Beat Bars EX2M Exp. Pedal -> MIDI USB Adapter | MUSIC STORE professional
PaintAudio MIDI Captain Foot Controller (GOLD)
Standalone MIDI expression pedal
Amazon.co.jp: Single Foot Switch Foot Pedal, Single USB Foot Switch MIDI Controller ABS Material Easy to Use Factory Zoom Test Play : Musical Instruments
Multifunctional Customized Foot Pedal USB Foot Switch MIDI Cotroller Action Pedal for Image Acquisition Music Control - Walmart.com
GitHub - SteveObert/KatanaUSB_Midi_controller: This is a Teensy based USB MIDI foot controller for Katana amps