#include <LiquidCrystal.h>
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
#include <Servo.h>

const int inputPin = 2;
int pirState = LOW;
int val = 0;
int pinSpeaker = 3;
int angle = 0;


Servo servo;

void setup() {
  lcd.begin(16,2);
  pinMode(inputPin, INPUT);
  pinMode(pinSpeaker, OUTPUT);
  Serial.begin(9600);
  servo.attach(5);

  // put your setup code here, to run once:

}

void loop() {
  val = digitalRead(inputPin);
  Serial.println(val);
  if (val == HIGH) {
     lcd.print("motion detected");
     for (angle = 0; angle < 180; angle++) {
    servo.write(angle);
    digitalWrite(pinSpeaker, HIGH);
    Playtone(50, 150);
    delay(50);
    }
  }
  else {
    lcd.clear();
    digitalWrite(pinSpeaker, LOW);
    servo.write(90);
  }
  
  delay(450);
  // put your main code here, to run repeatedly:

}

void Playtone(long duration, int freq) {
  duration *= 1000;
  int period = (1.0 / freq) * 1000000;
  long elapsed_time = 0;
  while (elapsed_time < duration) {
    digitalWrite(pinSpeaker, HIGH);
    delayMicroseconds(period / 2);
    digitalWrite(pinSpeaker, LOW);
    delayMicroseconds(period / 2);
    elapsed_time += (period);
  }
  
}