Sound detection module for DIY projects.
Can be used in combination with Arduino.

Dimensions: 32.2mm x 16.2mm x 10.5mm (LxWxH) 32.2mm
Supply voltage: 3.3 to 5 Volts
Sensor Type: Electret Microphone
Signal Output Format: Digital Output, If the module detects no sound or the intensity of the signal is near the maximum limit, then "OUT" is High and the LED is Off
If the signal is too high, "OUT" is low and the LED is on.
The sensitivity can be adjusted with the potentiometer.
The module only registers whether there is sound or not and therefore does not measure how loud the sound is.


Connect:

"+ 5V" Supply voltage Plus
"GND" Supply voltage Min
"OUT" Output from the module can be directly connected to an Arduino, ATMEL, PIC or other MCU

Set up:

Turn the potentiometer clockwise until it stops and until the LED lights up. Then turn the potentiometer slightly anti-clockwise until the LED goes out, then make the desired sound intensity with your hands at about 50 cm distance until the LED goes on, this way you have set the correct level for sound detection for this module

Note: The output of the module is not suitable for directly controlling a relay, for this a semiconductor such as a transistor must be used.