1. LED LIGHT USING SOUND SENSOR & LIGHT SENSOR
CHIRAZ BOUDHRIOUA

2. Plan INTRODUCTION REQUIREMENTS AND COST ESTIMATE
CONNECTING THE SOUND SENSOR
CONNECTING THE LEDS
PROGRAMMING THE ARDUINO
PROJECT IMPLEMENTATION

3. Introduction
Sound sensors can be used for a variety of things, one of them could be turning
lights off and on by clapping. Today however we are going to use hook up the sound
sensor and the light sensor to an array of LED lights which will beat with music,
clapping or knocking. 1

4. Almost any Arduino I used the popular Arduino Uno($23.90)
REQUIREMENTS AND COST ESTIMATE
Almost any Arduino I used the popular Arduino Uno($23.90)
Some breadboard cables($4,70 65 pcs)
A sound sensor ($6.90)
A light sensor ($3.50)
At least 1 LED light – I used 11! The more the better! ($ pcs)
As many LEDs you are using you should have resistors. 333 ohm resistors should do the trick for most LEDs but I used 220 ohm ones. ($0.13 )
=> The project cost $42,53 2

5. CONNECTING THE SOUND SENSOR
The sound sensor should look something like this. 3

6. CONNECTING THE LIGHT SENSOR
The light sensor should look something like this. 4

7. CONNECTING THE LEDS 5

8. PROGRAMMING THE ARDUINO
void setup(){
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
pinMode(6,OUTPUT);
pinMode(7,OUTPUT);
pinMode(8,OUTPUT);}
void outs(String a){
if(a=="FAIBLE"){
digitalWrite(3,HIGH);
digitalWrite(4,LOW);
digitalWrite(5,LOW);
digitalWrite(6,LOW); }
if(a=="MOYENNE"){
digitalWrite(4,HIGH);
if(a=="FORTE"){
digitalWrite(5,HIGH);
if(a=="TRES_FORTE"){
digitalWrite(6,HIGH);
} }
String lightlevel(int a){
String s;
if(a<70) {
s= "Faible"; }
if(a>70 && a<200) {
s= "Moyenne";
if(a>200) {
s= "Forte";
return s;
void outl(String a){
if(a=="Faible"){
digitalWrite(7,LOW);
digitalWrite(8,LOW); }
if(a=="Moyenne"){
digitalWrite(7,HIGH);
if(a=="Forte"){
digitalWrite(8,HIGH);
void loop(){
String r;
int a = analogRead(A1);
int b = analogRead(A2);
a=(a*1.2);//amplification du son
outs(soundlevel(a));
outl(lightlevel(b)); }
String soundlevel(int a){
String s;
if(a<200) {
s= "FAIBLE"; }
if(a<350 && a>200) {
s= "MOYENNE";
if(a>350 && a<500) {
s= "FORTE";
if(a>500) {
s= "TRES_FORTE";
return s; } 6

9. PROJECT IMPLIMENTATION7

10. thank you for your attention8