LED Clock Uses Micro QR Codes To Show The Time
Amusant, il faudrait une version montre. Ca me rappel les horloge binaires

As you probably know, we love our clocks here at Hackaday. Odd display technologies are always interesting to see, as are unusual encoding techniques such as binary, ternary or higher-radix number systems. Still, clocks are typically meant to be human-readable, even if their encoding might be a little eccentric.
via Hackaday : lire l’article source