#include <DHT.h>
#include <LiquidCrystal_I2C.h>
#define DHTPIN 14
#define DHTTYPE DHT22
#define blower 15
#define led 18

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);


void setup() {
  pinMode(led,OUTPUT);
  dht.begin();
  LCD.init();
  LCD.backlight();
  pinMode(blower, OUTPUT);
}

void loop() {
  float t,h;
  char tmp[8];

  t=dht.readTemperature();
  h=dht.readHumidity();
   
  if (isnan(t) || isnan(h))
  {
    Serial.print(F("eror reading"));
  }
  else
  {
    dtostrf(t,5,1,tmp);
    LCD.setCursor(0,0);
    LCD.print(tmp);
    LCD.setCursor(5,0);
    LCD.write(0xdf);
    LCD.print("C");
    dtostrf(h,6,1,tmp);
    LCD.setCursor(0,1);
    LCD.print(tmp);
    LCD.setCursor(6,1);
    LCD.print( "%");
  }
  digitalWrite(led, HIGH);
  delay(2000); // this speeds up the simulation
}