Connector and pull down resistors

* Changed back to USB-B connector.
* Changed value of pull down resistors to 1k.

3 files changed, 167 insertions, 210 deletions

diff --git a/kicad/catahack-cache.lib b/kicad/catahack-cache.lib
index 8bdcca7..3729b70 100644
--- a/kicad/catahack-cache.lib
+++ b/kicad/catahack-cache.lib
@@ -173,61 +173,36 @@ X Pin_6 6 300 100 150 L 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
-# Connector_USB_C_Receptacle_USB2.0
+# Connector_USB_B
 #
-DEF Connector_USB_C_Receptacle_USB2.0 J 0 40 Y Y 1 F N
-F0 "J" -400 750 50 H V L CNN
-F1 "Connector_USB_C_Receptacle_USB2.0" 750 750 50 H V R CNN
-F2 "" 150 0 50 H I C CNN
-F3 "" 150 0 50 H I C CNN
+DEF Connector_USB_B J 0 40 Y Y 1 F N
+F0 "J" -200 450 50 H V L CNN
+F1 "Connector_USB_B" -200 350 50 H V L CNN
+F2 "" 150 -50 50 H I C CNN
+F3 "" 150 -50 50 H I C CNN
 $FPLIST
- USB*C*Receptacle*
+ USB*
 $ENDFPLIST
 DRAW
-A -275 -150 75 -1799 -1 0 1 20 N -350 -150 -200 -150
-A -275 -150 25 -1799 -1 0 1 10 N -300 -150 -250 -150
-A -275 -150 25 -1799 -1 0 1 10 F -300 -150 -250 -150
-A -275 150 25 1 1799 0 1 10 F -250 150 -300 150
-A -275 150 25 1 1799 0 1 10 N -250 150 -300 150
-A -275 150 75 1 1799 0 1 20 N -200 150 -350 150
-C -100 45 25 0 1 10 F
-C 0 -230 50 0 1 0 F
-S -10 -700 10 -660 0 0 0 N
-S 400 -590 360 -610 0 0 0 N
-S 400 -490 360 -510 0 0 0 N
-S 400 -190 360 -210 0 0 0 N
-S 400 -90 360 -110 0 0 0 N
-S 400 10 360 -10 0 0 0 N
-S 400 110 360 90 0 0 0 N
-S 400 310 360 290 0 0 0 N
-S 400 410 360 390 0 0 0 N
-S 400 610 360 590 0 0 0 N
-S -400 700 400 -700 0 1 10 f
-S -300 -150 -250 150 0 1 10 F
-S 75 70 125 120 0 1 10 F
-P 2 0 1 20 -350 -150 -350 150 N
-P 2 0 1 20 -200 150 -200 -150 N
-P 2 0 1 20 0 -230 0 170 N
-P 3 0 1 20 0 -130 -100 -30 -100 20 N
-P 3 0 1 20 0 -80 100 20 100 70 N
-P 4 0 1 10 -50 170 0 270 50 170 -50 170 F
-X GND A1 0 -900 200 U 50 50 1 1 W
-X GND A12 0 -900 200 U 50 50 1 1 P N
-X VBUS A4 600 600 200 L 50 50 1 1 W
-X CC1 A5 600 400 200 L 50 50 1 1 B
-X D+ A6 600 -100 200 L 50 50 1 1 B
-X D- A7 600 100 200 L 50 50 1 1 B
-X SBU1 A8 600 -500 200 L 50 50 1 1 B
-X VBUS A9 600 600 200 L 50 50 1 1 P N
-X GND B1 0 -900 200 U 50 50 1 1 P N
-X GND B12 0 -900 200 U 50 50 1 1 P N
-X VBUS B4 600 600 200 L 50 50 1 1 P N
-X CC2 B5 600 300 200 L 50 50 1 1 B
-X D+ B6 600 -200 200 L 50 50 1 1 B
-X D- B7 600 0 200 L 50 50 1 1 B
-X SBU2 B8 600 -600 200 L 50 50 1 1 B
-X VBUS B9 600 600 200 L 50 50 1 1 P N
-X SHIELD S1 -300 -900 200 U 50 50 1 1 P
+C -150 85 25 0 1 10 F
+C -25 135 15 0 1 10 F
+S -200 -300 200 300 0 1 10 f
+S -150 220 -100 180 0 1 0 F
+S -5 -300 5 -270 0 1 0 N
+S 10 50 -20 20 0 1 10 F
+S 200 -105 170 -95 0 1 0 N
+S 200 -5 170 5 0 1 0 N
+S 200 195 170 205 0 1 0 N
+P 2 0 1 10 -75 85 25 85 N
+P 4 0 1 10 -125 85 -100 85 -50 135 -25 135 N
+P 4 0 1 10 -100 85 -75 85 -50 35 0 35 N
+P 4 0 1 10 25 110 25 60 75 85 25 110 F
+P 7 0 1 0 -160 170 -90 170 -90 225 -105 240 -145 240 -160 225 -160 170 N
+X VBUS 1 300 200 100 L 50 50 1 1 w
+X D- 2 300 -100 100 L 50 50 1 1 P
+X D+ 3 300 0 100 L 50 50 1 1 P
+X GND 4 0 -400 100 U 50 50 1 1 w
+X Shield 5 -100 -400 100 U 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
diff --git a/kicad/data.sch b/kicad/data.sch
index a22b783..be303a7 100644
--- a/kicad/data.sch
+++ b/kicad/data.sch
@@ -13,110 +13,110 @@ Comment2 "UART interface"
 Comment3 ""
 Comment4 ""
 $EndDescr
-Text GLabel 1900 1800 2    50   Input ~ 0
+Text GLabel 1350 1650 2    50   Input ~ 0
 USB_D-
 $Comp
 L power:GND #PWR?
 U 1 1 5FAB43A9
-P 1100 2700
+P 950 2050
 AR Path="/5FAB43A9" Ref="#PWR?"  Part="1" 
 AR Path="/5F9E7705/5FAB43A9" Ref="#PWR03"  Part="1" 
-F 0 "#PWR03" H 1100 2450 50  0001 C CNN
-F 1 "GND" H 1105 2527 50  0000 C CNN
-F 2 "" H 1100 2700 50  0001 C CNN
-F 3 "" H 1100 2700 50  0001 C CNN
-	1    1100 2700
+F 0 "#PWR03" H 950 1800 50  0001 C CNN
+F 1 "GND" H 955 1877 50  0000 C CNN
+F 2 "" H 950 2050 50  0001 C CNN
+F 3 "" H 950 2050 50  0001 C CNN
+	1    950  2050
 	1    0    0    -1  
 $EndComp
-Text GLabel 1900 1900 2    50   Input ~ 0
+Text GLabel 1350 1750 2    50   Input ~ 0
 USB_D+
 $Comp
 L Power_Protection:SN65220 U?
 U 1 1 5FABC8C9
-P 1750 3200
+P 1750 3000
 AR Path="/5FABC8C9" Ref="U?"  Part="1" 
 AR Path="/5F9E7705/5FABC8C9" Ref="U3"  Part="1" 
-F 0 "U3" H 1750 3425 50  0000 C CNN
-F 1 "SN65220" H 1750 3334 50  0000 C CNN
-F 2 "Package_TO_SOT_SMD:SOT-23-6" H 2100 3050 50  0001 L CNN
-F 3 "http://www.ti.com/lit/ds/symlink/sn65220.pdf" H 1750 3350 50  0001 C CNN
-	1    1750 3200
+F 0 "U3" H 1750 3225 50  0000 C CNN
+F 1 "SN65220" H 1750 3134 50  0000 C CNN
+F 2 "Package_TO_SOT_SMD:SOT-23-6" H 2100 2850 50  0001 L CNN
+F 3 "http://www.ti.com/lit/ds/symlink/sn65220.pdf" H 1750 3150 50  0001 C CNN
+	1    1750 3000
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 5FABC8CF
-P 1650 3500
+P 1650 3300
 AR Path="/5FABC8CF" Ref="#PWR?"  Part="1" 
 AR Path="/5F9E7705/5FABC8CF" Ref="#PWR04"  Part="1" 
-F 0 "#PWR04" H 1650 3250 50  0001 C CNN
-F 1 "GND" H 1655 3327 50  0000 C CNN
-F 2 "" H 1650 3500 50  0001 C CNN
-F 3 "" H 1650 3500 50  0001 C CNN
-	1    1650 3500
+F 0 "#PWR04" H 1650 3050 50  0001 C CNN
+F 1 "GND" H 1655 3127 50  0000 C CNN
+F 2 "" H 1650 3300 50  0001 C CNN
+F 3 "" H 1650 3300 50  0001 C CNN
+	1    1650 3300
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 5FABC8D5
-P 1850 3500
+P 1850 3300
 AR Path="/5FABC8D5" Ref="#PWR?"  Part="1" 
 AR Path="/5F9E7705/5FABC8D5" Ref="#PWR06"  Part="1" 
-F 0 "#PWR06" H 1850 3250 50  0001 C CNN
-F 1 "GND" H 1855 3327 50  0000 C CNN
-F 2 "" H 1850 3500 50  0001 C CNN
-F 3 "" H 1850 3500 50  0001 C CNN
-	1    1850 3500
+F 0 "#PWR06" H 1850 3050 50  0001 C CNN
+F 1 "GND" H 1855 3127 50  0000 C CNN
+F 2 "" H 1850 3300 50  0001 C CNN
+F 3 "" H 1850 3300 50  0001 C CNN
+	1    1850 3300
 	1    0    0    -1  
 $EndComp
-Text GLabel 1150 3200 0    50   Input ~ 0
+Text GLabel 1150 3000 0    50   Input ~ 0
 USB_D+
-Text GLabel 2350 3200 2    50   Input ~ 0
+Text GLabel 2350 3000 2    50   Input ~ 0
 USB_D-
-Text GLabel 1300 3950 0    50   Input ~ 0
+Text GLabel 1300 3750 0    50   Input ~ 0
 USB_D+
-Text GLabel 2200 3950 2    50   Input ~ 0
+Text GLabel 2200 3750 2    50   Input ~ 0
 USB_D-
 $Comp
 L power:GND #PWR?
 U 1 1 5FABC8DF
-P 1750 4050
+P 1750 3850
 AR Path="/5FABC8DF" Ref="#PWR?"  Part="1" 
 AR Path="/5F9E7705/5FABC8DF" Ref="#PWR05"  Part="1" 
-F 0 "#PWR05" H 1750 3800 50  0001 C CNN
-F 1 "GND" H 1755 3877 50  0000 C CNN
-F 2 "" H 1750 4050 50  0001 C CNN
-F 3 "" H 1750 4050 50  0001 C CNN
-	1    1750 4050
+F 0 "#PWR05" H 1750 3600 50  0001 C CNN
+F 1 "GND" H 1755 3677 50  0000 C CNN
+F 2 "" H 1750 3850 50  0001 C CNN
+F 3 "" H 1750 3850 50  0001 C CNN
+	1    1750 3850
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:R_Small R?
 U 1 1 5FABC8E5
-P 1550 3950
+P 1550 3750
 AR Path="/5FABC8E5" Ref="R?"  Part="1" 
 AR Path="/5F9E7705/5FABC8E5" Ref="R8"  Part="1" 
-F 0 "R8" V 1450 3950 50  0000 C CNN
-F 1 "15k" V 1650 3950 50  0000 C CNN
-F 2 "" H 1550 3950 50  0001 C CNN
-F 3 "~" H 1550 3950 50  0001 C CNN
-	1    1550 3950
+F 0 "R8" V 1450 3750 50  0000 C CNN
+F 1 "15k" V 1650 3750 50  0000 C CNN
+F 2 "" H 1550 3750 50  0001 C CNN
+F 3 "~" H 1550 3750 50  0001 C CNN
+	1    1550 3750
 	0    1    1    0   
 $EndComp
 $Comp
 L Device:R_Small R?
 U 1 1 5FABC8EB
-P 1950 3950
+P 1950 3750
 AR Path="/5FABC8EB" Ref="R?"  Part="1" 
 AR Path="/5F9E7705/5FABC8EB" Ref="R9"  Part="1" 
-F 0 "R9" V 1850 3950 50  0000 C CNN
-F 1 "15k" V 2050 3950 50  0000 C CNN
-F 2 "" H 1950 3950 50  0001 C CNN
-F 3 "~" H 1950 3950 50  0001 C CNN
-	1    1950 3950
+F 0 "R9" V 1850 3750 50  0000 C CNN
+F 1 "15k" V 2050 3750 50  0000 C CNN
+F 2 "" H 1950 3750 50  0001 C CNN
+F 3 "~" H 1950 3750 50  0001 C CNN
+	1    1950 3750
 	0    1    1    0   
 $EndComp
-Text Notes 850  4450 0    39   ~ 0
+Text Notes 850  4250 0    39   ~ 0
 * See Chapter 13.2 of SN65220 datasheet\n* See Table 3.5 of FT232R datasheet, series resistors are internal
 $Comp
 L Connector_Generic:Conn_01x02 J?
@@ -124,7 +124,7 @@ U 1 1 5FAF9339
 P 10900 1200
 AR Path="/5FAF9339" Ref="J?"  Part="1" 
 AR Path="/5F9E7705/5FAF9339" Ref="J6"  Part="1" 
-F 0 "J6" H 10980 1192 50  0000 L CNN
+F 0 "J6" H 10850 1300 50  0000 L CNN
 F 1 "XCVR_PTT" H 10750 1000 50  0000 L CNN
 F 2 "" H 10900 1200 50  0001 C CNN
 F 3 "~" H 10900 1200 50  0001 C CNN
@@ -268,77 +268,61 @@ RXLED
 Text Notes 5400 4400 0    39   ~ 0
 * See Chapter 7.1 of FT232R datasheet
 $Comp
-L Connector:USB_C_Receptacle_USB2.0 J2
-U 1 1 5FD235E4
-P 1100 1800
-F 0 "J2" H 1207 2667 50  0000 C CNN
-F 1 "USB_C" H 1207 2576 50  0000 C CNN
-F 2 "" H 1250 1800 50  0001 C CNN
-F 3 "https://www.usb.org/sites/default/files/documents/usb_type-c.zip" H 1250 1800 50  0001 C CNN
-	1    1100 1800
-	1    0    0    -1  
-$EndComp
-NoConn ~ 800  2700
-$Comp
 L Device:C_Small C?
 U 1 1 5FD78EA5
-P 2000 1350
+P 2000 1600
 AR Path="/5FD78EA5" Ref="C?"  Part="1" 
 AR Path="/5F9D7A3C/5FD78EA5" Ref="C?"  Part="1" 
 AR Path="/5F9E7705/5FD78EA5" Ref="C6"  Part="1" 
-F 0 "C6" H 1900 1400 50  0000 C CNN
-F 1 "10n" H 2100 1300 50  0000 C CNN
-F 2 "" H 2000 1350 50  0001 C CNN
-F 3 "~" H 2000 1350 50  0001 C CNN
-	1    2000 1350
+F 0 "C6" H 1900 1650 50  0000 C CNN
+F 1 "10n" H 2100 1550 50  0000 C CNN
+F 2 "" H 2000 1600 50  0001 C CNN
+F 3 "~" H 2000 1600 50  0001 C CNN
+	1    2000 1600
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 5FD78EB1
-P 2000 1500
+P 2000 1750
 AR Path="/5FD78EB1" Ref="#PWR?"  Part="1" 
 AR Path="/5F9D7A3C/5FD78EB1" Ref="#PWR?"  Part="1" 
 AR Path="/5F9E7705/5FD78EB1" Ref="#PWR09"  Part="1" 
-F 0 "#PWR09" H 2000 1250 50  0001 C CNN
-F 1 "GND" H 2000 1350 50  0000 C CNN
-F 2 "" H 2000 1500 50  0001 C CNN
-F 3 "" H 2000 1500 50  0001 C CNN
-	1    2000 1500
+F 0 "#PWR09" H 2000 1500 50  0001 C CNN
+F 1 "GND" H 2000 1600 50  0000 C CNN
+F 2 "" H 2000 1750 50  0001 C CNN
+F 3 "" H 2000 1750 50  0001 C CNN
+	1    2000 1750
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:VCC #PWR?
 U 1 1 5FD78EC1
-P 2550 1100
+P 2550 1350
 AR Path="/5FD78EC1" Ref="#PWR?"  Part="1" 
 AR Path="/5F9D7A3C/5FD78EC1" Ref="#PWR?"  Part="1" 
 AR Path="/5F9E7705/5FD78EC1" Ref="#PWR011"  Part="1" 
-F 0 "#PWR011" H 2550 950 50  0001 C CNN
-F 1 "VCC" H 2567 1273 50  0000 C CNN
-F 2 "" H 2550 1100 50  0001 C CNN
-F 3 "" H 2550 1100 50  0001 C CNN
-	1    2550 1100
+F 0 "#PWR011" H 2550 1200 50  0001 C CNN
+F 1 "VCC" H 2567 1523 50  0000 C CNN
+F 2 "" H 2550 1350 50  0001 C CNN
+F 3 "" H 2550 1350 50  0001 C CNN
+	1    2550 1350
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:Ferrite_Bead_Small FB?
 U 1 1 5FD78EC7
-P 2250 1200
+P 2250 1450
 AR Path="/5FD78EC7" Ref="FB?"  Part="1" 
 AR Path="/5F9D7A3C/5FD78EC7" Ref="FB?"  Part="1" 
 AR Path="/5F9E7705/5FD78EC7" Ref="FB2"  Part="1" 
-F 0 "FB2" V 2100 1200 50  0000 C CNN
-F 1 "Fe" V 2350 1200 50  0000 C CNN
-F 2 "" V 2180 1200 50  0001 C CNN
-F 3 "~" H 2250 1200 50  0001 C CNN
-	1    2250 1200
+F 0 "FB2" V 2100 1450 50  0000 C CNN
+F 1 "Fe" V 2350 1450 50  0000 C CNN
+F 2 "" V 2180 1450 50  0001 C CNN
+F 3 "~" H 2250 1450 50  0001 C CNN
+	1    2250 1450
 	0    1    1    0   
 $EndComp
-NoConn ~ 1700 1400
-NoConn ~ 1700 1500
-NoConn ~ 1700 2300
-NoConn ~ 1700 2400
 Text Notes 550  750  0    157  ~ 31
 USB + ESD
 $Comp
@@ -557,16 +541,16 @@ FTDI
 Entry Wire Line
 	6350 1000 6250 900 
 Wire Wire Line
-	1300 3950 1450 3950
+	1300 3750 1450 3750
 Wire Wire Line
-	1650 3950 1750 3950
+	1650 3750 1750 3750
 Wire Wire Line
-	2050 3950 2200 3950
+	2050 3750 2200 3750
 Wire Wire Line
-	1750 4050 1750 3950
-Connection ~ 1750 3950
+	1750 3850 1750 3750
+Connection ~ 1750 3750
 Wire Wire Line
-	1750 3950 1850 3950
+	1750 3750 1850 3750
 Wire Wire Line
 	9200 1300 9050 1300
 Wire Wire Line
@@ -584,27 +568,7 @@ Wire Wire Line
 Wire Wire Line
 	5650 4100 5800 4100
 Wire Wire Line
-	1700 1900 1800 1900
-Wire Wire Line
-	1800 1900 1800 2000
-Wire Wire Line
-	1800 2000 1700 2000
-Connection ~ 1800 1900
-Wire Wire Line
-	1800 1900 1900 1900
-Wire Wire Line
-	1700 1800 1800 1800
-Wire Wire Line
-	1700 1700 1800 1700
-Wire Wire Line
-	1800 1700 1800 1800
-Connection ~ 1800 1800
-Wire Wire Line
-	1800 1800 1900 1800
-Wire Wire Line
-	1700 1200 2000 1200
-Wire Wire Line
-	2000 1250 2000 1200
+	2000 1500 2000 1450
 Wire Notes Line
 	3000 500  3000 4500
 Wire Wire Line
@@ -685,7 +649,7 @@ U 1 1 5FB135D4
 P 5900 1000
 AR Path="/5FB135D4" Ref="J?"  Part="1" 
 AR Path="/5F9E7705/5FB135D4" Ref="J3"  Part="1" 
-F 0 "J3" H 6000 750 50  0000 L CNN
+F 0 "J3" H 5850 1300 50  0000 L CNN
 F 1 "FTDI header" H 5700 600 50  0000 L CNN
 F 2 "" H 5900 1000 50  0001 C CNN
 F 3 "~" H 5900 1000 50  0001 C CNN
@@ -765,63 +729,63 @@ Use jumper
 Text Notes 10700 1500 0    39   Italic 0
 Screw terminal
 Wire Wire Line
-	2000 1200 2150 1200
-Connection ~ 2000 1200
+	2000 1450 2150 1450
+Connection ~ 2000 1450
 Wire Wire Line
-	2350 1200 2550 1200
+	2350 1450 2550 1450
 $Comp
 L Device:R_Small R?
 U 1 1 5FFE7E60
-P 2550 1350
+P 2550 1600
 AR Path="/5FFE7E60" Ref="R?"  Part="1" 
 AR Path="/5F9D7A3C/5FFE7E60" Ref="R?"  Part="1" 
 AR Path="/5F9E7705/5FFE7E60" Ref="R10"  Part="1" 
-F 0 "R10" H 2450 1350 50  0000 C CNN
-F 1 "470" H 2650 1350 50  0000 C CNN
-F 2 "" H 2550 1350 50  0001 C CNN
-F 3 "~" H 2550 1350 50  0001 C CNN
-	1    2550 1350
+F 0 "R10" H 2450 1650 50  0000 C CNN
+F 1 "470" H 2650 1600 50  0000 C CNN
+F 2 "" H 2550 1600 50  0001 C CNN
+F 3 "~" H 2550 1600 50  0001 C CNN
+	1    2550 1600
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:LED D?
 U 1 1 5FFE90D2
-P 2550 1650
+P 2550 1900
 AR Path="/5FFE90D2" Ref="D?"  Part="1" 
 AR Path="/5F9D7A3C/5FFE90D2" Ref="D?"  Part="1" 
 AR Path="/5F9E7705/5FFE90D2" Ref="D2"  Part="1" 
-F 0 "D2" V 2550 1750 50  0000 C CNN
-F 1 "BG1102W-TR" H 2500 1500 50  0000 C CNN
-F 2 "" H 2550 1650 50  0001 C CNN
-F 3 "~" H 2550 1650 50  0001 C CNN
-	1    2550 1650
+F 0 "D2" V 2550 2000 50  0000 C CNN
+F 1 "BG1102W-TR" H 2450 1750 50  0000 C CNN
+F 2 "" H 2550 1900 50  0001 C CNN
+F 3 "~" H 2550 1900 50  0001 C CNN
+	1    2550 1900
 	0    -1   -1   0   
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 5FFEA299
-P 2550 1850
+P 2550 2100
 AR Path="/5FFEA299" Ref="#PWR?"  Part="1" 
 AR Path="/5F9D7A3C/5FFEA299" Ref="#PWR?"  Part="1" 
 AR Path="/5F9E7705/5FFEA299" Ref="#PWR012"  Part="1" 
-F 0 "#PWR012" H 2550 1600 50  0001 C CNN
-F 1 "GND" H 2555 1677 50  0000 C CNN
-F 2 "" H 2550 1850 50  0001 C CNN
-F 3 "" H 2550 1850 50  0001 C CNN
-	1    2550 1850
+F 0 "#PWR012" H 2550 1850 50  0001 C CNN
+F 1 "GND" H 2555 1927 50  0000 C CNN
+F 2 "" H 2550 2100 50  0001 C CNN
+F 3 "" H 2550 2100 50  0001 C CNN
+	1    2550 2100
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2000 1450 2000 1500
+	2000 1700 2000 1750
 Wire Wire Line
-	2550 1450 2550 1500
+	2550 1700 2550 1750
 Wire Wire Line
-	2550 1800 2550 1850
+	2550 2050 2550 2100
 Wire Wire Line
-	2550 1250 2550 1200
+	2550 1500 2550 1450
 Wire Wire Line
-	2550 1200 2550 1100
-Connection ~ 2550 1200
+	2550 1450 2550 1350
+Connection ~ 2550 1450
 Text Notes 550  4750 0    157  ~ 31
 UART isolation + crossover
 Text GLabel 850  6000 0    50   Input ~ 0
@@ -1585,7 +1549,7 @@ P 7000 5050
 AR Path="/5F9E7705/606D9B1D/608CB9A1" Ref="R?"  Part="1" 
 AR Path="/5F9E7705/608CB9A1" Ref="R20"  Part="1" 
 F 0 "R20" H 6800 5100 50  0000 L CNN
-F 1 "10M" H 6800 5000 50  0000 L CNN
+F 1 "1k" H 6800 5000 50  0000 L CNN
 F 2 "" H 7000 5050 50  0001 C CNN
 F 3 "~" H 7000 5050 50  0001 C CNN
 	1    7000 5050
@@ -1598,7 +1562,7 @@ P 7450 5050
 AR Path="/5F9E7705/606D9B1D/608D4282" Ref="R?"  Part="1" 
 AR Path="/5F9E7705/608D4282" Ref="R21"  Part="1" 
 F 0 "R21" H 7250 5100 50  0000 L CNN
-F 1 "10M" H 7250 5000 50  0000 L CNN
+F 1 "1k" H 7250 5000 50  0000 L CNN
 F 2 "" H 7450 5050 50  0001 C CNN
 F 3 "~" H 7450 5050 50  0001 C CNN
 	1    7450 5050
@@ -1611,7 +1575,7 @@ P 7900 5050
 AR Path="/5F9E7705/606D9B1D/608D471E" Ref="R?"  Part="1" 
 AR Path="/5F9E7705/608D471E" Ref="R22"  Part="1" 
 F 0 "R22" H 7700 5100 50  0000 L CNN
-F 1 "10M" H 7700 5000 50  0000 L CNN
+F 1 "1k" H 7700 5000 50  0000 L CNN
 F 2 "" H 7900 5050 50  0001 C CNN
 F 3 "~" H 7900 5050 50  0001 C CNN
 	1    7900 5050
@@ -1673,6 +1637,28 @@ Wire Wire Line
 	7450 5500 8600 5500
 Wire Wire Line
 	7900 5750 8600 5750
+Entry Wire Line
+	8800 3450 8700 3350
+Entry Wire Line
+	8800 3650 8700 3550
+$Comp
+L Connector:USB_B J2
+U 1 1 5F9FA669
+P 950 1650
+F 0 "J2" H 950 2100 50  0000 C CNN
+F 1 "USB_B" H 950 2000 50  0000 C CNN
+F 2 "" H 1100 1600 50  0001 C CNN
+F 3 " ~" H 1100 1600 50  0001 C CNN
+	1    950  1650
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	1250 1650 1350 1650
+Wire Wire Line
+	1250 1750 1350 1750
+Wire Wire Line
+	1250 1450 2000 1450
+NoConn ~ 850  2050
 Wire Bus Line
 	7700 1200 7700 1450
 Wire Wire Line
@@ -1686,11 +1672,7 @@ Wire Bus Line
 Wire Bus Line
 	950  6000 950  6700
 Wire Bus Line
-	6350 1000 6350 2600
-Entry Wire Line
-	8800 3450 8700 3350
-Entry Wire Line
-	8800 3650 8700 3550
-Wire Bus Line
 	8700 3050 8700 5650
+Wire Bus Line
+	6350 1000 6350 2600
 $EndSCHEMATC
diff --git a/kicad/rs232.sch b/kicad/rs232.sch
index 1307642..55a6148 100644
--- a/kicad/rs232.sch
+++ b/kicad/rs232.sch
@@ -301,8 +301,8 @@ P 5150 4200
 AR Path="/6072AD1D" Ref="R?"  Part="1" 
 AR Path="/5F9E7705/6072AD1D" Ref="R?"  Part="1" 
 AR Path="/5F9E7705/606D9B1D/6072AD1D" Ref="R28"  Part="1" 
-F 0 "R28" H 5250 4200 50  0000 C CNN
-F 1 "10k" H 5250 4300 50  0000 C CNN
+F 0 "R28" H 5300 4200 50  0000 C CNN
+F 1 "10k" H 5300 4300 50  0000 C CNN
 F 2 "" H 5150 4200 50  0001 C CNN
 F 3 "~" H 5150 4200 50  0001 C CNN
 	1    5150 4200
@@ -427,7 +427,7 @@ L Device:R_Small R25
 U 1 1 6078CA95
 P 3400 3700
 F 0 "R25" H 3200 3750 50  0000 L CNN
-F 1 "10M" H 3200 3650 50  0000 L CNN
+F 1 "1k" H 3200 3650 50  0000 L CNN
 F 2 "" H 3400 3700 50  0001 C CNN
 F 3 "~" H 3400 3700 50  0001 C CNN
 	1    3400 3700
@@ -438,7 +438,7 @@ L Device:R_Small R26
 U 1 1 607905A0
 P 3650 3950
 F 0 "R26" H 3450 4000 50  0000 L CNN
-F 1 "10M" H 3450 3900 50  0000 L CNN
+F 1 "1k" H 3450 3900 50  0000 L CNN
 F 2 "" H 3650 3950 50  0001 C CNN
 F 3 "~" H 3650 3950 50  0001 C CNN
 	1    3650 3950
@@ -449,7 +449,7 @@ L Device:R_Small R27
 U 1 1 6079137B
 P 3900 4200
 F 0 "R27" H 3700 4250 50  0000 L CNN
-F 1 "10M" H 3700 4150 50  0000 L CNN
+F 1 "1k" H 3700 4150 50  0000 L CNN
 F 2 "" H 3900 4200 50  0001 C CNN
 F 3 "~" H 3900 4200 50  0001 C CNN
 	1    3900 4200