Monitoring_DHT11.ino

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

//LCD
LiquidCrystal_I2C lcd(0x27, 16,2); //0x27 address I2C

#define DHTPIN 2     // what digital pin we're connected to

// Uncomment whatever type you're using!
#define DHTTYPE DHT11   // DHT 11
//#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
//#define DHTTYPE DHT21   // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

// Initialize DHT sensor.
// Note that older versions of this library took an optional third parameter to
// tweak the timings for faster processors.  This parameter is no longer needed
// as the current DHT reading algorithm adjusts itself to work on faster procs.
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  lcd.setCursor(2,0);
  lcd.print("MONITORING");
  lcd.setCursor(0,1);
  lcd.print("Temp & Humidity");
  delay (2000);

  lcd.setCursor(0,0);
  lcd.print("board DUE UNO V 3");
  lcd.setCursor(0,1);
  lcd.print("DUINO ELEKTRONIK");
  delay (2000);

  dht.begin();
}

void loop() {
  // Wait a few seconds between measurements.
  delay(2000);

  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t)) {
    lcd.print("Failed to read");
    return;
  }
  lcd.setCursor(0,0);
  lcd.print("Hum  : ");
  lcd.print(h);
  lcd.print(" %");
  lcd.setCursor(0,1);
  lcd.print("Temp : ");
  lcd.print(t);
  lcd.print(" *C ");
  
}