Description
    The Sound sensor module is a simple microphone. Based on the power amplifier LM386 and  electret microphone, it can be used to detect whether there is any sound that beyond the threshold. The threshold can be adjusted by the on-board potentiometer.
    Adjust the on-board potentiometer to adjust the sensitivity. The module output HIHG/LOW when the voice is Lower/higher than the threshold set by the potentiometer.
Please note that this sensor can only outputs if there is sound that beyond the threshold, but not the loudness and frequency.
Application Idea
Sound controlled Lamp;
Sound monitoring
Features
On-board LED indicator
Threshold adjustable
Working voltage: 3.3V-5V
Digital Output is either high (sound detected) or low (no sound detected)
 
For sound detection Module has two outputs:
AO, analog output, real-time output voltage signal of the microphone
DO, when the sound intensity reaches a certain threshold, the output high and low signal
The threshold-sensitivity can be adjusted via potentiometer on the sensor
Connecting to the Arduino
Pin + to Arduino 5+
Pin – to Arduino –
Pin A0 to Arduino A0 (for analog program)
Pin D0 to Arduino 13 (for digital program)
Note : PCB color available in Red or Blue