Arduino with Sound Sensor and LED

Hello everyone! Today I will show you how to use a sound sensor with arduino.

The required kits are :

1. An arduino and its adapter
2. Few jumper Wires
3. A digital Sound sensor
4. A led

There are 4 pins on the digital sound sensor. They are :

1. AO-Analog pin
2. G-Ground pin
3. +-positive power pin
4. DO-digital output pin

There are two legs on a LED. The longer leg is positive and the shorter leg is negative.

The steps to setup hardware are listed below:

• Connect "+" pin to 5V pin on the arduino.
• Connect "G" ground pin to GND pin on the arduino.
• Connect "DO" digital output pin to any analog or digital pins on the arduino.In this tutorial I connected it with A2
• Connect longer LED leg to pin 13 on the arduino. If you want to use anyother pin on the arduino, you need to use a 220 ohm resistor.
• Connect shorter LED leg to GND pin on the arduino.

The setup is complete. Now, upload the code and enjoy.

Remember to adjust the potentiometer. Doing so will solve your led continuosly blinking problem.

Check out the tutorial here:

const int ledpin=13; // ledpin and soundpin are not changed throughout the process
const int soundpin=A2;
const int threshold=200; // sets threshold value for sound sensor
void setup() {
Serial.begin(9600);
pinMode(ledpin,OUTPUT);
pinMode(soundpin,INPUT);
}
void loop() {
int soundsens=analogRead(soundpin); // reads analog data from sound sensor
if (soundsens>=threshold) {
digitalWrite(ledpin,HIGH); //turns led on
delay(1000);
}
else{
digitalWrite(ledpin,LOW);
}
}