#include "DHT.h"

#define DHTPIN 2     



#define DHTTYPE DHT22 

DHT dht(DHTPIN, DHTTYPE);
#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4


LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
String data;
int t;
int h;
void setup() {{
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));
  pinMode(13, OUTPUT);

  dht.begin();
}
{
  Serial.begin(115200);
   lcd.init();
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("welcome to");
  lcd.setCursor(2,1);
  lcd.print("SMART FARMING");
  delay(4000);
    Serial.println("welcome to my project");
  delay(500);
}
 
  


void loop() 
{ 
  float h = dht.readHumidity();

  float t = dht.readTemperature();
 
  float f = dht.readTemperature(true);

  
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  

 
  float hif = dht.computeHeatIndex(f, h);
  
  float hic = dht.computeHeatIndex(t, h, false);
  }
  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.print(f);
  Serial.print(F("°F  Heat index: "));
  Serial.print(hic);
  Serial.print(F("°C "));
  Serial.print(hif);
  Serial.println(F("°F"));
    lcd.setCursor(0,3);
    lcd.print("temp:");
    lcd.println(temperature);
    lcd.setCursor(10,3);
    lcd.print("hum:");
    lcd.println(humidity);
  delay(2000);
}
   if (t >= 40) {
  digitalWrite(13, HIGH);
  


   }

else
{
   if(t <= 40)
digitalWrite(13, LOW);
if (h >= 30) {
  digitalWrite(13, HIGH);
 
}


else { 
  
  if (h <= 30) {
  digitalWrite(13, LOW);
  }}
  


}}