I think what I'm looking for is essentially this: https://store.arduino.cc/usa/grove-sound-sensor
I have an electret microphone and an LM386 amplifier- is there a straightforward way to recreate a similar circuit? (I can't find a datasheet for this circuit, nor any other circuits that do the same [output volume readable by an arduino]).
The goal is to be able to read volume via an analog pin- I'm NOT interested in losslessly capturing a waveform or anything.
Also, I'm not looking to undercut Grove or save the $5 to buy this chip (I just bought 2 in case I can't figure this out)- but I'd like to 1. learn what/how/why the circuit works, and 2. potentially be able to modify it.
Thanks for any help! (Also- any tips you can think of that might go along with using this circuit would be appreciated!)