8x15 LED Display Matrix
I’ve long been interested in how those scrolling LED signs work. There are snippets here and there throughout the internet but not everything that one really needs to achieve a project like this. I have actually seen this project all the way through, from breadboarding, to etching my own controller boards and assembling the prototype into a nice package. I have learned quite a bit, especially about using the timer interrupts of the AVR microcontrollers, using shift registers, and especially about selecting the right hardware for the job.
Take a look at the in-depth tutorial I have posted at instructables:
http://www.instructables.com/id/LED-matrix-using-shift-registers/