I just recently got hooked on my Arduino. Quick question. I would like to build a project that requires the BMP180 pressure sensor, the BN0055 orientation chip and the simple LCD display bar. I want to use the simplified LCD setup that minimizes the number of wires coming from the LCD display. All three of these devices use the A4 A5 slots on the Arduino.I noticed that my Arduino is an R3 version and has SCL and SDA slots next to the AREF position. Can I use these devices together on the one Arduino board ?