Strictly speaking, a Theremin uses a pair of antennae that act as capacitors in a specific R/C circuit. Looking at ...

Arduino has been used to control a stepper motor driver a MIDI interface, scanner parts and basic keyboard to great effect, check out the video below to learn more. Watch this video on YouTube.

An Arduino with Firmata allows the device to controlled easily from any host computer. A detailed writeup in PDF form is on the Hackday.io project page.

YouTuber Alex Coover, aka Glacial Geyser, has build an awesome Arduino-powered MIDI controller to help with his budding music career. Here's a demo.

Is it a keyboard? Is it a guitar? It’s the ARKeytar, an Arduino-based MIDI controller shaped as a maple wood keytar. Thanks to the Arduino team for highlighting this one, the work of Andrea Gregorini ...

Maker and 3D printing enthusiast James Bruton has created a new project in the form of a barcode scanner MIDI guitar. Using parts from old arcade machines, a little Arduino programming, and an ...

DIY musical instruments are their own thing entirely, but if you're looking for a place to start, Adafruit has a guide to building your own MIDI controller using an Arduino. The OONTZ uses a 3D ...

Is it a keyboard? Is it a guitar? It's the ARKeytar, an Arduino-based MIDI controller shaped as a maple wood keytar. Thanks to the Arduino team for highlighting this one, the work of Andrea Gregorini ...