#include <Servo.h>
Servo Servo;

void setup()
{
  Serial.begin(9600);
  Servo.attach(9);
}
void loop()
{
  int x=analogRead(A0);
  int y=map(x,0,1023,0,180);

  Servo.write(y);
  delay(3000);
  Serial.println("Angle is 0 degree");
  delay(2000);
  Serial.println("Angle is 90 degree");
  delay(2000);
  Servo.write(A0);
  Serial.println("Angle is 180 degree");
  delay(2000);
}