Jack diagram trrs wiring headphone audio plug headphones microphone phone volume pins third party connector hack control do connect 5m Wiring headphone pinout trs plug xlr arduino tip pedal soldering circuitbasics input adapter How to hack a headphone jack
GitHub - NickDombroski/Arduino-MIDI-Foot-Controller-and-Expression-Pedal
GitHub - NickDombroski/Arduino-MIDI-Foot-Controller-and-Expression-Pedal
How to Hack a Headphone Jack