I am currently experimenting with the arduino uno board, I had the board set up with the mono low res tv monitor sketch,
but I have dismantled that project, I am working on a club pub persons in out hand held counters / totaliser with tx and rx links to a master display ,
it will talk to up to five hand helds at moment, and keep a track of how many persons in and out each entrance, with the total on main base station.
I was working on this at the beging of the year (2013) but have been side track on to over things, hope to have working approx july/aug
( the problem is you order items, which take a long time to come in and in the mean time you start some thing else !!!1 ),
Picture of the inside
Picture of the sketch
Pic project Dev board