diff --git a/pat80-io-devices/keyboard/hardware/keyboard/keyboard-cache.lib b/pat80-io-devices/keyboard/hardware/keyboard/keyboard-cache.lib
new file mode 100644
index 0000000..8cdf3e5
--- /dev/null
+++ b/pat80-io-devices/keyboard/hardware/keyboard/keyboard-cache.lib
@@ -0,0 +1,262 @@
+EESchema-LIBRARY Version 2.4
+#encoding utf-8
+#
+# 74xx_74HC244
+#
+DEF 74xx_74HC244 U 0 40 Y Y 1 L N
+F0 "U" -300 650 50 H V C CNN
+F1 "74xx_74HC244" -300 -650 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS 74HCT244
+$FPLIST
+ TSSOP*4.4x6.5mm*P0.65mm*
+ SSOP*4.4x6.5mm*P0.65mm*
+$ENDFPLIST
+DRAW
+S -300 600 300 -600 1 1 10 f
+P 4 1 0 6 50 0 -50 50 -50 -50 50 0 N
+X 1OE 1 -500 -400 200 R 50 50 1 0 I I
+X GND 10 0 -800 200 U 50 50 1 0 W
+X 2A3 11 -500 -200 200 R 50 50 1 0 I
+X 1Y3 12 500 200 200 L 50 50 1 0 O
+X 2A2 13 -500 -100 200 R 50 50 1 0 I
+X 1Y2 14 500 300 200 L 50 50 1 0 O
+X 2A1 15 -500 0 200 R 50 50 1 0 I
+X 1Y1 16 500 400 200 L 50 50 1 0 O
+X 2A0 17 -500 100 200 R 50 50 1 0 I
+X 1Y0 18 500 500 200 L 50 50 1 0 O
+X 2OE 19 -500 -500 200 R 50 50 1 0 I I
+X 1A0 2 -500 500 200 R 50 50 1 0 I
+X VCC 20 0 800 200 D 50 50 1 0 W
+X 2Y0 3 500 100 200 L 50 50 1 0 O
+X 1A1 4 -500 400 200 R 50 50 1 0 I
+X 2Y1 5 500 0 200 L 50 50 1 0 O
+X 1A2 6 -500 300 200 R 50 50 1 0 I
+X 2Y2 7 500 -100 200 L 50 50 1 0 O
+X 1A3 8 -500 200 200 R 50 50 1 0 I
+X 2Y3 9 500 -200 200 L 50 50 1 0 O
+ENDDRAW
+ENDDEF
+#
+# 74xx_74LS138
+#
+DEF 74xx_74LS138 U 0 40 Y Y 1 L N
+F0 "U" -300 450 50 H V C CNN
+F1 "74xx_74LS138" -300 -550 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ DIP?16*
+$ENDFPLIST
+DRAW
+S -300 400 300 -500 1 1 10 f
+X A0 1 -500 300 200 R 50 50 1 0 I
+X O5 10 500 -200 200 L 50 50 1 0 O V
+X O4 11 500 -100 200 L 50 50 1 0 O V
+X O3 12 500 0 200 L 50 50 1 0 O V
+X O2 13 500 100 200 L 50 50 1 0 O V
+X O1 14 500 200 200 L 50 50 1 0 O V
+X O0 15 500 300 200 L 50 50 1 0 O V
+X VCC 16 0 600 200 D 50 50 1 0 W
+X A1 2 -500 200 200 R 50 50 1 0 I
+X A2 3 -500 100 200 R 50 50 1 0 I
+X E1 4 -500 -400 200 R 50 50 1 0 I L
+X E2 5 -500 -300 200 R 50 50 1 0 I L
+X E3 6 -500 -200 200 R 50 50 1 0 I
+X O7 7 500 -400 200 L 50 50 1 0 O V
+X GND 8 0 -700 200 U 50 50 1 0 W
+X O6 9 500 -300 200 L 50 50 1 0 O V
+ENDDRAW
+ENDDEF
+#
+# Connector_Generic_Conn_01x10
+#
+DEF Connector_Generic_Conn_01x10 J 0 40 Y N 1 F N
+F0 "J" 0 500 50 H V C CNN
+F1 "Connector_Generic_Conn_01x10" 0 -600 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*_1x??_*
+$ENDFPLIST
+DRAW
+S -50 -495 0 -505 1 1 6 N
+S -50 -395 0 -405 1 1 6 N
+S -50 -295 0 -305 1 1 6 N
+S -50 -195 0 -205 1 1 6 N
+S -50 -95 0 -105 1 1 6 N
+S -50 5 0 -5 1 1 6 N
+S -50 105 0 95 1 1 6 N
+S -50 205 0 195 1 1 6 N
+S -50 305 0 295 1 1 6 N
+S -50 405 0 395 1 1 6 N
+S -50 450 50 -550 1 1 10 f
+X Pin_1 1 -200 400 150 R 50 50 1 1 P
+X Pin_10 10 -200 -500 150 R 50 50 1 1 P
+X Pin_2 2 -200 300 150 R 50 50 1 1 P
+X Pin_3 3 -200 200 150 R 50 50 1 1 P
+X Pin_4 4 -200 100 150 R 50 50 1 1 P
+X Pin_5 5 -200 0 150 R 50 50 1 1 P
+X Pin_6 6 -200 -100 150 R 50 50 1 1 P
+X Pin_7 7 -200 -200 150 R 50 50 1 1 P
+X Pin_8 8 -200 -300 150 R 50 50 1 1 P
+X Pin_9 9 -200 -400 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Connector_Generic_Conn_01x19
+#
+DEF Connector_Generic_Conn_01x19 J 0 40 Y N 1 F N
+F0 "J" 0 1000 50 H V C CNN
+F1 "Connector_Generic_Conn_01x19" 0 -1000 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*_1x??_*
+$ENDFPLIST
+DRAW
+S -50 -895 0 -905 1 1 6 N
+S -50 -795 0 -805 1 1 6 N
+S -50 -695 0 -705 1 1 6 N
+S -50 -595 0 -605 1 1 6 N
+S -50 -495 0 -505 1 1 6 N
+S -50 -395 0 -405 1 1 6 N
+S -50 -295 0 -305 1 1 6 N
+S -50 -195 0 -205 1 1 6 N
+S -50 -95 0 -105 1 1 6 N
+S -50 5 0 -5 1 1 6 N
+S -50 105 0 95 1 1 6 N
+S -50 205 0 195 1 1 6 N
+S -50 305 0 295 1 1 6 N
+S -50 405 0 395 1 1 6 N
+S -50 505 0 495 1 1 6 N
+S -50 605 0 595 1 1 6 N
+S -50 705 0 695 1 1 6 N
+S -50 805 0 795 1 1 6 N
+S -50 905 0 895 1 1 6 N
+S -50 950 50 -950 1 1 10 f
+X Pin_1 1 -200 900 150 R 50 50 1 1 P
+X Pin_10 10 -200 0 150 R 50 50 1 1 P
+X Pin_11 11 -200 -100 150 R 50 50 1 1 P
+X Pin_12 12 -200 -200 150 R 50 50 1 1 P
+X Pin_13 13 -200 -300 150 R 50 50 1 1 P
+X Pin_14 14 -200 -400 150 R 50 50 1 1 P
+X Pin_15 15 -200 -500 150 R 50 50 1 1 P
+X Pin_16 16 -200 -600 150 R 50 50 1 1 P
+X Pin_17 17 -200 -700 150 R 50 50 1 1 P
+X Pin_18 18 -200 -800 150 R 50 50 1 1 P
+X Pin_19 19 -200 -900 150 R 50 50 1 1 P
+X Pin_2 2 -200 800 150 R 50 50 1 1 P
+X Pin_3 3 -200 700 150 R 50 50 1 1 P
+X Pin_4 4 -200 600 150 R 50 50 1 1 P
+X Pin_5 5 -200 500 150 R 50 50 1 1 P
+X Pin_6 6 -200 400 150 R 50 50 1 1 P
+X Pin_7 7 -200 300 150 R 50 50 1 1 P
+X Pin_8 8 -200 200 150 R 50 50 1 1 P
+X Pin_9 9 -200 100 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_C
+#
+DEF Device_C C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "Device_C" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ C_*
+$ENDFPLIST
+DRAW
+P 2 0 1 20 -80 -30 80 -30 N
+P 2 0 1 20 -80 30 80 30 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_D
+#
+DEF Device_D D 0 40 N N 1 F N
+F0 "D" 0 100 50 H V C CNN
+F1 "Device_D" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ TO-???*
+ *_Diode_*
+ *SingleDiode*
+ D_*
+$ENDFPLIST
+DRAW
+P 2 0 1 8 -50 50 -50 -50 N
+P 2 0 1 0 50 0 -50 0 N
+P 4 0 1 8 50 50 50 -50 -50 0 50 50 N
+X K 1 -150 0 100 R 50 50 1 1 P
+X A 2 150 0 100 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_R
+#
+DEF Device_R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "Device_R" 0 0 50 V V C CNN
+F2 "" -70 0 50 V I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ R_*
+$ENDFPLIST
+DRAW
+S -40 -100 40 100 0 1 10 N
+X ~ 1 0 150 50 D 50 50 1 1 P
+X ~ 2 0 -150 50 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Switch_SW_Push
+#
+DEF Switch_SW_Push SW 0 40 N N 1 F N
+F0 "SW" 50 100 50 H V L CNN
+F1 "Switch_SW_Push" 0 -60 50 H V C CNN
+F2 "" 0 200 50 H I C CNN
+F3 "" 0 200 50 H I C CNN
+DRAW
+C -80 0 20 0 1 0 N
+C 80 0 20 0 1 0 N
+P 2 0 1 0 0 50 0 120 N
+P 2 0 1 0 100 50 -100 50 N
+X 1 1 -200 0 100 R 50 50 0 1 P
+X 2 2 200 0 100 L 50 50 0 1 P
+ENDDRAW
+ENDDEF
+#
+# power_GND
+#
+DEF power_GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "power_GND" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 6 0 1 0 0 0 0 -50 50 -50 0 -100 -50 -50 0 -50 N
+X GND 1 0 0 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# power_VCC
+#
+DEF power_VCC #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "power_VCC" 0 150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+C 0 75 25 0 1 0 N
+P 2 0 1 0 0 0 0 50 N
+X VCC 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+#End Library
diff --git a/pat80-io-devices/keyboard/hardware/keyboard/keyboard.kicad_pcb b/pat80-io-devices/keyboard/hardware/keyboard/keyboard.kicad_pcb
new file mode 100644
index 0000000..02c8ecb
--- /dev/null
+++ b/pat80-io-devices/keyboard/hardware/keyboard/keyboard.kicad_pcb
@@ -0,0 +1 @@
+(kicad_pcb (version 4) (host kicad "dummy file") )
diff --git a/pat80-io-devices/keyboard/hardware/keyboard/keyboard.pro b/pat80-io-devices/keyboard/hardware/keyboard/keyboard.pro
new file mode 100644
index 0000000..152769c
--- /dev/null
+++ b/pat80-io-devices/keyboard/hardware/keyboard/keyboard.pro
@@ -0,0 +1,33 @@
+update=22/05/2015 07:44:53
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
diff --git a/pat80-io-devices/keyboard/hardware/keyboard/keyboard.sch b/pat80-io-devices/keyboard/hardware/keyboard/keyboard.sch
new file mode 100644
index 0000000..291aab2
--- /dev/null
+++ b/pat80-io-devices/keyboard/hardware/keyboard/keyboard.sch
@@ -0,0 +1,1838 @@
+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+$Descr A4 8268 11693 portrait
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L 74xx:74LS138 U?
+U 1 1 60577A7C
+P 5100 1650
+F 0 "U?" H 5100 2431 50  0000 C CNN
+F 1 "74HC138" H 5100 2340 50  0000 C CNN
+F 2 "" H 5100 1650 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74LS138" H 5100 1650 50  0001 C CNN
+	1    5100 1650
+	1    0    0    -1  
+$EndComp
+$Comp
+L 74xx:74HC244 U?
+U 1 1 605787CB
+P 3150 2350
+F 0 "U?" H 3150 3331 50  0000 C CNN
+F 1 "74HC244" H 3150 3240 50  0000 C CNN
+F 2 "" H 3150 2350 50  0001 C CNN
+F 3 "http://www.nxp.com/documents/data_sheet/74HC_HCT244.pdf" H 3150 2350 50  0001 C CNN
+	1    3150 2350
+	-1   0    0    -1  
+$EndComp
+$Comp
+L Connector_Generic:Conn_01x19 IOBUS
+U 1 1 6057928D
+P 750 1950
+F 0 "IOBUS" H 668 3067 50  0000 C CNN
+F 1 "IO_Bus_conn" H 668 2976 50  0000 C CNN
+F 2 "" H 750 1950 50  0001 C CNN
+F 3 "~" H 750 1950 50  0001 C CNN
+	1    750  1950
+	-1   0    0    -1  
+$EndComp
+Wire Wire Line
+	950  1050 1450 1050
+Wire Wire Line
+	950  1650 1450 1650
+Wire Wire Line
+	950  1750 1450 1750
+Wire Wire Line
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+Wire Wire Line
+	950  2850 1450 2850
+Text Label 1050 1050 0    50   ~ 0
+IOVCC
+Text Label 1050 1150 0    50   ~ 0
+IOGND
+Text Label 1050 1250 0    50   ~ 0
+IOEN
+Text Label 1050 1350 0    50   ~ 0
+IOADDR0
+Text Label 1050 1450 0    50   ~ 0
+IOADDR1
+Text Label 1050 1550 0    50   ~ 0
+IOADDR2
+Text Label 1050 1650 0    50   ~ 0
+IOADDR3
+Text Label 1050 1750 0    50   ~ 0
+IOADDR4
+Text Label 1050 1850 0    50   ~ 0
+IOD0
+Text Label 1050 1950 0    50   ~ 0
+IOD1
+Text Label 1050 2050 0    50   ~ 0
+IOD2
+Text Label 1050 2150 0    50   ~ 0
+IOD3
+Text Label 1050 2250 0    50   ~ 0
+IOD4
+Text Label 1050 2350 0    50   ~ 0
+IOD5
+Text Label 1050 2450 0    50   ~ 0
+IOD6
+Text Label 1050 2550 0    50   ~ 0
+IOD7
+Text Label 1050 2650 0    50   ~ 0
+IOWR
+Text Label 1050 2750 0    50   ~ 0
+IOGND
+Text Label 1050 2850 0    50   ~ 0
+IOVCC
+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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+$Comp
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+F 2 "" H 1450 750 50  0001 C CNN
+F 3 "" H 1450 750 50  0001 C CNN
+	1    1450 750 
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR?
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+P 1650 750
+F 0 "#PWR?" H 1650 500 50  0001 C CNN
+F 1 "GND" H 1655 577 50  0000 C CNN
+F 2 "" H 1650 750 50  0001 C CNN
+F 3 "" H 1650 750 50  0001 C CNN
+	1    1650 750 
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+$Comp
+L power:GND #PWR?
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+F 1 "GND" H 1555 2777 50  0000 C CNN
+F 2 "" H 1550 2950 50  0001 C CNN
+F 3 "" H 1550 2950 50  0001 C CNN
+	1    1550 2950
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:VCC #PWR?
+U 1 1 60585FB5
+P 1700 3200
+F 0 "#PWR?" H 1700 3050 50  0001 C CNN
+F 1 "VCC" H 1717 3373 50  0000 C CNN
+F 2 "" H 1700 3200 50  0001 C CNN
+F 3 "" H 1700 3200 50  0001 C CNN
+	1    1700 3200
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	1450 3200 1700 3200
+$Comp
+L power:VCC #PWR?
+U 1 1 6058AE17
+P 3150 750
+F 0 "#PWR?" H 3150 600 50  0001 C CNN
+F 1 "VCC" H 3167 923 50  0000 C CNN
+F 2 "" H 3150 750 50  0001 C CNN
+F 3 "" H 3150 750 50  0001 C CNN
+	1    3150 750 
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR?
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+F 0 "#PWR?" H 3150 2900 50  0001 C CNN
+F 1 "GND" H 3155 2977 50  0000 C CNN
+F 2 "" H 3150 3150 50  0001 C CNN
+F 3 "" H 3150 3150 50  0001 C CNN
+	1    3150 3150
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:C C?
+U 1 1 6058B545
+P 3500 800
+F 0 "C?" V 3248 800 50  0000 C CNN
+F 1 "100Nf" V 3339 800 50  0000 C CNN
+F 2 "" H 3538 650 50  0001 C CNN
+F 3 "~" H 3500 800 50  0001 C CNN
+	1    3500 800 
+	0    1    1    0   
+$EndComp
+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 3350 900 
+Wire Wire Line
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+Connection ~ 3150 900 
+Wire Wire Line
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+$Comp
+L power:GND #PWR?
+U 1 1 6058E1A9
+P 3750 900
+F 0 "#PWR?" H 3750 650 50  0001 C CNN
+F 1 "GND" H 3755 727 50  0000 C CNN
+F 2 "" H 3750 900 50  0001 C CNN
+F 3 "" H 3750 900 50  0001 C CNN
+	1    3750 900 
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
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+Connection ~ 3650 900 
+Wire Wire Line
+	3650 900  3650 800 
+$Comp
+L Device:C C?
+U 1 1 6058BC4A
+P 3500 1050
+F 0 "C?" V 3248 1050 50  0000 C CNN
+F 1 "56Pf" V 3339 1050 50  0000 C CNN
+F 2 "" H 3538 900 50  0001 C CNN
+F 3 "~" H 3500 1050 50  0001 C CNN
+	1    3500 1050
+	0    1    1    0   
+$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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+Wire Wire Line
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+Wire Wire Line
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+NoConn ~ 1450 1750
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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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+$Comp
+L power:VCC #PWR?
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+F 0 "#PWR?" H 4600 1700 50  0001 C CNN
+F 1 "VCC" H 4617 2023 50  0000 C CNN
+F 2 "" H 4600 1850 50  0001 C CNN
+F 3 "" H 4600 1850 50  0001 C CNN
+	1    4600 1850
+	1    0    0    -1  
+$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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+Wire Wire Line
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+Wire Wire Line
+	3650 2800 3650 2850
+Wire Wire Line
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+Wire Wire Line
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+Entry Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
+	3650 2450 3900 2450
+Wire Wire Line
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+Text Label 5650 1550 0    50   ~ 0
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+Text Label 5650 1650 0    50   ~ 0
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+Text Label 3700 2350 0    50   ~ 0
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+Text Label 3700 2450 0    50   ~ 0
+ROW6
+Text Label 3700 2550 0    50   ~ 0
+ROW7
+Entry Wire Line
+	2000 3950 2100 4050
+Entry Wire Line
+	2800 3950 2900 4050
+$Comp
+L Device:D D?
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diff --git a/pat80-io-devices/keyboard/hardware/keyboard/keyboard.sch-bak b/pat80-io-devices/keyboard/hardware/keyboard/keyboard.sch-bak
new file mode 100644
index 0000000..106321f
--- /dev/null
+++ b/pat80-io-devices/keyboard/hardware/keyboard/keyboard.sch-bak
@@ -0,0 +1,1838 @@
+EESchema Schematic File Version 4
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+EELAYER END
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+F 0 "D?" H 3550 9484 50  0000 C CNN
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+F 0 "SW?" V 3354 10048 50  0000 L CNN
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+F 0 "D?" H 4350 9484 50  0000 C CNN
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