DIY Expression Controller

This is a simple MIDI controller I built to add expressive control to multi-sampled instruments, specifically Kontakt orchestral libraries. It's design is a blatant ripoff of the beautiful Nuances controller by Pierre Caillet (https://nuancescontroller.fr/), which was out of stock at the time of this build.

My decidedly less beautiful version runs off an Arduino Pro Micro (chosen for its class-compliant USB MIDI compatibility) and features three 60mm faders, an OLED display, and a button for secondary functions all housed in a 3D-printed case. Current fader values are displayed on the screen along with their MIDI CC value, which can be changed per fader by holding the secondary function button and moving the desired controller. The MIDI channel can't be altered on the device itself, but can be set inside the Arduino sketch.

Two years later (as of Dec 2024), this little guy continues to be a useful tool for programming orchestral instruments, despite its prototypical construction.