Behringer FCB1010 foot pedal convert to USB power & incorporate MIDI Expression Quattro with single cable - Cantabile Community
Amazon.com: FORE MIDI to USB Interface MIDI Adapter with Input&Output Connecting with Keyboard/Synthesizer for Editing&Recording Track Work with Windows/Mac OS for Studio USB 2.0 Color Red - 6.5Ft : Musical Instruments
Behringer FCB1010 MIDI Foot Controller with 2 Expression Pedals & MIDI Function FCB1010
How to make a: Wireless, Battery Powered Behringer FCB 1010