In modern IoT, environmental sensing and consumer electronics, accurate measurement of pressure and temperature is essential for climate sensing, altitude estimation and smart energy control. The BMP280 developed by Bosch Sensortec is a compact, low-power, high-resolution air pressure and temperature sensor. It is widely used in wearable devices, drones, altimeters and smart home systems.
1. What is BMP280?

The BMP280 is a digital pressure sensor that uses advanced MEMS technology and integrates air pressure and ambient temperature sensing functions. It is designed for mobile and IoT applications, supports I²C and SPI communication interfaces, and is easy to integrate into embedded systems.