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 Hack a Headphone Jack
connector - Repair wiring of ATR6550 Condensor Microphone with 3.5mm Jack - Electrical Engineering Stack Exchange
How to make DIY 3.5mm line to mic Aux cable to record audio from MP3 device to phone/PC. I tried soldering 2 jacks GND to GND and left to mic with low
Microphone Connections: A Short Tutorial Jon Wahrenberger
AeroElectric Connection - Aircraft Microphone Jack Wiring