LED Clock Looks Cool AND Tells Time

LED Arduino Clock

Clocks have taken many forms of the years, starting with shadow clocks and sundials in Egypt around 3500 BC. Obviously, these could only tell the time while the sun was out. Water Clocks followed which could track time in the dark. Water Clocks are basically a bowl with a hole in the bottom. This bowl was set in a container filled with water. The water entered the bowl at a consistent rate and graduations on the inside of the bowl showed how much time had passed.

Mechanical clocks followed, as did quartz and the atomic clock. We have now entered … Read the rest

from Hackaday http://ift.tt/1nYPg06
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