//Written by Abdul Qayum bin Sharudin, Arif Hakimi bin Mohd Jalaludin,
//           Amirul Nur Akmal, Kanaapathi Darshan.
//Smart Window Project
#include <LiquidCrystal.h>
#include <Servo.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
Servo myservo;
int pos = 0;
int inputPin = 2;               
int pirState = LOW;             
int val = 0;  

void setup()
{
  pinMode(inputPin, INPUT); 
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);

  lcd.begin(16,2);
  lcd.setCursor(3, 0);
  lcd.print("Welcome to");
  lcd.setCursor(2,2);
  lcd.print("Smart Window");
  myservo.attach(3);
  delay(2000);
}

void loop() 
{
  val = digitalRead(inputPin);
  const float BETA = 3950;
  int analogValue = analogRead(A0);
  int analogValueout = analogRead(A1);
  int celsiusin = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  int celsiusout = 1 / (log(1 / (1023. / analogValueout - 1)) / BETA + 1.0 / 298.15) - 273.15;

  if (val == HIGH) 
  {   
    if (pirState == LOW) 
    {
      tone(4, 1100, 36000000);
      digitalWrite(LED_BUILTIN, HIGH);
      myservo.write(0);
      lcd.begin(16, 2);
      lcd.print("Motion Detected!");
      lcd.setCursor(2, 2);
      lcd.print("RESET System");
      delay(99999999999);
    }
  }

  if (celsiusout>40)
  {
    lcd.begin(16,2);
      lcd.setCursor(1, 0);
      lcd.print("Window Closed!");
      lcd.setCursor(1, 2);
      lcd.print("Out:");
      lcd.setCursor(5, 2);
      lcd.print(celsiusout);
      lcd.setCursor(7,2);
      lcd.print("C");
      lcd.setCursor(9,2);
      lcd.print("In:");
      lcd.setCursor(12,2);
      lcd.print(celsiusin);
      lcd.setCursor(14,2);
      lcd.print("C");  
      if(pos+=45)
      {
        myservo.write(0);
        delay(300); 
      }
      else if(pos+=0)
      {
        delay(300);
      }
      else
      {
        delay(300);
      }
    }
    else if (celsiusin<25)
    {
      lcd.begin(16,2);
      lcd.setCursor(1, 0);
      lcd.print("Window Closed!");
      lcd.setCursor(1, 2);
      lcd.print("Out:");
      lcd.setCursor(5, 2);
      lcd.print(celsiusout);
      lcd.setCursor(7,2);
      lcd.print("C");
      lcd.setCursor(9,2);
      lcd.print("In:");
      lcd.setCursor(12,2);
      lcd.print(celsiusin);
      lcd.setCursor(14,2);
      lcd.print("C");  
      if(pos+=45)
      {
        myservo.write(0);
        delay(300); 
      }
      else if(pos+=0)
      {
        delay(300);
      }
      else
      {
        delay(300);
      }
    }
    else
    {
    if (celsiusin>celsiusout)
    {
      lcd.begin(16, 2);
      lcd.setCursor(1, 0);
      lcd.print("Window Opened!");
      lcd.setCursor(1, 2);
      lcd.print("Out:");
      lcd.setCursor(5, 2);
      lcd.print(celsiusout);
      lcd.setCursor(7,2);
      lcd.print("C");
      lcd.setCursor(9,2);
      lcd.print("In:");
      lcd.setCursor(12,2);
      lcd.print(celsiusin);
      lcd.setCursor(14,2);
      lcd.print("C");
      if(pos+=0)
      {
        myservo.write(45);
        delay(300); 
      }
      else if(pos+=45)
      {
        delay(300);
      }
      else
      {
        delay(300);
      }
      
    }
  else if (celsiusout>celsiusin)
    {
      lcd.begin(16,2);
      lcd.setCursor(1, 0);
      lcd.print("Window Closed!");
      lcd.setCursor(1, 2);
      lcd.print("Out:");
      lcd.setCursor(5, 2);
      lcd.print(celsiusout);
      lcd.setCursor(7,2);
      lcd.print("C");
      lcd.setCursor(9,2);
      lcd.print("In:");
      lcd.setCursor(12,2);
      lcd.print(celsiusin);
      lcd.setCursor(14,2);
      lcd.print("C");  
      if(pos+=45)
      {
        myservo.write(0);
        delay(300); 
      }
      else if(pos+=0)
      {
        delay(300);
      }
      else
      {
        delay(300);
      }
    }
  else
  {
      lcd.begin(16,2);
      lcd.setCursor(1, 0);
      lcd.print("Window Closed!");
      lcd.setCursor(1, 2);
      lcd.print("Out:");
      lcd.setCursor(5, 2);
      lcd.print(celsiusout);
      lcd.setCursor(7,2);
      lcd.print("C");
      lcd.setCursor(9,2);
      lcd.print("In:");
      lcd.setCursor(12,2);
      lcd.print(celsiusin);
      lcd.setCursor(14,2);
      lcd.print("C");
      if(pos+=0)
      {
        myservo.write(0);
        delay(300); 
      }
      else if(pos+=45)
      {
        delay(300);
      }
      else
      {
        delay(300);
      }
  }
delay(1000);
}
}