GitHub - WinZs/Arduino-Midi-Controller-for-Digitech-Whammy-5-: Midi Controller with 4 footswitch for instant pedal mode change for Digitech Whammy 5
Gumtown's DIY Arduino midi note foot pedal
Simple To Build Programmable Foot Switches | Hackaday
Code and circuit for a six-function Arduino-based USB footswitch :: Sacha Chua
An Arduino-powered automatic guitar footswitch | Arduino Blog
USB Midi Foot Controller Help - Audio - Arduino Forum
Arduino-based pedal ([pduino]) | Guitar Extended
How To Use Foot Pedal With Arduino |PCB FROM PCBWAY COM - YouTube
New to Arduino, building an 8 button midi pedal. Any help appreciated ! - Project Guidance - Arduino Forum
Pedalino: A smart, open source wireless MIDI foot controller for guitarists and more « Adafruit Industries – Makers, hackers, artists, designers and engineers!