This project illustrates a LAN using a web browser to control an Arduino-based stereo audio switch. In the design, a 5V DPDT relay is used along with an Ethernet-capable Arduino and a few 3.5mm stereo ...

We all know you can build a computer out of relays, and if you’re a regular reader of Hackaday, you’ve probably seen a few. Actually designing and fabricating a computer built around relays is another ...