Bosch BMP280 Environmental Sensor
The bmp280
sensor platform allows you to read temperature and pressure values of a Bosch BMP280 Environmental sensor connected via I2C bus (SDA, SCL pins).
This integration has been tested on a Raspberry Pi 4B, but it should work on any device which is supported by CircuitPython.
Configuration
To use a BMP280 sensor in your installation, you have to enable I2C on your host device then configure the integration using the following example:
sensor:
- platform: bmp280
- i2c_address: 0x77
Setting up the I2C interface on the host device
To get more information on how to set up the I2C interface on your Raspberry Pi, please refer to the BME680 sensor integration.
Choosing the appropriate I2C address
Please note that the I2C address of this device depends on the state of the SDO
pin. If it is pulled down (to the GND
rail) it will be 0x76
, if it’s pulled up (to the VCC
rail) it will be 0x77
.
If you leave it floating then the address will be unpredictable or even worse, it can change over time. So it is recommended to hook up this pin to either the positive or the negative rail of your host device.