Build an Arduino-powered Chess Clock
Thanks to the popular mini-series "The Queen's Gambit", the game of chess has increased in popularity somewhat - and for good reason. Playing chess helps stimulate mental activity, helps you meet people from around the world, is cheap, and is fun.
With that in mind, you may find yourself playing against others over-the-board and want a chess clock for timing purposes, and this Arduino-powered device by Instructables user Anders644PI fits the bill. They've harness an Arduino Nano-compatible board, LCD and associated hardware to build their own neat chess clock.
The project is taken to completion with a 3D-printer player change button, and a laser-cut enclosure - however you can take the circuit and sketch and run with your own finished version. To get started, check out the clock's instructable page.