In this project, an analogue wall clock (train station clock) is fitted with 60 LEDs that light up to simulate the movement of a seconds hand around the clock face. To keep to the spirit of this project you should try hard and resist the temptation to use a microcontroller; just rely on good-ol’ 74xx TTL logic to build a stand-alone clock. For those with less willpower the circle of LEDs can be microcontroller or PC controlled, this allows you to be a bit more creative with lighting sequences and special effects.