BMP280 Pressure Sensor

The BMP280 Pressure Sensor by Bosch Sensortec is an upgraded version of the BMP180, offering enhanced accuracy, low power consumption, and faster response. It’s designed for weather stations, altimeters, and IoT-based environmental monitoring.

Using I2C or SPI communication, the BMP280 easily connects with Arduino, ESP8266, or Raspberry Pi boards to measure pressure, altitude, and temperature with high precision.

Technical Specifications

• Model: BMP280

• Manufacturer: Bosch Sensortec

• Supply Voltage: 1.8V – 3.6V (typical 3.3V)

• Interface: I2C (up to 3.4 MHz) / SPI (up to 10 MHz)

• Pressure Range: 300 – 1100 hPa

• Temperature Range: -40°C to +85°C

• Resolution: 0.16 Pa (pressure), 0.01°C (temperature)

• Accuracy: ±1 hPa (pressure), ±1°C (temperature)

• Dimensions: 2.5mm × 2.5mm × 0.93mm

Key Features

✅ High-accuracy barometric and temperature measurement
✅ Supports I2C and SPI communication interfaces
✅ Low noise and low power consumption — ideal for battery-powered devices
✅ Compact and easy to integrate with Arduino and ESP boards
✅ Compatible with libraries like Adafruit BMP280 for fast setup

Applications

• 🌤️ Weather Stations – measure atmospheric pressure and predict weather trends

• ✈️ Altitude Tracking – detect elevation changes in drones and aircraft

• 📱 IoT Devices – environmental data logging and automation systems

• 🏠 Smart Home Systems – air pressure and temperature monitoring

• 🎓 STEM & Research Projects – study atmospheric variations

Working Principle

The BMP280 sensor measures barometric pressure using a piezo-resistive MEMS sensor. When air pressure changes, the sensor’s resistance changes, which is then converted to a digital signal. The device calculates altitude using the standard atmosphere equation, making it ideal for altitude-sensitive applications like drones and GPS correction.

For improved results, pair the BMP280 with an Arduino board from ElectroWay Arduino Collection and log real-time data to a display or SD card.

Precautions

⚠️ Avoid touching the sensing hole to prevent contamination.
⚠️ Ensure proper voltage levels — use a 3.3V logic interface or a level shifter if using 5V boards.
⚠️ Keep the sensor away from heat sources for accurate readings.

YouTube Tutorial

🎥 Watch: How to Connect BMP280 Pressure Sensor with Arduino

Internal Links

• Arduino Boards

• Sensors Modules

• ESP8266 WiFi Modules

• OLED Display 0.96 inch I2C

Summary

The BMP280 Pressure Sensor is a reliable and efficient module for precise barometric pressure, altitude, and temperature measurement. Whether you’re building a DIY weather station, an IoT environmental logger, or a drone altitude system, the BMP280 offers consistent performance and easy Arduino integration.