Chosen Solution

Hi Everyone, im trying to build a laser microphone by wiring the microphone and ground pin of a 3.5mm replacement jack to a photoresistor. Im not sure which pin is which

and ive tried all of them, but it never seems to work. So firstly, which are the ground and microphone pin on my TRRS 3.5mm replacement jack And secondly, does anyone know why it wouldnt work?

Hi @efeooo I don’t own this image but i found it online for you and I hope it helps

This diagram should show you what is what As for why it isn’t working,I would make sure you have a good solder joint and make sure they are all soldered together before testing as it may have something to do with the device not recognising it as a device if all pins aren’t being used but that’s just a guess and my answer is more based on the image Hope this helps Thanks:-)