Making a [4-Pole TRRS to 3.5mm Stereo & Mic Adapter (Male to 2x Female)] from an iphone headphone splitter jack?
The problem is how do I connect the microphone pins from the 3.5mm jack? That is how do I connect the two leads marked "?" (see the third picture for what I want to achieve.)
PS: I am not sure whether the microphone jack pinout is the same as drawn. Anybody can confirm whether this is right?