EESchema Schematic File Version 4
LIBS:esp32-sensornode-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "ESP32 Sensor Node with SI7021"
Date "2018-08-01"
Rev "2"
Comp "Jannik Beyerstedt"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Diode:1N4001 D1
U 1 1 5B5EF193
P 1450 5500
F 0 "D1" H 1450 5284 50  0000 C CNN
F 1 "1N5401" H 1450 5375 50  0000 C CNN
F 2 "Diode_THT:D_DO-201AD_P12.70mm_Horizontal" H 1450 5325 50  0001 C CNN
F 3 "http://www.vishay.com/docs/88503/1n4001.pdf" H 1450 5500 50  0001 C CNN
	1    1450 5500
	-1   0    0    1   
$EndComp
$Comp
L Sensor_Humidity:Si7020-A20 U2
U 1 1 5B5EF5BA
P 10150 1950
F 0 "U2" H 10350 1650 50  0000 L CNN
F 1 "Si7021-A20" H 10350 1550 50  0000 L CNN
F 2 "Package_DFN_QFN:DFN-6-1EP_3x3mm_P1mm_EP1.5x2.4mm" H 10150 1550 50  0001 C CNN
F 3 "https://www.silabs.com/documents/public/data-sheets/Si7020-A20.pdf" H 9950 2250 50  0001 C CNN
	1    10150 1950
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x06_Male J2
U 1 1 5B5EFFB5
P 7850 2850
F 0 "J2" H 7956 3228 50  0000 C CNN
F 1 "FTDI:GRN-BLK" H 7956 3137 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical" H 7850 2850 50  0001 C CNN
F 3 "~" H 7850 2850 50  0001 C CNN
	1    7850 2850
	-1   0    0    -1  
$EndComp
$Comp
L Device:Battery_Cell BT1
U 1 1 5B5F4F5C
P 750 6400
F 0 "BT1" H 868 6496 50  0000 L CNN
F 1 "18650 Li-Ion" H 868 6405 50  0000 L CNN
F 2 "JBeyerstedt-Library:BatteryHolder_COMF_BHC-18650-1" V 750 6460 50  0001 C CNN
F 3 "~" V 750 6460 50  0001 C CNN
	1    750  6400
	1    0    0    -1  
$EndComp
$Comp
L JBeyerstedt-Library:ESP32-WROOM U1
U 1 1 5B5F5158
P 5550 3050
F 0 "U1" H 5525 4437 60  0000 C CNN
F 1 "ESP32-WROOM" H 5525 4331 60  0000 C CNN
F 2 "JBeyerstedt-Library:ESP32-WROOM" H 5900 4400 60  0001 C CNN
F 3 "" H 5100 3500 60  0001 C CNN
	1    5550 3050
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x04_Female J3
U 1 1 5B5F555A
P 7850 1750
F 0 "J3" H 7877 1726 50  0000 L CNN
F 1 "SI7021:SDA-VIN" H 7877 1635 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 7850 1750 50  0001 C CNN
F 3 "~" H 7850 1750 50  0001 C CNN
	1    7850 1750
	1    0    0    -1  
$EndComp
$Comp
L Device:R R1
U 1 1 5B5F5773
P 3700 3050
F 0 "R1" H 3770 3096 50  0000 L CNN
F 1 "22K" H 3770 3005 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3630 3050 50  0001 C CNN
F 3 "~" H 3700 3050 50  0001 C CNN
	1    3700 3050
	1    0    0    -1  
$EndComp
$Comp
L Device:R R2
U 1 1 5B5F57E6
P 6000 4400
F 0 "R2" H 5930 4354 50  0000 R CNN
F 1 "22K" H 5930 4445 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5930 4400 50  0001 C CNN
F 3 "~" H 6000 4400 50  0001 C CNN
	1    6000 4400
	-1   0    0    1   
$EndComp
$Comp
L Device:R R6
U 1 1 5B5F5860
P 9900 3400
F 0 "R6" H 9970 3446 50  0000 L CNN
F 1 "3.3M" H 9970 3355 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 9830 3400 50  0001 C CNN
F 3 "~" H 9900 3400 50  0001 C CNN
	1    9900 3400
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x03_Male J4
U 1 1 5B5F59C4
P 7850 3750
F 0 "J4" H 7823 3773 50  0000 R CNN
F 1 "BOOT-EXEC" H 7823 3682 50  0000 R CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical" H 7850 3750 50  0001 C CNN
F 3 "~" H 7850 3750 50  0001 C CNN
	1    7850 3750
	-1   0    0    -1  
$EndComp
Text GLabel 3400 5950 2    50   Output ~ 0
VDD
$Comp
L power:GND #PWR011
U 1 1 5B5F5D9E
P 1450 6850
F 0 "#PWR011" H 1450 6600 50  0001 C CNN
F 1 "GND" H 1455 6677 50  0000 C CNN
F 2 "" H 1450 6850 50  0001 C CNN
F 3 "" H 1450 6850 50  0001 C CNN
	1    1450 6850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR03
U 1 1 5B5F5DE8
P 5100 4650
F 0 "#PWR03" H 5100 4400 50  0001 C CNN
F 1 "GND" H 5105 4477 50  0000 C CNN
F 2 "" H 5100 4650 50  0001 C CNN
F 3 "" H 5100 4650 50  0001 C CNN
	1    5100 4650
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR05
U 1 1 5B5F66D5
P 6750 2150
F 0 "#PWR05" H 6750 1900 50  0001 C CNN
F 1 "GND" H 6755 1977 50  0000 C CNN
F 2 "" H 6750 2150 50  0001 C CNN
F 3 "" H 6750 2150 50  0001 C CNN
	1    6750 2150
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR02
U 1 1 5B5F6760
P 3250 2250
F 0 "#PWR02" H 3250 2000 50  0001 C CNN
F 1 "GND" H 3255 2077 50  0000 C CNN
F 2 "" H 3250 2250 50  0001 C CNN
F 3 "" H 3250 2250 50  0001 C CNN
	1    3250 2250
	1    0    0    -1  
$EndComp
Wire Wire Line
	6450 2450 6550 2450
Wire Wire Line
	6550 2450 6550 2100
Wire Wire Line
	6550 2100 6750 2100
Wire Wire Line
	5100 4100 5100 4650
Text GLabel 3600 2800 0    50   UnSpc ~ 0
VDD
$Comp
L power:GND #PWR06
U 1 1 5B5F7496
P 7450 3150
F 0 "#PWR06" H 7450 2900 50  0001 C CNN
F 1 "GND" H 7455 2977 50  0000 C CNN
F 2 "" H 7450 3150 50  0001 C CNN
F 3 "" H 7450 3150 50  0001 C CNN
	1    7450 3150
	1    0    0    -1  
$EndComp
Wire Wire Line
	7650 3750 7200 3750
$Comp
L power:GND #PWR08
U 1 1 5B5F7BAE
P 7450 3850
F 0 "#PWR08" H 7450 3600 50  0001 C CNN
F 1 "GND" H 7455 3677 50  0000 C CNN
F 2 "" H 7450 3850 50  0001 C CNN
F 3 "" H 7450 3850 50  0001 C CNN
	1    7450 3850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR07
U 1 1 5B5F7C2E
P 7450 2000
F 0 "#PWR07" H 7450 1750 50  0001 C CNN
F 1 "GND" H 7455 1827 50  0000 C CNN
F 2 "" H 7450 2000 50  0001 C CNN
F 3 "" H 7450 2000 50  0001 C CNN
	1    7450 2000
	1    0    0    -1  
$EndComp
Text GLabel 7450 1650 0    50   UnSpc ~ 0
VDD
Wire Wire Line
	7650 3150 7450 3150
Wire Wire Line
	7650 3850 7450 3850
Text GLabel 7450 3650 0    50   UnSpc ~ 0
VDD
Wire Wire Line
	7650 3650 7450 3650
$Comp
L Device:R R3
U 1 1 5B5FD2E5
P 7050 3750
F 0 "R3" V 6843 3750 50  0000 C CNN
F 1 "22K" V 6934 3750 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 6980 3750 50  0001 C CNN
F 3 "~" H 7050 3750 50  0001 C CNN
	1    7050 3750
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR04
U 1 1 5B6001C1
P 6000 4650
F 0 "#PWR04" H 6000 4400 50  0001 C CNN
F 1 "GND" H 6005 4477 50  0000 C CNN
F 2 "" H 6000 4650 50  0001 C CNN
F 3 "" H 6000 4650 50  0001 C CNN
	1    6000 4650
	1    0    0    -1  
$EndComp
Wire Wire Line
	6000 4100 6000 4250
Wire Wire Line
	6000 4550 6000 4650
$Comp
L power:GND #PWR09
U 1 1 5B601E2F
P 8050 6200
F 0 "#PWR09" H 8050 5950 50  0001 C CNN
F 1 "GND" H 8055 6027 50  0000 C CNN
F 2 "" H 8050 6200 50  0001 C CNN
F 3 "" H 8050 6200 50  0001 C CNN
	1    8050 6200
	1    0    0    -1  
$EndComp
Text GLabel 7300 5300 0    50   Input ~ 0
VDD
$Comp
L Device:C C1
U 1 1 5B6101CB
P 3700 3450
F 0 "C1" H 3815 3496 50  0000 L CNN
F 1 "1n" H 3815 3405 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 3738 3300 50  0001 C CNN
F 3 "~" H 3700 3450 50  0001 C CNN
	1    3700 3450
	1    0    0    -1  
$EndComp
$Comp
L Device:C C3
U 1 1 5B610407
P 2400 6350
F 0 "C3" H 2515 6396 50  0000 L CNN
F 1 "1u" H 2515 6305 50  0000 L CNN
F 2 "Capacitor_THT:C_Rect_L4.6mm_W3.8mm_P2.50mm_MKS02_FKP02" H 2438 6200 50  0001 C CNN
F 3 "~" H 2400 6350 50  0001 C CNN
	1    2400 6350
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5B61048F
P 10900 1950
F 0 "C2" H 11015 1996 50  0000 L CNN
F 1 "0.1u" H 11015 1905 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 10938 1800 50  0001 C CNN
F 3 "~" H 10900 1950 50  0001 C CNN
	1    10900 1950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR01
U 1 1 5B61A48C
P 3700 3700
F 0 "#PWR01" H 3700 3450 50  0001 C CNN
F 1 "GND" H 3705 3527 50  0000 C CNN
F 2 "" H 3700 3700 50  0001 C CNN
F 3 "" H 3700 3700 50  0001 C CNN
	1    3700 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3700 3250 3700 3300
Wire Wire Line
	3700 3250 3700 3200
Connection ~ 3700 3250
Wire Wire Line
	3700 2900 3700 2800
Wire Wire Line
	3700 2800 3600 2800
$Comp
L Device:R R7
U 1 1 5B628838
P 9900 3800
F 0 "R7" H 9970 3846 50  0000 L CNN
F 1 "1M" H 9970 3755 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 9830 3800 50  0001 C CNN
F 3 "~" H 9900 3800 50  0001 C CNN
	1    9900 3800
	1    0    0    -1  
$EndComp
Text GLabel 4600 2750 0    50   Input ~ 0
BAT_SENS
Text GLabel 9700 3600 0    50   Output ~ 0
BAT_SENS
Text GLabel 9050 1400 0    50   Input ~ 0
VDD
Text GLabel 9700 3150 0    50   UnSpc ~ 0
BAT
$Comp
L power:GND #PWR010
U 1 1 5B62C522
P 10050 2450
F 0 "#PWR010" H 10050 2200 50  0001 C CNN
F 1 "GND" H 10055 2277 50  0000 C CNN
F 2 "" H 10050 2450 50  0001 C CNN
F 3 "" H 10050 2450 50  0001 C CNN
	1    10050 2450
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR012
U 1 1 5B62C54F
P 9900 4050
F 0 "#PWR012" H 9900 3800 50  0001 C CNN
F 1 "GND" H 9905 3877 50  0000 C CNN
F 2 "" H 9900 4050 50  0001 C CNN
F 3 "" H 9900 4050 50  0001 C CNN
	1    9900 4050
	1    0    0    -1  
$EndComp
Wire Wire Line
	9900 3250 9900 3150
Wire Wire Line
	9900 3150 9700 3150
Wire Wire Line
	9700 3600 9900 3600
Wire Wire Line
	9900 3600 9900 3550
Wire Wire Line
	9900 3600 9900 3650
Connection ~ 9900 3600
Wire Wire Line
	9900 3950 9900 4000
$Comp
L Device:R R5
U 1 1 5B640572
P 9500 1650
F 0 "R5" H 9570 1696 50  0000 L CNN
F 1 "22K" H 9570 1605 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 9430 1650 50  0001 C CNN
F 3 "~" H 9500 1650 50  0001 C CNN
	1    9500 1650
	1    0    0    -1  
$EndComp
$Comp
L Device:R R4
U 1 1 5B6405FC
P 9200 1650
F 0 "R4" H 9270 1696 50  0000 L CNN
F 1 "22K" H 9270 1605 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 9130 1650 50  0001 C CNN
F 3 "~" H 9200 1650 50  0001 C CNN
	1    9200 1650
	1    0    0    -1  
$EndComp
Wire Wire Line
	9500 1850 9500 1800
Wire Wire Line
	9200 1500 9200 1400
Connection ~ 9200 1400
Wire Wire Line
	9200 1400 9500 1400
Wire Wire Line
	9500 1500 9500 1400
Connection ~ 9500 1400
Wire Wire Line
	9500 1400 10150 1400
Wire Wire Line
	9650 2050 9200 2050
Wire Wire Line
	9200 2050 9200 1800
Text Label 7600 2750 0    50   ~ 0
TX
Text Label 7500 2850 0    50   ~ 0
RX
$Comp
L Switch:SW_Push SW1
U 1 1 5B61DE7C
P 3300 3250
F 0 "SW1" H 3300 3535 50  0000 C CNN
F 1 "EN" H 3300 3444 50  0000 C CNN
F 2 "Button_Switch_THT:SW_PUSH_6mm" H 3300 3450 50  0001 C CNN
F 3 "" H 3300 3450 50  0001 C CNN
	1    3300 3250
	1    0    0    -1  
$EndComp
Wire Wire Line
	3100 3250 2950 3250
$Comp
L Device:R R8
U 1 1 5B64D8D2
P 2950 3450
F 0 "R8" H 3020 3496 50  0000 L CNN
F 1 "47R" H 3020 3405 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2880 3450 50  0001 C CNN
F 3 "~" H 2950 3450 50  0001 C CNN
	1    2950 3450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2950 3250 2950 3300
Wire Wire Line
	2950 3600 2950 3650
$Comp
L Device:C C4
U 1 1 5B668915
P 10250 3800
F 0 "C4" H 10365 3846 50  0000 L CNN
F 1 "0.1u" H 10365 3755 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 10288 3650 50  0001 C CNN
F 3 "~" H 10250 3800 50  0001 C CNN
	1    10250 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	9900 3600 10250 3600
Wire Wire Line
	10250 3600 10250 3650
Wire Wire Line
	10250 3950 10250 4000
Wire Wire Line
	10250 4000 9900 4000
Connection ~ 9900 4000
Wire Wire Line
	9900 4000 9900 4050
$Comp
L JBeyerstedt-Library:JTAG_ESP32 J1
U 1 1 5B6839CC
P 7650 5750
F 0 "J1" H 7700 6275 50  0000 C CNN
F 1 "JTAG_ESP32" H 7700 6184 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x07_P2.54mm_Vertical" H 7650 5750 50  0001 C CNN
F 3 "~" H 7650 5750 50  0001 C CNN
	1    7650 5750
	1    0    0    -1  
$EndComp
Wire Wire Line
	7350 5450 7450 5450
Wire Wire Line
	7950 5550 8050 5550
Wire Wire Line
	8050 5550 8050 5650
Wire Wire Line
	8050 6050 7950 6050
Wire Wire Line
	8050 5950 7950 5950
Connection ~ 8050 5950
Wire Wire Line
	8050 5950 8050 6050
Wire Wire Line
	7950 5850 8050 5850
Connection ~ 8050 5850
Wire Wire Line
	8050 5850 8050 5950
Wire Wire Line
	7950 5750 8050 5750
Connection ~ 8050 5750
Wire Wire Line
	8050 5750 8050 5850
Wire Wire Line
	7950 5650 8050 5650
Connection ~ 8050 5650
Wire Wire Line
	8050 5650 8050 5750
Wire Wire Line
	8050 6200 8050 6150
Connection ~ 8050 6050
Wire Wire Line
	7450 6050 5900 6050
Wire Wire Line
	7450 5950 7350 5950
Wire Wire Line
	7350 5950 7350 6150
Wire Wire Line
	7350 6150 8050 6150
Connection ~ 8050 6150
Wire Wire Line
	8050 6150 8050 6050
Wire Wire Line
	7450 5850 5200 5850
Wire Wire Line
	7300 5300 7350 5300
Wire Wire Line
	7350 5300 7350 5450
Connection ~ 2400 6750
Wire Wire Line
	3700 3600 3700 3650
Wire Wire Line
	3500 3250 3700 3250
Wire Wire Line
	2950 3650 3700 3650
Connection ~ 3700 3650
Wire Wire Line
	3700 3650 3700 3700
Text GLabel 8900 1850 0    50   Input ~ 0
SDA
Text GLabel 8900 2050 0    50   Input ~ 0
SCL
Connection ~ 9500 1850
Wire Wire Line
	9500 1850 9650 1850
Text GLabel 6450 2950 2    50   Input ~ 0
SDA
Text GLabel 6450 2650 2    50   Input ~ 0
SCL
Text GLabel 7350 1850 0    50   Input ~ 0
SCL
Text GLabel 7350 1950 0    50   Input ~ 0
SDA
Wire Wire Line
	9200 2050 8900 2050
Connection ~ 9200 2050
Wire Wire Line
	7350 1850 7650 1850
Wire Wire Line
	7650 1950 7350 1950
Wire Wire Line
	7450 2000 7450 1750
Wire Wire Line
	7450 1750 7650 1750
Wire Wire Line
	7450 1650 7650 1650
Wire Wire Line
	6450 3750 6900 3750
Wire Wire Line
	6450 2850 7650 2850
Wire Wire Line
	6450 2750 7650 2750
Text Label 6550 3750 0    50   ~ 0
BOOT
Wire Wire Line
	5200 4100 5200 5850
Wire Wire Line
	5900 4100 5900 6050
Wire Wire Line
	4400 3750 4400 5650
Wire Wire Line
	4250 3650 4250 5750
Wire Wire Line
	4250 5750 7450 5750
Wire Wire Line
	4400 5650 7450 5650
Wire Wire Line
	4100 5550 7450 5550
Wire Wire Line
	4250 3650 4600 3650
Wire Wire Line
	4400 3750 4600 3750
Wire Wire Line
	4100 2650 4600 2650
Wire Wire Line
	6750 2100 6750 2150
$Comp
L Device:CP C5
U 1 1 5B6383FA
P 2850 6350
F 0 "C5" H 2968 6396 50  0000 L CNN
F 1 "100u" H 2968 6305 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 2888 6200 50  0001 C CNN
F 3 "~" H 2850 6350 50  0001 C CNN
	1    2850 6350
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C6
U 1 1 5B63868C
P 3300 6350
F 0 "C6" H 3418 6396 50  0000 L CNN
F 1 "470u" H 3418 6305 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 3338 6200 50  0001 C CNN
F 3 "~" H 3300 6350 50  0001 C CNN
	1    3300 6350
	1    0    0    -1  
$EndComp
Wire Wire Line
	2850 6750 3300 6750
Connection ~ 2850 6750
Wire Wire Line
	2400 6750 2850 6750
Text GLabel 3150 1800 0    50   UnSpc ~ 0
VDD
Wire Wire Line
	3700 3250 4100 3250
$Comp
L Device:C C7
U 1 1 5B68C40C
P 3250 2000
F 0 "C7" H 3365 2046 50  0000 L CNN
F 1 "4.7u" H 3365 1955 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 3288 1850 50  0001 C CNN
F 3 "~" H 3250 2000 50  0001 C CNN
	1    3250 2000
	1    0    0    -1  
$EndComp
$Comp
L Device:C C8
U 1 1 5B6A7422
P 3700 2000
F 0 "C8" H 3815 2046 50  0000 L CNN
F 1 "0.01u" H 3815 1955 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 3738 1850 50  0001 C CNN
F 3 "~" H 3700 2000 50  0001 C CNN
	1    3700 2000
	1    0    0    -1  
$EndComp
$Comp
L Device:C C9
U 1 1 5B6A7469
P 4150 2000
F 0 "C9" H 4265 2046 50  0000 L CNN
F 1 "0.1u" H 4265 1955 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4188 1850 50  0001 C CNN
F 3 "~" H 4150 2000 50  0001 C CNN
	1    4150 2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3250 2150 3250 2200
Wire Wire Line
	3250 2200 3700 2200
Wire Wire Line
	3700 2200 3700 2150
Connection ~ 3250 2200
Wire Wire Line
	3250 2200 3250 2250
Wire Wire Line
	4150 2200 4150 2150
Wire Wire Line
	3700 2200 4150 2200
Connection ~ 3700 2200
Wire Wire Line
	4600 2550 4500 2550
Wire Wire Line
	4600 2450 4400 2450
Wire Wire Line
	4400 2200 4150 2200
Connection ~ 4150 2200
Wire Wire Line
	4500 1800 4150 1800
Wire Wire Line
	4150 1800 4150 1850
Wire Wire Line
	4150 1800 3700 1800
Wire Wire Line
	3700 1800 3700 1850
Connection ~ 4150 1800
Wire Wire Line
	3250 1800 3250 1850
Wire Wire Line
	3250 1800 3150 1800
Connection ~ 3250 1800
Wire Wire Line
	3250 1800 3700 1800
Connection ~ 3700 1800
Wire Wire Line
	4100 2650 4100 3250
Wire Wire Line
	4100 3250 4100 5550
Connection ~ 4100 3250
Wire Wire Line
	4400 2200 4400 2450
Wire Wire Line
	4500 1800 4500 2550
NoConn ~ 7650 2950
NoConn ~ 7650 3050
NoConn ~ 7650 2650
NoConn ~ 6450 3150
NoConn ~ 6450 3250
NoConn ~ 6450 3350
NoConn ~ 6450 3450
NoConn ~ 6450 3550
NoConn ~ 6450 3650
NoConn ~ 6450 2550
NoConn ~ 6450 2350
NoConn ~ 4600 2850
NoConn ~ 4600 2950
NoConn ~ 4600 3050
NoConn ~ 4600 3150
NoConn ~ 4600 3250
NoConn ~ 4600 3350
NoConn ~ 4600 3450
NoConn ~ 4600 3550
NoConn ~ 5300 4100
NoConn ~ 5400 4100
NoConn ~ 5500 4100
NoConn ~ 5600 4100
NoConn ~ 5700 4100
NoConn ~ 5800 4100
NoConn ~ 10250 2250
Wire Wire Line
	10050 2400 10050 2450
Wire Wire Line
	10150 1650 10150 1400
Wire Wire Line
	10900 2400 10050 2400
Connection ~ 10050 2400
Wire Wire Line
	10900 1800 10900 1400
Wire Wire Line
	10900 1400 10150 1400
Connection ~ 10150 1400
Wire Wire Line
	8900 1850 9500 1850
Wire Wire Line
	10050 2250 10050 2400
Wire Wire Line
	9050 1400 9200 1400
Wire Wire Line
	10900 2100 10900 2400
$Comp
L Regulator_Linear:TC1262-33 U3
U 1 1 5B68D0BE
P 1450 5950
F 0 "U3" H 1450 6192 50  0000 C CNN
F 1 "TC1262-33" H 1450 6101 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-223-3_TabPin2" H 1450 6175 50  0001 C CIN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21373C.pdf" H 1450 5650 50  0001 C CNN
	1    1450 5950
	1    0    0    -1  
$EndComp
$Comp
L Device:C C10
U 1 1 5B68D194
P 1850 6100
F 0 "C10" H 1965 6146 50  0000 L CNN
F 1 "1u" H 1965 6055 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 1888 5950 50  0001 C CNN
F 3 "~" H 1850 6100 50  0001 C CNN
	1    1850 6100
	1    0    0    -1  
$EndComp
Wire Wire Line
	1750 5950 1850 5950
Wire Wire Line
	1450 6250 1850 6250
Wire Wire Line
	1450 6250 1450 6750
Connection ~ 1450 6250
Wire Wire Line
	750  6500 750  6750
Wire Wire Line
	750  6750 1450 6750
Connection ~ 1450 6750
Wire Wire Line
	750  6200 750  5950
Wire Wire Line
	750  5950 1150 5950
Text Notes 1700 5400 0    50   ~ 0
(as alternative solution to TC1262)
Wire Wire Line
	1450 6750 1450 6850
Wire Wire Line
	3300 6200 3300 5950
Wire Wire Line
	3300 5950 3400 5950
Wire Wire Line
	3300 5950 2850 5950
Wire Wire Line
	2850 5950 2850 6200
Connection ~ 3300 5950
Wire Wire Line
	2400 5950 2400 6200
Wire Wire Line
	2400 5950 2850 5950
Connection ~ 2850 5950
Connection ~ 2400 5950
Wire Wire Line
	2400 6500 2400 6750
Wire Wire Line
	2850 6500 2850 6750
Wire Wire Line
	3300 6500 3300 6750
Wire Wire Line
	1850 5950 2150 5950
Connection ~ 1850 5950
Wire Wire Line
	1450 6750 2400 6750
Wire Wire Line
	1600 5500 2150 5500
Wire Wire Line
	2150 5500 2150 5950
Connection ~ 2150 5950
Wire Wire Line
	2150 5950 2400 5950
Wire Wire Line
	1300 5500 750  5500
Wire Wire Line
	750  5500 750  5950
Connection ~ 750  5950
Text GLabel 800  5200 2    50   UnSpc ~ 0
BAT
Wire Wire Line
	750  5500 750  5200
Wire Wire Line
	750  5200 800  5200
Connection ~ 750  5500
$EndSCHEMATC