Next up we’re going to take that phone apart! But first, remember to refer to the source! https://learn.adafruit.com/touch-tone-phone-dial-a-song/build-the-dial-a-song-circuit So it shows the circuit a few different ways. There’s an illustration of the circuit on a breadboard. (is it right? I’m not sure!) There’s a diagram! (Is that right? Some is, but some is definitely broken!) … Continue reading Phone-Modding Part 3 – Circuitry and Phone Guts