int PIN_IN1 = 8;
int PIN_IN2 = 9;
int PIN_ENA = 10;
int Pot,Val_led;
void setup() {
  pinMode(PIN_IN1, OUTPUT);
  pinMode(PIN_IN2, OUTPUT);  
  pinMode(PIN_ENA, OUTPUT);
  // Moteur en roue libre
  digitalWrite(PIN_IN1, LOW);
  digitalWrite(PIN_IN2, LOW);
  digitalWrite(PIN_ENA, LOW);
  Serial.begin(9600);
}

void loop() {
   digitalWrite(PIN_IN1, HIGH);
   digitalWrite(PIN_IN2, LOW);
   Pot = analogRead(A0); 
   Val_led = map(Pot, 0, 1023, 0, 255);  
   Serial.println(Val_led);
   analogWrite(PIN_ENA, Val_led);
}