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microbit-classroom-sensor/sensors.sch

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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" 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 #PWR030
U 1 1 5A7DCB08
P 7000 4300
F 0 "#PWR030" 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 #PWR031
U 1 1 5A7DCB09
P 7000 3350
F 0 "#PWR031" 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 #PWR032
U 1 1 5A7DCB10
P 3700 3900
F 0 "#PWR032" 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 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 #PWR033
U 1 1 5A7DCB18
P 3600 4350
F 0 "#PWR033" 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 #PWR034
U 1 1 5A7DCB0E
P 3200 4000
F 0 "#PWR034" 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
NoConn ~ 4800 3900
NoConn ~ 4800 3800
$EndSCHEMATC