1 files changed, 200 insertions, 328 deletions
diff --git a/buttons.sch-bak b/buttons.sch-bak
index 09c7d08..58e7bc9 100644
--- a/buttons.sch-bak
+++ b/buttons.sch-bak
@@ -1,328 +1,200 @@
-EESchema Schematic File Version 4
-LIBS:PinLock-cache
-EELAYER 30 0
-EELAYER END
-$Descr A4 11693 8268
-encoding utf-8
-Sheet 4 4
-Title ""
-Date ""
-Rev ""
-Comp ""
-Comment1 ""
-Comment2 ""
-Comment3 ""
-Comment4 ""
-$EndDescr
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-F 2 "" H 5200 1900 50  0001 C CNN
-F 3 "~" H 5200 1900 50  0001 C CNN
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-	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
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-F 3 "https://assets.nexperia.com/documents/data-sheet/74HC_HCT164.pdf" H 5300 3550 50  0001 C CNN
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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
-	5100 3750 5100 2400
-Wire Wire Line
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-Wire Wire Line
-	5200 3850 5200 2500
-Wire Wire Line
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-Wire Wire Line
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-Connection ~ 4400 3000
-Wire Wire Line
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-Wire Wire Line
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-Wire Wire Line
-	3900 3950 3900 3850
-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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-Wire Wire Line
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-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
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-F 3 "http://www.ti.com/lit/gpn/sn74LS166" H 6600 4250 50  0001 C CNN
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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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-Connection ~ 6000 5250
-Wire Wire Line
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-Wire Wire Line
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-Wire Wire Line
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-Connection ~ 6000 4950
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-Connection ~ 5800 5250
-Wire Wire Line
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-Wire Wire Line
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-Connection ~ 3900 3000
-Wire Wire Line
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-Connection ~ 4400 5250
-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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-Connection ~ 5800 3000
-Wire Wire Line
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-Wire Wire Line
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-Connection ~ 3650 3000
-Wire Wire Line
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-Wire Wire Line
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-Connection ~ 3650 5250
-Wire Wire Line
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-Wire Wire Line
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-Connection ~ 3900 4650
-Wire Wire Line
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-Wire Wire Line
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-Connection ~ 3900 3850
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-F 0 "TP?" V 5700 3100 50  0000 L CNN
-F 1 "TestPoint" V 5700 3250 50  0000 L CNN
-F 2 "" H 5900 2900 50  0001 C CNN
-F 3 "~" H 5900 2900 50  0001 C CNN
-	1    5700 2900
-	0    1    1    0   
-$EndComp
-$Comp
-L Connector:TestPoint TP?
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-F 0 "TP?" V 5700 3000 50  0000 L CNN
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-F 2 "" H 5900 2800 50  0001 C CNN
-F 3 "~" H 5900 2800 50  0001 C CNN
-	1    5700 2800
-	0    1    1    0   
-$EndComp
-$Comp
-L Connector:TestPoint TP?
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-P 5700 2700
-F 0 "TP?" V 5700 2900 50  0000 L CNN
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-F 2 "" H 5900 2700 50  0001 C CNN
-F 3 "~" H 5900 2700 50  0001 C CNN
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-	0    1    1    0   
-$EndComp
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-L Connector:TestPoint TP?
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-P 5700 2600
-F 0 "TP?" V 5700 2800 50  0000 L CNN
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-F 2 "" H 5900 2600 50  0001 C CNN
-F 3 "~" H 5900 2600 50  0001 C CNN
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-$EndComp
-$Comp
-L Connector:TestPoint TP?
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-P 5700 2500
-F 0 "TP?" V 5700 2700 50  0000 L CNN
-F 1 "TestPoint" V 5700 2850 50  0000 L CNN
-F 2 "" H 5900 2500 50  0001 C CNN
-F 3 "~" H 5900 2500 50  0001 C CNN
-	1    5700 2500
-	0    1    1    0   
-$EndComp
-$Comp
-L Connector:TestPoint TP?
-U 1 1 5F8266B0
-P 5700 2400
-F 0 "TP?" V 5700 2600 50  0000 L CNN
-F 1 "TestPoint" V 5700 2750 50  0000 L CNN
-F 2 "" H 5900 2400 50  0001 C CNN
-F 3 "~" H 5900 2400 50  0001 C CNN
-	1    5700 2400
-	0    1    1    0   
-$EndComp
-$Comp
-L Connector:TestPoint TP?
-U 1 1 5F8267C2
-P 5700 2300
-F 0 "TP?" V 5700 2500 50  0000 L CNN
-F 1 "TestPoint" V 5700 2650 50  0000 L CNN
-F 2 "" H 5900 2300 50  0001 C CNN
-F 3 "~" H 5900 2300 50  0001 C CNN
-	1    5700 2300
-	0    1    1    0   
-$EndComp
-$Comp
-L Connector:TestPoint TP?
-U 1 1 5F8268E2
-P 5700 2200
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-F 1 "TestPoint" V 5700 2550 50  0000 L CNN
-F 2 "" H 5900 2200 50  0001 C CNN
-F 3 "~" H 5900 2200 50  0001 C CNN
-	1    5700 2200
-	0    1    1    0   
-$EndComp
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-Connection ~ 4900 2200
-Wire Wire Line
-	4900 2200 4900 2100
-Wire Wire Line
-	5000 2300 5700 2300
-Connection ~ 5000 2300
-Wire Wire Line
-	5000 2300 5000 2100
-Wire Wire Line
-	5100 2400 5700 2400
-Connection ~ 5100 2400
-Wire Wire Line
-	5100 2400 5100 2100
-Wire Wire Line
-	5200 2500 5700 2500
-Connection ~ 5200 2500
-Wire Wire Line
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-Wire Wire Line
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-Connection ~ 5300 2600
-Wire Wire Line
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-Wire Wire Line
-	5400 2700 5700 2700
-Connection ~ 5400 2700
-Wire Wire Line
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-Wire Wire Line
-	5500 2800 5700 2800
-Connection ~ 5500 2800
-Wire Wire Line
-	5500 2800 5500 3850
-Wire Wire Line
-	5600 2900 5700 2900
-Connection ~ 5600 2900
-Wire Wire Line
-	5600 2900 5600 3950
-$EndSCHEMATC
+EESchema Schematic File Version 4
+LIBS:PinLock-cache
+EELAYER 30 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 4 4
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L Connector:Conn_01x08_Female J?
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+F 1 "Conn_01x08_Female" V 5250 1650 50  0000 L CNN
+F 2 "" H 5200 1900 50  0001 C CNN
+F 3 "~" H 5200 1900 50  0001 C CNN
+	1    5200 1900
+	0    -1   -1   0   
+$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
+$Comp
+L 74xx:74HC164 U?
+U 1 1 5DCCE5D7
+P 4400 3850
+F 0 "U?" H 4650 4300 50  0000 C CNN
+F 1 "74HC164" H 4150 4300 50  0000 C CNN
+F 2 "" H 5300 3550 50  0001 C CNN
+F 3 "https://assets.nexperia.com/documents/data-sheet/74HC_HCT164.pdf" H 5300 3550 50  0001 C CNN
+	1    4400 3850
+	1    0    0    -1  
+$EndComp
+Text HLabel 3450 3850 0    50   Input ~ 0
+ROWS
+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
+	4800 3850 5200 3850
+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 4400 3000
+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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+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
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+Connection ~ 6000 5250
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+Wire Wire Line
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+Connection ~ 6000 4950
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+$Comp
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+Connection ~ 5800 5250
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+Connection ~ 4400 5250
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+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 5800 3000
+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 3650 3000
+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 3650 5250
+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 3900 4650
+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 3900 3850
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+Wire Wire Line
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+Wire Wire Line
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+$EndSCHEMATC