EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 6 6
Title ""
Date "2022-01-15"
Rev "V0.9.0"
Comp "stiefel.tech"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L RF_Module:ESP-WROOM-02 U?
U 1 1 61A1CA55
P 3650 3400
AR Path="/61A1CA55" Ref="U?"  Part="1" 
AR Path="/61A0DE56/61A1CA55" Ref="U7"  Part="1" 
F 0 "U7" H 3750 4150 50  0000 L CNN
F 1 "ESP-WROOM-02" H 3750 4050 50  0000 L CNN
F 2 "RF_Module:ESP-WROOM-02" H 4250 2850 50  0001 C CNN
F 3 "https://www.espressif.com/sites/default/files/documentation/esp-wroom-02u_esp-wroom-02d_datasheet_en.pdf" H 3700 4900 50  0001 C CNN
F 4 "1965-ESP-WROOM-02D(2MB)TR-ND" H 3650 3400 50  0001 C CNN "Digikey"
	1    3650 3400
	1    0    0    -1  
$EndComp
$Comp
L Transistor_BJT:MMBT3904 Q?
U 1 1 61A1CA5C
P 6250 2200
AR Path="/60355F25/61A1CA5C" Ref="Q?"  Part="1" 
AR Path="/60A88316/61A1CA5C" Ref="Q?"  Part="1" 
AR Path="/606B2804/61A1CA5C" Ref="Q?"  Part="1" 
AR Path="/606B5506/61A1CA5C" Ref="Q?"  Part="1" 
AR Path="/61A1CA5C" Ref="Q?"  Part="1" 
AR Path="/61A0DE56/61A1CA5C" Ref="Q2"  Part="1" 
F 0 "Q2" H 6441 2246 50  0000 L CNN
F 1 "MMBT3904" H 6441 2155 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 6450 2125 50  0001 L CIN
F 3 "https://www.diodes.com/assets/Datasheets/ds30036.pdf" H 6250 2200 50  0001 L CNN
F 4 "MMBT3904-7-F" H 6250 2200 50  0001 C CNN "Digikey"
	1    6250 2200
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61A1CA63
P 5900 2200
AR Path="/60355F25/61A1CA63" Ref="R?"  Part="1" 
AR Path="/60A88316/61A1CA63" Ref="R?"  Part="1" 
AR Path="/61A1CA63" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61A1CA63" Ref="R58"  Part="1" 
F 0 "R58" V 5800 2200 50  0000 C CNN
F 1 "10.2 k" V 6000 2200 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5900 2200 50  0001 C CNN
F 3 "~" H 5900 2200 50  0001 C CNN
F 4 "YAG5252CT-ND" V 5900 2200 50  0001 C CNN "Digikey"
	1    5900 2200
	0    1    1    0   
$EndComp
$Comp
L Transistor_BJT:MMBT3904 Q?
U 1 1 61A1CA6A
P 6250 2800
AR Path="/60355F25/61A1CA6A" Ref="Q?"  Part="1" 
AR Path="/60A88316/61A1CA6A" Ref="Q?"  Part="1" 
AR Path="/606B2804/61A1CA6A" Ref="Q?"  Part="1" 
AR Path="/606B5506/61A1CA6A" Ref="Q?"  Part="1" 
AR Path="/61A1CA6A" Ref="Q?"  Part="1" 
AR Path="/61A0DE56/61A1CA6A" Ref="Q3"  Part="1" 
F 0 "Q3" H 6441 2846 50  0000 L CNN
F 1 "MMBT3904" H 6441 2755 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 6450 2725 50  0001 L CIN
F 3 "https://www.diodes.com/assets/Datasheets/ds30036.pdf" H 6250 2800 50  0001 L CNN
F 4 "MMBT3904-7-F" H 6250 2800 50  0001 C CNN "Digikey"
	1    6250 2800
	1    0    0    1   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61A1CA71
P 5900 2800
AR Path="/60355F25/61A1CA71" Ref="R?"  Part="1" 
AR Path="/60A88316/61A1CA71" Ref="R?"  Part="1" 
AR Path="/61A1CA71" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61A1CA71" Ref="R59"  Part="1" 
F 0 "R59" V 5800 2800 50  0000 C CNN
F 1 "10.2 k" V 6000 2800 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5900 2800 50  0001 C CNN
F 3 "~" H 5900 2800 50  0001 C CNN
F 4 "YAG5252CT-ND" V 5900 2800 50  0001 C CNN "Digikey"
	1    5900 2800
	0    1    1    0   
$EndComp
Wire Wire Line
	6000 2200 6050 2200
Text Label 6800 1900 2    50   ~ 0
~RST
Text Label 6800 3100 2    50   ~ 0
GPIO0
Wire Wire Line
	5300 2200 5650 2200
Text Label 5300 2200 0    50   ~ 0
~DTR
Text Label 5300 2800 0    50   ~ 0
~RTS
Wire Wire Line
	5300 2800 5700 2800
Wire Wire Line
	5700 2800 5700 2450
Wire Wire Line
	5700 2450 6350 2450
Wire Wire Line
	6350 2450 6350 2400
Connection ~ 5700 2800
Wire Wire Line
	5700 2800 5800 2800
Wire Wire Line
	6350 2600 6350 2550
Wire Wire Line
	6800 3100 6350 3100
Wire Wire Line
	6350 3100 6350 3000
Wire Wire Line
	6800 1900 6350 1900
Wire Wire Line
	6350 1900 6350 2000
Wire Wire Line
	6000 2800 6050 2800
Wire Wire Line
	5650 2200 5650 2550
Wire Wire Line
	5650 2550 6350 2550
Connection ~ 5650 2200
Wire Wire Line
	5650 2200 5800 2200
Text Label 4600 3000 2    50   ~ 0
GPIO0
Text Label 2700 3100 0    50   ~ 0
~RST
Wire Wire Line
	2700 3100 3150 3100
$Comp
L Device:C_Small C?
U 1 1 61A1CA92
P 1600 2000
AR Path="/60355F25/61A1CA92" Ref="C?"  Part="1" 
AR Path="/60A88316/61A1CA92" Ref="C?"  Part="1" 
AR Path="/606B2804/61A1CA92" Ref="C?"  Part="1" 
AR Path="/606B5506/61A1CA92" Ref="C?"  Part="1" 
AR Path="/61A1CA92" Ref="C?"  Part="1" 
AR Path="/61A0DE56/61A1CA92" Ref="C74"  Part="1" 
F 0 "C74" H 1509 1954 50  0000 R CNN
F 1 "100 nF" H 1509 2045 50  0000 R CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 1600 2000 50  0001 C CNN
F 3 "~" H 1600 2000 50  0001 C CNN
F 4 "1276-1043-2-ND" H 1600 2000 50  0001 C CNN "Digikey"
	1    1600 2000
	1    0    0    1   
$EndComp
$Comp
L Device:C_Small C?
U 1 1 61A1CA99
P 2050 2000
AR Path="/60355F25/61A1CA99" Ref="C?"  Part="1" 
AR Path="/60A88316/61A1CA99" Ref="C?"  Part="1" 
AR Path="/606B2804/61A1CA99" Ref="C?"  Part="1" 
AR Path="/606B5506/61A1CA99" Ref="C?"  Part="1" 
AR Path="/61A1CA99" Ref="C?"  Part="1" 
AR Path="/61A0DE56/61A1CA99" Ref="C75"  Part="1" 
F 0 "C75" H 1959 1954 50  0000 R CNN
F 1 "100 nF" H 1959 2045 50  0000 R CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 2050 2000 50  0001 C CNN
F 3 "~" H 2050 2000 50  0001 C CNN
F 4 "1276-1043-2-ND" H 2050 2000 50  0001 C CNN "Digikey"
	1    2050 2000
	1    0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 61A1CA9F
P 1600 2200
AR Path="/60355F25/61A1CA9F" Ref="#PWR?"  Part="1" 
AR Path="/60A88316/61A1CA9F" Ref="#PWR?"  Part="1" 
AR Path="/606B2804/61A1CA9F" Ref="#PWR?"  Part="1" 
AR Path="/606B5506/61A1CA9F" Ref="#PWR?"  Part="1" 
AR Path="/61A1CA9F" Ref="#PWR?"  Part="1" 
AR Path="/61A0DE56/61A1CA9F" Ref="#PWR0107"  Part="1" 
F 0 "#PWR0107" H 1600 1950 50  0001 C CNN
F 1 "GND" H 1605 2027 50  0000 C CNN
F 2 "" H 1600 2200 50  0001 C CNN
F 3 "" H 1600 2200 50  0001 C CNN
	1    1600 2200
	1    0    0    -1  
$EndComp
Wire Wire Line
	3000 1800 3000 1900
Wire Wire Line
	1600 1800 1600 1900
Wire Wire Line
	2050 1900 2050 1800
Wire Wire Line
	2500 1900 2500 1800
$Comp
L Device:C_Small C?
U 1 1 61A1CAAA
P 2500 2000
AR Path="/60355F25/61A1CAAA" Ref="C?"  Part="1" 
AR Path="/60A88316/61A1CAAA" Ref="C?"  Part="1" 
AR Path="/606B2804/61A1CAAA" Ref="C?"  Part="1" 
AR Path="/606B5506/61A1CAAA" Ref="C?"  Part="1" 
AR Path="/61A1CAAA" Ref="C?"  Part="1" 
AR Path="/61A0DE56/61A1CAAA" Ref="C76"  Part="1" 
F 0 "C76" H 2409 1954 50  0000 R CNN
F 1 "4.7 uF" H 2409 2045 50  0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2500 2000 50  0001 C CNN
F 3 "~" H 2500 2000 50  0001 C CNN
F 4 "1276-1904-2-ND" H 2500 2000 50  0001 C CNN "Digikey"
	1    2500 2000
	1    0    0    1   
$EndComp
$Comp
L Device:CP_Small C?
U 1 1 61A1CAB1
P 3000 2000
AR Path="/60355F25/61A1CAB1" Ref="C?"  Part="1" 
AR Path="/60A88316/61A1CAB1" Ref="C?"  Part="1" 
AR Path="/606B2804/61A1CAB1" Ref="C?"  Part="1" 
AR Path="/606B5506/61A1CAB1" Ref="C?"  Part="1" 
AR Path="/61A1CAB1" Ref="C?"  Part="1" 
AR Path="/61A0DE56/61A1CAB1" Ref="C77"  Part="1" 
F 0 "C77" H 3200 2050 50  0000 R CNN
F 1 "100 uF" H 3400 1950 50  0000 R CNN
F 2 "SaMcam_shield:CP_Elec_6.3x3" H 3000 2000 50  0001 C CNN
F 3 "~" H 3000 2000 50  0001 C CNN
F 4 "PCE3750CT-ND" H 3000 2000 50  0001 C CNN "Digikey"
	1    3000 2000
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1600 2200 1600 2100
Wire Wire Line
	1600 2200 2050 2200
Wire Wire Line
	3000 2200 3000 2100
Connection ~ 1600 2200
Wire Wire Line
	2500 2100 2500 2200
Connection ~ 2500 2200
Wire Wire Line
	2500 2200 3000 2200
Wire Wire Line
	2050 2100 2050 2200
Connection ~ 2050 2200
Wire Wire Line
	2050 2200 2500 2200
Wire Wire Line
	3650 2800 3650 1800
Wire Wire Line
	3650 1800 3000 1800
Connection ~ 2050 1800
Wire Wire Line
	2050 1800 1600 1800
Connection ~ 2500 1800
Wire Wire Line
	2500 1800 2050 1800
Connection ~ 3000 1800
Wire Wire Line
	3000 1800 2500 1800
Text Label 2700 3600 0    50   ~ 0
TX
Wire Wire Line
	2700 3600 3150 3600
Text Label 2700 3500 0    50   ~ 0
RX
Wire Wire Line
	2700 3500 3150 3500
$Comp
L power:+3V3 #PWR0106
U 1 1 61A37D2B
P 1600 1750
F 0 "#PWR0106" H 1600 1600 50  0001 C CNN
F 1 "+3V3" H 1615 1923 50  0000 C CNN
F 2 "" H 1600 1750 50  0001 C CNN
F 3 "" H 1600 1750 50  0001 C CNN
	1    1600 1750
	1    0    0    -1  
$EndComp
Wire Wire Line
	1600 1750 1600 1800
Connection ~ 1600 1800
$Comp
L power:GND #PWR?
U 1 1 61A49A8A
P 3650 4000
AR Path="/60355F25/61A49A8A" Ref="#PWR?"  Part="1" 
AR Path="/60A88316/61A49A8A" Ref="#PWR?"  Part="1" 
AR Path="/606B2804/61A49A8A" Ref="#PWR?"  Part="1" 
AR Path="/606B5506/61A49A8A" Ref="#PWR?"  Part="1" 
AR Path="/61A49A8A" Ref="#PWR?"  Part="1" 
AR Path="/61A0DE56/61A49A8A" Ref="#PWR0108"  Part="1" 
F 0 "#PWR0108" H 3650 3750 50  0001 C CNN
F 1 "GND" H 3655 3827 50  0000 C CNN
F 2 "" H 3650 4000 50  0001 C CNN
F 3 "" H 3650 4000 50  0001 C CNN
	1    3650 4000
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61A64512
P 5800 3800
AR Path="/60355F25/61A64512" Ref="R?"  Part="1" 
AR Path="/60A88316/61A64512" Ref="R?"  Part="1" 
AR Path="/61A64512" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61A64512" Ref="R53"  Part="1" 
F 0 "R53" V 5700 3800 50  0000 C CNN
F 1 "10.2 k" V 5900 3800 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5800 3800 50  0001 C CNN
F 3 "~" H 5800 3800 50  0001 C CNN
F 4 "YAG5252CT-ND" V 5800 3800 50  0001 C CNN "Digikey"
	1    5800 3800
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61A6490B
P 5800 4100
AR Path="/60355F25/61A6490B" Ref="R?"  Part="1" 
AR Path="/60A88316/61A6490B" Ref="R?"  Part="1" 
AR Path="/61A6490B" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61A6490B" Ref="R54"  Part="1" 
F 0 "R54" V 5700 4100 50  0000 C CNN
F 1 "10.2 k" V 5900 4100 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5800 4100 50  0001 C CNN
F 3 "~" H 5800 4100 50  0001 C CNN
F 4 "YAG5252CT-ND" V 5800 4100 50  0001 C CNN "Digikey"
	1    5800 4100
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61A64F1C
P 5800 4400
AR Path="/60355F25/61A64F1C" Ref="R?"  Part="1" 
AR Path="/60A88316/61A64F1C" Ref="R?"  Part="1" 
AR Path="/61A64F1C" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61A64F1C" Ref="R55"  Part="1" 
F 0 "R55" V 5700 4400 50  0000 C CNN
F 1 "10.2 k" V 5900 4400 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5800 4400 50  0001 C CNN
F 3 "~" H 5800 4400 50  0001 C CNN
F 4 "YAG5252CT-ND" V 5800 4400 50  0001 C CNN "Digikey"
	1    5800 4400
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61A652C1
P 5800 4700
AR Path="/60355F25/61A652C1" Ref="R?"  Part="1" 
AR Path="/60A88316/61A652C1" Ref="R?"  Part="1" 
AR Path="/61A652C1" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61A652C1" Ref="R56"  Part="1" 
F 0 "R56" V 5700 4700 50  0000 C CNN
F 1 "10.2 k" V 5900 4700 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5800 4700 50  0001 C CNN
F 3 "~" H 5800 4700 50  0001 C CNN
F 4 "YAG5252CT-ND" V 5800 4700 50  0001 C CNN "Digikey"
	1    5800 4700
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61A6576E
P 5800 5000
AR Path="/60355F25/61A6576E" Ref="R?"  Part="1" 
AR Path="/60A88316/61A6576E" Ref="R?"  Part="1" 
AR Path="/61A6576E" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61A6576E" Ref="R57"  Part="1" 
F 0 "R57" V 5700 5000 50  0000 C CNN
F 1 "10.2 k" V 5900 5000 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5800 5000 50  0001 C CNN
F 3 "~" H 5800 5000 50  0001 C CNN
F 4 "YAG5252CT-ND" V 5800 5000 50  0001 C CNN "Digikey"
	1    5800 5000
	0    1    1    0   
$EndComp
$Comp
L power:+3V3 #PWR0110
U 1 1 61A65C4C
P 5550 3750
F 0 "#PWR0110" H 5550 3600 50  0001 C CNN
F 1 "+3V3" H 5565 3923 50  0000 C CNN
F 2 "" H 5550 3750 50  0001 C CNN
F 3 "" H 5550 3750 50  0001 C CNN
	1    5550 3750
	1    0    0    -1  
$EndComp
Wire Wire Line
	5550 3750 5550 3800
Wire Wire Line
	5550 4700 5700 4700
Wire Wire Line
	5700 3800 5550 3800
Connection ~ 5550 3800
Wire Wire Line
	5550 3800 5550 4100
Wire Wire Line
	5700 4100 5550 4100
Connection ~ 5550 4100
Wire Wire Line
	5550 4100 5550 4400
Wire Wire Line
	5700 4400 5550 4400
Connection ~ 5550 4400
Wire Wire Line
	5550 4400 5550 4700
Text Label 6350 3800 2    50   ~ 0
GPIO0
Text Label 6350 4100 2    50   ~ 0
GPIO2
Text Label 6350 4400 2    50   ~ 0
EN
Text Label 6350 4700 2    50   ~ 0
~RST
Wire Wire Line
	5900 4400 6350 4400
Wire Wire Line
	5900 4100 6350 4100
Wire Wire Line
	5900 3800 6350 3800
$Comp
L power:GND #PWR?
U 1 1 61A6FA5D
P 5550 5250
AR Path="/60355F25/61A6FA5D" Ref="#PWR?"  Part="1" 
AR Path="/60A88316/61A6FA5D" Ref="#PWR?"  Part="1" 
AR Path="/606B2804/61A6FA5D" Ref="#PWR?"  Part="1" 
AR Path="/606B5506/61A6FA5D" Ref="#PWR?"  Part="1" 
AR Path="/61A6FA5D" Ref="#PWR?"  Part="1" 
AR Path="/61A0DE56/61A6FA5D" Ref="#PWR0111"  Part="1" 
F 0 "#PWR0111" H 5550 5000 50  0001 C CNN
F 1 "GND" H 5555 5077 50  0000 C CNN
F 2 "" H 5550 5250 50  0001 C CNN
F 3 "" H 5550 5250 50  0001 C CNN
	1    5550 5250
	1    0    0    -1  
$EndComp
Wire Wire Line
	5550 5250 5550 5000
Wire Wire Line
	5550 5000 5700 5000
Text Label 4600 3100 2    50   ~ 0
GPIO2
Text Label 2700 3000 0    50   ~ 0
EN
Wire Wire Line
	2700 3000 3150 3000
Text Label 4600 3700 2    50   ~ 0
CS
Wire Wire Line
	4150 3000 4600 3000
Wire Wire Line
	4600 3100 4150 3100
Wire Wire Line
	4600 3700 4150 3700
$Comp
L Device:C_Small C?
U 1 1 61A8AA55
P 6750 4900
AR Path="/60355F25/61A8AA55" Ref="C?"  Part="1" 
AR Path="/60A88316/61A8AA55" Ref="C?"  Part="1" 
AR Path="/606B2804/61A8AA55" Ref="C?"  Part="1" 
AR Path="/606B5506/61A8AA55" Ref="C?"  Part="1" 
AR Path="/61A0DE56/61A8AA55" Ref="C78"  Part="1" 
F 0 "C78" H 6659 4854 50  0000 R CNN
F 1 "470 pF" H 6659 4945 50  0000 R CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 6750 4900 50  0001 C CNN
F 3 "~" H 6750 4900 50  0001 C CNN
F 4 "490-6369-2-ND" H 6750 4900 50  0001 C CNN "Digikey"
	1    6750 4900
	-1   0    0    1   
$EndComp
Wire Wire Line
	5900 4700 6750 4700
$Comp
L power:GND #PWR?
U 1 1 61A8D0EF
P 6750 5250
AR Path="/60355F25/61A8D0EF" Ref="#PWR?"  Part="1" 
AR Path="/60A88316/61A8D0EF" Ref="#PWR?"  Part="1" 
AR Path="/606B2804/61A8D0EF" Ref="#PWR?"  Part="1" 
AR Path="/606B5506/61A8D0EF" Ref="#PWR?"  Part="1" 
AR Path="/61A8D0EF" Ref="#PWR?"  Part="1" 
AR Path="/61A0DE56/61A8D0EF" Ref="#PWR0112"  Part="1" 
F 0 "#PWR0112" H 6750 5000 50  0001 C CNN
F 1 "GND" H 6755 5077 50  0000 C CNN
F 2 "" H 6750 5250 50  0001 C CNN
F 3 "" H 6750 5250 50  0001 C CNN
	1    6750 5250
	1    0    0    -1  
$EndComp
Wire Wire Line
	6750 5000 6750 5250
Wire Wire Line
	6750 4700 6750 4800
Text Label 4600 3800 2    50   ~ 0
~RST
Wire Wire Line
	4600 3800 4150 3800
Text Label 2700 3300 0    50   ~ 0
ADC
Wire Wire Line
	2700 3300 3150 3300
Text Label 4600 3200 2    50   ~ 0
GPIO4
Text Label 4600 3300 2    50   ~ 0
GPIO5
Text Label 4600 3400 2    50   ~ 0
MISO
Text Label 4600 3500 2    50   ~ 0
MOSI
Text Label 4600 3600 2    50   ~ 0
CLK
Wire Wire Line
	4150 3600 4600 3600
Wire Wire Line
	4600 3500 4150 3500
Wire Wire Line
	4150 3400 4600 3400
Wire Wire Line
	4600 3300 4150 3300
Wire Wire Line
	4150 3200 4600 3200
Wire Wire Line
	5900 5000 6350 5000
Text Label 6350 5000 2    50   ~ 0
CS
Text HLabel 10050 1200 2    50   Input ~ 0
MISO_ESP
Text HLabel 10050 1400 2    50   Output ~ 0
MOSI_ESP
Text HLabel 10050 1600 2    50   Output ~ 0
CLK_ESP
Text HLabel 10050 1800 2    50   Output ~ 0
CS_ESP
Wire Notes Line
	8050 1950 10650 1950
Wire Notes Line
	10650 1950 10650 1050
Wire Notes Line
	10650 1050 8050 1050
Wire Notes Line
	8050 1050 8050 1950
Text Notes 8050 1050 0    50   ~ 0
SPI
Text Label 8200 1200 0    50   ~ 0
MISO
Text Label 8200 1400 0    50   ~ 0
MOSI
Text Label 8200 1600 0    50   ~ 0
CLK
Text Label 8200 1800 0    50   ~ 0
CS
$Comp
L Device:R_Small R?
U 1 1 61B1A750
P 8900 1200
AR Path="/61B1A750" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61B1A750" Ref="R60"  Part="1" 
F 0 "R60" V 8800 1200 50  0000 C CNN
F 1 "470R" V 8900 1200 31  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8900 1200 50  0001 C CNN
F 3 "~" H 8900 1200 50  0001 C CNN
F 4 "311-470LRTR-ND" V 8900 1200 50  0001 C CNN "Digikey"
	1    8900 1200
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61B1C6DB
P 8900 1400
AR Path="/61B1C6DB" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61B1C6DB" Ref="R61"  Part="1" 
F 0 "R61" V 8800 1400 50  0000 C CNN
F 1 "470R" V 8900 1400 31  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8900 1400 50  0001 C CNN
F 3 "~" H 8900 1400 50  0001 C CNN
F 4 "311-470LRTR-ND" V 8900 1400 50  0001 C CNN "Digikey"
	1    8900 1400
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61B1CA58
P 8900 1600
AR Path="/61B1CA58" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61B1CA58" Ref="R62"  Part="1" 
F 0 "R62" V 8800 1600 50  0000 C CNN
F 1 "470R" V 8900 1600 31  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8900 1600 50  0001 C CNN
F 3 "~" H 8900 1600 50  0001 C CNN
F 4 "311-470LRTR-ND" V 8900 1600 50  0001 C CNN "Digikey"
	1    8900 1600
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61B1CDAD
P 8900 1800
AR Path="/61B1CDAD" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61B1CDAD" Ref="R63"  Part="1" 
F 0 "R63" V 8800 1800 50  0000 C CNN
F 1 "470R" V 8900 1800 31  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8900 1800 50  0001 C CNN
F 3 "~" H 8900 1800 50  0001 C CNN
F 4 "311-470LRTR-ND" V 8900 1800 50  0001 C CNN "Digikey"
	1    8900 1800
	0    1    1    0   
$EndComp
Wire Wire Line
	9000 1200 10050 1200
Wire Wire Line
	9000 1400 10050 1400
Wire Wire Line
	9000 1600 10050 1600
Wire Wire Line
	9000 1800 10050 1800
Text HLabel 10050 2400 2    50   Input ~ 0
TX_ESP
Text HLabel 10050 2600 2    50   Output ~ 0
RX_ESP
Text HLabel 10050 2800 2    50   Output ~ 0
~DTR_ESP
Text HLabel 10050 3000 2    50   Output ~ 0
~RTS_ESP
Wire Notes Line
	8050 3150 10650 3150
Wire Notes Line
	10650 3150 10650 2250
Wire Notes Line
	10650 2250 8050 2250
Wire Notes Line
	8050 2250 8050 3150
Text Notes 8050 2250 0    50   ~ 0
Programming and debugging
Text Label 8250 2400 0    50   ~ 0
TX
Text Label 8250 2600 0    50   ~ 0
RX
Text Label 8250 2800 0    50   ~ 0
~DTR
$Comp
L Device:R_Small R?
U 1 1 61C235B4
P 8900 2600
AR Path="/61C235B4" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61C235B4" Ref="R65"  Part="1" 
F 0 "R65" V 8800 2600 50  0000 C CNN
F 1 "470R" V 8900 2600 31  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8900 2600 50  0001 C CNN
F 3 "~" H 8900 2600 50  0001 C CNN
F 4 "311-470LRTR-ND" V 8900 2600 50  0001 C CNN "Digikey"
	1    8900 2600
	0    1    1    0   
$EndComp
Wire Wire Line
	9000 2600 10050 2600
Wire Wire Line
	10050 2400 9000 2400
Text Label 8250 3000 0    50   ~ 0
~RTS
Text HLabel 10050 3650 2    50   BiDi ~ 0
GPIO4_ESP
Wire Notes Line
	8050 4000 10650 4000
Wire Notes Line
	10650 3450 8050 3450
Text Notes 8050 3450 0    50   ~ 0
Analog / digital IO
Text Label 8250 3650 0    50   ~ 0
GPIO4
Text HLabel 10050 3850 2    50   Input ~ 0
ADC_ESP
Text Label 8250 3850 0    50   ~ 0
ADC
$Comp
L power:GND #PWR?
U 1 1 61BF61CD
P 4400 5350
AR Path="/60C6E8D2/61BF61CD" Ref="#PWR?"  Part="1" 
AR Path="/61A0DE56/61BF61CD" Ref="#PWR0109"  Part="1" 
F 0 "#PWR0109" H 4400 5100 50  0001 C CNN
F 1 "GND" H 4405 5177 50  0000 C CNN
F 2 "" H 4400 5350 50  0001 C CNN
F 3 "" H 4400 5350 50  0001 C CNN
	1    4400 5350
	1    0    0    -1  
$EndComp
$Comp
L Device:LED_Small D?
U 1 1 61BF61D4
P 4400 4850
AR Path="/60355F25/61BF61D4" Ref="D?"  Part="1" 
AR Path="/60A88316/61BF61D4" Ref="D?"  Part="1" 
AR Path="/60C6E8D2/61BF61D4" Ref="D?"  Part="1" 
AR Path="/61A0DE56/61BF61D4" Ref="D25"  Part="1" 
F 0 "D25" V 4446 4780 50  0000 R CNN
F 1 "Blue" V 4355 4780 50  0000 R CNN
F 2 "LED_SMD:LED_0603_1608Metric" V 4400 4850 50  0001 C CNN
F 3 "~" V 4400 4850 50  0001 C CNN
F 4 "732-4966-2-ND" V 4400 4850 50  0001 C CNN "Digikey"
	1    4400 4850
	0    -1   -1   0   
$EndComp
$Comp
L Device:R_Small R?
U 1 1 61BF61DB
P 4400 5150
AR Path="/60355F25/61BF61DB" Ref="R?"  Part="1" 
AR Path="/60A88316/61BF61DB" Ref="R?"  Part="1" 
AR Path="/60C6E8D2/61BF61DB" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61BF61DB" Ref="R52"  Part="1" 
F 0 "R52" V 4600 5150 50  0000 C CNN
F 1 "100 R" V 4500 5150 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 4400 5150 50  0001 C CNN
F 3 "~" H 4400 5150 50  0001 C CNN
F 4 "RMCF0402FT100RTR-ND" V 4400 5150 50  0001 C CNN "Digikey"
	1    4400 5150
	-1   0    0    1   
$EndComp
Wire Wire Line
	4400 4950 4400 5050
Wire Wire Line
	4400 5250 4400 5350
Wire Notes Line
	10650 3450 10650 4000
Wire Notes Line
	8050 4000 8050 3450
Text Label 3900 4550 0    50   ~ 0
GPIO5
Wire Wire Line
	3900 4550 4400 4550
Wire Wire Line
	4400 4550 4400 4750
$Comp
L Device:R_Small R?
U 1 1 61C2234D
P 8900 2400
AR Path="/61C2234D" Ref="R?"  Part="1" 
AR Path="/61A0DE56/61C2234D" Ref="R64"  Part="1" 
F 0 "R64" V 8800 2400 50  0000 C CNN
F 1 "470R" V 8900 2400 31  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8900 2400 50  0001 C CNN
F 3 "~" H 8900 2400 50  0001 C CNN
F 4 "311-470LRTR-ND" V 8900 2400 50  0001 C CNN "Digikey"
	1    8900 2400
	0    1    1    0   
$EndComp
Text Notes 4700 4900 0    50   ~ 0
1 mA @ 3.2 V
Wire Wire Line
	8200 1600 8800 1600
Wire Wire Line
	8200 1400 8800 1400
Wire Wire Line
	8200 1200 8800 1200
Wire Wire Line
	8200 1800 8800 1800
Wire Wire Line
	8250 3000 10050 3000
Wire Wire Line
	8250 2800 10050 2800
Wire Wire Line
	8250 2600 8800 2600
Wire Wire Line
	8250 2400 8800 2400
Wire Wire Line
	8250 3850 10050 3850
Wire Wire Line
	8250 3650 10050 3650
$EndSCHEMATC