A 3D printed clock driven by a single stepper motor using gears to separate hours, minutes and seconds.
A digital clock completely built from scratch without any coding or microcontroller. Just by using only 74xx and 40xx series digital IC.
RGB LEDs triangular/hexagonal pixels matrix.
This is a 7 Segments counter with arduino
This project uses an ultrasonic sensor to allow a "hand wave" (no touch!) to trigger a series of LED's and the Happy Birthday song twice
Remember the days when you would sit listening to WWV time signals on your shortwave radio (tick, tick, tick…At the tone, the time will be…)