In the simplest terms, a button is a finger-activated mechanism for completing an electric circuit. In many ways, the root of the button lies in musical instruments and firearms. Although one is ...

[Glen]’s project sounds perfectly straightforward: have a big industrial-style push button act as a one-key USB keyboard. He could have hacked something together in any number of ways ...

[pros] has come up with a very elegant way of making lighted buttons (translated). Using a bunch of small push buttons harvested from old CD players, he rigged this unique way of mounting LEDs.