ultrasonic_O2_sensor.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L MCU_ST_STM32F1:STM32F103CBTx U2
U 1 1 5E96ECDA
P 7700 2900
F 0 "U2" H 7650 1311 50  0000 C CNN
F 1 "STM32F103CBTx" H 7650 1220 50  0000 C CNN
F 2 "Package_QFP:LQFP-48_7x7mm_P0.5mm" H 7100 1500 50  0001 R CNN
F 3 "http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00161566.pdf" H 7700 2900 50  0001 C CNN
	1    7700 2900
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U1
U 1 1 5E970E00
P 3200 1600
F 0 "U1" H 3200 1967 50  0000 C CNN
F 1 "LM358" H 3200 1876 50  0000 C CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 3200 1600 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf" H 3200 1600 50  0001 C CNN
	1    3200 1600
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U1
U 2 1 5E9789C2
P 3200 2400
F 0 "U1" H 3200 2767 50  0000 C CNN
F 1 "LM358" H 3200 2676 50  0000 C CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 3200 2400 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf" H 3200 2400 50  0001 C CNN
	2    3200 2400
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U1
U 3 1 5E979D28
P 4300 2050
F 0 "U1" H 4258 2096 50  0000 L CNN
F 1 "LM358" H 4258 2005 50  0000 L CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 4300 2050 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf" H 4300 2050 50  0001 C CNN
	3    4300 2050
	1    0    0    -1  
$EndComp
$Comp
L Interface_UART:MAX3232 U3
U 1 1 5E97BE23
P 2700 4850
F 0 "U3" H 2700 6231 50  0000 C CNN
F 1 "MAX3232" H 2700 6140 50  0000 C CNN
F 2 "Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm" H 2750 3800 50  0001 L CNN
F 3 "https://datasheets.maximintegrated.com/en/ds/MAX3222-MAX3241.pdf" H 2700 4950 50  0001 C CNN
	1    2700 4850
	1    0    0    -1  
$EndComp
Text GLabel 8300 2700 2    50   Input ~ 0
ADC0
Text GLabel 8300 2800 2    50   Input ~ 0
ADC1
Text GLabel 8300 3500 2    50   Input ~ 0
PWM_T1_CH1
Text GLabel 8300 3600 2    50   Input ~ 0
UART_TX
Text GLabel 8300 3700 2    50   Input ~ 0
UART_RX
$Comp
L Device:C C1
U 1 1 5E983EB7
P 2250 1700
F 0 "C1" V 1998 1700 50  0000 C CNN
F 1 "1uF" V 2089 1700 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 2288 1550 50  0001 C CNN
F 3 "~" H 2250 1700 50  0001 C CNN
	1    2250 1700
	0    1    1    0   
$EndComp
$Comp
L Device:R R1
U 1 1 5E985074
P 2650 1700
F 0 "R1" V 2443 1700 50  0000 C CNN
F 1 "100k" V 2534 1700 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" V 2580 1700 50  0001 C CNN
F 3 "~" H 2650 1700 50  0001 C CNN
	1    2650 1700
	0    1    1    0   
$EndComp
$Comp
L Device:R R2
U 1 1 5E988839
P 1100 1900
F 0 "R2" H 1170 1946 50  0000 L CNN
F 1 "1k" H 1170 1855 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" V 1030 1900 50  0001 C CNN
F 3 "~" H 1100 1900 50  0001 C CNN
	1    1100 1900
	1    0    0    -1  
$EndComp
$Comp
L Device:R R5
U 1 1 5E988E4E
P 1100 2300
F 0 "R5" H 1170 2346 50  0000 L CNN
F 1 "1k" H 1170 2255 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" V 1030 2300 50  0001 C CNN
F 3 "~" H 1100 2300 50  0001 C CNN
	1    1100 2300
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR05
U 1 1 5E98ACC4
P 4200 2350
F 0 "#PWR05" H 4200 2100 50  0001 C CNN
F 1 "GND" H 4205 2177 50  0000 C CNN
F 2 "" H 4200 2350 50  0001 C CNN
F 3 "" H 4200 2350 50  0001 C CNN
	1    4200 2350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR06
U 1 1 5E98BD1F
P 1100 2450
F 0 "#PWR06" H 1100 2200 50  0001 C CNN
F 1 "GND" H 1105 2277 50  0000 C CNN
F 2 "" H 1100 2450 50  0001 C CNN
F 3 "" H 1100 2450 50  0001 C CNN
	1    1100 2450
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR01
U 1 1 5E98D5E4
P 1100 1750
F 0 "#PWR01" H 1100 1600 50  0001 C CNN
F 1 "+3V3" H 1115 1923 50  0000 C CNN
F 2 "" H 1100 1750 50  0001 C CNN
F 3 "" H 1100 1750 50  0001 C CNN
	1    1100 1750
	1    0    0    -1  
$EndComp
Wire Wire Line
	1100 2150 1100 2100
Wire Wire Line
	1600 2100 1100 2100
Connection ~ 1100 2100
Wire Wire Line
	1100 2100 1100 2050
Connection ~ 1600 2100
Wire Wire Line
	2900 1700 2850 1700
Wire Wire Line
	2500 1700 2400 1700
$Comp
L Device:C C3
U 1 1 5E9935CB
P 2250 2500
F 0 "C3" V 1998 2500 50  0000 C CNN
F 1 "1uF" V 2089 2500 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 2288 2350 50  0001 C CNN
F 3 "~" H 2250 2500 50  0001 C CNN
	1    2250 2500
	0    1    1    0   
$EndComp
$Comp
L Device:R R6
U 1 1 5E993B0C
P 2650 2500
F 0 "R6" V 2443 2500 50  0000 C CNN
F 1 "100k" V 2534 2500 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" V 2580 2500 50  0001 C CNN
F 3 "~" H 2650 2500 50  0001 C CNN
	1    2650 2500
	0    1    1    0   
$EndComp
Wire Wire Line
	2500 2500 2400 2500
Text GLabel 3750 2400 2    50   Input ~ 0
ADC0
Text GLabel 2100 1700 0    50   Input ~ 0
UTRX0A
Text GLabel 2100 2500 0    50   Input ~ 0
UTRX1A
$Comp
L power:+3V3 #PWR02
U 1 1 5E9A18A2
P 4200 1750
F 0 "#PWR02" H 4200 1600 50  0001 C CNN
F 1 "+3V3" H 4215 1923 50  0000 C CNN
F 2 "" H 4200 1750 50  0001 C CNN
F 3 "" H 4200 1750 50  0001 C CNN
	1    4200 1750
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR03
U 1 1 5E9BBE7D
P 4650 1900
F 0 "#PWR03" H 4650 1750 50  0001 C CNN
F 1 "+3V3" H 4665 2073 50  0000 C CNN
F 2 "" H 4650 1900 50  0001 C CNN
F 3 "" H 4650 1900 50  0001 C CNN
	1    4650 1900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR04
U 1 1 5E9BC2A5
P 4650 2200
F 0 "#PWR04" H 4650 1950 50  0001 C CNN
F 1 "GND" H 4655 2027 50  0000 C CNN
F 2 "" H 4650 2200 50  0001 C CNN
F 3 "" H 4650 2200 50  0001 C CNN
	1    4650 2200
	1    0    0    -1  
$EndComp
Wire Wire Line
	3500 1600 3550 1600
Text GLabel 3750 1600 2    50   Input ~ 0
ADC1
Wire Wire Line
	2900 2500 2850 2500
Wire Wire Line
	3750 2400 3550 2400
Wire Wire Line
	1600 1500 2900 1500
Wire Wire Line
	2900 2300 2100 2300
Wire Wire Line
	1600 2300 1600 2100
$Comp
L Device:R R3
U 1 1 5E9E3E2A
P 3400 1900
F 0 "R3" V 3193 1900 50  0000 C CNN
F 1 "470k" V 3284 1900 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" V 3330 1900 50  0001 C CNN
F 3 "~" H 3400 1900 50  0001 C CNN
	1    3400 1900
	0    1    1    0   
$EndComp
$Comp
L Device:R R7
U 1 1 5E9E4C5E
P 3400 2700
F 0 "R7" V 3193 2700 50  0000 C CNN
F 1 "470k" V 3284 2700 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" V 3330 2700 50  0001 C CNN
F 3 "~" H 3400 2700 50  0001 C CNN
	1    3400 2700
	0    1    1    0   
$EndComp
Wire Wire Line
	3550 1900 3550 1600
Connection ~ 3550 1600
Wire Wire Line
	3550 1600 3750 1600
Wire Wire Line
	3250 1900 2850 1900
Wire Wire Line
	2850 1900 2850 1700
Connection ~ 2850 1700
Wire Wire Line
	2850 1700 2800 1700
Wire Wire Line
	3550 2700 3550 2400
Connection ~ 3550 2400
Wire Wire Line
	3550 2400 3500 2400
Wire Wire Line
	3250 2700 2850 2700
Wire Wire Line
	2850 2700 2850 2500
Connection ~ 2850 2500
Wire Wire Line
	2850 2500 2800 2500
Wire Wire Line
	1600 1500 1600 2100
$Comp
L power:+3V3 #PWR0101
U 1 1 5EA04B5E
P 2700 3650
F 0 "#PWR0101" H 2700 3500 50  0001 C CNN
F 1 "+3V3" H 2715 3823 50  0000 C CNN
F 2 "" H 2700 3650 50  0001 C CNN
F 3 "" H 2700 3650 50  0001 C CNN
	1    2700 3650
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0102
U 1 1 5EA07C1D
P 2700 6050
F 0 "#PWR0102" H 2700 5800 50  0001 C CNN
F 1 "GND" H 2705 5877 50  0000 C CNN
F 2 "" H 2700 6050 50  0001 C CNN
F 3 "" H 2700 6050 50  0001 C CNN
	1    2700 6050
	1    0    0    -1  
$EndComp
Text GLabel 8300 3400 2    50   Input ~ 0
PWM_T1_CH1N
Text GLabel 1900 4950 0    50   Input ~ 0
PWM_T1_CH1
Text GLabel 1900 5150 0    50   Input ~ 0
PWM_T1_CH1N
$Comp
L Device:C C9
U 1 1 5EA2249C
P 1600 4100
F 0 "C9" H 1485 4054 50  0000 R CNN
F 1 "100nF" H 1485 4145 50  0000 R CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 1638 3950 50  0001 C CNN
F 3 "~" H 1600 4100 50  0001 C CNN
	1    1600 4100
	-1   0    0    1   
$EndComp
Wire Wire Line
	1900 3950 1600 3950
Wire Wire Line
	1900 4250 1600 4250
$Comp
L Device:C C10
U 1 1 5EA25410
P 3650 4100
F 0 "C10" H 3535 4054 50  0000 R CNN
F 1 "100nF" H 3535 4145 50  0000 R CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 3688 3950 50  0001 C CNN
F 3 "~" H 3650 4100 50  0001 C CNN
	1    3650 4100
	-1   0    0    1   
$EndComp
Wire Wire Line
	3500 3950 3650 3950
Wire Wire Line
	3500 4250 3650 4250
$Comp
L Device:C C11
U 1 1 5EA27D09
P 3800 4450
F 0 "C11" V 4052 4450 50  0000 C CNN
F 1 "100nF" V 3961 4450 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 3838 4300 50  0001 C CNN
F 3 "~" H 3800 4450 50  0001 C CNN
	1    3800 4450
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C12
U 1 1 5EA28158
P 3800 4750
F 0 "C12" V 4052 4750 50  0000 C CNN
F 1 "100nF" V 3961 4750 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 3838 4600 50  0001 C CNN
F 3 "~" H 3800 4750 50  0001 C CNN
	1    3800 4750
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3500 4450 3650 4450
Wire Wire Line
	3500 4750 3650 4750
$Comp
L power:GND #PWR0103
U 1 1 5EA29A39
P 3950 4750
F 0 "#PWR0103" H 3950 4500 50  0001 C CNN
F 1 "GND" H 3955 4577 50  0000 C CNN
F 2 "" H 3950 4750 50  0001 C CNN
F 3 "" H 3950 4750 50  0001 C CNN
	1    3950 4750
	1    0    0    -1  
$EndComp
Wire Wire Line
	3950 4450 3950 4750
Connection ~ 3950 4750
Text GLabel 3500 4950 2    50   Input ~ 0
UTTX0A
Text GLabel 3500 5150 2    50   Input ~ 0
UTTX0B
Text GLabel 2100 1900 0    50   Input ~ 0
UTRX0B
Wire Wire Line
	2100 1900 2100 2300
Connection ~ 2100 2300
Wire Wire Line
	2100 2300 1600 2300
Text GLabel 2100 2400 0    50   Input ~ 0
UTRX1B
Wire Wire Line
	2100 2400 2100 2300
$Comp
L power:+3V3 #PWR0104
U 1 1 5EA61594
P 7750 1200
F 0 "#PWR0104" H 7750 1050 50  0001 C CNN
F 1 "+3V3" H 7765 1373 50  0000 C CNN
F 2 "" H 7750 1200 50  0001 C CNN
F 3 "" H 7750 1200 50  0001 C CNN
	1    7750 1200
	1    0    0    -1  
$EndComp
Wire Wire Line
	7600 1400 7700 1400
Wire Wire Line
	7700 1400 7750 1400
Connection ~ 7700 1400
Wire Wire Line
	7750 1200 7750 1400
Connection ~ 7750 1400
Wire Wire Line
	7750 1400 7800 1400
$Comp
L power:GND #PWR0105
U 1 1 5EA6732E
P 7350 4400
F 0 "#PWR0105" H 7350 4150 50  0001 C CNN
F 1 "GND" H 7355 4227 50  0000 C CNN
F 2 "" H 7350 4400 50  0001 C CNN
F 3 "" H 7350 4400 50  0001 C CNN
	1    7350 4400
	1    0    0    -1  
$EndComp
Wire Wire Line
	7350 4400 7500 4400
Wire Wire Line
	7500 4400 7600 4400
Connection ~ 7500 4400
Wire Wire Line
	7600 4400 7700 4400
Connection ~ 7600 4400
Wire Wire Line
	7700 4400 7800 4400
Connection ~ 7700 4400
Wire Wire Line
	7900 1400 7800 1400
Connection ~ 7800 1400
$Comp
L Device:C C2
U 1 1 5EA7EB07
P 4650 2050
F 0 "C2" H 4535 2004 50  0000 R CNN
F 1 "100nF" H 4535 2095 50  0000 R CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 4688 1900 50  0001 C CNN
F 3 "~" H 4650 2050 50  0001 C CNN
	1    4650 2050
	-1   0    0    1   
$EndComp
$Comp
L Device:Crystal_GND24 Y1
U 1 1 5EA9F55D
P 6200 2050
F 0 "Y1" V 6154 2294 50  0000 L CNN
F 1 "Crystal_GND24" V 6245 2294 50  0000 L CNN
F 2 "Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering" H 6200 2050 50  0001 C CNN
F 3 "~" H 6200 2050 50  0001 C CNN
	1    6200 2050
	0    1    1    0   
$EndComp
Wire Wire Line
	6200 1900 6800 1900
Wire Wire Line
	6800 1900 6800 2000
Wire Wire Line
	6800 2000 7000 2000
Wire Wire Line
	6200 2200 6800 2200
Wire Wire Line
	6800 2200 6800 2100
Wire Wire Line
	6800 2100 7000 2100
$Comp
L Device:C C7
U 1 1 5EAA35B4
P 5850 1900
F 0 "C7" H 5735 1854 50  0000 R CNN
F 1 "12pF" H 5735 1945 50  0000 R CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 5888 1750 50  0001 C CNN
F 3 "~" H 5850 1900 50  0001 C CNN
	1    5850 1900
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C8
U 1 1 5EAAEF0A
P 5850 2200
F 0 "C8" H 5735 2154 50  0000 R CNN
F 1 "12pF" H 5735 2245 50  0000 R CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 5888 2050 50  0001 C CNN
F 3 "~" H 5850 2200 50  0001 C CNN
	1    5850 2200
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6000 2200 6200 2200
Connection ~ 6200 2200
Wire Wire Line
	6000 1900 6200 1900
Connection ~ 6200 1900
Wire Wire Line
	5700 1900 5700 2050
$Comp
L power:GND #PWR0106
U 1 1 5EAB2497
P 5700 2200
F 0 "#PWR0106" H 5700 1950 50  0001 C CNN
F 1 "GND" H 5705 2027 50  0000 C CNN
F 2 "" H 5700 2200 50  0001 C CNN
F 3 "" H 5700 2200 50  0001 C CNN
	1    5700 2200
	1    0    0    -1  
$EndComp
Connection ~ 5700 2200
Text GLabel 8300 4000 2    50   Input ~ 0
SWDIO
Text GLabel 8300 4100 2    50   Input ~ 0
SWDCLK
$Comp
L ultimate_library:SWD_POGO SC1
U 1 1 5EAB7C2B
P 7400 5300
F 0 "SC1" H 7337 5675 50  0000 C CNN
F 1 "SWD_POGO" H 7337 5584 50  0000 C CNN
F 2 "ultimate_library:SWD_POGO" H 7400 5300 50  0001 C CNN
F 3 "" H 7400 5300 50  0001 C CNN
	1    7400 5300
	1    0    0    -1  
$EndComp
Text GLabel 7600 5150 2    50   Input ~ 0
SWDCLK
Text GLabel 7600 5250 2    50   Input ~ 0
SWDIO
$Comp
L power:GND #PWR0107
U 1 1 5EAB886C
P 7600 5450
F 0 "#PWR0107" H 7600 5200 50  0001 C CNN
F 1 "GND" H 7605 5277 50  0000 C CNN
F 2 "" H 7600 5450 50  0001 C CNN
F 3 "" H 7600 5450 50  0001 C CNN
	1    7600 5450
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR0108
U 1 1 5EABAB50
P 8050 5350
F 0 "#PWR0108" H 8050 5200 50  0001 C CNN
F 1 "+3V3" H 8065 5523 50  0000 C CNN
F 2 "" H 8050 5350 50  0001 C CNN
F 3 "" H 8050 5350 50  0001 C CNN
	1    8050 5350
	1    0    0    -1  
$EndComp
Wire Wire Line
	7600 5350 8050 5350
$Comp
L Connector:Conn_01x03_Male J1
U 1 1 5EAD4728
P 9800 3650
F 0 "J1" H 9908 3931 50  0000 C CNN
F 1 "Conn_01x03_Male" H 9908 3840 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical_SMD_Pin1Left" H 9800 3650 50  0001 C CNN
F 3 "~" H 9800 3650 50  0001 C CNN
	1    9800 3650
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0109
U 1 1 5EAD5F5C
P 10550 3650
F 0 "#PWR0109" H 10550 3400 50  0001 C CNN
F 1 "GND" H 10555 3477 50  0000 C CNN
F 2 "" H 10550 3650 50  0001 C CNN
F 3 "" H 10550 3650 50  0001 C CNN
	1    10550 3650
	1    0    0    -1  
$EndComp
Text GLabel 10000 3550 2    50   Input ~ 0
UART_TX
Text GLabel 10000 3750 2    50   Input ~ 0
UART_RX
Wire Wire Line
	10000 3650 10550 3650
$Comp
L Device:C C4
U 1 1 5EADD7E3
P 8350 1100
F 0 "C4" H 8235 1054 50  0000 R CNN
F 1 "100nF" H 8235 1145 50  0000 R CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 8388 950 50  0001 C CNN
F 3 "~" H 8350 1100 50  0001 C CNN
	1    8350 1100
	-1   0    0    1   
$EndComp
$Comp
L Device:C C5
U 1 1 5EADED45
P 8850 1100
F 0 "C5" H 8735 1054 50  0000 R CNN
F 1 "100nF" H 8735 1145 50  0000 R CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 8888 950 50  0001 C CNN
F 3 "~" H 8850 1100 50  0001 C CNN
	1    8850 1100
	-1   0    0    1   
$EndComp
$Comp
L Device:C C6
U 1 1 5EADF0EA
P 9300 1100
F 0 "C6" H 9185 1054 50  0000 R CNN
F 1 "100nF" H 9185 1145 50  0000 R CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 9338 950 50  0001 C CNN
F 3 "~" H 9300 1100 50  0001 C CNN
	1    9300 1100
	-1   0    0    1   
$EndComp
$Comp
L power:+3V3 #PWR0110
U 1 1 5EADF3AA
P 8150 950
F 0 "#PWR0110" H 8150 800 50  0001 C CNN
F 1 "+3V3" H 8165 1123 50  0000 C CNN
F 2 "" H 8150 950 50  0001 C CNN
F 3 "" H 8150 950 50  0001 C CNN
	1    8150 950 
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0111
U 1 1 5EAE0803
P 8150 1250
F 0 "#PWR0111" H 8150 1000 50  0001 C CNN
F 1 "GND" H 8155 1077 50  0000 C CNN
F 2 "" H 8150 1250 50  0001 C CNN
F 3 "" H 8150 1250 50  0001 C CNN
	1    8150 1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	8150 1250 8350 1250
Wire Wire Line
	8350 1250 8850 1250
Connection ~ 8350 1250
Wire Wire Line
	8850 1250 9300 1250
Connection ~ 8850 1250
Wire Wire Line
	8150 950  8350 950 
Wire Wire Line
	8350 950  8850 950 
Connection ~ 8350 950 
Wire Wire Line
	8850 950  9300 950 
Connection ~ 8850 950 
$Comp
L Connector:Conn_01x02_Male J2
U 1 1 5EAFCD3B
P 1350 2950
F 0 "J2" H 1458 3131 50  0000 C CNN
F 1 "Conn_01x02_Male" H 1458 3040 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical_SMD" H 1350 2950 50  0001 C CNN
F 3 "~" H 1350 2950 50  0001 C CNN
	1    1350 2950
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x02_Male J3
U 1 1 5EAFDF07
P 1350 3250
F 0 "J3" H 1458 3431 50  0000 C CNN
F 1 "Conn_01x02_Male" H 1458 3340 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical_SMD" H 1350 3250 50  0001 C CNN
F 3 "~" H 1350 3250 50  0001 C CNN
	1    1350 3250
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x02_Male J4
U 1 1 5EAFE4AE
P 1350 3500
F 0 "J4" H 1458 3681 50  0000 C CNN
F 1 "Conn_01x02_Male" H 1458 3590 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical_SMD" H 1350 3500 50  0001 C CNN
F 3 "~" H 1350 3500 50  0001 C CNN
	1    1350 3500
	1    0    0    -1  
$EndComp
Text GLabel 1550 3050 2    50   Input ~ 0
UTRX0B
Text GLabel 1550 2950 2    50   Input ~ 0
UTRX0A
Text GLabel 1550 3350 2    50   Input ~ 0
UTRX1B
Text GLabel 1550 3250 2    50   Input ~ 0
UTRX1A
Text GLabel 1550 3500 2    50   Input ~ 0
UTTX0A
Text GLabel 1550 3600 2    50   Input ~ 0
UTTX0B
Wire Wire Line
	6000 2050 5700 2050
Connection ~ 5700 2050
Wire Wire Line
	5700 2050 5700 2200
$Comp
L power:GND #PWR0112
U 1 1 5EB0E5BD
P 6400 2050
F 0 "#PWR0112" H 6400 1800 50  0001 C CNN
F 1 "GND" H 6405 1877 50  0000 C CNN
F 2 "" H 6400 2050 50  0001 C CNN
F 3 "" H 6400 2050 50  0001 C CNN
	1    6400 2050
	1    0    0    -1  
$EndComp
$Comp
L Regulator_Linear:MCP1703A-3302_SOT23 U4
U 1 1 5EB2EBD6
P 5650 3950
F 0 "U4" H 5650 4192 50  0000 C CNN
F 1 "MCP1703A-3302_SOT23" H 5650 4101 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 5650 4150 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/20005122B.pdf" H 5650 3900 50  0001 C CNN
	1    5650 3950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR011
U 1 1 5EB32A9E
P 5650 4250
F 0 "#PWR011" H 5650 4000 50  0001 C CNN
F 1 "GND" H 5655 4077 50  0000 C CNN
F 2 "" H 5650 4250 50  0001 C CNN
F 3 "" H 5650 4250 50  0001 C CNN
	1    5650 4250
	1    0    0    -1  
$EndComp
$Comp
L Device:C C13
U 1 1 5EB35CFD
P 5050 4100
F 0 "C13" V 4798 4100 50  0000 C CNN
F 1 "1uF" V 4889 4100 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 5088 3950 50  0001 C CNN
F 3 "~" H 5050 4100 50  0001 C CNN
	1    5050 4100
	-1   0    0    1   
$EndComp
$Comp
L Device:C C14
U 1 1 5EB396E9
P 6250 4100
F 0 "C14" V 5998 4100 50  0000 C CNN
F 1 "1uF" V 6089 4100 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 6288 3950 50  0001 C CNN
F 3 "~" H 6250 4100 50  0001 C CNN
	1    6250 4100
	-1   0    0    1   
$EndComp
Wire Wire Line
	5050 4250 5650 4250
Connection ~ 5650 4250
Wire Wire Line
	6250 4250 5650 4250
Wire Wire Line
	5350 3950 5050 3950
Wire Wire Line
	5950 3950 6250 3950
$Comp
L power:+3V3 #PWR010
U 1 1 5EB42C04
P 6250 3950
F 0 "#PWR010" H 6250 3800 50  0001 C CNN
F 1 "+3V3" H 6265 4123 50  0000 C CNN
F 2 "" H 6250 3950 50  0001 C CNN
F 3 "" H 6250 3950 50  0001 C CNN
	1    6250 3950
	1    0    0    -1  
$EndComp
Connection ~ 6250 3950
$Comp
L power:+5V #PWR09
U 1 1 5EB46E25
P 5050 3950
F 0 "#PWR09" H 5050 3800 50  0001 C CNN
F 1 "+5V" H 5065 4123 50  0000 C CNN
F 2 "" H 5050 3950 50  0001 C CNN
F 3 "" H 5050 3950 50  0001 C CNN
	1    5050 3950
	1    0    0    -1  
$EndComp
Connection ~ 5050 3950
$Comp
L Connector:Conn_01x02_Male J5
U 1 1 5EB4A630
P 4500 3250
F 0 "J5" H 4608 3431 50  0000 C CNN
F 1 "Conn_01x02_Male" H 4608 3340 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical_SMD" H 4500 3250 50  0001 C CNN
F 3 "~" H 4500 3250 50  0001 C CNN
	1    4500 3250
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR07
U 1 1 5EB4CC29
P 4700 3250
F 0 "#PWR07" H 4700 3100 50  0001 C CNN
F 1 "+5V" H 4715 3423 50  0000 C CNN
F 2 "" H 4700 3250 50  0001 C CNN
F 3 "" H 4700 3250 50  0001 C CNN
	1    4700 3250
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR08
U 1 1 5EB4DD62
P 4700 3350
F 0 "#PWR08" H 4700 3100 50  0001 C CNN
F 1 "GND" H 4705 3177 50  0000 C CNN
F 2 "" H 4700 3350 50  0001 C CNN
F 3 "" H 4700 3350 50  0001 C CNN
	1    4700 3350
	1    0    0    -1  
$EndComp
$EndSCHEMATC