This is a BMP-180 based digital barometric pressure sensor module and is functional compatible with older BMP-085 digital pressure sensor with less power consumption smaller in size and more accurate.
BMP180 combines barometric pressure, temperature and altitude. The I2C allows easy interface with any microcontroller. On board 3.3V LDO regulator makes this board fully 5V supply compatible. BMP-180 can measure pressure range from 300 to 1100hPa (+9000m to -500m relating to sea level) with an accuracy down to 0.02hPa (0.17m) in advance resolution mode. BMP-180 is an improved replacement for BMP-085 sensor. BMP-180 uses piezo-resistive technology for high accuracy, linearity, EMC robustness and stability for a longer period of time.
I2C for easy digital Interface
5V Regulator on board
Temperature measurement sensor included
Ultra low power consumption
Low noise measurements
Enhancement of GPS navigation (dead-reckoning, slope detection, etc.)
In- and out-door navigation
Leisure and sports
Vertical velocity indication (rise/sink speed)
Tutorial on BMP180 and Arduino uno r3