#include <Servo.h>

Servo arttc_servo ;
int poten = 4 ; // A4
int value ;

void setup(){
  Serial.begin(9600);
arttc_servo.attach(11);

  }

void loop()  {
  value = analogRead (poten);
  value = map(value,0,1023,0,100) ;
  arttc_servo.write(value) ;
  Serial. println(value);

}