#include <Servo.h>
int ServoPin= 3;
Servo Servo1;
void setup(){
  Servo1.attach(ServoPin);
}
void loop(){
  Servo1.write(0);
  delay(1000);
  Servo1.write(90);
  delay(1000);
  Servo1.write(180);
  delay(1000);
}