Published October 31, 2022

Sound Sensing Lights for Home automation

Sound sensing LEDs, can act as a music synchronizer or as an automated light for the room which turns on when someone claps or pinches.

BeginnerFull instructions provided1 hour652

Sound Sensing Lights for Home automation

Things used in this project

Hardware components

Arduino UNO

Solderless Breadboard Full Size

LED (generic)

Sound Detection Sensor Module for Intelligent Vehicle Arduino Compatible

Jumper wires (generic)

Resistor 221 ohm

Software apps and online services

Arduino IDE

Story

This is a fun IOT project that i implemented for the festive season, Here basically the lights responds to the sound, you can turn it on/off with a clap or pinch, also it works as a great music synchronizer.

if video doesn't play- (https://youtube.com/shorts/Had1Z14nfMc?feature=share)

I wanted to make a music synchronizer using LED strip, i decided to implement it on generic LED's and breadboard before moving on the LED strip and boom it works super well. It can be used for home automation, like,

if video doesn't play- (https://youtube.com/shorts/_lfBUIf-z8Q?feature=share)

think about getting into your room and turning on the light using your clap, not to forget one won't have to get out of their bed for turning off light while sleeping xD

So that's how i made it-

Step-1

I connected multiple LED's in series (this fashion is pretty neat for saving wires and making circuit less messy)

Step-2

Now I got my sound detector sensor, and connected it's +end to the 5v pin in Arduino, -end to gnd pin, analog input to the A0 pin and digital input to 7th Digital pin of my uno.

Step-3

Then i checked for the sensitivity of the sensor, by providing a stimulus using Arduino IDE, and had to rotate the potentiometer on the sensor for adjusting the sensitivity level. it was working in the range of 100 to 900, i used this data to make a slope between LEDs and the sensor.

Step-4

Then i provided power to the LED using 9th digital pin of the uno, and then it was coding time.

Step-5

And boom!!! the project was ready, i clapped and played music and it was fun watching my LED's reacting to the sounds and synchronizing with it.

int anasound= A0;
int anaval;       
float ledbright;
int led=9;

void setup() {
  // put your setup code here, to run once:
pinMode(anasound,INPUT);
pinMode(led,OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
anaval=analogRead(anasound);
delay(200);
ledbright=(255./1000.)*anaval;
analogWrite(led,ledbright);
if(ledbright>255){
  ledbright=255;
}
Serial.print("Ledval= ");
Serial.print(ledbright);
Serial.print(" ");
Serial.print("sound sensor= ");
Serial.println(anaval);
delay(200);
}

int digsound= 7;
int digval;
int ledbright=0;
int led=9;

void setup() {
  // put your setup code here, to run once:
pinMode(digsound,INPUT);
pinMode(led,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digval=digitalRead(digsound);
if(digval==1){
  if(ledbright==0){
   digitalWrite(led,HIGH);
   ledbright=1; 
  }
  else{
    digitalWrite(led,LOW);
    ledbright=0;
  }
}
}