BMP180 Barometric Pressure/Temperature/Altitude Sensor Module – Arduino + LCD
Introducing the BMP180 barometric sensor It has a measuring range from 300 to 1100hPa with an accuracy down to 0.02 hPa. It can also measure altitude and temperature. The BMP180 barometric sensor communicates via I2C interface. This means that it communicates with the Arduino using just 2 pins.