#include <Servo.h>
int servoPin=12;
Servo Servo1;
void setup() 
{
  Servo1.attach(servoPin);
}
void loop()
{
  Servo1.write(0);
  delay(5000);
  Servo1.write(90);
  delay(5000);
  Servo1.write(180);
  delay(5000);
}