Hi, i have a sound sensor board which works but doesn't seem to work very well. I've had the exact same problem with another version from adafruit.
I have a moving average sketch (100 readings @ 1/10th second delay for a complete update at 10 seconds). This sketch seems to work fine and performs as it should with a potentiometer and even the sound meter. The problem is the sensitivity of these meters.
I've turned the built-in gain so that the moving average settles at ~130. Nothing I do, except blowing directly into the mic will cause any change. But no matter how I hard I blow, the reading is no larger than 170. And they definitely not quite response to my clapping or voices or anything else.
So I wonder is there any way to significantly increase the sensitivity of sound sensor? I've played with the extremes of the internal gain to no avail.
I am willing to build, buy, and solder anything to get this thing sensitive enough that it responds to general room noise.