unsigned long currentTime=0;
unsigned long previousTime=0;
unsigned long interval,interval1=200, interval2=200;
bool ledState=LOW;
int compteur=10;
int vitesse=800;
int boucle=20;
int x;
int y;
void setup() {

	pinMode(3,OUTPUT);
	pinMode(4,OUTPUT);
	pinMode(7,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(5,OUTPUT);
}

void loop() {

	// digitalWrite(6,HIGH);
  analogWrite(6, HIGH);
  analogWrite(5, 200);

  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(7, LOW);

if (boucle > 1) {

  digitalWrite(3, HIGH);   
  delay(vitesse);             
  digitalWrite(3, LOW);    
  delay(100);                      

  digitalWrite(4, HIGH);   
  delay(vitesse);             
  digitalWrite(4, LOW);   
  delay(100);             

  digitalWrite(7, HIGH);  
  delay(vitesse);             
  digitalWrite(7, LOW);   
  delay(100);

  boucle = boucle - 1;
  }
else {
    boucle = 20;
    vitesse = 800;
    x=0;
    y=0;

  digitalWrite(3, HIGH); 
  digitalWrite(4, HIGH);
  digitalWrite(7, HIGH);

// Allumer progressivement la LED (0 --> 255)
  while (x <= 225) {
    analogWrite(6, x);
    delay(50);
    x = x + 1;
  }

  // Eteindre progressivement la LED (255 --> 0)
  x = HIGH;
  y = 225;
  while (x >= 0) {   

    analogWrite(6, x);
    delay(50);
    x = x - 1;
  }

  while (y <= 225) {
    analogWrite(5, y);
    delay(50);
    y = y + 1;
  }

  // Eteindre progressivement la LED (255 --> 0)
  x = 225;
  while (y >= 0) {   

    analogWrite(5, y);
    delay(50);
    y = y - 1;
  }

}

}