Our public hosting of the Junkyard Jumbotron has been shut down. Please download the code to your own, or check out the forks on github if you are interested in new features like video support.
The Junkyard Jumbotron lets you take a bunch of random displays and instantly stitch them together into a large, virtual display, simply by taking a photograph of them. It works with laptops, smartphones, tablets --- anything that runs a web browser. It also highlights a new way of connecting a large number of heterogenous devices to each other in the field, on an ad-hoc basis.