The BME280 is a 3-in-1 environmental sensor that combines humidity, barometric pressure, and temperature measurement in a single module. It features both I2C and SPI digital interfaces, offering flexible integration options.

It is an upgrade to BMP085/BMP180/BMP183 sensors, providing low altitude noise of 0.25 m and fast response time. The module exposes both I2C and SPI interfaces over 6 pins (including GND and VCC), allowing you to choose your preferred communication method.

For simple and easy wiring, I2C is recommended. If you need to connect multiple sensors without I2C address conflicts, SPI is a better choice.

Features:

I2C interface: Up to 3.4 MHz
SPI interface: Up to 10 MHz
Supply Voltage: 1.8–5V DC

Operating Range:

Temperature: -40°C to +85°C
Humidity: 0% – 100% RH
Pressure: 300 – 1100 hPa

Resolution:

Temperature: 0.01°C
Humidity: 0.008% RH
Pressure: 0.18 Pa

Accuracy:

Temperature: ±1°C
Humidity: ±3% RH
Pressure: ±1 Pa

PCB Size: 1.52 x 1.20 cm (0.60 x 0.47 in)

BME280 Pressure, Temperature & Humidity Sensor (I2C/SPI)

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