const int ECART=100;
const int TEMPO=2000;

void setup(){

	randomSeed(analogRead(1));

	for(int i=2;i<=8;i++){
		pinMode(i,OUTPUT);
	} 
}

void loop(){

	int luminosite1=analogRead(0);
	delay(100);
	int luminosite2=analogRead(0);

	if(luminosite2-luminosite1>ECART){

  
		afficheDe(random(1,7));

		delay(TEMPO);
		eteintDe();
	}
}

void afficheDe(int nombre){

	if(nombre==1){
		digitalWrite(5,HIGH);
	}
	
	if(nombre==2){
		digitalWrite(2,HIGH);
		digitalWrite(8,HIGH);
	}

	if(nombre==3){
		digitalWrite(2,HIGH);
		digitalWrite(5,HIGH);
		digitalWrite(8,HIGH);
	}

	if(nombre==4){
		digitalWrite(2,HIGH);
		digitalWrite(4,HIGH);
		digitalWrite(6,HIGH);
		digitalWrite(8,HIGH);
	}
	if(nombre==5){
		digitalWrite(2,HIGH);
		digitalWrite(4,HIGH);
		digitalWrite(6,HIGH);
		digitalWrite(8,HIGH);
		digitalWrite(5,HIGH);
	}

	if(nombre==6){
		digitalWrite(2,HIGH);
		digitalWrite(3,HIGH);
		digitalWrite(4,HIGH);
		digitalWrite(6,HIGH);
		digitalWrite(7,HIGH);
		digitalWrite(8,HIGH);
	}
}

void eteintDe(){
	for(int i=2;i<=8;i++){
		digitalWrite(i,LOW);
	}
}