I had a similar situation where I was wiring an old Western Electric 302 model which has 3 wires:
Speaker wire (white to dial)
Mic wire (black to dial)
Shared wire, used in speaker and mic (R to induction coil)
I tried wiring to the HP with tip...
Quick Update. It was the SD Card. After putting in a better one it's saving the audio.
One issue I have now is that the file i just wrote doesn't actually write the bytes to the card until I start a new recording. It's like whatever file is...
First time post and first time getting involved with any type of project like this. Super excited.
So like a few folks on here, I'm trying to build out an Audio Guest Book from that wonderful YouTube tutorial using the Teensy. I've...