You are reading a single comment by @Gordon and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
It's great that you were able to check at least. So the headphone cable you have has 4 wires? GND, left, right, and mic?
Hmm, do you have different resistor values? Maybe you could try removing the Pico for now and just adding a low value (around 75 Ohm?) resistor between GND and the mic wire? It might be the Mac is looking for a more hefty resistance across the line?