#include <LiquidCrystal_I2C.h>
#include <Wire.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);

#include <dht.h>
dht DHT;
#define analogIn0 A0
#define analogIn1 A1
#define DHT22_PIN 5
#define led1 11
#define led2 12
#define led3 13


int RawValue= 0;
double temp2 = 0;
int ave = 0;
const double BETA = 3950;



int Value= 0;
double temp1 = 0;
const double beta = 3950;



void setup(){
  lcd.begin(20,4);
lcd.backlight();

pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
lcd.setCursor(14, 1);
lcd.print("Ave=");
}

void loop()
{
  int chk = DHT.read22(DHT22_PIN);
  lcd.setCursor(0, 0);
  lcd.print("Temp3=");
  lcd.print(DHT.temperature, 1);
  lcd.print(" ");
  lcd.setCursor(0, 3);
  lcd.print("Humidity=");
  lcd.print(DHT.humidity, 1);
  lcd.print(" ");
  if(DHT.humidity>=50){
  digitalWrite(led2,HIGH);
  }
  else {
    digitalWrite(led2,LOW);
  }
  if(DHT.humidity <=49){
    digitalWrite(led3,HIGH);
  }
  else{
    digitalWrite(led3,LOW);
  }
  


  RawValue = analogRead(analogIn0);
  temp2 = 1 / (log(1 / (1023. / RawValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  lcd.setCursor(0, 1);
  lcd.print("Temp2=");
  lcd.println(temp2,1);
  lcd.print(" ");
  
  ave = temp1+DHT.temperature+temp2/3;
  lcd.setCursor(15,2);
  lcd.print(ave);
  lcd.print(" ");
  if(ave >=35 || temp1 > 50 || temp2 > 50 || DHT.temperature > 50){
    digitalWrite(led1,HIGH);
    delay(200);
    digitalWrite(led1,LOW);
    delay(200);
  }

  Value = analogRead(analogIn1);
  temp1 = 1 / (log(1 / (1023. / Value - 1)) / beta + 1.0 / 298.15) - 273.15;
  lcd.setCursor(0, 2);
  lcd.print("Temp1=");
  lcd.println(temp1,1);
  lcd.print(" ");
  
}