4. BME280 Temperature, Humidity and Pressure Sensor

4. BME280 Temperature, Humidity and Pressure Sensor

4.1. Description

BME280 is an environmental sensor with temperature, barometric pressure, and humidity. This sensor is great for all sorts of weather/environmental sensing and can even be used in both I2C and SPI!

This precision sensor is the best low-cost sensing solution for measuring humidity with ±3% accuracy, barometric pressure with ±1 hPa absolute accuracy, and temperature with ±1.0°C accuracy.

Because pressure changes with altitude and the pressure measurements are so good, you can also use it as an altimeter with ±1 meter or better accuracy!

For simple easy wiring use I2C. If you want to connect a bunch of sensors without worrying about I2C address collisions, go with SPI.

601

BME280

4.2. Technical details

Supply Voltage1.8 - 5V DC
InterfaceI2C (up to 3.4MHz), SPI (up to 10 MHz)
Operational RangeTemperature: -40 to +85°C
Humidity: 0-100%
Pressure: 300-1100 hPa
ResolutionTemperature: 0.01°C
Humidity: 0.008%
Pressure: 0.18Pa
AccuracyTemperature: +-1°C
Humidity: +-3%
Pressure: +-1Pa
I2C addressSDO LOW :0x76
SDO HIGH:0x77

4.3. Data sheet

4.4. Where to buy?