Schemat kabla USB - Peryferia i akcesoria - dobreprogramy - forum
Soldering the cable with a 3.5mm mini jack - elektroda.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