Barometric Pressure Sensor Unit
This module is developed on the sensor from Bosch BMP180, which is a high-precision and low-power digital barometer. The BMP180 offers a pressure measuring range of 300 to 1100 hPa with an accuracy down to 0.02 hPa in advanced resolution mode. It's based on piezo-resistive technology for high accuracy, ruggedness and long term stability. These come factory-calibrated, with the calibration coefficients already stored in ROM. What makes this sensor great is that it is nearly identical to its former rev - the BMP085.
This breadboard-friendly board breaks out every pin to a 6-pin 0.1"(2.54mm) pitch header. VCC can be from 1.8V to 3.6V and is 5V tolerant; we typically run it on a clean, regulated 3.3V supply. The analog and digital supplies (VDDD and VDDA) are tied to a single header pin, but are separately decoupled. It connects to a microcontroller via I²C bus (also known as TWI, or on the Arduino, the "Wire" library).
* Digital two wire (I²C, TWI, "Wire") interface
* Wide barometric pressure range
* Flexible supply voltage range (1.8V to 3.6V)
* Ultra-low power consumption
* Low noise measurements
* Includes temperature sensor
* Low-profile with a small footprint