Earphone Jack Pj301 3.5mm Female Audio Connector 3 Pin DIP Mono Channel Headphone Jack Socket - China Earphone Socket, Audio Connector | Made-in-China.com
Making a [4-Pole TRRS to 3.5mm Stereo & Mic Adapter (Male to 2x Female)] from an iphone headphone split… | Earphones wire, Electronic schematics, Headphone splitter
How to hook up a 3.5mm audio jack to a circuit to read in analog input - #22 by JustinLorenz222 - General Electronics - Arduino Forum