Build a decorative, programmable LED display pretty enough to hang on a wall!
When I was young, my family had a lightbox as part of our holiday decorations. No one could remember where it came from, probably a garage sale or something. It was extremely simple — just six old-fashioned “blinker” Christmas tree lights behind a pane of textured acrylic that turned each light into a diamond pattern. The lights blinked on and off at random intervals. Each light was always the same color and there were only six of them, but something about it was… hypnotic.
One year it fell to the floor and broke. No big loss, everyone said, yet I’d never seen another one like it. Since then, I’ve always wanted to find another one. Years later, when I saw Adafruit’s strings of 12mm LED pixels, I knew exactly what I wanted to make…
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