//For evaluation WOKWI simulation software with 2 sensors DHT22 and HC-SR04
//and LCD I2C
//2/21/23


/* How to use the DHT-22 sensor with Arduino uno
   Temperature and humidity sensor
   More info: http://www.ardumotive.com/how-to-use-dht-22-sensor-en.html
   Dev: Michalis Vasilakis // Date: 1/7/2015 // www.ardumotive.com */

//Libraries
#include <DHT.h>;

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

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

//Constants
#define DHTPIN 2     // what pin we're connected to
#define DHTTYPE DHT22   // DHT 22  (AM2302)
DHT dht(DHTPIN, DHTTYPE); //// Initialize DHT sensor for normal 16mhz Arduino


//Variables
int chk;
float hum;  //Stores humidity value
float temp; //Stores temperature value

void setup()
{
  Serial.begin(9600);

  dht.begin();
  lcd.begin(16,2);               // initialize the lcd 

}

void loop()
{
  //Read data and store it to variables hum and temp
  hum = dht.readHumidity();
  temp = dht.readTemperature();

  //Print temp and humidity values to serial monitor
  Serial.print("Humidity: ");
  Serial.print(hum);
  Serial.print(" %, Temp: ");
  Serial.print(temp);
  Serial.println(" Celsius");

  lcd.setCursor(0, 0);
  lcd.print("RH:");
  lcd.print((int)hum);
  lcd.print("% T:");
  lcd.print(temp, 1);
  lcd.print(" oC");

  delay(500);
}