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Microphone Sensor with arduino


Microphone sound detection module
For sound detection Module has two outputs:

  1. AO, analog output, real-time output voltage signal of the microphone
  2. 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)

Procedure of Digital Pin

Follow the circuit diagram and make the connections as shown in the image given below.

Arduino Code for Digital Pin

/******* All the resources for this project: https://lihuo.blogspot.com*******/


int Led = 13 ;// define LED Interface
int buttonpin = 2; // define D0 Sensor Interface
int val = 0;// define numeric variables val
 void setup () {  pinMode (Led, OUTPUT) ;// define LED as output interface
  pinMode (buttonpin, INPUT) ;// output interface D0 is defined sensor
}
 void loop () {
  val = digitalRead(buttonpin);// digital interface will be assigned a value of pin 3 to read val
  if (val == HIGH) // When the sound detection module detects a signal, LED flashes
  {
    digitalWrite (Led, HIGH);
  } else {
    digitalWrite (Led, LOW);
  }

} Procedure of Analog Pin

Follow the circuit diagram and make the connections as shown in the image given below.
Arduino Code for Analog Pin
/*******All the resources for this project: https://lihuo.blogspot.com*******/
int sensorPin = A0; // select the input pin for the potentiometer
int ledPin = 13; // select the pin for the LED
int sensorValue = 0; // variable to store the value coming from the sensor
 void setup () {
  pinMode (ledPin, OUTPUT);
  Serial.begin (9600);
}
 void loop () ​{
  sensorValue = analogRead (sensorPin);
  digitalWrite (ledPin, HIGH);
  delay (sensorValue);
  digitalWrite (ledPin, LOW);
  delay (sensorValue);
  Serial.println (sensorValue, DEC);
}
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