#include <Servo.h>

Servo myservo;

void setup() {
  pinMode(13, OUTPUT);
  myservo.attach(A0);
  myservo.write(30);
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(13, 1);
  delay(1000);
  digitalWrite(13, 0);
  delay(1000);
  // put your main code here, to run repeatedly:

}