I’m working on an external circuit to add to my arduino synth. The circuit’s designed to play audio from a L and R channel through a built in speaker by default, but upon detecting a headphone jack, it stops playing through the speaker and indicates that it’s playing though the audio jack instead. I have a two pairs of LED indicators to indicate whether L or R is playing internally or externally. e.g. Red indicators for the speaker, and Blue indicators for the line out.
For the line out, I also added a switch to swap between mono and stereo and a pot to control the volume.
This is my first attempt at designing any kind of circuit, only found out what transistors look like a few hours ago. I’m unsure whether the logic is right, so I’m posting a diagram of the circuit so you can tell me if I should go ahead or go back to the drawing board!
I’m particularly concerned about whether my pot’s in the right place and whether it will interfere with the transistor next to it.
Here it is: