	5500 3850 6100 3850
+Wire Wire Line
+	5600 3950 6100 3950
+Text HLabel 7100 3550 2    50   Output ~ 0
+COLUMNS
+NoConn ~ 4800 3950
+NoConn ~ 4800 4050
+NoConn ~ 4800 4150
+NoConn ~ 4800 4250
+NoConn ~ 6100 4350
+NoConn ~ 6100 4250
+NoConn ~ 6100 4150
+NoConn ~ 6100 4050
+NoConn ~ 6100 3550
+$Comp
+L 74xx:74LS166 U7
+U 1 1 5DCEF9EB
+P 6600 4250
+F 0 "U7" H 6800 5100 50  0000 L CNN
+F 1 "74LS166" H 6200 5100 50  0000 L CNN
+F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 6600 4250 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74LS166" H 6600 4250 50  0001 C CNN
+	1    6600 4250
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3900 4150 3900 4650
+Wire Wire Line
+	3900 4650 6100 4650
+Wire Wire Line
+	6100 4950 6000 4950
+Wire Wire Line
+	6000 4950 6000 5250
+Connection ~ 6000 5250
+Wire Wire Line
+	6000 5250 6600 5250
+Wire Wire Line
+	6100 4750 6000 4750
+Wire Wire Line
+	6000 4750 6000 4950
+Connection ~ 6000 4950
+Text HLabel 3450 4550 0    50   Input ~ 0
+LOAD
+$Comp
+L Device:C C15
+U 1 1 5DE94356
+P 3650 3550
+F 0 "C15" H 3700 3650 50  0000 L CNN
+F 1 "~100nF" H 3700 3450 50  0000 L CNN
+F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 3688 3400 50  0001 C CNN
+F 3 "~" H 3650 3550 50  0001 C CNN
+	1    3650 3550
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:C C16
+U 1 1 5DE96BB8
+P 5800 4200
+F 0 "C16" H 5850 4300 50  0000 L CNN
+F 1 "~100nF" H 5850 4100 50  0000 L CNN
+F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 5838 4050 50  0001 C CNN
+F 3 "~" H 5800 4200 50  0001 C CNN
+	1    5800 4200
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	5800 4350 5800 5250
+Connection ~ 5800 5250
+Wire Wire Line
+	5800 5250 6000 5250
+Wire Wire Line
+	3450 3000 3650 3000
+Connection ~ 3900 3000
+Wire Wire Line
+	3450 5250 3650 5250
+Connection ~ 4400 5250
+Wire Wire Line
+	4400 4450 4400 5250
+Wire Wire Line
+	4400 3000 4400 3350
+Wire Wire Line
+	6600 3000 6600 3250
+Wire Wire Line
+	5800 4050 5800 3000
+Connection ~ 5800 3000
+Wire Wire Line
+	5800 3000 6600 3000
+Wire Wire Line
+	3650 3400 3650 3000
+Connection ~ 3650 3000
+Wire Wire Line
+	3650 3000 3900 3000
+Wire Wire Line
+	3650 3700 3650 5250
+Connection ~ 3650 5250
+Wire Wire Line
+	3650 5250 4400 5250
+Wire Wire Line
+	3450 4650 3900 4650
+Connection ~ 3900 4650
+Wire Wire Line
+	3450 4550 6100 4550
+Wire Wire Line
+	3450 3850 3900 3850
+Connection ~ 3900 3850
+Wire Wire Line
+	5600 2100 5600 3950
+Wire Wire Line
+	5500 2100 5500 3850
+Wire Wire Line
+	5400 2100 5400 3750
+Wire Wire Line
+	5300 2100 5300 3650
+Wire Wire Line
+	5200 2100 5200 3850
+Wire Wire Line
+	5100 2100 5100 3750
+Wire Wire Line
+	5000 2100 5000 3650
+Wire Wire Line
+	4900 2100 4900 3550
+$EndSCHEMATC