The BMP280 Barometric Pressure Sensor Module (GY-BMP280-3.3 breakout board) is a digital pressure and temperature sensor built on the Bosch BMP280 chip, supporting both I2C and SPI communication at up to 10MHz, operating from 1.8V to 5V DC at just 1.12mA peak current, and rated for -40°C to 85°C operation. The bmp280 sensor measures atmospheric pressure with high resolution, and this pressure reading is the basis for both weather monitoring and altitude calculation in a single compact breakout compatible with Arduino and other microcontroller boards.
The barometric pressure sensor on this module reads ambient air pressure in hPa (hectopascals) — as altitude increases, atmospheric pressure decreases predictably, and the bmp pressure sensor uses this relationship through the international barometric formula to calculate altitude in metres from the pressure reading and a reference sea-level pressure value. Per the bmp280 datasheet, the I2C address defaults to 0x76 or 0x77 depending on the SDO pin state, and the Adafruit BMP280 Arduino library handles register configuration, calibration coefficient reading, and pressure-to-altitude conversion automatically. As an altitude sensor, accuracy depends on having an accurate local sea-level pressure reference — using a fixed default value introduces altitude error that varies with daily weather pressure changes.
The bmp sensor measures pressure and temperature only — it does not measure humidity, unlike its sibling chip the BME280. For weather station projects requiring humidity data, the BME280 variant is needed instead. Available from StemVolt, this BMP280 barometric pressure sensor module is ideal for engineers and makers developing weather monitoring, altitude measurement, and environmental sensing projects with accurate pressure and temperature data.
Related product:
- Checkout the BMP180 Digital Barometric Pressure Sensor Module
Features:
- I2C and SPI dual interface up to 10MHz for flexible wiring
- 1.8V to 5V wide voltage range suits 3.3V and 5V boards
- 1.12mA peak current suits battery-powered weather station builds
- -40°C to 85°C rating for outdoor and harsh environment deployment
- Adafruit BMP280 library handles calibration and altitude conversion automatically
Pin Diagram of BMP280 Sensor:
Technical specifications:
 Applications:
- BMP280 Module used for Arduino IoT weather station pressure logging
- College project uses bmp280 sensor for altitude measurement display build
- Drone uses barometric pressure sensor for altitude hold flight control
- Weather IoT uses bmp pressure sensor for pressure trend logging India
- Hiking gadget uses altitude sensor for elevation tracking display build
Package includes:
- 1 x BMP280 Barometric Pressure Sensor Module
Utkarsh Sharma –
Worth every rupee
Manish Rathi –
Reliable store product
Nidhi Khandelwal –
Received this BMP280 sensor with prompt delivery and secure packaging, readings were accurate and it worked perfectly for my science exhibition project.
Neha Soni –
Prompt delivery service
Sourabh Modi –
Expert guidance helped with setup, and the sensor delivered stable readings for altitude sensing and environmental monitoring applications
Kriti Agrawal –
Packed carefully
Ayush Vijay –
It provides accurate pressure, altitude, and temperature measurements, making it suitable for weather monitoring, science exhibitions, and embedded projects