I built a pedal that turns my whammy pedal into an arpeggiator by sending MIDI to it! Would anyone want one if I refined it and built more? More info in comments... :
Molten MIDI 5™ - Programmable Digitech Whammy 5 Controller by Molten Voltage | Reverb
GitHub - WinZs/Arduino-Midi-Controller-for-Digitech-Whammy-5-: Midi Controller with 4 footswitch for instant pedal mode change for Digitech Whammy 5
Sending Program Change to DigiTech Whammy? - Patching - Axoloti Community