A friend of mine wanted to know if/how a cheap LED clock like this could be built:
I paid $15 for one of those LED badges, so that size would be OK (.5 x 2 inches or so). Yet when I go look for LED controlelrs, board, and sheilds, it gets crazy expensive to get enough parts to build one. I guess that means I'm going in the wrong direction. Thoughts, ideas, or advice please?
Hour and minutes are fine, so 4 digits would be fine for what I'm interested in building.