Hey, I'm working on a project where I'm trying to display about 30 different SMS messages on to 30 different LCD's. I've got a modem shield -> Arduino -> single LCD receiving,parsing and displaying fine. My problem is that I'm not sure how I distribute 30 different messages (1 message at a time) to 30 different LCD's without buying multiple modems. I've read that it's possible to hook up at least 8 LCD's to a single arduino using I2C. Would it be possible to use these serial enabled lcd's in conjunction with i2c port expanders to increase the number of LCD's I can attach to a single Arduino to 30?
And as a second option, what would be the best way to communicate data between arduinos to create a network of 30 lcd's where each lcd is addressable? Should I daisy chain arduinos together? Should I use Xbees?
Third, how many LCD's could I hook up to this guy? http://www.sparkfun.com/products/9949
Thanks guys, I really appreciate the help. My deadline is steadily approaching.