#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


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 <= 2) {
                       digitalWrite(ledPin, LOW);
			myservo.write(pos);
			delay(30);
		}
                  else {
                  digitalWrite(ledPin, HIGH);
                }
	}
	for(pos = 90; pos>=1; pos -= 1) 	//goes from 180 to 0
	{
  		if (inputPin <= 2) {
   			myservo.write(pos);
                        digitalWrite(ledPin, LOW);
                        delay(30); //wait
  		}
                  else {
                    digitalWrite(ledPin, HIGH);
                }
 	}
 	val = digitalRead(inputPin);  		// read input value
  	if (val == HIGH) {            		// check if the input is HIGH
   		if (pirState == LOW) {
      			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 off
      			Serial.println("Motion ended!");
      						// We only want to print on the output change, not state
      			pirState = LOW;
    		}
  	}
}