#include <Servo.h> //Include the Servo Library.
  // Create servo objects for each servo motor
  Servo Servo_North;
  Servo Servo_East;
  Servo Servo_West;
  Servo Servo_South;

  int delay_Time = 500;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Enter The Position (0 to 180) for all Servo");
  //Attach each Servo Pin to a specific Pin (PMW Pin 3, 5, 6, 9)
  Servo_North.attach(3);
  Servo_East.attach(5);
  Servo_West.attach(6);
  Servo_South.attach(9);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (Serial.available()>0){
    int pos = Serial.parseInt();

  //Move all Servo gradually from 0 to 180 degree
  if(pos >= 0 && pos <= 180){
    Servo_North.write(pos);
    Servo_East.write(pos);
    Servo_West.write(pos);
    Servo_South.write(pos);
    delay(delay_Time);

    //Provide Feedback to the User
    Serial.print("All Servo Set to ");
    Serial.print(pos);
    Serial.println("  degrees Angle.");
  }

  else{
    // If Input Out of the rangle, notify the user
    Serial.println("Invallid Position! Please Enter a Valude between 0 t0 180");
  }
  // Clear any remaining characters in the serial buffer
    while (Serial.available() > 0) {
      Serial.read();
    }
}
}