Dubbed the Pi Day Clock, it shows the hours, minutes and seconds and is based on an Arduino Uno R3 along with a Run Time Clock unit.
The project is highlighted on the Arduino Project Hub and is the work of one LAGSILVA. You can find pin layouts, schematics and code guides on the blog. Excellent
The time shown above is 15:02:37, and you can view the clock in action below:
It seems it was created to mark Pi Day, an annual celebration of the mathematical constant which falls on March 14, of course. Get it? (3, 1, and 4 are the first digits of π…)
— Arduino (@arduino) March 14, 2020
[Via twitter (Arduino)]