#include "DHT.h"
#include <LiquidCrystal_I2C.h>

#define dht 12
#define pir 13
#define led1 19
#define led2 18
#define led3 5
#define led4 17
#define led5 16

LiquidCrystal_I2C lcd(0x27, 16, 2);  
DHT dht22(dht, DHT22);

void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
  pinMode(led5, OUTPUT);
  pinMode(pir, INPUT);
}

void loop() {
  float humi  = dht22.readHumidity();
  float temp = dht22.readTemperature();
  int pirval = digitalRead(pir);
  
  lcd.setCursor(0, 1);
    lcd.print("Temp:");
    lcd.print(temp);
    lcd.print("C");
  lcd.setCursor(0, 0);
    lcd.print("Humi:");
    lcd.print(humi);
    lcd.print("%");

  if(temp <= 10){
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
  }else if(temp >= 15 && temp <= 25){
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
  }else if(temp >= 26 && temp <= 35){
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, HIGH);
    digitalWrite(led5, LOW);
  }else if(temp >= 36){
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, HIGH);
    digitalWrite(led5, HIGH);
  }
  if(temp >= 50){
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, HIGH);
    digitalWrite(led5, HIGH);
  delay(200);
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
  delay(200);
  }

  if(pirval == 1){
    lcd.setCursor(14, 0);
    lcd.print("ON");
    for(int i=0; i<=3; i++){
      digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led5, HIGH);
    delay(200);
      digitalWrite(led1, LOW);
      digitalWrite(led2, LOW);
      digitalWrite(led3, LOW);
      digitalWrite(led4, LOW);
      digitalWrite(led5, LOW);
    delay(200);
    }
  }else{
    lcd.setCursor(14, 0);
    lcd.print("  ");
  }
}