Crowtail- Sound Sensor can detect the sound loudness of the environment. The main component of the module is a simple microphone to receive the sound signal, with band pass filter and a LMV358 amplifier to make the output signal easy to be received by microprocessor. This module outputs analog signal that shows the relative loudness. Besides, an on-board potentiometer can be used to adjust output voltage.
I apply it to sound sensing detection. I am very satisfied with this sound sensor. Although Its structure is simple, it is really useful. Else, voice can not be too far away from the microphone, or you will not receive. (Posted on 5/16/2017)