Aaron_dyer:
?How do I know which address to use as well? I have seen a lot of 0x27 stuff
I was using the LiquidCrystal_I2C lcd( 0x27, 20, 4); to initiate the LCD...
I noticed you also posted in this thread:http://arduino.cc/forum/index.php/topic,119502.15.html
So by now you have already found and used the I2C-scanner found here:http://arduino.cc/playground/Main/I2cScanner
This is the adress you need to put in the declaration.