int led = 7;
void setup() {
  // put your setup code here, to run once:
pinMode(led , OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
for(int i =0; i < 10; i++){
digitalWrite(led , HIGH);
delay(500);
digitalWrite(led , LOW);
delay(500);
Serial.println(("i up à 10"));
}
}