Make your own MIDI keyboard matrix (or just buy one?)
If you’ve ever seen a MIDI pad with dozens of light-up buttons producing electronic music, you may have considered building one using an Arduino. As shown in GreatScott!’s latest write-up, you can indeed create your own Novation Launchpad-like device using a Nano for control, but the real question is should you?
In the video below, GreatScott! shares how made a 6×6 pad, using a 3D-printed body and buttons arranged in a matrix to save I/O, along with WS2812B LEDs. He also goes over the MIDI protocol, which he was able to implement using loopMIDI and Hairless MIDI to serial bridge for Arduino interface.
While the DIY option may or may not be right for you, the concepts presented could be applied to a wide range of electronic musical interface projects.
In this episode of DIY or Buy I will be showing you how I created my own Launchpad. That means I will show you how I combined a design idea with 3D prints, WS2812 LEDs, tactile switches and an Arduino to create a proper MIDI instrument. While building I will also tell you a bit about a keyboard matrix and in the end determine what advantages the DIY Launchpad offers.
[original story: Arduino Blog]