#include <Servo.h>

Servo myServo;

int potPin = A0; //port connect to potensionmeter
int val;
int inVal;


void setup() {
  // put your setup code here, to run once:
  myServo.attach(9);

}

void loop() {
  //value of the potentiometer (value between 0 and 1023)
  inVal = analogRead(potPin);

  //scale it to use it with the servo (value between 0 and 180)
  val = map(inVal,0,1023,0,180);

  // sets the servo position according to the scaled value
  myServo.write(val);
  delay(2000);

}