Introduction:
BMP280 is a digital Barometric pressure and Altitude sensor that is used to measure the atmospheric pressure and altitude of any place. It is very small and feasible which makes it easier to use it in battery-powered devices like mobile phones, GPS-based smartwatches, and weather stations. It is based on the piezo-resistive pressure sensor technology due to which it offers higher accuracy, linearity, stability, and EMC robustness. In order to achieve higher accuracy, it uses a temperature sensor that is present inside the BMP180 sensor
Connections:
- The VCC pin is used to connect 5V.
- The GND pin is used to connect GND.
- The SCL pin is a serial clock pin. You have to connect this pin to the SCL pin of Arduino UNO.
- The SDA pin is a serial data pin. You have to connect this pin to the SDA pin of the Arduino UNO
- The CSB pin is a chip select pin. You have to connect this pin to the GND.
- The SDO pin is a Serial Data Out pin. You have to connect this pin to 5V.
Features:
- The operating voltage is 1.7-3.6V DC.
- The current consumption is 3.4uA.
- The operating range for pressure is 300-1100hPa.
- The operating range for temperature is -40°C – 80°C.
- The accuracy for absolute pressure is ±1hPa.
- The accuracy for relative pressure is ±0.12hPa
- You can interface it using I2C and SPI.
Applications:
- Mobile phones
- GPS
- Outdoor equipments