Here’s a really cool DIY that shows you how to make a cool LED dot-matrix display. I’ve seen plenty of these in the past but they seemed to always be in style.
This is a simple HOW-TO make your own personalised LED Dot-Matrix display. I will be adding the complete program with an explaination to light the LEDs with. It’s also rather hackable, you can change it to suit yourself.
via instructables (via bed blo