Sentry

#include <Servo.h>

Servo myservo;  // create servo object to control a servo
                // a maximum of eight servo objects can be created

int pos = 0;    // variable to store the servo position
int ledPin = 4;                // choose the pin for the LED
int inputPin = 2;               // choose the input pin (for PIR sensor)
int pirState = LOW;             // we start, assuming no motion detected
int val = 0;                    // variable for reading the pin status
int sevloco = 0;
int pin13 = 13;


void setup()
{
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
  pinMode(ledPin, OUTPUT);      // declare LED as output
  pinMode(inputPin, INPUT);     // declare sensor as input
  Serial.begin(9600);
}


void loop()
{
  for(pos = 0; pos < 90; pos += 1)  // goes from 0 degrees to 180 degrees
  {
  if (inputPin <= 0) {
    myservo.write(pos);
    delay(30); //wait for move
  }
  }
  for(pos = 90; pos < 90; pos += 1) //goes from 180 to 0
  {
  if (inputPin <= 0) {
   myservo.write(pos); //tell servo to move
  delay(30); //wait
  }

}
 val = digitalRead(inputPin);  // read input value
  if (val == HIGH) {            // check if the input is HIGH
    if (pirState == LOW) {
      // we have just turned on
      Serial.println("Motion detected!");

      digitalWrite(ledPin, HIGH);
      delay(3500);
      // We only want to print on the output change, not state
      pirState = HIGH;

    }
  } else {
    digitalWrite(ledPin, LOW); // turn LED OFF
    if (pirState == HIGH){
      // we have just turned of
      Serial.println("Motion ended!");

      // We only want to print on the output change, not state
      pirState = LOW;
    }
  }
}