1904 esp-programmer.sch

EESchema Schematic File Version 4
LIBS:1904 esp-programmer-cache
EELAYER 29 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "ESP32 CH340 programmer"
Date ""
Rev "2"
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Components:CH340T DD1
U 1 1 5CAA46F5
P 4100 5000
F 0 "DD1" H 4100 5865 50  0000 C CNN
F 1 "CH340T" H 4100 5774 50  0000 C CNN
F 2 "Package_SO:SSOP-20_5.3x7.2mm_P0.65mm" H 4100 4150 50  0001 C CNN
F 3 "https://cdn.sparkfun.com/datasheets/Dev/Arduino/Other/CH340DS1.PDF" H 4150 4050 50  0001 C CNN
	1    4100 5000
	1    0    0    -1  
$EndComp
$Comp
L regulators:LM1117MP-3.3_NOPB DA1
U 1 1 5CAA511B
P 5200 1650
F 0 "DA1" H 5200 2037 60  0000 C CNN
F 1 "LM1117MP-3.3_NOPB" H 5200 1931 60  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-223-3_TabPin2" H 5200 1050 60  0001 C CNN
F 3 "" H 5150 1150 60  0001 C CNN
	1    5200 1650
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:C C1
U 1 1 5CAA5848
P 3150 5400
F 0 "C1" H 3278 5446 50  0000 L CNN
F 1 "0,1" H 3278 5355 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 3150 5400 60  0001 C CNN
F 3 "" H 3150 5400 60  0000 C CNN
	1    3150 5400
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:C_EL C4
U 1 1 5CAA5BC2
P 4550 1750
F 0 "C4" H 4678 1796 50  0000 L CNN
F 1 "10,0" H 4678 1705 50  0000 L CNN
F 2 "Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A" H 4550 1750 60  0001 C CNN
F 3 "" H 4550 1750 60  0000 C CNN
	1    4550 1750
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:C_EL C6
U 1 1 5CAA6EDA
P 5850 1750
F 0 "C6" H 5978 1796 50  0000 L CNN
F 1 "10,0" H 5978 1705 50  0000 L CNN
F 2 "Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A" H 5850 1750 60  0001 C CNN
F 3 "" H 5850 1750 60  0000 C CNN
	1    5850 1750
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:Polyfuse FU1
U 1 1 5CAA907D
P 4100 1550
F 0 "FU1" H 4100 1815 50  0000 C CNN
F 1 "0,5A" H 4100 1724 50  0000 C CNN
F 2 "Fuse:Fuse_1812_4532Metric" H 4100 1550 60  0001 C CNN
F 3 "" H 4100 1550 60  0000 C CNN
	1    4100 1550
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:+5V #PWR0101
U 1 1 5CAA938F
P 4550 1250
F 0 "#PWR0101" H 4550 1390 20  0001 C CNN
F 1 "+5V" V 4555 1358 30  0000 L CNN
F 2 "" H 4550 1250 60  0000 C CNN
F 3 "" H 4550 1250 60  0000 C CNN
	1    4550 1250
	1    0    0    -1  
$EndComp
Text Label 3600 4400 2    50   ~ 0
UD+
Text Label 3600 4500 2    50   ~ 0
UD-
$Comp
L Power_ESKD:GND #PWR0102
U 1 1 5CAAA2ED
P 3100 2750
F 0 "#PWR0102" H 3100 2750 30  0001 C CNN
F 1 "GND" H 3100 2705 30  0001 C CNN
F 2 "" H 3100 2750 60  0000 C CNN
F 3 "" H 3100 2750 60  0000 C CNN
	1    3100 2750
	1    0    0    -1  
$EndComp
Wire Wire Line
	3100 2700 3100 2550
Wire Wire Line
	3100 2450 2950 2450
Wire Wire Line
	2950 2550 3100 2550
Connection ~ 3100 2550
Wire Wire Line
	3100 2550 3100 2450
$Comp
L Power_ESKD:GND #PWR0103
U 1 1 5CAAA7BC
P 5200 2450
F 0 "#PWR0103" H 5200 2450 30  0001 C CNN
F 1 "GND" H 5200 2405 30  0001 C CNN
F 2 "" H 5200 2450 60  0000 C CNN
F 3 "" H 5200 2450 60  0000 C CNN
	1    5200 2450
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:GND #PWR0104
U 1 1 5CAAAF3D
P 4550 2450
F 0 "#PWR0104" H 4550 2450 30  0001 C CNN
F 1 "GND" H 4550 2405 30  0001 C CNN
F 2 "" H 4550 2450 60  0000 C CNN
F 3 "" H 4550 2450 60  0000 C CNN
	1    4550 2450
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:GND #PWR0105
U 1 1 5CAAB0FA
P 5850 2450
F 0 "#PWR0105" H 5850 2450 30  0001 C CNN
F 1 "GND" H 5850 2405 30  0001 C CNN
F 2 "" H 5850 2450 60  0000 C CNN
F 3 "" H 5850 2450 60  0000 C CNN
	1    5850 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 1550 4550 1550
Wire Wire Line
	4550 1600 4550 1550
Connection ~ 4550 1550
Wire Wire Line
	4550 1550 4350 1550
Wire Wire Line
	4550 1900 4550 2400
$Comp
L Power_ESKD:+3,3V #PWR0106
U 1 1 5CAAC360
P 6600 1550
F 0 "#PWR0106" H 6600 1690 20  0001 C CNN
F 1 "+3,3V" V 6605 1658 30  0000 L CNN
F 2 "" H 6600 1550 60  0000 C CNN
F 3 "" H 6600 1550 60  0000 C CNN
	1    6600 1550
	0    1    1    0   
$EndComp
Wire Wire Line
	6600 1550 6400 1550
Wire Wire Line
	5850 1600 5850 1550
Connection ~ 5850 1550
Wire Wire Line
	5850 1550 5600 1550
Wire Wire Line
	5850 1900 5850 2400
Wire Wire Line
	4600 5600 4700 5600
Wire Wire Line
	4700 5600 4700 6100
Wire Wire Line
	4700 6100 4250 6100
Wire Wire Line
	3950 6100 3500 6100
Wire Wire Line
	3500 6100 3500 5600
Wire Wire Line
	3500 5600 3600 5600
$Comp
L Generic_ESKD:C C3
U 1 1 5CAB3FFF
P 3500 6300
F 0 "C3" H 3628 6346 50  0000 L CNN
F 1 "22" H 3628 6255 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 3500 6300 60  0001 C CNN
F 3 "" H 3500 6300 60  0000 C CNN
	1    3500 6300
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:C C5
U 1 1 5CAB43C8
P 4700 6300
F 0 "C5" H 4828 6346 50  0000 L CNN
F 1 "22" H 4828 6255 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 4700 6300 60  0001 C CNN
F 3 "" H 4700 6300 60  0000 C CNN
	1    4700 6300
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:GND #PWR0109
U 1 1 5CAB468A
P 3500 6500
F 0 "#PWR0109" H 3500 6500 30  0001 C CNN
F 1 "GND" H 3500 6455 30  0001 C CNN
F 2 "" H 3500 6500 60  0000 C CNN
F 3 "" H 3500 6500 60  0000 C CNN
	1    3500 6500
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:GND #PWR0110
U 1 1 5CAB4956
P 4700 6500
F 0 "#PWR0110" H 4700 6500 30  0001 C CNN
F 1 "GND" H 4700 6455 30  0001 C CNN
F 2 "" H 4700 6500 60  0000 C CNN
F 3 "" H 4700 6500 60  0000 C CNN
	1    4700 6500
	1    0    0    -1  
$EndComp
Wire Wire Line
	4700 6100 4700 6150
Connection ~ 4700 6100
Wire Wire Line
	3500 6150 3500 6100
Connection ~ 3500 6100
$Comp
L Power_ESKD:GND #PWR0111
U 1 1 5CAB515F
P 3500 5450
F 0 "#PWR0111" H 3500 5450 30  0001 C CNN
F 1 "GND" H 3500 5405 30  0001 C CNN
F 2 "" H 3500 5450 60  0000 C CNN
F 3 "" H 3500 5450 60  0000 C CNN
	1    3500 5450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3500 5400 3500 5300
Wire Wire Line
	3500 5300 3600 5300
$Comp
L Power_ESKD:GND #PWR0113
U 1 1 5CAB5A37
P 3150 5600
F 0 "#PWR0113" H 3150 5600 30  0001 C CNN
F 1 "GND" H 3150 5555 30  0001 C CNN
F 2 "" H 3150 5600 60  0000 C CNN
F 3 "" H 3150 5600 60  0000 C CNN
	1    3150 5600
	1    0    0    -1  
$EndComp
Wire Wire Line
	3150 5250 3150 5200
$Comp
L Generic_ESKD:R R5
U 1 1 5CABE015
P 5900 4950
F 0 "R5" H 5978 4996 50  0000 L CNN
F 1 "12k" H 5978 4905 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5900 4950 60  0001 C CNN
F 3 "" H 5900 4950 60  0000 C CNN
	1    5900 4950
	0    1    1    0   
$EndComp
$Comp
L bjt:BC847BW VT1
U 1 1 5CABEDF9
P 6350 4300
F 0 "VT1" H 6526 4353 60  0000 L CNN
F 1 "BC847BW" H 6526 4247 60  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-323_SC-70" H 6350 3800 60  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/BC847_SER.pdf" H 6350 4300 60  0001 C CNN
	1    6350 4300
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:R R4
U 1 1 5CABF26B
P 5900 4300
F 0 "R4" H 5978 4346 50  0000 L CNN
F 1 "12k" H 5978 4255 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5900 4300 60  0001 C CNN
F 3 "" H 5900 4300 60  0000 C CNN
	1    5900 4300
	0    1    1    0   
$EndComp
Wire Wire Line
	6450 4550 6450 4500
Wire Wire Line
	5350 4950 5550 4950
Wire Wire Line
	6200 4300 6150 4300
Wire Wire Line
	6200 4950 6150 4950
$Comp
L bjt:BC847BW VT2
U 1 1 5CABC0E3
P 6350 4950
F 0 "VT2" H 6526 5003 60  0000 L CNN
F 1 "BC847BW" H 6526 4897 60  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-323_SC-70" H 6350 4450 60  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/BC847_SER.pdf" H 6350 4950 60  0001 C CNN
	1    6350 4950
	1    0    0    1   
$EndComp
Wire Wire Line
	6450 4750 6450 4700
Wire Wire Line
	6450 4700 5550 4550
Wire Wire Line
	5550 4550 5550 4300
Wire Wire Line
	5550 4300 5650 4300
Wire Wire Line
	6450 4550 5550 4700
Wire Wire Line
	5550 4700 5550 4950
Connection ~ 5550 4950
Wire Wire Line
	5550 4950 5650 4950
Wire Wire Line
	4600 4600 5350 4600
Wire Wire Line
	4600 4700 5350 4700
Wire Wire Line
	5350 4950 5350 4700
Wire Wire Line
	5350 4600 5350 4300
Wire Wire Line
	5350 4300 5550 4300
Connection ~ 5550 4300
Text Label 6450 5150 3    50   ~ 0
nRST
Text Label 6450 4100 1    50   ~ 0
GPIO0
$Comp
L Generic_ESKD:LED HL1
U 1 1 5CACDFB1
P 6400 2250
F 0 "HL1" V 6354 2478 60  0000 L CNN
F 1 "PWR" V 6460 2478 60  0000 L CNN
F 2 "LED_SMD:LED_0805_2012Metric" H 6400 2250 60  0001 C CNN
F 3 "" H 6400 2250 60  0000 C CNN
	1    6400 2250
	0    1    1    0   
$EndComp
$Comp
L connectors:CONN_06_M XP1
U 1 1 5CACE60E
P 9200 5700
F 0 "XP1" H 9492 4953 60  0000 C CNN
F 1 "CONN_06_M" H 9492 5059 60  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical" H 9200 5700 60  0001 C CNN
F 3 "" H 9200 5700 60  0000 C CNN
	1    9200 5700
	1    0    0    1   
$EndComp
$Comp
L Power_ESKD:GND #PWR0114
U 1 1 5CACFED1
P 9050 5850
F 0 "#PWR0114" H 9050 5850 30  0001 C CNN
F 1 "GND" H 9050 5805 30  0001 C CNN
F 2 "" H 9050 5850 60  0000 C CNN
F 3 "" H 9050 5850 60  0000 C CNN
	1    9050 5850
	1    0    0    -1  
$EndComp
Wire Wire Line
	9050 5800 9050 5700
Wire Wire Line
	9050 5700 9200 5700
Text Label 9200 5600 2    50   ~ 0
GPIO0
$Comp
L Generic_ESKD:R R2
U 1 1 5CAD13ED
P 5900 3450
F 0 "R2" H 5978 3496 50  0000 L CNN
F 1 "470" H 5978 3405 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5900 3450 60  0001 C CNN
F 3 "" H 5900 3450 60  0000 C CNN
	1    5900 3450
	0    1    1    0   
$EndComp
Wire Wire Line
	4600 4500 5200 4500
Wire Wire Line
	5200 4500 5200 3750
Wire Wire Line
	5200 3750 5650 3750
Wire Wire Line
	4600 4400 5100 4400
Wire Wire Line
	5100 4400 5100 3450
Wire Wire Line
	5100 3450 5650 3450
$Comp
L Power_ESKD:+3,3V #PWR0115
U 1 1 5CAD2F3F
P 9200 5500
F 0 "#PWR0115" H 9200 5640 20  0001 C CNN
F 1 "+3,3V" V 9205 5608 30  0000 L CNN
F 2 "" H 9200 5500 60  0000 C CNN
F 3 "" H 9200 5500 60  0000 C CNN
	1    9200 5500
	0    -1   -1   0   
$EndComp
Text Label 6150 3450 0    50   ~ 0
RXDO
Text Label 6150 3750 0    50   ~ 0
TXDO
Text Label 9200 5300 2    50   ~ 0
RXDO
Text Label 9200 5400 2    50   ~ 0
TXDO
Text Label 9200 5200 2    50   ~ 0
nRST
$Comp
L Generic_ESKD:R R6
U 1 1 5CAD8815
P 6400 1850
F 0 "R6" H 6478 1896 50  0000 L CNN
F 1 "1k" H 6478 1805 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 6400 1850 60  0001 C CNN
F 3 "" H 6400 1850 60  0000 C CNN
	1    6400 1850
	-1   0    0    1   
$EndComp
Wire Wire Line
	6400 1600 6400 1550
Connection ~ 6400 1550
Wire Wire Line
	6400 1550 5850 1550
$Comp
L Power_ESKD:GND #PWR0116
U 1 1 5CADB2C5
P 6400 2450
F 0 "#PWR0116" H 6400 2450 30  0001 C CNN
F 1 "GND" H 6400 2405 30  0001 C CNN
F 2 "" H 6400 2450 60  0000 C CNN
F 3 "" H 6400 2450 60  0000 C CNN
	1    6400 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	4550 1250 4550 1550
Wire Wire Line
	5200 2400 5200 1950
$Comp
L Mechanical:MountingHole H1
U 1 1 5CAF5C00
P 8850 1550
F 0 "H1" H 8950 1596 50  0000 L CNN
F 1 "M3" H 8950 1505 50  0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 8850 1550 50  0001 C CNN
F 3 "~" H 8850 1550 50  0001 C CNN
	1    8850 1550
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:MountingHole H3
U 1 1 5CAF60D2
P 9200 1550
F 0 "H3" H 9300 1596 50  0000 L CNN
F 1 "M3" H 9300 1505 50  0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 9200 1550 50  0001 C CNN
F 3 "~" H 9200 1550 50  0001 C CNN
	1    9200 1550
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:MountingHole H4
U 1 1 5CAF61FF
P 9200 1800
F 0 "H4" H 9300 1846 50  0000 L CNN
F 1 "M3" H 9300 1755 50  0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 9200 1800 50  0001 C CNN
F 3 "~" H 9200 1800 50  0001 C CNN
	1    9200 1800
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:MountingHole H2
U 1 1 5CAF636B
P 8850 1800
F 0 "H2" H 8950 1846 50  0000 L CNN
F 1 "M3" H 8950 1755 50  0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 8850 1800 50  0001 C CNN
F 3 "~" H 8850 1800 50  0001 C CNN
	1    8850 1800
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:PWR_FLAG #FLG0101
U 1 1 5CAF6C00
P 9800 1650
F 0 "#FLG0101" H 9800 1745 30  0001 C CNN
F 1 "PWR_FLAG" H 9800 1858 30  0000 C CNN
F 2 "" H 9800 1650 60  0000 C CNN
F 3 "" H 9800 1650 60  0000 C CNN
	1    9800 1650
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:GND #PWR0117
U 1 1 5CAF6F7F
P 9800 1700
F 0 "#PWR0117" H 9800 1700 30  0001 C CNN
F 1 "GND" H 9800 1655 30  0001 C CNN
F 2 "" H 9800 1700 60  0000 C CNN
F 3 "" H 9800 1700 60  0000 C CNN
	1    9800 1700
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:PWR_FLAG #FLG0102
U 1 1 5CAF71FD
P 10100 1650
F 0 "#FLG0102" H 10100 1745 30  0001 C CNN
F 1 "PWR_FLAG" H 10100 1858 30  0000 C CNN
F 2 "" H 10100 1650 60  0000 C CNN
F 3 "" H 10100 1650 60  0000 C CNN
	1    10100 1650
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:PWR_FLAG #FLG0103
U 1 1 5CAF7426
P 10450 1650
F 0 "#FLG0103" H 10450 1745 30  0001 C CNN
F 1 "PWR_FLAG" H 10450 1858 30  0000 C CNN
F 2 "" H 10450 1650 60  0000 C CNN
F 3 "" H 10450 1650 60  0000 C CNN
	1    10450 1650
	1    0    0    -1  
$EndComp
$Comp
L Power_ESKD:+3,3V #PWR0118
U 1 1 5CAF76E3
P 10100 1650
F 0 "#PWR0118" H 10100 1790 20  0001 C CNN
F 1 "+3,3V" V 10105 1758 30  0000 L CNN
F 2 "" H 10100 1650 60  0000 C CNN
F 3 "" H 10100 1650 60  0000 C CNN
	1    10100 1650
	-1   0    0    1   
$EndComp
$Comp
L Power_ESKD:+5V #PWR0119
U 1 1 5CAF7CF1
P 10450 1650
F 0 "#PWR0119" H 10450 1790 20  0001 C CNN
F 1 "+5V" V 10455 1758 30  0000 L CNN
F 2 "" H 10450 1650 60  0000 C CNN
F 3 "" H 10450 1650 60  0000 C CNN
	1    10450 1650
	-1   0    0    1   
$EndComp
NoConn ~ 4600 5400
NoConn ~ 4600 5300
NoConn ~ 4600 5100
NoConn ~ 4600 5000
NoConn ~ 4600 4900
NoConn ~ 4600 4800
NoConn ~ 3600 4800
NoConn ~ 3600 4700
$Comp
L connectors:USB_C_Female_USB2.0 XS1
U 1 1 5CB000B0
P 2750 2050
F 0 "XS1" H 2842 2862 60  0000 C CNN
F 1 "USB_C_Female_USB2.0" H 2842 2756 60  0000 C CNN
F 2 "modules:USB_C_Receptacle_USB2.0_16P" H 2550 2550 60  0001 C CNN
F 3 "" H 2550 2550 60  0000 C CNN
	1    2750 2050
	-1   0    0    -1  
$EndComp
Text Label 2950 1950 0    50   ~ 0
UD+
Text Label 2950 1850 0    50   ~ 0
UD+
Text Label 2950 2050 0    50   ~ 0
UD-
Text Label 2950 2150 0    50   ~ 0
UD-
$Comp
L Generic_ESKD:R R1
U 1 1 5CB034DE
P 3450 2150
F 0 "R1" H 3528 2196 50  0000 L CNN
F 1 "5,1k" H 3528 2105 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 3450 2150 60  0001 C CNN
F 3 "" H 3450 2150 60  0000 C CNN
	1    3450 2150
	1    0    0    -1  
$EndComp
Wire Wire Line
	2950 1650 3050 1650
Wire Wire Line
	3050 1650 3050 1750
Wire Wire Line
	3050 1750 2950 1750
NoConn ~ 2950 2350
NoConn ~ 2950 2250
$Comp
L Generic_ESKD:Crystal Z1
U 1 1 5CB2155C
P 4100 6100
F 0 "Z1" V 3763 6100 60  0000 C CNN
F 1 "12MHz" V 3869 6100 60  0000 C CNN
F 2 "Crystal:Crystal_HC49-4H_Vertical" H 4100 6075 60  0001 C CNN
F 3 "" H 4100 6075 60  0000 C CNN
	1    4100 6100
	0    1    1    0   
$EndComp
Wire Wire Line
	2950 1550 3850 1550
Wire Wire Line
	3450 1900 3450 1750
Wire Wire Line
	3450 1750 3050 1750
Connection ~ 3050 1750
Wire Wire Line
	3450 2400 3450 2550
Wire Wire Line
	3450 2550 3100 2550
Wire Wire Line
	3150 5200 3600 5200
$Comp
L Power_ESKD:+3,3V #PWR0107
U 1 1 5CAACC8A
P 3000 5100
F 0 "#PWR0107" H 3000 5240 20  0001 C CNN
F 1 "+3,3V" V 3006 5207 30  0000 L CNN
F 2 "" H 3000 5100 60  0000 C CNN
F 3 "" H 3000 5100 60  0000 C CNN
	1    3000 5100
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3600 5100 3150 5100
Wire Wire Line
	3150 5200 3150 5100
Connection ~ 3150 5200
Connection ~ 3150 5100
Wire Wire Line
	3150 5100 3000 5100
$Comp
L Generic_ESKD:R R3
U 1 1 5CAD0BB8
P 5900 3750
F 0 "R3" H 5978 3796 50  0000 L CNN
F 1 "470" H 5978 3705 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5900 3750 60  0001 C CNN
F 3 "" H 5900 3750 60  0000 C CNN
	1    5900 3750
	0    1    1    0   
$EndComp
$Comp
L Power_ESKD:GND #PWR02
U 1 1 5CAE7882
P 8550 3950
F 0 "#PWR02" H 8550 3950 30  0001 C CNN
F 1 "GND" H 8550 3905 30  0001 C CNN
F 2 "" H 8550 3950 60  0000 C CNN
F 3 "" H 8550 3950 60  0000 C CNN
	1    8550 3950
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:LED HL2
U 1 1 5CAE79FD
P 8550 3750
F 0 "HL2" V 8504 3978 60  0000 L CNN
F 1 "TX" V 8610 3978 60  0000 L CNN
F 2 "LED_SMD:LED_0805_2012Metric" H 8550 3750 60  0001 C CNN
F 3 "" H 8550 3750 60  0000 C CNN
	1    8550 3750
	0    1    1    0   
$EndComp
$Comp
L Generic_ESKD:R R8
U 1 1 5CAE811C
P 8550 3350
F 0 "R8" H 8628 3396 50  0000 L CNN
F 1 "1k" H 8628 3305 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 8550 3350 60  0001 C CNN
F 3 "" H 8550 3350 60  0000 C CNN
	1    8550 3350
	-1   0    0    1   
$EndComp
$Comp
L Power_ESKD:+3,3V #PWR01
U 1 1 5CAE838B
P 8550 2550
F 0 "#PWR01" H 8550 2690 20  0001 C CNN
F 1 "+3,3V" V 8555 2658 30  0000 L CNN
F 2 "" H 8550 2550 60  0000 C CNN
F 3 "" H 8550 2550 60  0000 C CNN
	1    8550 2550
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:R R7
U 1 1 5CAE8752
P 8000 2900
F 0 "R7" H 8078 2946 50  0000 L CNN
F 1 "12k" H 8078 2855 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 8000 2900 60  0001 C CNN
F 3 "" H 8000 2900 60  0000 C CNN
	1    8000 2900
	0    1    1    0   
$EndComp
Text Label 4600 4500 0    50   ~ 0
TXD
Text Label 7750 2900 2    50   ~ 0
TXD
$Comp
L Power_ESKD:GND #PWR04
U 1 1 5CAEC67E
P 10000 3950
F 0 "#PWR04" H 10000 3950 30  0001 C CNN
F 1 "GND" H 10000 3905 30  0001 C CNN
F 2 "" H 10000 3950 60  0000 C CNN
F 3 "" H 10000 3950 60  0000 C CNN
	1    10000 3950
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:LED HL3
U 1 1 5CAEC684
P 10000 3750
F 0 "HL3" V 9954 3978 60  0000 L CNN
F 1 "RX" V 10060 3978 60  0000 L CNN
F 2 "LED_SMD:LED_0805_2012Metric" H 10000 3750 60  0001 C CNN
F 3 "" H 10000 3750 60  0000 C CNN
	1    10000 3750
	0    1    1    0   
$EndComp
$Comp
L Generic_ESKD:R R10
U 1 1 5CAEC68A
P 10000 3350
F 0 "R10" H 10078 3396 50  0000 L CNN
F 1 "1k" H 10078 3305 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 10000 3350 60  0001 C CNN
F 3 "" H 10000 3350 60  0000 C CNN
	1    10000 3350
	-1   0    0    1   
$EndComp
$Comp
L Power_ESKD:+3,3V #PWR03
U 1 1 5CAEC690
P 10000 2550
F 0 "#PWR03" H 10000 2690 20  0001 C CNN
F 1 "+3,3V" V 10005 2658 30  0000 L CNN
F 2 "" H 10000 2550 60  0000 C CNN
F 3 "" H 10000 2550 60  0000 C CNN
	1    10000 2550
	1    0    0    -1  
$EndComp
$Comp
L Generic_ESKD:R R9
U 1 1 5CAEC696
P 9450 2900
F 0 "R9" H 9528 2946 50  0000 L CNN
F 1 "12k" H 9528 2855 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 9450 2900 60  0001 C CNN
F 3 "" H 9450 2900 60  0000 C CNN
	1    9450 2900
	0    1    1    0   
$EndComp
Text Label 9200 2900 2    50   ~ 0
RXDO
$Comp
L Transistor_BJT:BC857 VT4
U 1 1 5CDDD309
P 9900 2900
F 0 "VT4" H 10091 2854 50  0000 L CNN
F 1 "BC857" H 10091 2945 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 10100 2825 50  0001 L CIN
F 3 "http://www.fairchildsemi.com/ds/BC/BC856.pdf" H 9900 2900 50  0001 L CNN
	1    9900 2900
	1    0    0    1   
$EndComp
Wire Wire Line
	10000 2550 10000 2700
$Comp
L Transistor_BJT:BC857 VT3
U 1 1 5CDE70CF
P 8450 2900
F 0 "VT3" H 8641 2854 50  0000 L CNN
F 1 "BC857" H 8641 2945 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 8650 2825 50  0001 L CIN
F 3 "http://www.fairchildsemi.com/ds/BC/BC856.pdf" H 8450 2900 50  0001 L CNN
	1    8450 2900
	1    0    0    1   
$EndComp
Wire Wire Line
	8550 2550 8550 2700
$EndSCHEMATC