#include <Servo.h>

Servo myservo;  
int potPin = A0; 
int val;        

void setup() {
  myservo.attach(9);  
  Serial.begin(9600); 
}

void loop() {
  val = analogRead(potPin); 

  if (val >= 412 && val <= 612) {
    int angle = map(val, 412, 612, 60, 120); 
    myservo.write(angle);          
  } else if (val < 412) {
    myservo.write(60);  
  } else {
    myservo.write(120);  
  }
  
  delay(15);  
  
  
  Serial.print("Potentiometer Value: ");
  Serial.print(val);
  Serial.print("\tAngle: ");
  Serial.println(myservo.read());  
  
  delay(1000);  
}