How to supply a microphone with plug-in-power via TRS or TRRS plug?
Did you already try with 3.5mm TRRS Audio Jack Breakout?
It's simple, there are only 4 pins
SLEEVE = Ground -&gt; Ground
RING2 = Typically Microphone or video channel -&gt; A0
RING1 = Audio RIGHT channel -&gt; A1
TIP = Audio LEFT channel -&gt; A2