[Deadbird] wanted to recreate some guitar pedal effects that he heard on a music video. The thing is, you can end up spending a bundle on hardware unless you’re crafty like he was. He grabbed a Whammy 4 pedal, but decided to forego using a $125 MIDI controller and sourced an Arduino to perform MIDI-based alterations instead.
The Whammy 4 was chosen for its ability to perform the sound processing he desired, but also because it can be MIDI controller. By hooking up the Arduino to that port (as seen in the diagram above) he’s able to program changes that would be difficult or impossible with just the pedal. For instance, [Deadbird] illustrates a command which jumps from the lowest to highest setting of an effect without hitting any of the values in the middle. With that under his belt he goes about programming loops of changes with delays in between them. The best part is, you’re only limited by your ability to craft the MIDI commands as Arduino code.
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