microbit-classroom-sensor/sensors.sch

EESchema Schematic File Version 2
LIBS:lts-proto-rescue
LIBS:power
LIBS:device
LIBS:switches
LIBS:relays
LIBS:motors
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:lts
LIBS:lts-proto-cache
EELAYER 25 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 2 2
Title "Sensors"
Date "2018-03-11"
Rev "AB"
Comp "Let's Talk Science"
Comment1 "Shawn Nock <shawn@monadnock.ca>"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Si7006-A20 U9
U 1 1 5A7DCB07
P 7050 3800
AR Path="/5A7DCB07" Ref="U9"  Part="1" 
AR Path="/5A7DC600/5A7DCB07" Ref="U9"  Part="1" 
F 0 "U9" H 7200 3550 39  0000 C CNN
F 1 "Si7006-A20" V 6900 3700 39  0000 C CNN
F 2 "lts:DFN6_SiLabs_3x3_HandSoldering" H 7050 3800 39  0001 C CNN
F 3 "" H 7050 3800 39  0001 C CNN
F 4 "336-4155-1-ND" H 7050 3800 60  0001 C CNN "Digikey"
F 5 "3.195" H 7050 3800 60  0001 C CNN "@100"
F 6 "2.875" H 7050 3800 60  0001 C CNN "@1000"
	1    7050 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	7350 3750 7500 3750
Wire Wire Line
	7350 3900 7500 3900
$Comp
L GND #PWR033
U 1 1 5A7DCB08
P 7000 4300
F 0 "#PWR033" H 7000 4050 50  0001 C CNN
F 1 "GND" H 7000 4150 50  0000 C CNN
F 2 "" H 7000 4300 50  0001 C CNN
F 3 "" H 7000 4300 50  0001 C CNN
	1    7000 4300
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR034
U 1 1 5A7DCB09
P 7000 3350
F 0 "#PWR034" H 7000 3200 50  0001 C CNN
F 1 "+3.3V" H 7000 3490 50  0000 C CNN
F 2 "" H 7000 3350 50  0001 C CNN
F 3 "" H 7000 3350 50  0001 C CNN
	1    7000 3350
	1    0    0    -1  
$EndComp
Wire Wire Line
	7000 3350 7000 3500
$Comp
L C C14
U 1 1 5A7DCB0C
P 6550 3800
F 0 "C14" H 6575 3900 50  0000 L CNN
F 1 "0.1uF" H 6575 3700 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 6588 3650 50  0001 C CNN
F 3 "" H 6550 3800 50  0001 C CNN
	1    6550 3800
	1    0    0    -1  
$EndComp
Text Notes 6400 3100 0    60   ~ 0
Temperature and Humidity
NoConn ~ 4800 3600
NoConn ~ 4800 3700
NoConn ~ 4800 4000
$Comp
L GND #PWR035
U 1 1 5A7DCB10
P 3700 3900
F 0 "#PWR035" H 3700 3650 50  0001 C CNN
F 1 "GND" H 3700 3750 50  0000 C CNN
F 2 "" H 3700 3900 50  0001 C CNN
F 3 "" H 3700 3900 50  0001 C CNN
	1    3700 3900
	0    1    1    0   
$EndComp
Wire Wire Line
	4800 3900 4950 3900
Wire Wire Line
	4800 3800 4950 3800
$Comp
L TEST_1P J20
U 1 1 5A7DCB12
P 4950 3800
F 0 "J20" V 4950 4000 50  0000 C CNN
F 1 "CO2_TX" V 4850 3950 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Small" H 5150 3800 50  0001 C CNN
F 3 "" H 5150 3800 50  0001 C CNN
	1    4950 3800
	0    1    1    0   
$EndComp
$Comp
L TEST_1P J21
U 1 1 5A7DCB13
P 4950 3900
F 0 "J21" V 4950 4100 50  0000 C CNN
F 1 "CO2_RX" V 5050 4050 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Small" H 5150 3900 50  0001 C CNN
F 3 "" H 5150 3900 50  0001 C CNN
	1    4950 3900
	0    1    1    0   
$EndComp
$Comp
L TEST_1P J22
U 1 1 5A7DCB14
P 4950 4300
F 0 "J22" V 4950 4500 50  0000 C CNN
F 1 "GND" V 5050 4400 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Square-SMD-Pad_Small" H 5150 4300 50  0001 C CNN
F 3 "" H 5150 4300 50  0001 C CNN
	1    4950 4300
	0    1    1    0   
$EndComp
$Comp
L GND #PWR036
U 1 1 5A7DCB15
P 4950 4300
F 0 "#PWR036" H 4950 4050 50  0001 C CNN
F 1 "GND" H 4950 4150 50  0000 C CNN
F 2 "" H 4950 4300 50  0001 C CNN
F 3 "" H 4950 4300 50  0001 C CNN
	1    4950 4300
	0    1    1    0   
$EndComp
Wire Notes Line
	5550 4600 5550 3050
$Comp
L MH-Z19 U7
U 1 1 5A7DCB16
P 4250 3800
F 0 "U7" H 4650 4150 60  0000 C CNN
F 1 "MH-Z19" H 4250 3550 60  0000 C CNN
F 2 "lts:MH-Z19" H 4250 3850 60  0001 C CNN
F 3 "" H 4250 3850 60  0001 C CNN
F 4 "18.00" H 4250 3800 60  0001 C CNN "@100"
F 5 "17.1" H 4250 3800 60  0001 C CNN "@1000"
	1    4250 3800
	1    0    0    -1  
$EndComp
$Comp
L C C12
U 1 1 5A7DCB19
P 3600 4150
F 0 "C12" H 3625 4250 50  0000 L CNN
F 1 "0.1uF" H 3625 4050 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 3638 4000 50  0001 C CNN
F 3 "" H 3600 4150 50  0001 C CNN
	1    3600 4150
	1    0    0    -1  
$EndComp
Connection ~ 3600 4000
NoConn ~ 3700 3800
Wire Notes Line
	6350 4550 6350 3000
Text Notes 2600 3150 0    60   ~ 0
CO2 Sensor (Infrared)
Wire Wire Line
	3600 4350 3600 4300
$Comp
L GND #PWR037
U 1 1 5A7DCB18
P 3600 4350
F 0 "#PWR037" H 3600 4100 50  0001 C CNN
F 1 "GND" H 3600 4200 50  0000 C CNN
F 2 "" H 3600 4350 50  0001 C CNN
F 3 "" H 3600 4350 50  0001 C CNN
	1    3600 4350
	1    0    0    -1  
$EndComp
Wire Notes Line
	2550 4600 2550 3050
Wire Notes Line
	2550 4600 5550 4600
Wire Notes Line
	2550 3050 5550 3050
Wire Wire Line
	3200 4000 3700 4000
$Comp
L +5V #PWR038
U 1 1 5A7DCB0E
P 3200 4000
F 0 "#PWR038" H 3200 3850 50  0001 C CNN
F 1 "+5V" H 3200 4140 50  0000 C CNN
F 2 "" H 3200 4000 50  0001 C CNN
F 3 "" H 3200 4000 50  0001 C CNN
	1    3200 4000
	0    -1   -1   0   
$EndComp
Text GLabel 3500 3700 0    45   Input ~ 0
CO2_SENSOR
Text GLabel 7500 3900 2    45   Input ~ 0
SDA
Text GLabel 7500 3750 2    45   Input ~ 0
SCL
Wire Wire Line
	7000 3450 6550 3450
Wire Wire Line
	6550 3450 6550 3650
Connection ~ 7000 3450
Wire Wire Line
	7000 4200 7000 4300
Wire Wire Line
	7000 4250 6550 4250
Wire Wire Line
	6550 4250 6550 3950
Connection ~ 7000 4250
Wire Notes Line
	6350 4550 7850 4550
Wire Notes Line
	7850 4550 7850 3000
Wire Notes Line
	7850 3000 6350 3000
Text Notes 7300 4550 0    45   ~ 0
I2C Addr.: 0x40
Text Notes 2650 3250 0    30   ~ 0
CO2 (0-2000ppm; ±50ppm & 5%)
Text Notes 6500 3150 0    30   ~ 0
±1°C & 5% RH
Wire Wire Line
	3500 3700 3700 3700
$EndSCHEMATC