So I used the GLCD library v3 and wired up a 128 x 64 AZ Displays AGM1264F. I'm pretty new with the auduino so I don't know what's normal or not. Anyhoo, I wired up the LCD and ran the demo code and it worked great, but there is a slight high pitched whine noise coming from the LCD. I checked the wires and didnt see any shorts or anything. Is this normal???