BMP180 Pressure Sensor
🌡️ BMP180 Digital Barometric Pressure Sensor Module
Measure Altitude, Pressure & Temperature – I2C Interface
The BMP180 is a compact, low-power digital barometric pressure sensor designed for accurate measurement of atmospheric pressure, altitude, and temperature. Based on Bosch Sensortec’s proven piezo-resistive technology, it communicates via the I2C interface and is widely compatible with Arduino, ESP32, Raspberry Pi, and more.
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Operating Voltage | 1.8V to 3.6V (typically powered with 3.3V or 5V via onboard regulator) |
| Interface | I2C (Address: 0x77) |
| Pressure Range | 300 to 1100 hPa (equivalent to 9000 m to -500 m above sea level) |
| Altitude Accuracy | ~±1 meter |
| Temperature Range | -40°C to +85°C |
| Temperature Accuracy | ±1.0°C |
| Pressure Accuracy | ±1.0 hPa |
| Module Dimensions | Approx. 21mm x 18mm |
✅ Features
⛰️ Measure barometric pressure and calculate altitude
🌡️ Integrated temperature sensor for compensation
📶 I2C communication – easy connection with just 4 wires
🔌 Fully compatible with Arduino, ESP8266, ESP32, Raspberry Pi
🧠 Supported by Adafruit BMP180 library for quick coding
🧪 Typical Arduino Wiring
| BMP180 Pin | Arduino Pin |
|---|---|
| VCC | 3.3V or 5V |
| GND | GND |
| SDA | A4 |
| SCL | A5 |
Use Wire.h and Adafruit_BMP085.h libraries (BMP180 is backward compatible with BMP085)
📱 Applications
Altimeters for drones, balloons, and weather stations
Indoor navigation & elevation tracking
Environmental monitoring & weather forecasting
Smart watches and wearable electronics