This is a library for the Adafruit BMP085/BMP180 Barometric Pressure + Temp sensor Designed specifically to work with the Adafruit BMP085 or BMP180 Breakout ----> http://www.adafruit.com/products/391 ----> http://www.adafruit.com/products/1603 These displays use I2C to communicate, 2 pins are required to interface Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Check out the links above for our tutorials and wiring diagrams Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, all text above must be included in any redistribution To download. click the DOWNLOAD ZIP button, rename the uncompressed folder Adafruit_BMP085. Check that the Adafruit_BMP085 folder contains Adafruit_BMP085.cpp and Adafruit_BMP085.h Place the Adafruit_BMP085 library folder your arduinosketchfolder/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE. We also have a great tutorial on Arduino library installation at: http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use