int ledPin = 13;

#include <Servo.h>

Servo s;

void setup() {
  // put your setup code here, to run once:
pinMode (ledPin, OUTPUT);
digitalWrite(ledPin, LOW);
Serial.begin(9600);
Serial.print("DAD");

s.attach(3);


delay(1000);

}

void loop() {
  s.write(90);
digitalWrite(ledPin, HIGH);
delay (1000);
digitalWrite(ledPin, LOW);
s.write(0);
delay (500);
}