diff --git a/touchcircuit/touchcircuit-cache.lib b/touchcircuit/touchcircuit-cache.lib
index 525c1e6..631726e 100644
--- a/touchcircuit/touchcircuit-cache.lib
+++ b/touchcircuit/touchcircuit-cache.lib
@@ -70,6 +70,74 @@ X ~ 2 0 -150 50 U 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# Diode_BAV99
+#
+DEF Diode_BAV99 D 0 40 Y N 2 F N
+F0 "D" 0 100 50 H V C CNN
+F1 "Diode_BAV99" 0 -100 50 H V C CNN
+F2 "Package_TO_SOT_SMD:SOT-23" 0 -150 50 H I C CNN
+F3 "" 0 100 50 H I C CNN
+$FPLIST
+ SOT?23*
+$ENDFPLIST
+DRAW
+P 2 0 1 6 -50 50 -50 -50 N
+P 2 0 1 0 50 0 -50 0 N
+P 2 0 1 0 50 50 50 -50 N
+P 3 0 1 0 50 50 -50 0 50 -50 N
+X A 1 150 0 100 L 50 50 1 1 P
+X K 3 -150 0 100 R 50 50 1 1 P
+X K 2 -150 0 100 R 50 50 2 1 P
+X A 3 150 0 100 L 50 50 2 1 P
+ENDDRAW
+ENDDEF
+#
+# MCU_Module_Arduino_Nano_v3.x
+#
+DEF MCU_Module_Arduino_Nano_v3.x A 0 40 Y Y 1 F N
+F0 "A" -200 1025 50 H V R CNN
+F1 "MCU_Module_Arduino_Nano_v3.x" -200 950 50 H V R CNN
+F2 "Module:Arduino_Nano" 150 -950 50 H I L CNN
+F3 "" 0 -1000 50 H I C CNN
+ALIAS Arduino_Nano_v2.x
+$FPLIST
+ Arduino*Nano*
+$ENDFPLIST
+DRAW
+S -400 900 400 -900 0 1 10 f
+X D1/TX 1 -500 500 100 R 50 50 1 1 B
+X D7 10 -500 -100 100 R 50 50 1 1 B
+X D8 11 -500 -200 100 R 50 50 1 1 B
+X D9 12 -500 -300 100 R 50 50 1 1 B
+X D10 13 -500 -400 100 R 50 50 1 1 B
+X D11 14 -500 -500 100 R 50 50 1 1 B
+X D12 15 -500 -600 100 R 50 50 1 1 B
+X D13 16 -500 -700 100 R 50 50 1 1 B
+X 3V3 17 100 1000 100 D 50 50 1 1 w
+X AREF 18 500 200 100 L 50 50 1 1 I
+X A0 19 500 0 100 L 50 50 1 1 B
+X D0/RX 2 -500 600 100 R 50 50 1 1 B
+X A1 20 500 -100 100 L 50 50 1 1 B
+X A2 21 500 -200 100 L 50 50 1 1 B
+X A3 22 500 -300 100 L 50 50 1 1 B
+X A4 23 500 -400 100 L 50 50 1 1 B
+X A5 24 500 -500 100 L 50 50 1 1 B
+X A6 25 500 -600 100 L 50 50 1 1 B
+X A7 26 500 -700 100 L 50 50 1 1 B
+X +5V 27 200 1000 100 D 50 50 1 1 w
+X RESET 28 500 600 100 L 50 50 1 1 I
+X GND 29 100 -1000 100 U 50 50 1 1 W
+X RESET 3 500 500 100 L 50 50 1 1 I
+X VIN 30 -100 1000 100 D 50 50 1 1 W
+X GND 4 0 -1000 100 U 50 50 1 1 W
+X D2 5 -500 400 100 R 50 50 1 1 B
+X D3 6 -500 300 100 R 50 50 1 1 B
+X D4 7 -500 200 100 R 50 50 1 1 B
+X D5 8 -500 100 100 R 50 50 1 1 B
+X D6 9 -500 0 100 R 50 50 1 1 B
+ENDDRAW
+ENDDEF
+#
 # Transistor_BJT_BC337
 #
 DEF Transistor_BJT_BC337 Q 0 0 Y N 1 F N
diff --git a/touchcircuit/touchcircuit.sch b/touchcircuit/touchcircuit.sch
index e42dbce..a07b913 100644
--- a/touchcircuit/touchcircuit.sch
+++ b/touchcircuit/touchcircuit.sch
@@ -1,4 +1,5 @@
 EESchema Schematic File Version 4
+LIBS:touchcircuit-cache
 EELAYER 26 0
 EELAYER END
 $Descr A4 11693 8268
@@ -14,241 +15,1558 @@ Comment3 ""
 Comment4 ""
 $EndDescr
 $Comp
-L Transistor_BJT:BC337 Q1
+L Transistor_BJT:BC337 QDA0
 U 1 1 5E28C7E6
-P 5150 3050
-F 0 "Q1" H 5341 3096 50  0000 L CNN
-F 1 "BC337" H 5341 3005 50  0000 L CNN
-F 2 "Package_TO_SOT_THT:TO-92_Inline" H 5350 2975 50  0001 L CIN
-F 3 "http://www.nxp.com/documents/data_sheet/BC817_BC817W_BC337.pdf" H 5150 3050 50  0001 L CNN
-	1    5150 3050
+P 3800 3000
+F 0 "QDA0" H 3991 3046 50  0000 L CNN
+F 1 "BC337" H 3991 2955 50  0000 L CNN
+F 2 "Package_TO_SOT_THT:TO-92_Inline" H 4000 2925 50  0001 L CIN
+F 3 "http://www.nxp.com/documents/data_sheet/BC817_BC817W_BC337.pdf" H 3800 3000 50  0001 L CNN
+	1    3800 3000
 	1    0    0    -1  
 $EndComp
 $Comp
-L Transistor_BJT:BC337 Q2
+L Transistor_BJT:BC337 QDB0
 U 1 1 5E28C87E
-P 5550 3350
-F 0 "Q2" H 5741 3396 50  0000 L CNN
-F 1 "BC337" H 5741 3305 50  0000 L CNN
-F 2 "Package_TO_SOT_THT:TO-92_Inline" H 5750 3275 50  0001 L CIN
-F 3 "http://www.nxp.com/documents/data_sheet/BC817_BC817W_BC337.pdf" H 5550 3350 50  0001 L CNN
-	1    5550 3350
+P 4200 3300
+F 0 "QDB0" H 4391 3346 50  0000 L CNN
+F 1 "BC337" H 4391 3255 50  0000 L CNN
+F 2 "Package_TO_SOT_THT:TO-92_Inline" H 4400 3225 50  0001 L CIN
+F 3 "http://www.nxp.com/documents/data_sheet/BC817_BC817W_BC337.pdf" H 4200 3300 50  0001 L CNN
+	1    4200 3300
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:VCC #PWR06
 U 1 1 5E28C915
-P 5650 1900
-F 0 "#PWR06" H 5650 1750 50  0001 C CNN
-F 1 "VCC" H 5667 2073 50  0000 C CNN
-F 2 "" H 5650 1900 50  0001 C CNN
-F 3 "" H 5650 1900 50  0001 C CNN
-	1    5650 1900
+P 4300 2350
+F 0 "#PWR06" H 4300 2200 50  0001 C CNN
+F 1 "VCC" H 4317 2523 50  0000 C CNN
+F 2 "" H 4300 2350 50  0001 C CNN
+F 3 "" H 4300 2350 50  0001 C CNN
+	1    4300 2350
 	1    0    0    -1  
 $EndComp
 $Comp
-L Device:R R4
+L Device:R RPU0
 U 1 1 5E28C98C
-P 5650 2300
-F 0 "R4" H 5720 2346 50  0000 L CNN
-F 1 "100k" H 5720 2255 50  0000 L CNN
-F 2 "" V 5580 2300 50  0001 C CNN
-F 3 "~" H 5650 2300 50  0001 C CNN
-	1    5650 2300
+P 4300 2550
+F 0 "RPU0" H 4370 2596 50  0000 L CNN
+F 1 "100k" H 4370 2505 50  0000 L CNN
+F 2 "" V 4230 2550 50  0001 C CNN
+F 3 "~" H 4300 2550 50  0001 C CNN
+	1    4300 2550
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	5650 2150 5650 1900
+	4300 2400 4300 2350
 Wire Wire Line
-	5350 3350 5250 3350
+	4000 3300 3900 3300
 Wire Wire Line
-	5250 3350 5250 3250
+	3900 3300 3900 3200
 Wire Wire Line
-	5650 3150 5650 2800
+	4300 3100 4300 2900
 Wire Wire Line
-	5250 2850 5250 2800
+	3900 2800 3900 2750
 Wire Wire Line
-	5250 2800 5650 2800
-Connection ~ 5650 2800
+	3900 2750 4300 2750
+Connection ~ 4300 2750
 Wire Wire Line
-	5650 2800 5650 2450
+	4300 2750 4300 2700
 $Comp
 L power:GND #PWR07
 U 1 1 5E28CB2A
-P 5650 3650
-F 0 "#PWR07" H 5650 3400 50  0001 C CNN
-F 1 "GND" H 5655 3477 50  0000 C CNN
-F 2 "" H 5650 3650 50  0001 C CNN
-F 3 "" H 5650 3650 50  0001 C CNN
-	1    5650 3650
+P 4300 3600
+F 0 "#PWR07" H 4300 3350 50  0001 C CNN
+F 1 "GND" H 4305 3427 50  0000 C CNN
+F 2 "" H 4300 3600 50  0001 C CNN
+F 3 "" H 4300 3600 50  0001 C CNN
+	1    4300 3600
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	5650 3650 5650 3550
+	4300 3600 4300 3500
 $Comp
-L Connector_Generic:Conn_02x05_Odd_Even J1
+L Connector_Generic:Conn_02x05_Odd_Even JPI1
 U 1 1 5E28CCD4
-P 1700 3700
-F 0 "J1" V 1704 3980 50  0000 L CNN
-F 1 "Conn_02x05_Odd_Even" V 1795 3980 50  0000 L CNN
-F 2 "" H 1700 3700 50  0001 C CNN
-F 3 "~" H 1700 3700 50  0001 C CNN
-	1    1700 3700
+P 1700 2900
+F 0 "JPI1" V 1704 3180 50  0000 L CNN
+F 1 "Conn_Pi" V 1795 3180 50  0000 L CNN
+F 2 "" H 1700 2900 50  0001 C CNN
+F 3 "~" H 1700 2900 50  0001 C CNN
+	1    1700 2900
 	0    1    1    0   
 $EndComp
 $Comp
 L power:VCC #PWR04
 U 1 1 5E28CE08
-P 1900 4050
-F 0 "#PWR04" H 1900 3900 50  0001 C CNN
-F 1 "VCC" H 1918 4223 50  0000 C CNN
-F 2 "" H 1900 4050 50  0001 C CNN
-F 3 "" H 1900 4050 50  0001 C CNN
-	1    1900 4050
+P 1900 3250
+F 0 "#PWR04" H 1900 3100 50  0001 C CNN
+F 1 "VCC" H 1918 3423 50  0000 C CNN
+F 2 "" H 1900 3250 50  0001 C CNN
+F 3 "" H 1900 3250 50  0001 C CNN
+	1    1900 3250
 	-1   0    0    1   
 $EndComp
 Wire Wire Line
-	1900 4050 1900 4000
+	1900 3250 1900 3200
 Wire Wire Line
-	1900 4050 1800 4050
+	1900 3250 1800 3250
 Wire Wire Line
-	1800 4050 1800 4000
-Connection ~ 1900 4050
+	1800 3250 1800 3200
+Connection ~ 1900 3250
 $Comp
 L power:GND #PWR03
 U 1 1 5E28CF97
-P 1700 4050
-F 0 "#PWR03" H 1700 3800 50  0001 C CNN
-F 1 "GND" H 1705 3877 50  0000 C CNN
-F 2 "" H 1700 4050 50  0001 C CNN
-F 3 "" H 1700 4050 50  0001 C CNN
-	1    1700 4050
+P 1700 3250
+F 0 "#PWR03" H 1700 3000 50  0001 C CNN
+F 1 "GND" H 1750 3250 50  0000 C CNN
+F 2 "" H 1700 3250 50  0001 C CNN
+F 3 "" H 1700 3250 50  0001 C CNN
+	1    1700 3250
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	1700 4050 1700 4000
+	1700 3250 1700 3200
 $Comp
 L power:GND #PWR02
 U 1 1 5E28D094
-P 1500 3450
-F 0 "#PWR02" H 1500 3200 50  0001 C CNN
-F 1 "GND" H 1505 3277 50  0000 C CNN
-F 2 "" H 1500 3450 50  0001 C CNN
-F 3 "" H 1500 3450 50  0001 C CNN
-	1    1500 3450
+P 1500 2650
+F 0 "#PWR02" H 1500 2400 50  0001 C CNN
+F 1 "GND" H 1505 2477 50  0000 C CNN
+F 2 "" H 1500 2650 50  0001 C CNN
+F 3 "" H 1500 2650 50  0001 C CNN
+	1    1500 2650
 	-1   0    0    1   
 $EndComp
 Wire Wire Line
-	1500 3500 1500 3450
+	1500 2700 1500 2650
 $Comp
 L Device:R R1
 U 1 1 5E28D1DB
-P 950 3900
-F 0 "R1" H 1020 3946 50  0000 L CNN
-F 1 "1000" H 1020 3855 50  0000 L CNN
-F 2 "" V 880 3900 50  0001 C CNN
-F 3 "~" H 950 3900 50  0001 C CNN
-	1    950  3900
+P 950 3100
+F 0 "R1" H 1020 3146 50  0000 L CNN
+F 1 "1000" H 1020 3055 50  0000 L CNN
+F 2 "" V 880 3100 50  0001 C CNN
+F 3 "~" H 950 3100 50  0001 C CNN
+	1    950  3100
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:R R2
 U 1 1 5E28D27B
-P 950 4300
-F 0 "R2" H 1020 4346 50  0000 L CNN
-F 1 "2200" H 1020 4255 50  0000 L CNN
-F 2 "" V 880 4300 50  0001 C CNN
-F 3 "~" H 950 4300 50  0001 C CNN
-	1    950  4300
+P 950 3500
+F 0 "R2" H 1020 3546 50  0000 L CNN
+F 1 "2200" H 1020 3455 50  0000 L CNN
+F 2 "" V 880 3500 50  0001 C CNN
+F 3 "~" H 950 3500 50  0001 C CNN
+	1    950  3500
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	950  4150 950  4100
+	950  3350 950  3300
 Wire Wire Line
-	950  4100 1500 4100
+	950  3300 1500 3300
 Wire Wire Line
-	1500 4100 1500 4000
-Connection ~ 950  4100
+	1500 3300 1500 3200
+Connection ~ 950  3300
 Wire Wire Line
-	950  4100 950  4050
+	950  3300 950  3250
 $Comp
 L power:GND #PWR01
 U 1 1 5E28D57D
-P 950 4500
-F 0 "#PWR01" H 950 4250 50  0001 C CNN
-F 1 "GND" H 955 4327 50  0000 C CNN
-F 2 "" H 950 4500 50  0001 C CNN
-F 3 "" H 950 4500 50  0001 C CNN
-	1    950  4500
+P 950 3700
+F 0 "#PWR01" H 950 3450 50  0001 C CNN
+F 1 "GND" H 955 3527 50  0000 C CNN
+F 2 "" H 950 3700 50  0001 C CNN
+F 3 "" H 950 3700 50  0001 C CNN
+	1    950  3700
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	950  4500 950  4450
-Text GLabel 950  3700 1    50   Input ~ 0
+	950  3700 950  3650
+Text GLabel 950  2900 1    50   Input ~ 0
 TX_ARDUINO
 Wire Wire Line
-	950  3700 950  3750
+	950  2900 950  2950
 $Comp
 L power:VCC #PWR05
 U 1 1 5E28DB6A
-P 4450 1200
-F 0 "#PWR05" H 4450 1050 50  0001 C CNN
-F 1 "VCC" H 4467 1373 50  0000 C CNN
-F 2 "" H 4450 1200 50  0001 C CNN
-F 3 "" H 4450 1200 50  0001 C CNN
-	1    4450 1200
+P 3250 6200
+F 0 "#PWR05" H 3250 6050 50  0001 C CNN
+F 1 "VCC" H 3267 6373 50  0000 C CNN
+F 2 "" H 3250 6200 50  0001 C CNN
+F 3 "" H 3250 6200 50  0001 C CNN
+	1    3250 6200
 	1    0    0    -1  
 $EndComp
 $Comp
-L Connector_Generic:Conn_01x01 J2
+L Connector_Generic:Conn_01x01 J8
 U 1 1 5E28DC81
-P 4450 1900
-F 0 "J2" V 4323 1980 50  0000 L CNN
-F 1 "Comm" V 4414 1980 50  0000 L CNN
-F 2 "" H 4450 1900 50  0001 C CNN
-F 3 "~" H 4450 1900 50  0001 C CNN
-	1    4450 1900
+P 3250 6900
+F 0 "J8" V 3123 6980 50  0000 L CNN
+F 1 "Comm" V 3214 6980 50  0000 L CNN
+F 2 "" H 3250 6900 50  0001 C CNN
+F 3 "~" H 3250 6900 50  0001 C CNN
+	1    3250 6900
 	0    1    1    0   
 $EndComp
 Wire Wire Line
-	4450 1300 4450 1200
+	3250 6300 3250 6200
 $Comp
 L Device:R R3
 U 1 1 5E28E00E
-P 4450 1450
-F 0 "R3" H 4520 1496 50  0000 L CNN
-F 1 "1k" H 4520 1405 50  0000 L CNN
-F 2 "" V 4380 1450 50  0001 C CNN
-F 3 "~" H 4450 1450 50  0001 C CNN
-	1    4450 1450
+P 3250 6450
+F 0 "R3" H 3320 6496 50  0000 L CNN
+F 1 "1k" H 3320 6405 50  0000 L CNN
+F 2 "" V 3180 6450 50  0001 C CNN
+F 3 "~" H 3250 6450 50  0001 C CNN
+	1    3250 6450
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	4450 1700 4450 1600
+	3250 6700 3250 6600
 $Comp
-L Device:R R?
+L Device:R RT0
 U 1 1 5E28E52C
-P 4700 3050
-F 0 "R?" V 4493 3050 50  0000 C CNN
-F 1 "1k" V 4584 3050 50  0000 C CNN
-F 2 "" V 4630 3050 50  0001 C CNN
-F 3 "~" H 4700 3050 50  0001 C CNN
-	1    4700 3050
+P 3400 3000
+F 0 "RT0" V 3193 3000 50  0000 C CNN
+F 1 "1k" V 3284 3000 50  0000 C CNN
+F 2 "" V 3330 3000 50  0001 C CNN
+F 3 "~" H 3400 3000 50  0001 C CNN
+	1    3400 3000
 	0    1    1    0   
 $EndComp
-Wire Wire Line
-	4950 3050 4850 3050
 $Comp
-L Connector_Generic:Conn_01x01 J?
+L Connector_Generic:Conn_01x01 J0
 U 1 1 5E28E8A3
-P 4250 3050
-F 0 "J?" H 4170 2825 50  0000 C CNN
-F 1 "Comm" H 4170 2916 50  0000 C CNN
-F 2 "" H 4250 3050 50  0001 C CNN
-F 3 "~" H 4250 3050 50  0001 C CNN
-	1    4250 3050
+P 3000 3000
+F 0 "J0" H 2920 2775 50  0000 C CNN
+F 1 "Conn_Touch" H 2920 2866 50  0000 C CNN
+F 2 "" H 3000 3000 50  0001 C CNN
+F 3 "~" H 3000 3000 50  0001 C CNN
+	1    3000 3000
 	-1   0    0    1   
 $EndComp
+$Comp
+L Diode:BAV99 D0
+U 2 1 5E2D8D32
+P 3600 3250
+F 0 "D0" V 3554 3328 50  0000 L CNN
+F 1 "BAV99" V 3645 3328 50  0000 L CNN
+F 2 "Package_TO_SOT_SMD:SOT-23" H 3600 3100 50  0001 C CNN
+F 3 "www.nxp.com/documents/data_sheet/BAV99_SER.pdf" H 3600 3350 50  0001 C CNN
+	2    3600 3250
+	0    1    1    0   
+$EndComp
+$Comp
+L Diode:BAV99 D0
+U 1 1 5E2D908D
+P 3600 2600
+F 0 "D0" V 3554 2678 50  0000 L CNN
+F 1 "BAV99" V 3645 2678 50  0000 L CNN
+F 2 "Package_TO_SOT_SMD:SOT-23" H 3600 2450 50  0001 C CNN
+F 3 "www.nxp.com/documents/data_sheet/BAV99_SER.pdf" H 3600 2700 50  0001 C CNN
+	1    3600 2600
+	0    1    1    0   
+$EndComp
+$Comp
+L power:VCC #PWR011
+U 1 1 5E2D9ADE
+P 3600 2350
+F 0 "#PWR011" H 3600 2200 50  0001 C CNN
+F 1 "VCC" H 3617 2523 50  0000 C CNN
+F 2 "" H 3600 2350 50  0001 C CNN
+F 3 "" H 3600 2350 50  0001 C CNN
+	1    3600 2350
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR012
+U 1 1 5E2D9B01
+P 3600 3600
+F 0 "#PWR012" H 3600 3350 50  0001 C CNN
+F 1 "GND" H 3605 3427 50  0000 C CNN
+F 2 "" H 3600 3600 50  0001 C CNN
+F 3 "" H 3600 3600 50  0001 C CNN
+	1    3600 3600
+	1    0    0    -1  
+$EndComp
 Wire Wire Line
-	4550 3050 4450 3050
+	3600 3600 3600 3400
+Wire Wire Line
+	3250 3000 3200 3000
+Wire Wire Line
+	3600 2450 3600 2350
+$Comp
+L MCU_Module:Arduino_Nano_v3.x A1
+U 1 1 5E2DE164
+P 1550 5650
+F 0 "A1" H 1550 4564 50  0000 C CNN
+F 1 "Arduino_Nano_v3.x" H 1550 4473 50  0000 C CNN
+F 2 "Module:Arduino_Nano" H 1700 4700 50  0001 L CNN
+F 3 "http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf" H 1550 4650 50  0001 C CNN
+	1    1550 5650
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR08
+U 1 1 5E2DE44C
+P 1550 6900
+F 0 "#PWR08" H 1550 6650 50  0001 C CNN
+F 1 "GND" H 1555 6727 50  0000 C CNN
+F 2 "" H 1550 6900 50  0001 C CNN
+F 3 "" H 1550 6900 50  0001 C CNN
+	1    1550 6900
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	1550 6900 1550 6650
+$Comp
+L power:GND #PWR09
+U 1 1 5E2DE965
+P 1650 6900
+F 0 "#PWR09" H 1650 6650 50  0001 C CNN
+F 1 "GND" H 1655 6727 50  0000 C CNN
+F 2 "" H 1650 6900 50  0001 C CNN
+F 3 "" H 1650 6900 50  0001 C CNN
+	1    1650 6900
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	1650 6900 1650 6650
+$Comp
+L power:VCC #PWR010
+U 1 1 5E2DF0A6
+P 1750 4600
+F 0 "#PWR010" H 1750 4450 50  0001 C CNN
+F 1 "VCC" H 1768 4773 50  0000 C CNN
+F 2 "" H 1750 4600 50  0001 C CNN
+F 3 "" H 1750 4600 50  0001 C CNN
+	1    1750 4600
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	1750 4650 1750 4600
+Text GLabel 2050 5650 2    50   Input ~ 0
+A0
+Text GLabel 2050 5750 2    50   Input ~ 0
+A1
+Text GLabel 2050 5850 2    50   Input ~ 0
+A2
+Text GLabel 2050 5950 2    50   Input ~ 0
+A3
+Text GLabel 2050 6050 2    50   Input ~ 0
+A4
+Text GLabel 2050 6150 2    50   Input ~ 0
+A5
+Text GLabel 2050 6250 2    50   Input ~ 0
+A6
+Text GLabel 2050 6350 2    50   Input ~ 0
+A7
+Text GLabel 4400 2900 2    50   Input ~ 0
+A0
+Wire Wire Line
+	4400 2900 4300 2900
+Connection ~ 4300 2900
+Wire Wire Line
+	4300 2900 4300 2750
+Wire Notes Line
+	2900 2150 4650 2150
+Wire Notes Line
+	4650 2150 4650 3800
+Wire Notes Line
+	4650 3800 2900 3800
+Wire Notes Line
+	2900 3800 2900 2150
+$Comp
+L Transistor_BJT:BC337 QDA1
+U 1 1 5E35126A
+P 5600 3000
+F 0 "QDA1" H 5791 3046 50  0000 L CNN
+F 1 "BC337" H 5791 2955 50  0000 L CNN
+F 2 "Package_TO_SOT_THT:TO-92_Inline" H 5800 2925 50  0001 L CIN
+F 3 "http://www.nxp.com/documents/data_sheet/BC817_BC817W_BC337.pdf" H 5600 3000 50  0001 L CNN
+	1    5600 3000
+	1    0    0    -1  
+$EndComp
+$Comp
+L Transistor_BJT:BC337 QDB1
+U 1 1 5E351270
+P 6000 3300
+F 0 "QDB1" H 6191 3346 50  0000 L CNN
+F 1 "BC337" H 6191 3255 50  0000 L CNN
+F 2 "Package_TO_SOT_THT:TO-92_Inline" H 6200 3225 50  0001 L CIN
+F 3 "http://www.nxp.com/documents/data_sheet/BC817_BC817W_BC337.pdf" H 6000 3300 50  0001 L CNN
+	1    6000 3300
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:VCC #PWR015
+U 1 1 5E351276
+P 6100 2350
+F 0 "#PWR015" H 6100 2200 50  0001 C CNN
+F 1 "VCC" H 6117 2523 50  0000 C CNN
+F 2 "" H 6100 2350 50  0001 C CNN
+F 3 "" H 6100 2350 50  0001 C CNN
+	1    6100 2350
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:R RPU1
+U 1 1 5E35127C
+P 6100 2550
+F 0 "RPU1" H 6170 2596 50  0000 L CNN
+F 1 "100k" H 6170 2505 50  0000 L CNN
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