Makers, hobbyists and electronics enthusiasts looking for a project to keep them busy ... acrylic cover to house the four large arcade buttons and Arduino board, LED display, speaker and lighting.

As if you already weren’t agonizing over whether or not you should build your own arcade ... project is about as easy as you’d expect: the buttons connect to the digital inputs on the Arduino ...

but the more unique part of the project is the choice to use arcade buttons as the instrument’s inputs. [Jeremy] tied eight of these buttons to an Arduino Uno to provide a full octave’s worth ...