Belle.sch

EESchema Schematic File Version 2
LIBS:switches
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:Belle
LIBS:ESP8266
LIBS:Belle-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L ESP-12 U2
U 1 1 58BBC183
P 5900 3800
F 0 "U2" H 5900 3700 50  0000 C CNN
F 1 "ESP-12" H 5900 3900 50  0000 C CNN
F 2 "ESP-12F-SMD:ESP-12F-SMD" H 5900 3800 50  0001 C CNN
F 3 "" H 5900 3800 50  0001 C CNN
	1    5900 3800
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR01
U 1 1 58BBCCFC
P 5900 4700
F 0 "#PWR01" H 5900 4450 50  0001 C CNN
F 1 "GND" H 5900 4550 50  0000 C CNN
F 2 "" H 5900 4700 50  0000 C CNN
F 3 "" H 5900 4700 50  0000 C CNN
	1    5900 4700
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR02
U 1 1 58BBCD12
P 5900 2500
F 0 "#PWR02" H 5900 2350 50  0001 C CNN
F 1 "+3.3V" H 5900 2640 50  0000 C CNN
F 2 "" H 5900 2500 50  0000 C CNN
F 3 "" H 5900 2500 50  0000 C CNN
	1    5900 2500
	1    0    0    -1  
$EndComp
$Comp
L C_Small C2
U 1 1 58BBCD3B
P 6300 2900
F 0 "C2" V 6250 2950 50  0000 L CNN
F 1 "DNP" V 6250 2650 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206_HandSoldering" H 6300 2900 50  0001 C CNN
F 3 "" H 6300 2900 50  0000 C CNN
	1    6300 2900
	0    1    1    0   
$EndComp
$Comp
L GND #PWR03
U 1 1 58BBCDC5
P 6650 2900
F 0 "#PWR03" H 6650 2650 50  0001 C CNN
F 1 "GND" H 6650 2750 50  0000 C CNN
F 2 "" H 6650 2900 50  0000 C CNN
F 3 "" H 6650 2900 50  0000 C CNN
	1    6650 2900
	1    0    0    -1  
$EndComp
$Comp
L SPEAKER SP1
U 1 1 58BBCE20
P 4400 3100
F 0 "SP1" H 4450 3300 50  0000 C CNN
F 1 "BUZZER" H 4400 2900 50  0000 C CNN
F 2 "Belle:prosignal_buzzer" H 4400 3100 50  0001 C CNN
F 3 "" H 4400 3100 50  0000 C CNN
	1    4400 3100
	-1   0    0    1   
$EndComp
$Comp
L 74AHC1G14 U1
U 1 1 58BBCFA1
P 3650 3500
F 0 "U1" H 3795 3615 50  0000 C CNN
F 1 "74AHC1G14" H 3850 3350 50  0000 C CNN
F 2 "TO_SOT_Packages_SMD:SOT-23-5_HandSoldering" H 3745 3365 50  0001 C CNN
F 3 "" H 3795 3615 50  0000 C CNN
	1    3650 3500
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR04
U 1 1 58BBD0DA
P 3600 3800
F 0 "#PWR04" H 3600 3550 50  0001 C CNN
F 1 "GND" H 3600 3650 50  0000 C CNN
F 2 "" H 3600 3800 50  0000 C CNN
F 3 "" H 3600 3800 50  0000 C CNN
	1    3600 3800
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR05
U 1 1 58BBD0F6
P 3600 3150
F 0 "#PWR05" H 3600 3000 50  0001 C CNN
F 1 "+3.3V" H 3600 3290 50  0000 C CNN
F 2 "" H 3600 3150 50  0000 C CNN
F 3 "" H 3600 3150 50  0000 C CNN
	1    3600 3150
	1    0    0    -1  
$EndComp
$Comp
L C_Small C1
U 1 1 58BBD184
P 3100 3700
F 0 "C1" H 3110 3770 50  0000 L CNN
F 1 "1u" H 3110 3620 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206_HandSoldering" H 3100 3700 50  0001 C CNN
F 3 "" H 3100 3700 50  0000 C CNN
	1    3100 3700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR06
U 1 1 58BBD1A3
P 3100 4000
F 0 "#PWR06" H 3100 3750 50  0001 C CNN
F 1 "GND" H 3100 3850 50  0000 C CNN
F 2 "" H 3100 4000 50  0000 C CNN
F 3 "" H 3100 4000 50  0000 C CNN
	1    3100 4000
	1    0    0    -1  
$EndComp
$Comp
L R_Small R2
U 1 1 58BBD1C1
P 2800 3500
F 0 "R2" V 2900 3450 50  0000 L CNN
F 1 "47k" V 2700 3450 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 2800 3500 50  0001 C CNN
F 3 "" H 2800 3500 50  0000 C CNN
	1    2800 3500
	0    1    1    0   
$EndComp
$Comp
L R_Small R1
U 1 1 58BBD236
P 2400 3300
F 0 "R1" H 2250 3300 50  0000 L CNN
F 1 "22k" H 2450 3300 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 2400 3300 50  0001 C CNN
F 3 "" H 2400 3300 50  0000 C CNN
	1    2400 3300
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR07
U 1 1 58BBD349
P 2550 3900
F 0 "#PWR07" H 2550 3750 50  0001 C CNN
F 1 "+3.3V" H 2550 4040 50  0000 C CNN
F 2 "" H 2550 3900 50  0000 C CNN
F 3 "" H 2550 3900 50  0000 C CNN
	1    2550 3900
	1    0    0    -1  
$EndComp
$Comp
L CONN_01X02 P1
U 1 1 58BBD41F
P 2150 3550
F 0 "P1" H 2150 3700 50  0000 C CNN
F 1 "Bell CONN" V 2250 3550 50  0000 C CNN
F 2 "Terminal_Blocks:TerminalBlock_Pheonix_MKDS1.5-2pol" H 2150 3550 50  0001 C CNN
F 3 "" H 2150 3550 50  0000 C CNN
	1    2150 3550
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR08
U 1 1 58BBD44E
P 2600 3050
F 0 "#PWR08" H 2600 2800 50  0001 C CNN
F 1 "GND" H 2600 2900 50  0000 C CNN
F 2 "" H 2600 3050 50  0000 C CNN
F 3 "" H 2600 3050 50  0000 C CNN
	1    2600 3050
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR09
U 1 1 58BBD4B2
P 4350 3700
F 0 "#PWR09" H 4350 3550 50  0001 C CNN
F 1 "+3.3V" H 4350 3840 50  0000 C CNN
F 2 "" H 4350 3700 50  0000 C CNN
F 3 "" H 4350 3700 50  0000 C CNN
	1    4350 3700
	1    0    0    -1  
$EndComp
$Comp
L R_Small R3
U 1 1 58BBD531
P 4700 3700
F 0 "R3" V 4800 3650 50  0000 L CNN
F 1 "10K" V 4600 3650 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 4700 3700 50  0001 C CNN
F 3 "" H 4700 3700 50  0000 C CNN
	1    4700 3700
	0    1    1    0   
$EndComp
$Comp
L +3.3V #PWR010
U 1 1 58BBD5B6
P 7450 3900
F 0 "#PWR010" H 7450 3750 50  0001 C CNN
F 1 "+3.3V" H 7450 4040 50  0000 C CNN
F 2 "" H 7450 3900 50  0000 C CNN
F 3 "" H 7450 3900 50  0000 C CNN
	1    7450 3900
	1    0    0    -1  
$EndComp
$Comp
L R_Small R7
U 1 1 58BBD5DC
P 7150 3900
F 0 "R7" V 7250 3850 50  0000 L CNN
F 1 "10K" V 7050 3850 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 7150 3900 50  0001 C CNN
F 3 "" H 7150 3900 50  0000 C CNN
	1    7150 3900
	0    1    1    0   
$EndComp
$Comp
L GND #PWR011
U 1 1 58BBD6CB
P 6800 4400
F 0 "#PWR011" H 6800 4150 50  0001 C CNN
F 1 "GND" H 6650 4350 50  0000 C CNN
F 2 "" H 6800 4400 50  0000 C CNN
F 3 "" H 6800 4400 50  0000 C CNN
	1    6800 4400
	1    0    0    -1  
$EndComp
$Comp
L R_Small R5
U 1 1 58BBD6F3
P 6800 4250
F 0 "R5" H 6850 4300 50  0000 L CNN
F 1 "10K" H 6850 4200 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 6800 4250 50  0001 C CNN
F 3 "" H 6800 4250 50  0000 C CNN
	1    6800 4250
	1    0    0    -1  
$EndComp
$Comp
L TPS769XX U3
U 1 1 58BBD7D2
P 7600 4850
F 0 "U3" H 7350 5150 50  0000 C CNN
F 1 "AP2112" H 7750 5150 50  0000 C CNN
F 2 "TO_SOT_Packages_SMD:SOT-23-5_HandSoldering" H 7600 4950 50  0001 C CIN
F 3 "" H 7600 4850 50  0000 C CNN
	1    7600 4850
	-1   0    0    -1  
$EndComp
$Comp
L +3.3V #PWR012
U 1 1 58BBDA6C
P 6900 4700
F 0 "#PWR012" H 6900 4550 50  0001 C CNN
F 1 "+3.3V" H 6900 4850 50  0000 C CNN
F 2 "" H 6900 4700 50  0000 C CNN
F 3 "" H 6900 4700 50  0000 C CNN
	1    6900 4700
	-1   0    0    -1  
$EndComp
$Comp
L CONN_01X02 P2
U 1 1 58BBDA98
P 8600 4900
F 0 "P2" H 8600 5050 50  0000 C CNN
F 1 "Battery CONN" V 8700 4900 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 8600 4900 50  0001 C CNN
F 3 "" H 8600 4900 50  0000 C CNN
	1    8600 4900
	1    0    0    1   
$EndComp
$Comp
L GND #PWR013
U 1 1 58BBDB81
P 7600 5250
F 0 "#PWR013" H 7600 5000 50  0001 C CNN
F 1 "GND" H 7600 5100 50  0000 C CNN
F 2 "" H 7600 5250 50  0000 C CNN
F 3 "" H 7600 5250 50  0000 C CNN
	1    7600 5250
	-1   0    0    -1  
$EndComp
$Comp
L GND #PWR014
U 1 1 58BBDD34
P 8400 5150
F 0 "#PWR014" H 8400 4900 50  0001 C CNN
F 1 "GND" H 8400 5000 50  0000 C CNN
F 2 "" H 8400 5150 50  0000 C CNN
F 3 "" H 8400 5150 50  0000 C CNN
	1    8400 5150
	-1   0    0    -1  
$EndComp
$Comp
L CONN_01X06 P3
U 1 1 58BBDEAA
P 8700 3650
F 0 "P3" H 8700 4000 50  0000 C CNN
F 1 "FTDI Flashing CONN" V 8800 3650 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm" H 8700 3650 50  0001 C CNN
F 3 "" H 8700 3650 50  0000 C CNN
	1    8700 3650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR015
U 1 1 58BBDF88
P 8100 3000
F 0 "#PWR015" H 8100 2750 50  0001 C CNN
F 1 "GND" H 8100 2850 50  0000 C CNN
F 2 "" H 8100 3000 50  0000 C CNN
F 3 "" H 8100 3000 50  0000 C CNN
	1    8100 3000
	1    0    0    -1  
$EndComp
Text Label 8400 3700 0    60   ~ 0
TX
Text Label 8400 3800 0    60   ~ 0
RX
$Comp
L R_Small R6
U 1 1 58BBEC6E
P 6950 2950
F 0 "R6" H 6800 2950 50  0000 L CNN
F 1 "10K" H 7000 2950 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 6950 2950 50  0001 C CNN
F 3 "" H 6950 2950 50  0000 C CNN
	1    6950 2950
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR016
U 1 1 58BBED05
P 6950 2650
F 0 "#PWR016" H 6950 2500 50  0001 C CNN
F 1 "+3.3V" H 6950 2800 50  0000 C CNN
F 2 "" H 6950 2650 50  0000 C CNN
F 3 "" H 6950 2650 50  0000 C CNN
	1    6950 2650
	1    0    0    -1  
$EndComp
Text Label 8400 3600 0    60   ~ 0
5V
Text Label 8500 3500 2    60   ~ 0
CTS
Text Label 8500 3400 2    60   ~ 0
GND
Text Label 8500 3900 2    60   ~ 0
DTR
Text Label 8300 4950 2    60   ~ 0
PWR
NoConn ~ 5000 4100
NoConn ~ 5000 4000
NoConn ~ 5000 3900
NoConn ~ 5000 3800
NoConn ~ 5000 3600
NoConn ~ 7150 4850
$Comp
L PWR_FLAG #FLG017
U 1 1 58BBEBAB
P 8200 4850
F 0 "#FLG017" H 8200 4945 50  0001 C CNN
F 1 "PWR_FLAG" H 8250 5050 50  0000 C CNN
F 2 "" H 8200 4850 50  0000 C CNN
F 3 "" H 8200 4850 50  0000 C CNN
	1    8200 4850
	1    0    0    -1  
$EndComp
$Comp
L C_Small C4
U 1 1 58CE4E44
P 8300 4450
F 0 "C4" V 8350 4500 50  0000 L CNN
F 1 "DNP" V 8350 4300 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206_HandSoldering" H 8300 4450 50  0001 C CNN
F 3 "" H 8300 4450 50  0000 C CNN
	1    8300 4450
	0    1    1    0   
$EndComp
$Comp
L GND #PWR018
U 1 1 58CE4ED3
P 8550 4450
F 0 "#PWR018" H 8550 4200 50  0001 C CNN
F 1 "GND" H 8550 4300 50  0000 C CNN
F 2 "" H 8550 4450 50  0000 C CNN
F 3 "" H 8550 4450 50  0000 C CNN
	1    8550 4450
	1    0    0    -1  
$EndComp
$Comp
L C_Small C3
U 1 1 58CE500B
P 6800 4800
F 0 "C3" H 6800 4700 50  0000 L CNN
F 1 "1u" H 6700 4700 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206_HandSoldering" H 6800 4800 50  0001 C CNN
F 3 "" H 6800 4800 50  0000 C CNN
	1    6800 4800
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR019
U 1 1 58CE504A
P 6600 5000
F 0 "#PWR019" H 6600 4750 50  0001 C CNN
F 1 "GND" H 6600 4850 50  0000 C CNN
F 2 "" H 6600 5000 50  0000 C CNN
F 3 "" H 6600 5000 50  0000 C CNN
	1    6600 5000
	1    0    0    -1  
$EndComp
Text Notes 3950 2750 0    60   ~ 0
Buzzer will ring when \nthe bell is pressed
Text Notes 8900 3900 0    60   ~ 0
Flashing connector is\nused to flash the firmware\nfor the very first time.\n\nCTS, DTR are pulled out for\npossible future use case.
Text Notes 1950 4100 1    60   ~ 0
Bell connector connects to \nthe actual door bell wires
Text Notes 8800 5000 0    60   ~ 0
Battery connector connects \nto 3 AA batteries with 4.5V
Text Notes 2800 4300 0    60   ~ 0
RC filter
Wire Wire Line
	3600 3150 3600 3300
Wire Wire Line
	3600 3700 3600 3800
Wire Wire Line
	2900 3500 3200 3500
Wire Wire Line
	3100 3600 3100 3500
Connection ~ 3100 3500
Wire Wire Line
	3100 3800 3100 4000
Wire Wire Line
	2350 3500 2700 3500
Wire Wire Line
	4800 3700 5000 3700
Wire Wire Line
	4600 3700 4350 3700
Wire Wire Line
	6800 3900 7050 3900
Wire Wire Line
	7250 3900 7450 3900
Wire Wire Line
	6800 4100 6800 4150
Wire Wire Line
	6800 4350 6800 4400
Wire Wire Line
	7600 5150 7600 5250
Wire Wire Line
	8050 4850 8400 4850
Wire Wire Line
	8050 3600 8050 4850
Wire Wire Line
	8400 4950 8400 5150
Wire Wire Line
	8500 3600 8050 3600
Connection ~ 8050 4700
Wire Wire Line
	6800 4000 6950 4000
Connection ~ 8200 4850
Wire Wire Line
	4700 2900 4700 3000
Connection ~ 5900 2900
Wire Notes Line
	2700 3300 3250 3300
Wire Notes Line
	3250 3300 3250 4200
Wire Notes Line
	3250 4200 2700 4200
Wire Notes Line
	2700 4200 2700 3300
Wire Notes Line
	2250 2900 2250 4400
Wire Notes Line
	2250 4400 4050 4400
Wire Notes Line
	4050 4400 4050 2900
Wire Notes Line
	4050 2900 2250 2900
Text Notes 2800 4500 0    60   ~ 0
Debouncing circuit
Wire Wire Line
	2400 3600 2350 3600
Connection ~ 2400 3500
Wire Wire Line
	2400 3200 2400 3050
Wire Wire Line
	2400 3050 2600 3050
Wire Wire Line
	2400 3500 2400 3400
Wire Wire Line
	2400 3600 2400 3900
Wire Wire Line
	2400 3900 2550 3900
$Comp
L R_Small R4
U 1 1 58FE989D
P 4800 3500
F 0 "R4" V 4700 3500 50  0000 L CNN
F 1 "0R" V 4700 3350 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 4800 3500 50  0001 C CNN
F 3 "" H 4800 3500 50  0000 C CNN
	1    4800 3500
	0    1    1    0   
$EndComp
Wire Wire Line
	5000 3500 4900 3500
Wire Wire Line
	4700 3500 4100 3500
Wire Wire Line
	4700 2900 6200 2900
$Comp
L C_Small C5
U 1 1 59070B2B
P 6300 2550
F 0 "C5" V 6250 2600 50  0000 L CNN
F 1 "10u" V 6250 2350 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206_HandSoldering" H 6300 2550 50  0001 C CNN
F 3 "" H 6300 2550 50  0000 C CNN
	1    6300 2550
	0    1    1    0   
$EndComp
Wire Wire Line
	5900 2500 5900 2900
Wire Wire Line
	6200 2550 5900 2550
Connection ~ 5900 2550
$Comp
L GND #PWR020
U 1 1 59070D65
P 6650 2550
F 0 "#PWR020" H 6650 2300 50  0001 C CNN
F 1 "GND" H 6650 2400 50  0000 C CNN
F 2 "" H 6650 2550 50  0000 C CNN
F 3 "" H 6650 2550 50  0000 C CNN
	1    6650 2550
	1    0    0    -1  
$EndComp
Wire Wire Line
	6400 2550 6650 2550
Wire Wire Line
	6400 2900 6650 2900
Wire Wire Line
	8200 4450 8050 4450
Connection ~ 8050 4450
Wire Wire Line
	8400 4450 8550 4450
$Comp
L GND #PWR021
U 1 1 59071152
P 8550 4250
F 0 "#PWR021" H 8550 4000 50  0001 C CNN
F 1 "GND" H 8550 4100 50  0000 C CNN
F 2 "" H 8550 4250 50  0000 C CNN
F 3 "" H 8550 4250 50  0000 C CNN
	1    8550 4250
	1    0    0    -1  
$EndComp
$Comp
L C_Small C7
U 1 1 590711CA
P 8300 4250
F 0 "C7" V 8350 4300 50  0000 L CNN
F 1 "1u" V 8350 4050 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206_HandSoldering" H 8300 4250 50  0001 C CNN
F 3 "" H 8300 4250 50  0000 C CNN
	1    8300 4250
	0    1    1    0   
$EndComp
Wire Wire Line
	8200 4250 8050 4250
Connection ~ 8050 4250
Wire Wire Line
	8400 4250 8550 4250
$Comp
L C_Small C6
U 1 1 590712F7
P 6600 4800
F 0 "C6" H 6450 4900 50  0000 L CNN
F 1 "DNP" H 6400 4700 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206_HandSoldering" H 6600 4800 50  0001 C CNN
F 3 "" H 6600 4800 50  0000 C CNN
	1    6600 4800
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR022
U 1 1 5907137C
P 6800 5000
F 0 "#PWR022" H 6800 4750 50  0001 C CNN
F 1 "GND" H 6800 4850 50  0000 C CNN
F 2 "" H 6800 5000 50  0000 C CNN
F 3 "" H 6800 5000 50  0000 C CNN
	1    6800 5000
	1    0    0    -1  
$EndComp
Wire Wire Line
	6950 4000 6950 3050
Wire Wire Line
	6950 2850 6950 2650
Wire Wire Line
	6800 3500 7850 3500
Wire Wire Line
	7850 3500 7850 3800
Wire Wire Line
	7850 3800 8500 3800
Wire Wire Line
	6800 3600 8000 3600
Wire Wire Line
	8000 3600 8000 3700
Wire Wire Line
	8000 3700 8500 3700
Wire Wire Line
	8500 3400 8500 3000
Wire Wire Line
	8500 3000 8100 3000
$Comp
L CONN_01X02 P4
U 1 1 59074415
P 7600 4100
F 0 "P4" H 7600 4250 50  0000 C CNN
F 1 "Boot JUMPER" V 7700 4100 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 7600 4100 50  0001 C CNN
F 3 "" H 7600 4100 50  0000 C CNN
	1    7600 4100
	1    0    0    -1  
$EndComp
Wire Wire Line
	7000 3900 7000 4050
Wire Wire Line
	7000 4050 7400 4050
Connection ~ 7000 3900
$Comp
L GND #PWR023
U 1 1 59074532
P 7400 4250
F 0 "#PWR023" H 7400 4000 50  0001 C CNN
F 1 "GND" H 7400 4100 50  0000 C CNN
F 2 "" H 7400 4250 50  0000 C CNN
F 3 "" H 7400 4250 50  0000 C CNN
	1    7400 4250
	1    0    0    -1  
$EndComp
Wire Wire Line
	7400 4150 7400 4250
Wire Wire Line
	6800 3700 7950 3700
Wire Wire Line
	7950 3700 7950 3500
Wire Wire Line
	7950 3500 8500 3500
Wire Wire Line
	6800 3800 7000 3800
Wire Wire Line
	7000 3800 7000 3400
Wire Wire Line
	7000 3400 7800 3400
Wire Wire Line
	7800 3400 7800 3900
Wire Wire Line
	7800 3900 8500 3900
$Comp
L R_Small R8
U 1 1 5912943F
P 7050 4700
F 0 "R8" V 6950 4650 50  0000 L CNN
F 1 "0R" V 7150 4650 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 7050 4700 50  0001 C CNN
F 3 "" H 7050 4700 50  0000 C CNN
	1    7050 4700
	0    1    1    0   
$EndComp
Wire Wire Line
	6600 4700 6950 4700
Connection ~ 6800 4700
Wire Wire Line
	6600 4900 6600 5000
Wire Wire Line
	6800 4900 6800 5000
Connection ~ 6900 4700
$Comp
L R_Small R9
U 1 1 59937CCF
P 4850 3200
F 0 "R9" V 4750 3200 50  0000 L CNN
F 1 "0R" V 4750 3050 50  0000 L CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 4850 3200 50  0001 C CNN
F 3 "" H 4850 3200 50  0000 C CNN
	1    4850 3200
	0    1    1    0   
$EndComp
Wire Wire Line
	4950 3200 4950 3500
Connection ~ 4950 3500
Wire Wire Line
	4750 3200 4700 3200
$EndSCHEMATC