Planning a game of Hacker Jeopardy at your next meetup? You’re going to want some proper buzzers to complete the experience, but why buy when you can build? [Flute Systems] has released an open source ...

The Pressure Piano is a three-key piano consisting of the notes G, A, and B that play off of a buzzer when activated. Each key is made of Velostat, aluminum foil, and two jumper wires. While making ...