“We’re fans of the Adafruit Feather M4 Express microcontroller for its speed, good mix of features, and easy programming with Arduino tools. So, naturally, we thought: should we make a guitar pedal with it? Of course we should make a guitar pedal with it. And so we did. There were some problems along the way, but it worked out pretty well in the end. In this post, I’ll walk though how we did it.
The first thing to do was to choose an audio codec. The Teensy Audio Adaptor Board, with its SGTL5000 chip and supporting components already installed, seemed like a good starting point.”