I want to build a clap switch, but somehow it doesnt seem to work.
At the beginning I tried this design: click
I checked everything several times, but it just doesnt do anything at all.
Then I tried several other circuits like this one or this one. But none of them works. In every circuit I used several different LM358s to eliminate them as a cause. On top of that, 4 different microphones were used.
The circuits were soldered and built on breadboards, with no improvement what so ever
The "amlified" signal looks like this:
and those "peaks" (which are often under 10mV) only occur when tapping really hard on the mic. the other stuff is just noise and changes all the time. the average voltage level jumps up and down by 100mV or so, too.
What could be the solution to my problem? I honestly ran out of ideas...