BMP280

The BMP280 is a Bosch barometric pressure and temperature sensor breakout board supporting both I2C and SPI interfaces. Next-generation upgrade to the BMP085/BMP180/BMP183, with ±1 hPa pressure accuracy and ±1.0°C temperature accuracy. Can also function as an altimeter with ±1 metre accuracy. Ideal for weather sensing, indoor/outdoor navigation, and IoT projects.

Note: May be supplied as BMP280 or HW-611 variant — both have identical functionality.

Specifications:

• Operating Voltage: 1.71V – 3.6V (typically 3.3V)
• Operating Temperature: -40 to +85°C
• Operating Pressure: 300 – 1100 hPa
• Pressure Accuracy: ±1 hPa absolute
• Temperature Accuracy: ±1.0°C
• Altitude Resolution: ±1 metre
• Peak Current: 1.12mA
• Interface: I2C or SPI

Applications:

• Weather forecasting and monitoring
• GPS navigation enhancement (dead-reckoning, slope detection)
• Indoor navigation (floor and elevator detection)
• Vertical velocity indication
• Health care (spirometry)