The BME280 module measures temperature, humidity and barometric pressure in one tiny sensor. From pressure it can also calculate altitude. It communicates over I2C or SPI and is a favourite for weather stations and IoT environmental monitoring with ESP32 and Arduino.
| Sensor | Bosch BME280 |
|---|---|
| Temperature | -40 to +85 °C (±1 °C) |
| Humidity | 0 – 100% RH (±3%) |
| Pressure | 300 – 1100 hPa (±1 hPa) |
| Interface | I2C (0x76 / 0x77) and SPI |
| Supply voltage | 3.3V (5V on versions with regulator) |
What is the operating voltage?
3.3V (5V on versions with regulator).
BME280 vs BMP280?
BME280 also measures humidity; BMP280 measures only temperature and pressure.
My sensor is not detected – why?
Run an I2C scanner; the address is 0x76 or 0x77.
Can I buy the BME280 Temperature, Humidity & Barometric Pressure Sensor Module in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
