Addressed some of my points

extras/KiCad/QC2Control-cache.lib

@@ -0,0 +1,58 @@
+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# D
+#
+DEF D D 0 40 N N 1 F N
+F0 "D" 0 100 50 H V C CNN
+F1 "D" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ TO-???*
+ *SingleDiode
+ *_Diode_*
+ *SingleDiode*
+ D_*
+$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
+#
+# GND
+#
+DEF GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "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
+#
+# R
+#
+DEF R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "R" 0 0 50 V V C CNN
+F2 "" -70 0 50 V I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ R_*
+ R_*
+$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
+#
+#End Library

extras/KiCad/QC2Control.bak

@@ -0,0 +1,214 @@
+EESchema Schematic File Version 2
+LIBS:power
+LIBS:device
+LIBS:transistors
+LIBS:conn
+LIBS:linear
+LIBS:regul
+LIBS:74xx
+LIBS:cmos4000
+LIBS:adc-dac
+LIBS:memory
+LIBS:xilinx
+LIBS:microcontrollers
+LIBS:dsp
+LIBS:microchip
+LIBS:analog_switches
+LIBS:motorola
+LIBS:texas
+LIBS:intel
+LIBS:audio
+LIBS:interface
+LIBS:digital-audio
+LIBS:philips
+LIBS:display
+LIBS:cypress
+LIBS:siliconi
+LIBS:opto
+LIBS:atmel
+LIBS:contrib
+LIBS:valves
+EELAYER 25 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L R R1
+U 1 1 592EC466
+P 2650 2250
+F 0 "R1" V 2730 2250 50  0000 C CNN
+F 1 "2k2" V 2650 2250 50  0000 C CNN
+F 2 "" V 2580 2250 50  0001 C CNN
+F 3 "" H 2650 2250 50  0001 C CNN
+	1    2650 2250
+	1    0    0    -1  
+$EndComp
+$Comp
+L R R2
+U 1 1 592EC5AA
+P 2650 2750
+F 0 "R2" V 2730 2750 50  0000 C CNN
+F 1 "1k" V 2650 2750 50  0000 C CNN
+F 2 "" V 2580 2750 50  0001 C CNN
+F 3 "" H 2650 2750 50  0001 C CNN
+	1    2650 2750
+	1    0    0    -1  
+$EndComp
+$Comp
+L R R3
+U 1 1 592EC5D2
+P 3950 2250
+F 0 "R3" V 4030 2250 50  0000 C CNN
+F 1 "2k2" V 3950 2250 50  0000 C CNN
+F 2 "" V 3880 2250 50  0001 C CNN
+F 3 "" H 3950 2250 50  0001 C CNN
+	1    3950 2250
+	1    0    0    -1  
+$EndComp
+$Comp
+L R R4
+U 1 1 592EC601
+P 3950 2750
+F 0 "R4" V 4030 2750 50  0000 C CNN
+F 1 "1k" V 3950 2750 50  0000 C CNN
+F 2 "" V 3880 2750 50  0001 C CNN
+F 3 "" H 3950 2750 50  0001 C CNN
+	1    3950 2750
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2650 2100 2650 1750
+Wire Wire Line
+	2650 1750 4600 1750
+Text Label 4600 1750 2    60   ~ 0
+Arduino_Vcc
+Text Label 4600 2050 2    60   ~ 0
+Arduino_DmPin
+Wire Wire Line
+	3950 2100 3950 2050
+Wire Wire Line
+	3950 2050 4600 2050
+Text Label 4600 1900 2    60   ~ 0
+Arduino_DpPin
+Wire Wire Line
+	2650 2400 2650 2500
+Wire Wire Line
+	2650 2500 2650 2600
+Connection ~ 2650 2500
+Wire Wire Line
+	2650 2900 2650 3000
+Wire Wire Line
+	2300 3000 2650 3000
+Wire Wire Line
+	2650 3000 3300 3000
+Wire Wire Line
+	3300 3000 3950 3000
+Wire Wire Line
+	3950 3000 4600 3000
+Wire Wire Line
+	3950 3000 3950 2900
+$Comp
+L GND #PWR2
+U 1 1 592EC6F3
+P 3300 3050
+F 0 "#PWR2" H 3300 2800 50  0001 C CNN
+F 1 "GND" H 3300 2900 50  0000 C CNN
+F 2 "" H 3300 3050 50  0001 C CNN
+F 3 "" H 3300 3050 50  0001 C CNN
+	1    3300 3050
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3300 3000 3300 3050
+Connection ~ 3300 3000
+Text Label 2300 2500 0    60   ~ 0
+Data+
+Wire Wire Line
+	3950 2400 3950 2500
+Wire Wire Line
+	3950 2500 3950 2600
+Text Label 3600 2500 0    60   ~ 0
+Data-
+Wire Wire Line
+	3600 2500 3950 2500
+Connection ~ 3950 2500
+Text Label 2300 3000 0    60   ~ 0
+GND
+Text Label 4600 3000 2    60   ~ 0
+Arduino_GND
+Text Label 2300 1400 0    60   ~ 0
+Vbus
+Wire Wire Line
+	2300 1400 3050 1400
+Wire Wire Line
+	3350 1400 3450 1400
+Wire Wire Line
+	3750 1400 4600 1400
+Text Label 4600 1400 2    60   ~ 0
+Arduino_RAW/Vin
+$Comp
+L D D1
+U 1 1 592ECD42
+P 3200 1400
+F 0 "D1" H 3200 1500 50  0000 C CNN
+F 1 "1N4148" H 3200 1300 50  0000 C CNN
+F 2 "" H 3200 1400 50  0001 C CNN
+F 3 "" H 3200 1400 50  0001 C CNN
+	1    3200 1400
+	-1   0    0    1   
+$EndComp
+$Comp
+L D D2
+U 1 1 592ECDA8
+P 3600 1400
+F 0 "D2" H 3600 1500 50  0000 C CNN
+F 1 "1N4148" H 3600 1300 50  0000 C CNN
+F 2 "" H 3600 1400 50  0001 C CNN
+F 3 "" H 3600 1400 50  0001 C CNN
+	1    3600 1400
+	-1   0    0    1   
+$EndComp
+Wire Notes Line
+	3000 1550 3800 1550
+Wire Notes Line
+	3800 1550 3800 1200
+Wire Notes Line
+	3800 1200 3000 1200
+Wire Notes Line
+	3000 1200 3000 1550
+Text Notes 3000 1200 0    50   ~ 0
+Extra protection
+$Comp
+L R R?
+U 1 1 592F13A9
+P 2900 2500
+F 0 "R?" V 2980 2500 50  0000 C CNN
+F 1 "680R" V 2900 2500 50  0000 C CNN
+F 2 "" V 2830 2500 50  0001 C CNN
+F 3 "" H 2900 2500 50  0001 C CNN
+	1    2900 2500
+	0    1    1    0   
+$EndComp
+Wire Wire Line
+	2300 2500 2650 2500
+Wire Wire Line
+	2650 2500 2750 2500
+Wire Wire Line
+	3050 2500 3350 2500
+Wire Wire Line
+	3350 2500 3350 1900
+Wire Wire Line
+	3350 1900 4600 1900
+Connection ~ 3950 3000
+Connection ~ 2650 3000
+$EndSCHEMATC

extras/KiCad/QC2Control.kicad_pcb

@@ -0,0 +1 @@
+(kicad_pcb (version 4) (host kicad "dummy file") )

extras/KiCad/QC2Control.pro

@@ -0,0 +1,60 @@
+update=31-5-2017 15:08:33
+version=1
+last_client=kicad
+[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]
+LibName1=power
+LibName2=device
+LibName3=transistors
+LibName4=conn
+LibName5=linear
+LibName6=regul
+LibName7=74xx
+LibName8=cmos4000
+LibName9=adc-dac
+LibName10=memory
+LibName11=xilinx
+LibName12=microcontrollers
+LibName13=dsp
+LibName14=microchip
+LibName15=analog_switches
+LibName16=motorola
+LibName17=texas
+LibName18=intel
+LibName19=audio
+LibName20=interface
+LibName21=digital-audio
+LibName22=philips
+LibName23=display
+LibName24=cypress
+LibName25=siliconi
+LibName26=opto
+LibName27=atmel
+LibName28=contrib
+LibName29=valves
+[general]
+version=1