Time is very important factor in our life. This is why our home is full of clock to keep track of time. Clocks, watches are different and unique design. But when you hear a clock you start imagining a mechanical clock with arrows indicating time in a circular scale. But as you know mechanical parts are used to wear out. So why not to make similar clock without moving parts. This is what evilmadscientist guys have done.
They used 72 specially arranged LED’s that give a shadow’s representing an arrows pointing to numbers on a dial. They used time chip DS3231 for accurate time count. Whole process is controlled by Arduino like hardware – of course specially shaped PCB. You can build it yourself or you can get nice kit for very reasonable price.
Also check out the video how this clock works in reality.