The project was originally inspired by a friend wanting to make a "sexting themed" costume, with a scrolling LED display of live texts sent from people at the party. We found a $13 LED belt buckle online, which looked cool, but only had a few buttons to manually enter in messages. A couple wires and lines of arduino code later, we were able to automate entry of messages.
We then added a host shield and wrote a small Android app to send txt messages on to the arduino.
Step 1: Required Parts and Code
--Android Phone (2.3.3+)
--Scrolling LED Belt Buckle ($13 at writing!)
--USB Host Shield (SparkFun one used here)
--Microbridge Arduino Host Shield to Android Library (Adb)
--Demo arduino code for writing to the LED display and receiving SMS text messages via the USB connection, and Eclipse android project to pass SMS messages to arduino.