EESchema Schematic File Version 4
LIBS:weather_station_pcb-cache
EELAYER 26 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L weather_station_pcb-rescue:ESP-12E-ESP_8266 U4
U 1 1 5D97542B
P 7750 1800
F 0 "U4" H 7750 2565 50  0000 C CNN
F 1 "ESP-12E" H 7750 2474 50  0000 C CNN
F 2 "ESP8266:ESP-12E_SMD" H 7750 1800 50  0001 C CNN
F 3 "http://l0l.org.uk/2014/12/esp8266-modules-hardware-guide-gotta-catch-em-all/" H 7750 1800 50  0001 C CNN
	1    7750 1800
	1    0    0    -1  
$EndComp
$Comp
L Sensor:BME280 U1
U 1 1 5D975A14
P 4350 1850
F 0 "U1" H 3921 1896 50  0000 R CNN
F 1 "BME280" H 3921 1805 50  0000 R CNN
F 2 "Package_LGA:Bosch_LGA-8_2.5x2.5mm_P0.65mm_ClockwisePinNumbering" H 5850 1400 50  0001 C CNN
F 3 "https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280-DS002.pdf" H 4350 1650 50  0001 C CNN
	1    4350 1850
	1    0    0    -1  
$EndComp
$Comp
L Connector:USB_B_Micro J3
U 1 1 5D976754
P 850 2500
F 0 "J3" H 907 2967 50  0000 C CNN
F 1 "USB_B_Micro" H 907 2876 50  0000 C CNN
F 2 "Connector_USB:USB_Micro-B_Molex-105017-0001" H 1000 2450 50  0001 C CNN
F 3 "~" H 1000 2450 50  0001 C CNN
	1    850  2500
	1    0    0    -1  
$EndComp
$Comp
L Switch:SW_Push SW1
U 1 1 5D977D56
P 2700 7100
F 0 "SW1" V 2746 7052 50  0000 R CNN
F 1 "RESET" V 2655 7052 50  0000 R CNN
F 2 "Button_Switch_SMD:SW_SPST_EVQQ2" H 2700 7300 50  0001 C CNN
F 3 "~" H 2700 7300 50  0001 C CNN
	1    2700 7100
	-1   0    0    1   
$EndComp
$Comp
L Transistor_BJT:MBT2222ADW1T1 Q1
U 1 1 5D978837
P 10100 2100
F 0 "Q1" H 10291 2146 50  0000 L CNN
F 1 "MBT2222ADW1T1" H 9450 1950 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-363_SC-70-6_Handsoldering" H 10300 2200 50  0001 C CNN
F 3 "http://www.onsemi.com/pub_link/Collateral/MBT2222ADW1T1-D.PDF" H 10100 2100 50  0001 C CNN
	1    10100 2100
	1    0    0    -1  
$EndComp
$Comp
L Transistor_BJT:MBT2222ADW1T1 Q1
U 2 1 5D9791FF
P 9400 2700
F 0 "Q1" H 9591 2654 50  0000 L CNN
F 1 "MBT2222ADW1T1" H 8700 2850 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-363_SC-70-6_Handsoldering" H 9600 2800 50  0001 C CNN
F 3 "http://www.onsemi.com/pub_link/Collateral/MBT2222ADW1T1-D.PDF" H 9400 2700 50  0001 C CNN
	2    9400 2700
	-1   0    0    1   
$EndComp
Text Label 6850 1500 2    50   ~ 0
RESET
Text Label 6850 1600 2    50   ~ 0
ADC
Text Label 6850 1700 2    50   ~ 0
CH_PD
Text Label 6850 1800 2    50   ~ 0
GPIO16
Text Label 8650 1700 0    50   ~ 0
SCL
Text Label 8650 1800 0    50   ~ 0
SDA
Text Label 8650 1500 0    50   ~ 0
TXD
Text Label 8650 1600 0    50   ~ 0
RXD
Text Label 8650 1900 0    50   ~ 0
GPIO0
Text Label 8650 2000 0    50   ~ 0
GPIO2
Text Label 8650 2100 0    50   ~ 0
GPIO15
Text Label 6850 1900 2    50   ~ 0
GPIO14
Text Label 6850 2000 2    50   ~ 0
GPIO12
Text Label 6850 2100 2    50   ~ 0
GPIO13
$Comp
L power:+3.3V #PWR039
U 1 1 5D98CF3C
P 6400 2200
F 0 "#PWR039" H 6400 2050 50  0001 C CNN
F 1 "+3.3V" H 6415 2373 50  0000 C CNN
F 2 "" H 6400 2200 50  0001 C CNN
F 3 "" H 6400 2200 50  0001 C CNN
	1    6400 2200
	1    0    0    -1  
$EndComp
Wire Wire Line
	6400 2200 6500 2200
$Comp
L power:GND #PWR050
U 1 1 5D98DA48
P 8650 2200
F 0 "#PWR050" H 8650 1950 50  0001 C CNN
F 1 "GND" H 8655 2027 50  0000 C CNN
F 2 "" H 8650 2200 50  0001 C CNN
F 3 "" H 8650 2200 50  0001 C CNN
	1    8650 2200
	1    0    0    -1  
$EndComp
NoConn ~ 8000 2700
NoConn ~ 7900 2700
NoConn ~ 7800 2700
NoConn ~ 7700 2700
NoConn ~ 7600 2700
NoConn ~ 7500 2700
$Comp
L Device:R_Small R14
U 1 1 5D98E88F
P 8950 1500
F 0 "R14" H 8891 1454 50  0000 R CNN
F 1 "1K" H 8891 1545 50  0000 R CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 8950 1500 50  0001 C CNN
F 3 "~" H 8950 1500 50  0001 C CNN
	1    8950 1500
	-1   0    0    1   
$EndComp
Wire Wire Line
	8950 1600 8650 1600
Text Label 8950 1250 2    50   ~ 0
USB_RX
Wire Wire Line
	8950 1250 8950 1400
$Comp
L Device:R_Small R15
U 1 1 5D9932F8
P 9400 1350
F 0 "R15" H 9341 1304 50  0000 R CNN
F 1 "10K" H 9341 1395 50  0000 R CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 9400 1350 50  0001 C CNN
F 3 "~" H 9400 1350 50  0001 C CNN
	1    9400 1350
	-1   0    0    1   
$EndComp
$Comp
L Device:R_Small R17
U 1 1 5D993581
P 9700 1350
F 0 "R17" H 9641 1304 50  0000 R CNN
F 1 "10K" H 9641 1395 50  0000 R CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 9700 1350 50  0001 C CNN
F 3 "~" H 9700 1350 50  0001 C CNN
	1    9700 1350
	-1   0    0    1   
$EndComp
$Comp
L Device:R_Small R19
U 1 1 5D9937C2
P 10000 1450
F 0 "R19" H 9941 1404 50  0000 R CNN
F 1 "4.7K" H 9941 1495 50  0000 R CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 10000 1450 50  0001 C CNN
F 3 "~" H 10000 1450 50  0001 C CNN
	1    10000 1450
	-1   0    0    1   
$EndComp
$Comp
L power:+3.3V #PWR051
U 1 1 5D9940A7
P 9400 1250
F 0 "#PWR051" H 9400 1100 50  0001 C CNN
F 1 "+3.3V" H 9415 1423 50  0000 C CNN
F 2 "" H 9400 1250 50  0001 C CNN
F 3 "" H 9400 1250 50  0001 C CNN
	1    9400 1250
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR053
U 1 1 5D9944B0
P 9700 1250
F 0 "#PWR053" H 9700 1100 50  0001 C CNN
F 1 "+3.3V" H 9715 1423 50  0000 C CNN
F 2 "" H 9700 1250 50  0001 C CNN
F 3 "" H 9700 1250 50  0001 C CNN
	1    9700 1250
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR054
U 1 1 5D9947E1
P 10000 1550
F 0 "#PWR054" H 10000 1300 50  0001 C CNN
F 1 "GND" H 10005 1377 50  0000 C CNN
F 2 "" H 10000 1550 50  0001 C CNN
F 3 "" H 10000 1550 50  0001 C CNN
	1    10000 1550
	1    0    0    -1  
$EndComp
Text Label 9400 1700 1    50   ~ 0
GPIO2
Text Label 9700 1700 1    50   ~ 0
CH_PD
Text Label 10000 1050 3    50   ~ 0
GPIO15
Wire Wire Line
	10000 1050 10000 1350
Wire Wire Line
	9700 1450 9700 1700
Wire Wire Line
	9400 1450 9400 1700
$Comp
L Device:R_Small R16
U 1 1 5D9A3BC8
P 9650 2100
F 0 "R16" V 9846 2100 50  0000 C CNN
F 1 "10K" V 9755 2100 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 9650 2100 50  0001 C CNN
F 3 "~" H 9650 2100 50  0001 C CNN
	1    9650 2100
	0    -1   -1   0   
$EndComp
$Comp
L Device:R_Small R18
U 1 1 5D9A3F82
P 9850 2700
F 0 "R18" V 10046 2700 50  0000 C CNN
F 1 "10K" V 9955 2700 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 9850 2700 50  0001 C CNN
F 3 "~" H 9850 2700 50  0001 C CNN
	1    9850 2700
	0    -1   -1   0   
$EndComp
Wire Wire Line
	9750 2700 9600 2700
Wire Wire Line
	9750 2100 9900 2100
Wire Wire Line
	10200 2300 10200 2700
Wire Wire Line
	10200 2700 9950 2700
Text Label 10200 2700 0    50   ~ 0
DTR
Text Label 10200 1900 0    50   ~ 0
GPIO0
Text Label 9300 2900 3    50   ~ 0
RESET
Wire Wire Line
	9300 2500 9300 2100
Wire Wire Line
	9300 2100 9550 2100
Text Label 9300 2100 2    50   ~ 0
RTS
Text Notes 9150 800  2    79   ~ 0
ESP8266 Module + Auto-Reset
Wire Notes Line
	6150 3300 6150 550 
$Comp
L power:GND #PWR019
U 1 1 5D9B9DC6
P 2900 7100
F 0 "#PWR019" H 2900 6850 50  0001 C CNN
F 1 "GND" H 2905 6927 50  0000 C CNN
F 2 "" H 2900 7100 50  0001 C CNN
F 3 "" H 2900 7100 50  0001 C CNN
	1    2900 7100
	0    -1   -1   0   
$EndComp
$Comp
L Device:R_Small R2
U 1 1 5D9BCEA3
P 2050 7100
F 0 "R2" H 1991 7054 50  0000 R CNN
F 1 "10K" H 1991 7145 50  0000 R CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 2050 7100 50  0001 C CNN
F 3 "~" H 2050 7100 50  0001 C CNN
	1    2050 7100
	0    1    1    0   
$EndComp
$Comp
L power:+3.3V #PWR012
U 1 1 5D9BD5D9
P 1950 7100
F 0 "#PWR012" H 1950 6950 50  0001 C CNN
F 1 "+3.3V" H 1965 7273 50  0000 C CNN
F 2 "" H 1950 7100 50  0001 C CNN
F 3 "" H 1950 7100 50  0001 C CNN
	1    1950 7100
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2150 7100 2500 7100
Text Label 2400 7100 2    50   ~ 0
RESET
$Comp
L power:+3.3V #PWR020
U 1 1 5D9C2DCD
P 3600 1250
F 0 "#PWR020" H 3600 1100 50  0001 C CNN
F 1 "+3.3V" H 3615 1423 50  0000 C CNN
F 2 "" H 3600 1250 50  0001 C CNN
F 3 "" H 3600 1250 50  0001 C CNN
	1    3600 1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	4250 1250 4450 1250
Connection ~ 4250 1250
Wire Wire Line
	4450 2450 4250 2450
$Comp
L power:GND #PWR025
U 1 1 5D9C4043
P 4250 2450
F 0 "#PWR025" H 4250 2200 50  0001 C CNN
F 1 "GND" H 4255 2277 50  0000 C CNN
F 2 "" H 4250 2450 50  0001 C CNN
F 3 "" H 4250 2450 50  0001 C CNN
	1    4250 2450
	1    0    0    -1  
$EndComp
Connection ~ 4250 2450
Text Notes 4550 2650 0    50   ~ 0
Set I2C address with \nsolder jumper:\n  BRIDGED: 0x76\n  OPEN: 0x77\n
Text Label 4950 1750 0    50   ~ 0
SCL
Text Label 4950 1950 0    50   ~ 0
SDA
$Comp
L Device:R_Small R8
U 1 1 5D9C856A
P 5050 2150
F 0 "R8" V 4950 2150 50  0000 C CNN
F 1 "10K" V 5150 2150 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 5050 2150 50  0001 C CNN
F 3 "~" H 5050 2150 50  0001 C CNN
	1    5050 2150
	0    1    1    0   
$EndComp
$Comp
L power:+3.3V #PWR034
U 1 1 5D9C96D3
P 5250 2150
F 0 "#PWR034" H 5250 2000 50  0001 C CNN
F 1 "+3.3V" H 5265 2323 50  0000 C CNN
F 2 "" H 5250 2150 50  0001 C CNN
F 3 "" H 5250 2150 50  0001 C CNN
	1    5250 2150
	1    0    0    -1  
$EndComp
Wire Wire Line
	5250 2150 5150 2150
$Comp
L Jumper:SolderJumper_2_Bridged JP2
U 1 1 5D9CA713
P 5100 1550
F 0 "JP2" H 5100 1755 50  0000 C CNN
F 1 "ADDR" H 5100 1664 50  0000 C CNN
F 2 "Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm" H 5100 1550 50  0001 C CNN
F 3 "~" H 5100 1550 50  0001 C CNN
	1    5100 1550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR033
U 1 1 5D9CD13C
P 5250 1550
F 0 "#PWR033" H 5250 1300 50  0001 C CNN
F 1 "GND" H 5255 1377 50  0000 C CNN
F 2 "" H 5250 1550 50  0001 C CNN
F 3 "" H 5250 1550 50  0001 C CNN
	1    5250 1550
	1    0    0    -1  
$EndComp
Text Notes 5250 1000 2    79   ~ 0
BME280 \nTemp., Pressure, Humidity
$Comp
L Regulator_Linear:AP2112K-3.3 U2
U 1 1 5D9DE7AA
P 4950 7050
F 0 "U2" H 4950 7392 50  0000 C CNN
F 1 "AP2112K-3.3" H 4950 7301 50  0000 C CNN
F 2 "Weather Station PCB:SOT-25" H 4950 7375 50  0001 C CNN
F 3 "https://www.diodes.com/assets/Datasheets/AP2112.pdf" H 4950 7150 50  0001 C CNN
	1    4950 7050
	1    0    0    -1  
$EndComp
$Comp
L Connector:Screw_Terminal_01x02 J4
U 1 1 5D9E9429
P 1000 1800
F 0 "J4" H 918 1475 50  0000 C CNN
F 1 "DC IN" H 918 1566 50  0000 C CNN
F 2 "TerminalBlock_RND:TerminalBlock_RND_205-00012_1x02_P5.00mm_Horizontal" H 1000 1800 50  0001 C CNN
F 3 "~" H 1000 1800 50  0001 C CNN
	1    1000 1800
	-1   0    0    1   
$EndComp
$Comp
L Connector:Barrel_Jack_Switch J2
U 1 1 5D9EA5D9
P 850 1200
F 0 "J2" H 907 1517 50  0000 C CNN
F 1 "Barrel_Jack_Switch" H 907 1426 50  0000 C CNN
F 2 "Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal" H 900 1160 50  0001 C CNN
F 3 "~" H 900 1160 50  0001 C CNN
	1    850  1200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR03
U 1 1 5D9EAF67
P 1200 1800
F 0 "#PWR03" H 1200 1550 50  0001 C CNN
F 1 "GND" H 1205 1627 50  0000 C CNN
F 2 "" H 1200 1800 50  0001 C CNN
F 3 "" H 1200 1800 50  0001 C CNN
	1    1200 1800
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR06
U 1 1 5D9EC1A7
P 1650 1200
F 0 "#PWR06" H 1650 950 50  0001 C CNN
F 1 "GND" H 1655 1027 50  0000 C CNN
F 2 "" H 1650 1200 50  0001 C CNN
F 3 "" H 1650 1200 50  0001 C CNN
	1    1650 1200
	1    0    0    -1  
$EndComp
Wire Wire Line
	1650 1200 1150 1200
$Comp
L Device:R_Small R1
U 1 1 5D9EEEC6
P 1250 2300
F 0 "R1" V 1150 2300 50  0000 C CNN
F 1 "0" V 1350 2300 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 1250 2300 50  0001 C CNN
F 3 "~" H 1250 2300 50  0001 C CNN
	1    1250 2300
	0    1    1    0   
$EndComp
Wire Wire Line
	1750 1100 1750 1700
Wire Wire Line
	1200 1700 1750 1700
$Comp
L Device:CP_Small BFC1
U 1 1 5D9F26FC
P 2150 1300
F 0 "BFC1" H 2238 1346 50  0000 L CNN
F 1 "4700uF" H 2200 1200 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D16.0mm_P7.50mm" H 2150 1300 50  0001 C CNN
F 3 "~" H 2150 1300 50  0001 C CNN
	1    2150 1300
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C1
U 1 1 5D9F2EBF
P 2550 1300
F 0 "C1" H 2642 1346 50  0000 L CNN
F 1 "22uF" H 2600 1200 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 2550 1300 50  0001 C CNN
F 3 "~" H 2550 1300 50  0001 C CNN
	1    2550 1300
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR010
U 1 1 5D9F53B4
P 2150 1400
F 0 "#PWR010" H 2150 1150 50  0001 C CNN
F 1 "GND" H 2155 1227 50  0000 C CNN
F 2 "" H 2150 1400 50  0001 C CNN
F 3 "" H 2150 1400 50  0001 C CNN
	1    2150 1400
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR014
U 1 1 5D9F5761
P 2550 1400
F 0 "#PWR014" H 2550 1150 50  0001 C CNN
F 1 "GND" H 2555 1227 50  0000 C CNN
F 2 "" H 2550 1400 50  0001 C CNN
F 3 "" H 2550 1400 50  0001 C CNN
	1    2550 1400
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR018
U 1 1 5D9F6E4A
P 3050 1100
F 0 "#PWR018" H 3050 950 50  0001 C CNN
F 1 "VCC" H 3067 1273 50  0000 C CNN
F 2 "" H 3050 1100 50  0001 C CNN
F 3 "" H 3050 1100 50  0001 C CNN
	1    3050 1100
	1    0    0    -1  
$EndComp
$Comp
L power:GNDS #PWR01
U 1 1 5D9F754F
P 850 2900
F 0 "#PWR01" H 850 2650 50  0001 C CNN
F 1 "GNDS" H 855 2727 50  0000 C CNN
F 2 "" H 850 2900 50  0001 C CNN
F 3 "" H 850 2900 50  0001 C CNN
	1    850  2900
	1    0    0    -1  
$EndComp
$Comp
L power:GNDS #PWR05
U 1 1 5D9F9663
P 1450 1300
F 0 "#PWR05" H 1450 1050 50  0001 C CNN
F 1 "GNDS" H 1455 1127 50  0000 C CNN
F 2 "" H 1450 1300 50  0001 C CNN
F 3 "" H 1450 1300 50  0001 C CNN
	1    1450 1300
	1    0    0    -1  
$EndComp
Wire Wire Line
	1450 1300 1150 1300
Wire Wire Line
	1150 1100 1750 1100
Wire Wire Line
	2050 1100 2050 2300
Wire Wire Line
	1350 2300 1750 2300
Text Notes 1450 650  0    79   ~ 0
Power Input
Wire Notes Line
	3200 500  3200 3300
Wire Notes Line
	-50  3300 10550 3300
$Comp
L power:VBUS #PWR08
U 1 1 5DA13A85
P 1750 2300
F 0 "#PWR08" H 1750 2150 50  0001 C CNN
F 1 "VBUS" H 1765 2473 50  0000 C CNN
F 2 "" H 1750 2300 50  0001 C CNN
F 3 "" H 1750 2300 50  0001 C CNN
	1    1750 2300
	1    0    0    -1  
$EndComp
Connection ~ 1750 2300
Wire Wire Line
	1750 2300 2050 2300
$Comp
L power:VBUS #PWR048
U 1 1 5DA14047
P 8400 5350
F 0 "#PWR048" H 8400 5200 50  0001 C CNN
F 1 "VBUS" H 8415 5523 50  0000 C CNN
F 2 "" H 8400 5350 50  0001 C CNN
F 3 "" H 8400 5350 50  0001 C CNN
	1    8400 5350
	1    0    0    -1  
$EndComp
Text Label 8900 5500 2    50   ~ 0
D+
Text Label 1150 2500 0    50   ~ 0
D+
Text Label 8900 5600 2    50   ~ 0
D-
Text Label 1150 2600 0    50   ~ 0
D-
$Comp
L power:GNDS #PWR052
U 1 1 5DA15EB6
P 9500 6000
F 0 "#PWR052" H 9500 5750 50  0001 C CNN
F 1 "GNDS" H 9505 5827 50  0000 C CNN
F 2 "" H 9500 6000 50  0001 C CNN
F 3 "" H 9500 6000 50  0001 C CNN
	1    9500 6000
	1    0    0    -1  
$EndComp
Wire Wire Line
	9500 6000 9600 6000
Connection ~ 9500 6000
$Comp
L Interface_USB:CP2102N-A01-GQFN24 U5
U 1 1 5DA11A11
P 9500 5100
F 0 "U5" H 9500 6181 50  0000 C CNN
F 1 "CP2102N-A01-GQFN24" H 9500 6090 50  0000 C CNN
F 2 "Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm" H 9950 4300 50  0001 L CNN
F 3 "https://www.silabs.com/documents/public/data-sheets/cp2102n-datasheet.pdf" H 9550 4050 50  0001 C CNN
	1    9500 5100
	1    0    0    -1  
$EndComp
NoConn ~ 10100 5400
NoConn ~ 10100 5500
NoConn ~ 10100 5600
NoConn ~ 10100 5700
$Comp
L Device:R_Small R12
U 1 1 5DA19089
P 8400 5450
F 0 "R12" H 8550 5400 50  0000 C CNN
F 1 "22.1K" H 8450 5500 50  0000 L TNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 8400 5450 50  0001 C CNN
F 3 "~" H 8400 5450 50  0001 C CNN
	1    8400 5450
	-1   0    0    1   
$EndComp
$Comp
L Device:R_Small R13
U 1 1 5DA1BC70
P 8400 5650
F 0 "R13" H 8550 5600 50  0000 C CNN
F 1 "47.5K" H 8450 5700 50  0000 L TNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 8400 5650 50  0001 C CNN
F 3 "~" H 8400 5650 50  0001 C CNN
	1    8400 5650
	-1   0    0    1   
$EndComp
$Comp
L power:GNDS #PWR049
U 1 1 5DA1E22C
P 8400 5750
F 0 "#PWR049" H 8400 5500 50  0001 C CNN
F 1 "GNDS" H 8405 5577 50  0000 C CNN
F 2 "" H 8400 5750 50  0001 C CNN
F 3 "" H 8400 5750 50  0001 C CNN
	1    8400 5750
	1    0    0    -1  
$EndComp
Wire Wire Line
	8400 5550 8550 5550
Wire Wire Line
	8550 5550 8550 5400
Wire Wire Line
	8550 5400 8900 5400
Connection ~ 8400 5550
$Comp
L Device:C_Small C12
U 1 1 5DA2711E
P 8350 4300
F 0 "C12" H 8442 4346 50  0000 L CNN
F 1 "22uF" H 8442 4255 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 8350 4300 50  0001 C CNN
F 3 "~" H 8350 4300 50  0001 C CNN
	1    8350 4300
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR046
U 1 1 5DA2A92A
P 8350 4000
F 0 "#PWR046" H 8350 3850 50  0001 C CNN
F 1 "+3.3V" H 8365 4173 50  0000 C CNN
F 2 "" H 8350 4000 50  0001 C CNN
F 3 "" H 8350 4000 50  0001 C CNN
	1    8350 4000
	1    0    0    -1  
$EndComp
Wire Wire Line
	9500 4200 9400 4200
Wire Wire Line
	9400 4200 8650 4200
Connection ~ 9400 4200
Wire Wire Line
	8350 4200 8350 4000
Connection ~ 8350 4200
Wire Wire Line
	8900 5100 8650 5100
Wire Wire Line
	8650 5100 8650 4200
Connection ~ 8650 4200
Wire Wire Line
	8650 4200 8350 4200
$Comp
L power:GNDS #PWR047
U 1 1 5DA2FD39
P 8350 4400
F 0 "#PWR047" H 8350 4150 50  0001 C CNN
F 1 "GNDS" H 8355 4227 50  0000 C CNN
F 2 "" H 8350 4400 50  0001 C CNN
F 3 "" H 8350 4400 50  0001 C CNN
	1    8350 4400
	1    0    0    -1  
$EndComp
Text Label 10100 5100 0    50   ~ 0
DTR
Text Label 10100 4900 0    50   ~ 0
USB_RX
Text Label 10100 4800 0    50   ~ 0
TXD
Text Label 10100 4700 0    50   ~ 0
RTS
NoConn ~ 10100 4500
NoConn ~ 10100 4600
NoConn ~ 10100 5000
NoConn ~ 10100 5200
NoConn ~ 8900 4900
NoConn ~ 8900 4800
NoConn ~ 8900 4500
Text Notes 8600 3700 0    79   ~ 0
USB to Serial Converter
Wire Notes Line
	7850 3300 7850 6400
$Comp
L Battery_Management:MCP73871 U3
U 1 1 5DA5BE8B
P 5800 5000
F 0 "U3" H 5800 6081 50  0000 C CNN
F 1 "MCP73871" H 5800 5990 50  0000 C CNN
F 2 "Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm_ThermalVias" H 6000 4100 50  0001 L CIN
F 3 "http://www.mouser.com/ds/2/268/22090a-52174.pdf" H 5650 5550 50  0001 C CNN
	1    5800 5000
	1    0    0    -1  
$EndComp
Text Label 7250 4050 0    50   ~ 0
LOAD
$Comp
L Device:R_Small R7
U 1 1 5DA60B2B
P 4900 5000
F 0 "R7" V 5000 4950 50  0000 R BNN
F 1 "2K" V 5000 5000 50  0000 L BNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4900 5000 50  0001 C CNN
F 3 "~" H 4900 5000 50  0001 C CNN
	1    4900 5000
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small PROG1
U 1 1 5DA5D4A6
P 4900 4800
F 0 "PROG1" V 4850 4750 50  0000 R BNN
F 1 "2K" V 4850 4800 50  0000 L BNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4900 4800 50  0001 C CNN
F 3 "~" H 4900 4800 50  0001 C CNN
	1    4900 4800
	0    1    1    0   
$EndComp
Wire Wire Line
	5000 5000 5100 5000
Wire Wire Line
	5100 4800 5000 4800
$Comp
L power:VCC #PWR027
U 1 1 5DA6918B
P 4650 4100
F 0 "#PWR027" H 4650 3950 50  0001 C CNN
F 1 "VCC" V 4668 4227 50  0000 L CNN
F 2 "" H 4650 4100 50  0001 C CNN
F 3 "" H 4650 4100 50  0001 C CNN
	1    4650 4100
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR028
U 1 1 5DA694EA
P 4650 5000
F 0 "#PWR028" H 4650 4750 50  0001 C CNN
F 1 "GND" H 4655 4827 50  0000 C CNN
F 2 "" H 4650 5000 50  0001 C CNN
F 3 "" H 4650 5000 50  0001 C CNN
	1    4650 5000
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 4800 4650 4800
Wire Wire Line
	4650 4800 4650 5000
Wire Wire Line
	4800 5000 4650 5000
Connection ~ 4650 5000
$Comp
L power:VCC #PWR031
U 1 1 5DA6B19B
P 5100 4900
F 0 "#PWR031" H 5100 4750 50  0001 C CNN
F 1 "VCC" V 5100 5150 50  0000 R CNN
F 2 "" H 5100 4900 50  0001 C CNN
F 3 "" H 5100 4900 50  0001 C CNN
	1    5100 4900
	0    -1   -1   0   
$EndComp
$Comp
L power:GND #PWR038
U 1 1 5D97D4A8
P 5800 5900
F 0 "#PWR038" H 5800 5650 50  0001 C CNN
F 1 "GND" H 5805 5727 50  0000 C CNN
F 2 "" H 5800 5900 50  0001 C CNN
F 3 "" H 5800 5900 50  0001 C CNN
	1    5800 5900
	1    0    0    -1  
$EndComp
Wire Wire Line
	6500 4900 6500 4700
$Comp
L Device:C_Small C10
U 1 1 5D97EAC1
P 6800 4650
F 0 "C10" H 6892 4696 50  0000 L CNN
F 1 "4.7uF" H 6892 4605 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 6800 4650 50  0001 C CNN
F 3 "~" H 6800 4650 50  0001 C CNN
	1    6800 4650
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C8
U 1 1 5D97EB2B
P 6650 4150
F 0 "C8" H 6742 4196 50  0000 L CNN
F 1 "22uF" H 6742 4105 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 6650 4150 50  0001 C CNN
F 3 "~" H 6650 4150 50  0001 C CNN
	1    6650 4150
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR043
U 1 1 5D97EC55
P 6800 4750
F 0 "#PWR043" H 6800 4500 50  0001 C CNN
F 1 "GND" H 6805 4577 50  0000 C CNN
F 2 "" H 6800 4750 50  0001 C CNN
F 3 "" H 6800 4750 50  0001 C CNN
	1    6800 4750
	1    0    0    -1  
$EndComp
Wire Wire Line
	6800 4550 6500 4550
Wire Wire Line
	6500 4550 6500 4700
Connection ~ 6500 4700
Wire Wire Line
	6800 4550 7000 4550
Connection ~ 6800 4550
Text Label 7000 4550 0    50   ~ 0
V_BATT
$Comp
L power:GND #PWR041
U 1 1 5D980D10
P 6650 4250
F 0 "#PWR041" H 6650 4000 50  0001 C CNN
F 1 "GND" H 6655 4077 50  0000 C CNN
F 2 "" H 6650 4250 50  0001 C CNN
F 3 "" H 6650 4250 50  0001 C CNN
	1    6650 4250
	1    0    0    -1  
$EndComp
Wire Wire Line
	6500 4400 6500 4050
Wire Wire Line
	6500 4050 6650 4050
$Comp
L power:VCC #PWR032
U 1 1 5D98302E
P 5100 5400
F 0 "#PWR032" H 5100 5250 50  0001 C CNN
F 1 "VCC" V 5100 5650 50  0000 R CNN
F 2 "" H 5100 5400 50  0001 C CNN
F 3 "" H 5100 5400 50  0001 C CNN
	1    5100 5400
	0    -1   -1   0   
$EndComp
Wire Wire Line
	5100 5600 5100 5400
Connection ~ 5100 5400
Wire Wire Line
	5100 4600 5100 4400
Connection ~ 5100 4400
Wire Wire Line
	5100 4400 5100 4100
Wire Wire Line
	5100 4100 5800 4100
$Comp
L power:VCC #PWR045
U 1 1 5D9859D1
P 7450 4900
F 0 "#PWR045" H 7450 4750 50  0001 C CNN
F 1 "VCC" V 7468 5027 50  0000 L CNN
F 2 "" H 7450 4900 50  0001 C CNN
F 3 "" H 7450 4900 50  0001 C CNN
	1    7450 4900
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R11
U 1 1 5D986BAF
P 7200 5750
F 0 "R11" V 7150 5700 50  0000 R BNN
F 1 "1K" V 7150 5800 50  0000 L BNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 7200 5750 50  0001 C CNN
F 3 "~" H 7200 5750 50  0001 C CNN
	1    7200 5750
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R10
U 1 1 5D986F5C
P 7200 5450
F 0 "R10" V 7150 5400 50  0000 R BNN
F 1 "1K" V 7150 5500 50  0000 L BNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 7200 5450 50  0001 C CNN
F 3 "~" H 7200 5450 50  0001 C CNN
	1    7200 5450
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R9
U 1 1 5D986FB2
P 7200 5150
F 0 "R9" V 7150 5100 50  0000 R BNN
F 1 "1K" V 7150 5200 50  0000 L BNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 7200 5150 50  0001 C CNN
F 3 "~" H 7200 5150 50  0001 C CNN
	1    7200 5150
	0    1    1    0   
$EndComp
$Comp
L Device:LED_Small PWR1
U 1 1 5D9870E4
P 6750 5150
F 0 "PWR1" H 6750 5250 50  0000 C CNN
F 1 "RED" H 6750 5050 50  0000 C CNN
F 2 "LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder" V 6750 5150 50  0001 C CNN
F 3 "~" V 6750 5150 50  0001 C CNN
	1    6750 5150
	1    0    0    -1  
$EndComp
$Comp
L Device:LED_Small CHARGED1
U 1 1 5D987680
P 6750 5450
F 0 "CHARGED1" H 6750 5550 50  0000 C CNN
F 1 "GREEN" H 6750 5350 50  0000 C CNN
F 2 "LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder" V 6750 5450 50  0001 C CNN
F 3 "~" V 6750 5450 50  0001 C CNN
	1    6750 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:LED_Small LOW1
U 1 1 5D9876E0
P 6750 5750
F 0 "LOW1" H 6750 5850 50  0000 C CNN
F 1 "ORANGE" H 6750 5650 50  0000 C CNN
F 2 "LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder" V 6750 5750 50  0001 C CNN
F 3 "~" V 6750 5750 50  0001 C CNN
	1    6750 5750
	1    0    0    -1  
$EndComp
Wire Wire Line
	7450 4900 7450 5150
Wire Wire Line
	7450 5150 7300 5150
Wire Wire Line
	6650 5150 6600 5150
Wire Wire Line
	6600 5150 6600 5200
Wire Wire Line
	6600 5200 6500 5200
Wire Wire Line
	7450 5150 7450 5450
Wire Wire Line
	7450 5450 7300 5450
Connection ~ 7450 5150
Wire Wire Line
	6650 5450 6600 5450
Wire Wire Line
	6600 5450 6600 5400
Wire Wire Line
	6600 5400 6500 5400
Wire Wire Line
	7450 5450 7450 5750
Wire Wire Line
	7450 5750 7300 5750
Connection ~ 7450 5450
Wire Wire Line
	6650 5750 6550 5750
Wire Wire Line
	6550 5750 6550 5500
Wire Wire Line
	6550 5500 6500 5500
Wire Wire Line
	6850 5150 7100 5150
Wire Wire Line
	6850 5450 7100 5450
Wire Wire Line
	6850 5750 7100 5750
$Comp
L Connector:Screw_Terminal_01x02 J9
U 1 1 5D999C5A
P 4000 5000
F 0 "J9" H 3918 4675 50  0000 C CNN
F 1 "10K NTC" H 3918 4766 50  0000 C CNN
F 2 "TerminalBlock_RND:TerminalBlock_RND_205-00012_1x02_P5.00mm_Horizontal" H 4000 5000 50  0001 C CNN
F 3 "~" H 4000 5000 50  0001 C CNN
	1    4000 5000
	-1   0    0    1   
$EndComp
$Comp
L Jumper:Jumper_3_Bridged12 JP1
U 1 1 5D99A2B8
P 4400 5350
F 0 "JP1" V 4354 5417 50  0000 L CNN
F 1 "THERM_SEL" V 4445 5417 50  0000 L CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical" H 4400 5350 50  0001 C CNN
F 3 "~" H 4400 5350 50  0001 C CNN
	1    4400 5350
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4550 5350 4800 5350
Wire Wire Line
	4800 5350 4800 5200
Wire Wire Line
	4800 5200 5100 5200
$Comp
L power:GND #PWR024
U 1 1 5D9A3880
P 4200 5000
F 0 "#PWR024" H 4200 4750 50  0001 C CNN
F 1 "GND" H 4205 4827 50  0000 C CNN
F 2 "" H 4200 5000 50  0001 C CNN
F 3 "" H 4200 5000 50  0001 C CNN
	1    4200 5000
	1    0    0    -1  
$EndComp
Wire Wire Line
	4200 4900 4400 4900
Wire Wire Line
	4400 4900 4400 5100
$Comp
L Device:R_Small R6
U 1 1 5D9A55CA
P 4400 5700
F 0 "R6" H 4459 5746 50  0000 L CNN
F 1 "10K" H 4459 5655 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4400 5700 50  0001 C CNN
F 3 "~" H 4400 5700 50  0001 C CNN
	1    4400 5700
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR026
U 1 1 5D9A5662
P 4400 5800
F 0 "#PWR026" H 4400 5550 50  0001 C CNN
F 1 "GND" H 4405 5627 50  0000 C CNN
F 2 "" H 4400 5800 50  0001 C CNN
F 3 "" H 4400 5800 50  0001 C CNN
	1    4400 5800
	1    0    0    -1  
$EndComp
Text Notes 4900 3600 0    79   ~ 0
Battery Charging
Wire Wire Line
	5400 6950 5250 6950
$Comp
L power:GND #PWR030
U 1 1 5D9BB7FA
P 4950 7350
F 0 "#PWR030" H 4950 7100 50  0001 C CNN
F 1 "GND" H 4955 7177 50  0000 C CNN
F 2 "" H 4950 7350 50  0001 C CNN
F 3 "" H 4950 7350 50  0001 C CNN
	1    4950 7350
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R5
U 1 1 5D9BC9C9
P 4250 7000
F 0 "R5" H 4191 6954 50  0000 R CNN
F 1 "10K" H 4191 7045 50  0000 R CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4250 7000 50  0001 C CNN
F 3 "~" H 4250 7000 50  0001 C CNN
	1    4250 7000
	1    0    0    1   
$EndComp
Wire Wire Line
	4250 6750 4250 6900
Wire Wire Line
	4400 6950 4400 6900
Wire Wire Line
	4400 6900 4250 6900
Wire Wire Line
	4400 6950 4650 6950
Connection ~ 4250 6900
Wire Wire Line
	4250 7100 4400 7100
Wire Wire Line
	4400 7100 4400 7050
Wire Wire Line
	4400 7050 4650 7050
Text Label 4250 6750 0    50   ~ 0
LOAD
$Comp
L Device:C_Small C5
U 1 1 5D9C750D
P 5400 7050
F 0 "C5" H 5492 7096 50  0000 L CNN
F 1 "22uF" H 5450 6950 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 5400 7050 50  0001 C CNN
F 3 "~" H 5400 7050 50  0001 C CNN
	1    5400 7050
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C6
U 1 1 5D9C75B1
P 5700 7050
F 0 "C6" H 5792 7096 50  0000 L CNN
F 1 "22uF" H 5750 6950 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 5700 7050 50  0001 C CNN
F 3 "~" H 5700 7050 50  0001 C CNN
	1    5700 7050
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR035
U 1 1 5D9C76A5
P 5400 7150
F 0 "#PWR035" H 5400 6900 50  0001 C CNN
F 1 "GND" H 5405 6977 50  0000 C CNN
F 2 "" H 5400 7150 50  0001 C CNN
F 3 "" H 5400 7150 50  0001 C CNN
	1    5400 7150
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR037
U 1 1 5D9C7706
P 5700 7150
F 0 "#PWR037" H 5700 6900 50  0001 C CNN
F 1 "GND" H 5705 6977 50  0000 C CNN
F 2 "" H 5700 7150 50  0001 C CNN
F 3 "" H 5700 7150 50  0001 C CNN
	1    5700 7150
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR036
U 1 1 5D9C7767
P 5700 6900
F 0 "#PWR036" H 5700 6750 50  0001 C CNN
F 1 "+3.3V" H 5715 7073 50  0000 C CNN
F 2 "" H 5700 6900 50  0001 C CNN
F 3 "" H 5700 6900 50  0001 C CNN
	1    5700 6900
	1    0    0    -1  
$EndComp
Wire Wire Line
	5400 6950 5700 6950
Connection ~ 5400 6950
Wire Wire Line
	5700 6900 5700 6950
Connection ~ 5700 6950
Text Notes 4350 6450 0    79   ~ 0
Logic Voltage Regulation
Wire Notes Line
	3750 7700 3750 6250
Wire Notes Line
	6350 6250 6350 6200
$Comp
L Connector_Generic:Conn_01x05 J7
U 1 1 5D9AE655
P 2400 4350
F 0 "J7" H 2320 3925 50  0000 C CNN
F 1 "I2C Expansion" H 2320 4016 50  0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical" H 2400 4350 50  0001 C CNN
F 3 "~" H 2400 4350 50  0001 C CNN
	1    2400 4350
	-1   0    0    1   
$EndComp
Text Label 2600 4150 0    50   ~ 0
SCL
Text Label 2600 4250 0    50   ~ 0
SDA
Text Label 2600 4350 0    50   ~ 0
LOAD
$Comp
L power:GND #PWR015
U 1 1 5D9B002A
P 2600 4550
F 0 "#PWR015" H 2600 4300 50  0001 C CNN
F 1 "GND" H 2605 4377 50  0000 C CNN
F 2 "" H 2600 4550 50  0001 C CNN
F 3 "" H 2600 4550 50  0001 C CNN
	1    2600 4550
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR017
U 1 1 5D9B00E5
P 2900 4450
F 0 "#PWR017" H 2900 4300 50  0001 C CNN
F 1 "+3.3V" H 2915 4623 50  0000 C CNN
F 2 "" H 2900 4450 50  0001 C CNN
F 3 "" H 2900 4450 50  0001 C CNN
	1    2900 4450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2900 4450 2600 4450
$Comp
L Connector_Generic:Conn_01x05 J5
U 1 1 5D9C4DC5
P 1600 4350
F 0 "J5" H 1520 3925 50  0000 C CNN
F 1 "I2C Expansion" H 1520 4016 50  0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical" H 1600 4350 50  0001 C CNN
F 3 "~" H 1600 4350 50  0001 C CNN
	1    1600 4350
	-1   0    0    1   
$EndComp
Text Label 1800 4150 0    50   ~ 0
SCL
Text Label 1800 4250 0    50   ~ 0
SDA
Text Label 1800 4350 0    50   ~ 0
LOAD
$Comp
L power:GND #PWR09
U 1 1 5D9C4DCF
P 1800 4550
F 0 "#PWR09" H 1800 4300 50  0001 C CNN
F 1 "GND" H 1805 4377 50  0000 C CNN
F 2 "" H 1800 4550 50  0001 C CNN
F 3 "" H 1800 4550 50  0001 C CNN
	1    1800 4550
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR011
U 1 1 5D9C4DD5
P 2100 4450
F 0 "#PWR011" H 2100 4300 50  0001 C CNN
F 1 "+3.3V" H 2115 4623 50  0000 C CNN
F 2 "" H 2100 4450 50  0001 C CNN
F 3 "" H 2100 4450 50  0001 C CNN
	1    2100 4450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2100 4450 1800 4450
Text Notes 1300 3650 0    79   ~ 0
Expansion
Wire Notes Line
	3100 3300 3100 6250
Wire Notes Line
	0    6250 6350 6250
$Comp
L Device:C_Small C2
U 1 1 5D9E9EE8
P 2850 1300
F 0 "C2" H 2942 1346 50  0000 L CNN
F 1 "22uF" H 2900 1200 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 2850 1300 50  0001 C CNN
F 3 "~" H 2850 1300 50  0001 C CNN
	1    2850 1300
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR016
U 1 1 5D9E9F5E
P 2850 1400
F 0 "#PWR016" H 2850 1150 50  0001 C CNN
F 1 "GND" H 2855 1227 50  0000 C CNN
F 2 "" H 2850 1400 50  0001 C CNN
F 3 "" H 2850 1400 50  0001 C CNN
	1    2850 1400
	1    0    0    -1  
$EndComp
Wire Wire Line
	2050 1100 2150 1100
Wire Wire Line
	2850 1100 2850 1200
Connection ~ 2850 1100
Wire Wire Line
	2850 1100 3050 1100
Wire Wire Line
	2550 1100 2550 1200
Connection ~ 2550 1100
Wire Wire Line
	2550 1100 2850 1100
Wire Wire Line
	2150 1200 2150 1100
Connection ~ 2150 1100
Wire Wire Line
	2150 1100 2550 1100
$Comp
L Device:D_Schottky D1
U 1 1 5D9F4B95
P 1900 1100
F 0 "D1" H 1900 884 50  0000 C CNN
F 1 "D_Schottky" H 1900 975 50  0000 C CNN
F 2 "Diode_SMD:D_1206_3216Metric_Pad1.42x1.75mm_HandSolder" H 1900 1100 50  0001 C CNN
F 3 "~" H 1900 1100 50  0001 C CNN
	1    1900 1100
	-1   0    0    1   
$EndComp
Connection ~ 2050 1100
Connection ~ 1750 1100
$Comp
L Device:C_Small C3
U 1 1 5D9F58D1
P 3600 1350
F 0 "C3" H 3692 1396 50  0000 L CNN
F 1 "22uF" H 3650 1250 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 3600 1350 50  0001 C CNN
F 3 "~" H 3600 1350 50  0001 C CNN
	1    3600 1350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR021
U 1 1 5D9F5963
P 3600 1450
F 0 "#PWR021" H 3600 1200 50  0001 C CNN
F 1 "GND" H 3605 1277 50  0000 C CNN
F 2 "" H 3600 1450 50  0001 C CNN
F 3 "" H 3600 1450 50  0001 C CNN
	1    3600 1450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3600 1250 4250 1250
Connection ~ 3600 1250
$Comp
L Device:C_Small C7
U 1 1 5D9F96FD
P 6500 2300
F 0 "C7" H 6592 2346 50  0000 L CNN
F 1 "22uF" H 6550 2200 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 6500 2300 50  0001 C CNN
F 3 "~" H 6500 2300 50  0001 C CNN
	1    6500 2300
	1    0    0    -1  
$EndComp
Connection ~ 6500 2200
Wire Wire Line
	6500 2200 6750 2200
$Comp
L Device:C_Small C9
U 1 1 5D9F979F
P 6750 2300
F 0 "C9" H 6842 2346 50  0000 L CNN
F 1 "22uF" H 6800 2200 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 6750 2300 50  0001 C CNN
F 3 "~" H 6750 2300 50  0001 C CNN
	1    6750 2300
	1    0    0    -1  
$EndComp
Connection ~ 6750 2200
Wire Wire Line
	6750 2200 6850 2200
$Comp
L power:GND #PWR040
U 1 1 5D9F985D
P 6500 2400
F 0 "#PWR040" H 6500 2150 50  0001 C CNN
F 1 "GND" H 6505 2227 50  0000 C CNN
F 2 "" H 6500 2400 50  0001 C CNN
F 3 "" H 6500 2400 50  0001 C CNN
	1    6500 2400
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR042
U 1 1 5D9F98CC
P 6750 2400
F 0 "#PWR042" H 6750 2150 50  0001 C CNN
F 1 "GND" H 6755 2227 50  0000 C CNN
F 2 "" H 6750 2400 50  0001 C CNN
F 3 "" H 6750 2400 50  0001 C CNN
	1    6750 2400
	1    0    0    -1  
$EndComp
Text Label 6550 2900 2    50   ~ 0
RESET
Text Label 7000 2900 0    50   ~ 0
GPIO16
Wire Wire Line
	7000 2900 6550 2900
Connection ~ 6650 4050
Wire Wire Line
	6650 4050 7000 4050
$Comp
L Device:C_Small C11
U 1 1 5D9FF536
P 7000 4150
F 0 "C11" H 7092 4196 50  0000 L CNN
F 1 "22uF" H 7092 4105 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 7000 4150 50  0001 C CNN
F 3 "~" H 7000 4150 50  0001 C CNN
	1    7000 4150
	1    0    0    -1  
$EndComp
Connection ~ 7000 4050
Wire Wire Line
	7000 4050 7250 4050
$Comp
L power:GND #PWR044
U 1 1 5D9FF5C0
P 7000 4250
F 0 "#PWR044" H 7000 4000 50  0001 C CNN
F 1 "GND" H 7005 4077 50  0000 C CNN
F 2 "" H 7000 4250 50  0001 C CNN
F 3 "" H 7000 4250 50  0001 C CNN
	1    7000 4250
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C4
U 1 1 5DA00DBD
P 4800 4200
F 0 "C4" H 4892 4246 50  0000 L CNN
F 1 "22uF" H 4892 4155 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4800 4200 50  0001 C CNN
F 3 "~" H 4800 4200 50  0001 C CNN
	1    4800 4200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR029
U 1 1 5DA00E6B
P 4800 4300
F 0 "#PWR029" H 4800 4050 50  0001 C CNN
F 1 "GND" H 4805 4127 50  0000 C CNN
F 2 "" H 4800 4300 50  0001 C CNN
F 3 "" H 4800 4300 50  0001 C CNN
	1    4800 4300
	1    0    0    -1  
$EndComp
Wire Wire Line
	4650 4100 4800 4100
Wire Wire Line
	4800 4100 5100 4100
Connection ~ 4800 4100
Connection ~ 5100 4100
$Comp
L Connector_Generic:Conn_02x07_Odd_Even J6
U 1 1 5DA09C95
P 1200 5500
F 0 "J6" H 1250 6017 50  0000 C CNN
F 1 "I/O Breakout" H 1250 5926 50  0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_2x07_P2.54mm_Vertical" H 1200 5500 50  0001 C CNN
F 3 "~" H 1200 5500 50  0001 C CNN
	1    1200 5500
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR07
U 1 1 5DA09DC2
P 800 5200
F 0 "#PWR07" H 800 5050 50  0001 C CNN
F 1 "+3.3V" H 815 5373 50  0000 C CNN
F 2 "" H 800 5200 50  0001 C CNN
F 3 "" H 800 5200 50  0001 C CNN
	1    800  5200
	1    0    0    -1  
$EndComp
Text Label 1000 5300 2    50   ~ 0
GPIO0
Text Label 1000 5400 2    50   ~ 0
GPIO2
Text Label 1000 5500 2    50   ~ 0
GPIO12
Text Label 1000 5600 2    50   ~ 0
GPIO13
Text Label 1000 5700 2    50   ~ 0
GPIO14
Text Label 1000 5800 2    50   ~ 0
GPIO15
Wire Wire Line
	1500 5200 1500 5300
Wire Wire Line
	1500 5300 1500 5400
Connection ~ 1500 5300
Wire Wire Line
	1500 5400 1500 5500
Connection ~ 1500 5400
Wire Wire Line
	1500 5500 1500 5600
Connection ~ 1500 5500
Wire Wire Line
	1500 5600 1500 5700
Connection ~ 1500 5600
Wire Wire Line
	1500 5700 1500 5800
Connection ~ 1500 5700
Wire Wire Line
	1500 5800 1500 5900
Connection ~ 1500 5800
$Comp
L power:GND #PWR013
U 1 1 5DA23037
P 1500 5900
F 0 "#PWR013" H 1500 5650 50  0001 C CNN
F 1 "GND" H 1505 5727 50  0000 C CNN
F 2 "" H 1500 5900 50  0001 C CNN
F 3 "" H 1500 5900 50  0001 C CNN
	1    1500 5900
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x05 J1
U 1 1 5DA34DDA
P 700 4350
F 0 "J1" H 620 3925 50  0000 C CNN
F 1 "I2C Expansion" H 620 4016 50  0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical" H 700 4350 50  0001 C CNN
F 3 "~" H 700 4350 50  0001 C CNN
	1    700  4350
	-1   0    0    1   
$EndComp
Text Label 900  4150 0    50   ~ 0
SCL
Text Label 900  4250 0    50   ~ 0
SDA
Text Label 900  4350 0    50   ~ 0
LOAD
$Comp
L power:GND #PWR02
U 1 1 5DA34DE4
P 900 4550
F 0 "#PWR02" H 900 4300 50  0001 C CNN
F 1 "GND" H 905 4377 50  0000 C CNN
F 2 "" H 900 4550 50  0001 C CNN
F 3 "" H 900 4550 50  0001 C CNN
	1    900  4550
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR04
U 1 1 5DA34DEA
P 1200 4450
F 0 "#PWR04" H 1200 4300 50  0001 C CNN
F 1 "+3.3V" H 1215 4623 50  0000 C CNN
F 2 "" H 1200 4450 50  0001 C CNN
F 3 "" H 1200 4450 50  0001 C CNN
	1    1200 4450
	1    0    0    -1  
$EndComp
Wire Wire Line
	1200 4450 900  4450
Wire Wire Line
	1000 5200 800  5200
$Comp
L Connector_Generic:Conn_01x02 J8
U 1 1 5DA3E783
P 3600 3800
F 0 "J8" H 3520 3475 50  0000 C CNN
F 1 "JST Connector" H 3520 3566 50  0000 C CNN
F 2 "Connector_JST:JST_EH_S02B-EH_1x02_P2.50mm_Horizontal" H 3600 3800 50  0001 C CNN
F 3 "~" H 3600 3800 50  0001 C CNN
	1    3600 3800
	-1   0    0    1   
$EndComp
Text Label 3800 3700 0    50   ~ 0
V_BATT
$Comp
L power:GND #PWR023
U 1 1 5DA3E9B3
P 3800 3800
F 0 "#PWR023" H 3800 3550 50  0001 C CNN
F 1 "GND" H 3805 3627 50  0000 C CNN
F 2 "" H 3800 3800 50  0001 C CNN
F 3 "" H 3800 3800 50  0001 C CNN
	1    3800 3800
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R3
U 1 1 5DA42B1D
P 3600 4300
F 0 "R3" H 3750 4250 50  0000 C CNN
F 1 "7.87K0.1%" H 3650 4350 50  0000 L TNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 3600 4300 50  0001 C CNN
F 3 "~" H 3600 4300 50  0001 C CNN
	1    3600 4300
	-1   0    0    1   
$EndComp
$Comp
L Device:R_Small R4
U 1 1 5DA42B24
P 3600 4500
F 0 "R4" H 3750 4450 50  0000 C CNN
F 1 "2.15K0.1%" H 3650 4550 50  0000 L TNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 3600 4500 50  0001 C CNN
F 3 "~" H 3600 4500 50  0001 C CNN
	1    3600 4500
	-1   0    0    1   
$EndComp
Wire Wire Line
	3600 4400 3750 4400
Connection ~ 3600 4400
Text Label 3600 4200 0    50   ~ 0
V_BATT
$Comp
L power:GND #PWR022
U 1 1 5DA46A31
P 3600 4600
F 0 "#PWR022" H 3600 4350 50  0001 C CNN
F 1 "GND" H 3605 4427 50  0000 C CNN
F 2 "" H 3600 4600 50  0001 C CNN
F 3 "" H 3600 4600 50  0001 C CNN
	1    3600 4600
	1    0    0    -1  
$EndComp
Text Label 3750 4400 0    50   ~ 0
ADC
Wire Wire Line
	750  2900 850  2900
Connection ~ 850  2900
NoConn ~ 1150 2700
$Comp
L Device:R_Small R20
U 1 1 5DA7058C
P 2350 5350
F 0 "R20" H 2409 5396 50  0000 L CNN
F 1 "1K" H 2409 5305 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 2350 5350 50  0001 C CNN
F 3 "~" H 2350 5350 50  0001 C CNN
	1    2350 5350
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R21
U 1 1 5DA7784D
P 2600 5350
F 0 "R21" H 2659 5396 50  0000 L CNN
F 1 "1K" H 2659 5305 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 2600 5350 50  0001 C CNN
F 3 "~" H 2600 5350 50  0001 C CNN
	1    2600 5350
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR055
U 1 1 5DA77CAF
P 2350 5250
F 0 "#PWR055" H 2350 5100 50  0001 C CNN
F 1 "+3.3V" H 2365 5423 50  0000 C CNN
F 2 "" H 2350 5250 50  0001 C CNN
F 3 "" H 2350 5250 50  0001 C CNN
	1    2350 5250
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR056
U 1 1 5DA781E6
P 2600 5250
F 0 "#PWR056" H 2600 5100 50  0001 C CNN
F 1 "+3.3V" H 2615 5423 50  0000 C CNN
F 2 "" H 2600 5250 50  0001 C CNN
F 3 "" H 2600 5250 50  0001 C CNN
	1    2600 5250
	1    0    0    -1  
$EndComp
Text Label 2200 5450 2    50   ~ 0
SCL
Text Label 2200 5550 2    50   ~ 0
SDA
Wire Wire Line
	2200 5550 2600 5550
Wire Wire Line
	2600 5550 2600 5450
Wire Wire Line
	2350 5450 2200 5450
$EndSCHEMATC