MAKE subscriber Dave Vondle wrote us about his LED Glass Block LED Wall Display. Check out the link for a lot more information about the build, including the schematics and source code. Thanks Dave!
I created an interactive LED pixel display out of the glass block wall in the front of my building over the past year or so. The system turns each glass brick into a pixel and uses Flash, Arduino, and BlinkM modules. I happen to work at IDEO so I put it on the IDEO labs blog. I documented it pretty heavily and opened all of the code up as well. Unfortunately I recently had to take the array down, and am hoping someone who reads about it wants to give it a new home!