Noise Sound Audio Sensor analog and trigger output, adjustable sensitivity. Compatible with Arduino and other Micro Controllers.
The noise sensor has a tiny microphone capsule on bard, and can trigger an output signal when an adjustable noise level has reached. The additional analog output can feed for example into a microphone amplifier or a sound processor. The power supply should be chosen accordingly to the connected micro controller; for example 5V for an Arduino Uno, or 3.3V for an Arduino Due or Zero.
Please see the schematic; it shows a trigger circuit very similar to the one on the Noise/Audio Sensor board. The analog output is not shown on the drawing, but it is just the straight signal from the microphone.