Let me first say that I have little programing experience. That being said, I would like to use an iPad to control an external device. My first thought is to have a UI of a series of buttons similar to a phone keypad that when pressed, send serial commands over the bluetooth interface to an external device. Can the forum advise as to where I might start this effort (software to create the UI and pass the commands thru the bluetooth port, etc) and what roadblocks lie ahead? Thanks in advance for your expertise.