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.
BME280
4.2. Technical details
| Supply Voltage | 1.8 - 5V DC |
| Interface | I2C (up to 3.4MHz), SPI (up to 10 MHz) |
| Operational Range | Temperature: -40 to +85°C Humidity: 0-100% Pressure: 300-1100 hPa |
| Resolution | Temperature: 0.01°C Humidity: 0.008% Pressure: 0.18Pa |
| Accuracy | Temperature: +-1°C Humidity: +-3% Pressure: +-1Pa |
| I2C address | SDO LOW ：0x76 SDO HIGH：0x77 |
4.3. Data sheet
4.4. Where to buy?
Updated almost 5 years ago