The circuit itself is quite simple, especially because it uses an Arduino. You could accomplish the same thing with a 555, but that’s going to complicate the circuit sculpture part of things a bit.

For those just starting out, [陳亮] put together a handy guide to building the core of an Arduino-based watch. The writeup starts at the beginning, going over the basic hardware requirements for ...

Luckily, Nortje knows a little something about wiring together a faux Nintendo using Arduino.So he set up an old monitor into a Game Boy-like housing with an oversized D-Pad and two buttons.