#include <Servo.h>
Servo myservo;
const int servo_pin=11,potentiometer_pin=A0;
int pos=0;
void setup() {
  // put your setup code here, to run once:
  myservo.attach(servo_pin);
  myservo.write(pos);
}

void loop() {
  // put your main code here, to run repeatedly:
  int value=analogRead(potentiometer_pin);
  pos=map(value,0,1023,0,180);
  myservo.write(pos);
  delay(20);
  
}