Building digital clocks may not be the sexiest of DIY projects, but it’s still pretty fun. Try this version that utilizes the ESP8266 family of devices which makes incorporating the Network Time Protocol simple.
Just when you thought there were no more cool electronic clocks to build, this Arduino-controlled version showed up.
This unique timekeeper will have you seeing stars ... even the same skies the Spanish missionaries observed back in the 1600s!
The clock is made of a collection of counters. Counters made by a chain of n flip-flops result in binary ripple counters capable of dividing by 2n. A four flip-flop counter naturally counts from 0 to 15. To make it count from 0 to 9, it needs some steering logic on the flip-flop toggle inputs.
