The BMP180 is a high-precision digital sensor for measuring barometric pressure and temperature, providing accurate altitude data for weather monitoring and navigation projects. It supports both I²C and SPI communication, making it simple to interface with Arduino, Raspberry Pi, and other microcontrollers.
Technical Specifications
Core Specifications
Measurement range: 300 to 1100 hPa (–500 m to +9000 m altitude)
Absolute pressure accuracy: ±0.12 hPa
Temperature range: –40 °C to +85 °C
Operating voltage: 1.8 V to 3.6 V (module accepts 3.3 V to 5 V input)
Digital output: I²C up to 3.4 MHz or SPI
Typical current: 3 µA in ultra-low-power mode
Electrical & Physical
Onboard voltage regulator for 3.3 V–5 V compatibility
Standard 4-pin interface: VCC, GND, SDA, SCL
Compact size: approximately 21 mm × 18 mm × 2 mm
Environmental
Stable operation from –40 °C to +85 °C
Internal temperature compensation for consistent readings
Why Choose the BMP180
High accuracy enables altitude calculation within about one meter
Extremely low power consumption ideal for battery-powered projects
Wide library and code support for Arduino and other platforms
Critical Uses
Weather stations and barometric pressure monitoring
GPS enhancement for precise elevation data
Drones, balloons, and portable altimeters
HVAC and indoor climate control systems
Pro Tips
Calibrate at a known reference altitude for maximum precision
Keep the sensing port clear of dust and moisture
Provide airflow around the sensor for fastest response
Package Includes
1 × BMP180 Digital Barometric Pressure Sensor Module