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Description: BME280 - I2C/SPI digital humidity, temperature and pressure sensor - SparkFun SEN-13676
Digital sensor allows to measure current atmospheric conditions: temperature from -40 °C to 85 °C, humidity from 0 to 100 %Rh and pressure from 300 hPa to 1100 hPa . The last value also allows for indirect height measurement up to 9,2 km with an average accuracy of 1 m. The sensor communicates via the I2C or SPI bus, the leads work with a voltage of 3.3 V, however the I2C lines tolerate a higher value up to 5 V. This allows the sensor to be operated directly from Arduino boards.
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Product compatible with Arduino The manufacturer has prepared a user guide and a library on GitHub. |
Connection of BME280 sensor
Board has 10 holes with 2,54 mm raster, which allow to solder goldpin connector strip (kit doesn't include connectors, you can buy them separately).
| Pin | Description |
|---|---|
| GND | System ground |
| 3.3V | Supply voltage from 1.8 V to 3.3 V. |
| SDA | I2C bus data line - tolerates 5 V. |
| SCL | I2C bus clock line - tolerates 5V. |
| GND | System ground. |
| 3.3V | Supply voltage from 1.8 V to 3.3 V. |
| SCK | SPI bus clock line - operates with voltage up to 3.3 V. |
| SDO | SPI bus data line - operates up to 3.3V. |
| SDI | SPI bus data line - operates with a voltage up to 3.3 V. |
| CS | Chip Select - SPI bus device selection, activated by a low state - operates with a voltage up to 3.3 V. |
Specification for humidity, temperature and pressure sensor BME280
- Supply voltage: from 1.8 V to 3.3 V
- Communication: I2C or SPI
- I2C bus lines tolerate a voltage of 5 V
- Humidity:
- Measuring range: 0 %Rh to 100 %Rh
- Accuracy: 3 % for the range from 20 %Rh to 80 %Rh
- Temperature:
- Measuring range: from - 40 °C to 85 °C
- Accuracy: + / - 1 °C
- Pressure:
- Measuring range: from 30,000 Pa to 110,000 Pa
- Accuracy: 100 Pa
- Connectors: holes for soldering goldpin connectors, 2.54 mm pitch (not supplied, to be purchased separately)
- Board dimensions: 20 x 13 mm
Useful links |
