void PWM_Servo(unsigned char angle);
const int sortie_PWM = 11;
const int potentiometre = A2;
int val, angle_rotation, duree_impulsion, duree_niveau_bas;

void setup() {
  pinMode(sortie_PWM,OUTPUT);
  pinMode(potentiometre,INPUT);
  Serial.begin(9600);
}

void loop() {


}

void PWM_Servo(unsigned char angle)
{
  duree_impulsion = (angle * 2400) / 180;
  digitalWrite(sortie_PWM,HIGH);
  delayMicroseconds(duree_impulsion);
  digitalWrite(sortie_PWM,LOW);
  duree_niveau_bas = 2400 - duree_impulsion;
  delay(10);
  delayMicroseconds(duree_niveau_bas);
  Serial.print(
}