Python-based drivers for
- Sensirion SPS30 particulate matter sensor.
- Sensirion SEN54 environmental sensor node for PM, RH/T, VOC measurements
- Sensirion SEN55 environmental sensor node for PM, RH/T, VOC, NOx measurements
- Sensirion SHT40 .1.8% / max. .3.5% Digital humidity and temperature sensor.
- BOSCH BMP280 absolute barometric pressure sensor
Tested on Raspberry Pi Zero/Zero W2.
Pin 1 Pin 5
| |
V V
.------------------------------------------------.
| .-----------. |
| | x x x x x | |
| '-----------' |
| [] [] [] [] |
'------------------------------------------------'
| Pin | Description | UART | I2C |
|---|---|---|---|
| 1 | Supply voltage 5V | VDD | VDD |
| 2 | UART receiving pin/ I2C serial data input/ output | RX | SDA |
| 3 | UART transmitting pin/ I2C serial clock input | TX | SCL |
| 4 | Interface select (UART: floating (NC) /I2C: GND) | NC | GND |
| 5 | Ground | GND | GND |
.---------\ Pin 6 Pin 1
| \ | |
| \ V V
|--------------------------------------------------.
| .-------------. |
| | x x x x x x | |
| '-------------' |
| [] [] [] [] |
'--------------------------------------------------'
| Pin | Description | I2C |
|---|---|---|
| 1 | Supply voltage 5V | VDD |
| 2 | Ground | GND |
| 3 | I2C serial data input/ output | SDA |
| 4 | I2C serial clock input | SCL |
| 5 | Interface select (/I2C: GND) | GND |
| 6 | Not connected | - |
| Pin | Description | I2C |
|---|---|---|
| 1 | Supply voltage 3.3/5V | VDD |
| 2 | Ground | GND |
| 3 | I2C serial clock input | SCL |
| 4 | I2C serial data input / output | SDA |
| 5 | Interface select (I2C: VDD/SPI: GND) | CSB |
| 6 | Sensr Addess (0x76: GND / 0x77: VCC) | SDO |
SPS30 Sensor Pins Raspberry Pi Pins
[default, see below for alternative i2c buses]
.-------.-----. .----------.---------.
| Pin 1 | VDD |-----------------------------| 5V | Pin 2/4 |
| Pin 2 | SDA |-----------------------------| I2C1 SDA | Pin 3 |
| Pin 3 | SCL |-----------------------------| I2C1 SCL | Pin 5 |
| Pin 4 | GND |-----. | | |
| Pin 5 | GND |-----'-----------------------| GND | Pin 6/9 |
'-------'-----' '----------'---------'
SEN5x Sensor Pins Raspberry Pi Pins
[default, see below for alternative i2c buses]
.-------.-----. .----------.---------.
| Pin 1 | VDD |-----------------------------| 5V | Pin 2/4 |
| Pin 2 | GND |-----------------------------| GND | Pin 6/9 |
| Pin 3 | SDA |-----------------------------| I2C1 SDA | Pin 3 |
| Pin 4 | SCL |-----------------------------| I2C1 SCL | Pin 5 |
| Pin 5 | SEL |-----------------------------| GND | Pin 6/9 |
| Pin 6 | NC |------- | | |
'-------'-----' '----------'---------'
BMP280 Sensor Pins Raspberry Pi Pins
[default, see below for alternative i2c buses]
.-------.-----. .----------.---------.
| Pin 1 | VDD |-----------------------------| 5V | Pin 2/4 |
| Pin 2 | GND |-----------------------------| GND | Pin 6/9 |
| Pin 3 | SCL |-----------------------------| I2C1 SCL | Pin 5 |
| Pin 4 | SDA |-----------------------------| I2C1 SDA | Pin 3 |
| Pin 5 | CSB |-----------------------------| VCC | Pin 2/4 |
| Pin 6 | SD0 |-----------------------------| VCC | Pin 2/4 |
'-------'-----' '----------'---------'
Note: SCL and SDA lines are OPEN DRAIN. They should be connected to external pull-up resistors (E.g. R=10kOhm)
sudo nano /boot/config.txt
dtoverlay=i2c-gpio,bus=5,i2c_gpio_delay_us=20,i2c_gpio_sda=5,i2c_gpio_scl=6
dtoverlay=i2c-gpio,bus=4,i2c_gpio_delay_us=20,i2c_gpio_sda=17,i2c_gpio_scl=22
dtoverlay=i2c-gpio,bus=3,i2c_gpio_delay_us=20,i2c_gpio_sda=27,i2c_gpio_scl=23
Note: On long i2c lines use i2c_gpio_delay_us=100
Small wiring PCB for Raspberry PI
cd AirQmonitor
git clone https://github.com/pklosko/AirQmonitor
Add your sensor.comminuty ID = SC_SENSOR_ID in AirQmonitor.py
sudo vi /etc/rc.local
su - pi -c '/home/pi/AirQmonitor/AirQmonitor.py'
Default parameters of SPS30 class
| Parameter | Value | Description |
|---|---|---|
| bus | 1 | I2C bus of Raspberry Pi |
| address | 0x69 | Default I2C address |
Default parameters of SEN5x class
| Parameter | Value | Description |
|---|---|---|
| bus | 1 | I2C bus of Raspberry Pi |
| address | 0x69 | Default I2C address |
Default parameters of SHT40 class
| Parameter | Value | Description |
|---|---|---|
| bus | 1 | I2C bus of Raspberry Pi |
| address | 0x44 | Default I2C address |
Default parameters of BMP280 class
| Parameter | Value | Description |
|---|---|---|
| bus | 1 | I2C bus of Raspberry Pi |
| address | 0x77 | Default I2C address |
| oversampling T | 1x | temperature oversampling |
| oversampling p | 1x | pressure oversampling |
| standby time | 1s | stand-by time |
| IIR filter | off | IIR filter |
| Mode | forced | mode |
{
"t": 22.02258335240711,
"t1": 22.546321267577,
"h": 41.55664911879148,
"p": 100142.342398298,
"pm1": 1.285,
"pm2": 5.262,
"pm4": 9.045,
"pm10": 10.969,
"nc0": 1.0,
"nc1": 1.0,
"nc2": 4.473,
"nc4": 5.034,
"nc10": 5.11,
"tps": 1.63
}{
"pm1": 1.28,
"pm2": 5.22,
"pm4": 9.45,
"pm10": 10.69,
"h": 51.0,
"t": 21.0,
"voc": 101.9,
"nox": 3276.7 # SEN54 doesn't have NOx sensor
}Sensor.commuinty POST API
See TMEP.cz Wiki
None
None
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent