I'm working on my first circuit which includes LM386 chip and some music. Since I don't have a lot of experience with electronics I need a little help with audio plug. It's the same as that:
I know that number 1 on the audio plug is GND. The biggest problem I have is that I don't know how to correctly connect other four pins to my input on LM386. As I read, this audio jack is stereo, but LM386 is mono. I followed this tutorial and I would like to somehow connect this audio jack to 10K potentiometer. Here's schematics of my current circuit:
What should I do now – how to connect this audio jack to my LM386's input?
Best Answer
If you want both the left and right channels to provide audio you need to make a little mixer.
Two resistors (around 10KΩ) connected to the left and right inputs (pins 2 and 5), then joined together, will make a simple mixer. Then you link that to the LM386's IN + through a capacitor (around 10µF is usually OK).
Pin 1 links direct to the IN -
You ignore pins 3 and 4 - they are used to pass the audio through to another destination (internal speakers) when there is no plug in the socket.
simulate this circuit – Schematic created using CircuitLab