Project uses nice way to tell time. It uses a classic Pong game on dot matrix display to count time. There are two players that can win or loose. One looses every minute while second every hour. So the score of each player reflect current time.
Project is built around Arduino that reads time from DS1307 RTC chip. Clock uses pair of large 2416 displays based on HT1632C controller. Clock code can be found at https://code.google.com/p/pong-clock/.