#include <dht.h>

#define dataPin 8 // Defines pin number to which the sensor is connected

dht DHT; // Creats a DHT object

void setup() 

{

  Serial.begin(9600);

}

void loop() 

{

  //Uncomment whatever type you're using!

  int readData = DHT.read22(dataPin); // DHT22/AM2302

  //int readData = DHT.read11(dataPin); // DHT11

  float t = DHT.temperature; // Gets the values of the temperature

  float h = DHT.humidity; // Gets the values of the humidity

  // Printing the results on the serial monitor

  Serial.print("Temperature = ");

  Serial.print(t);

  Serial.print(" ");

  Serial.print((char)176);//shows degrees character

  Serial.print("C | ");

  Serial.print((t * 9.0) / 5.0 + 32.0);//print the temperature in Fahrenheit

  Serial.print(" ");

  Serial.print((char)176);//shows degrees character

  Serial.println("F ");

  Serial.print("Humidity = ");

  Serial.print(h);

  Serial.println(" % ");

  Serial.println("");

  delay(2000); // Delays 2 secods

}

#include <LiquidCrystal.h> // includes the LiquidCrystal Library

#include <dht.h>

#define dataPin 8

LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // Creates an LCD object. Parameters: (rs, enable, d4, d5, d6, d7)

dht DHT;

bool showcelciusorfarenheit = false;

void setup() 

{

  lcd.begin(16,2); // Initializes the interface to the LCD screen, and specifies the dimensions (width and height) of the display

}

void loop() 

{

  int readData = DHT.read22(dataPin);

  float t = DHT.temperature;

  float h = DHT.humidity;

  lcd.setCursor(0,0); // Sets the location at which subsequent text written to the LCD will be displayed

  lcd.print("Temp.: "); // Prints string "Temp." on the LCD

  //Print temperature value in Celcius and Fahrenheit every alternate cycle

  if(showcelciusorfarenheit)

  {

    lcd.print(t); // Prints the temperature value from the sensor

    lcd.print(" ");

    lcd.print((char)223);//shows degrees character

    lcd.print("C");

    showcelciusorfarenheit = false;

  }

  else

  {

    lcd.print((t * 9.0) / 5.0 + 32.0); // print the temperature in Fahrenheit

    lcd.print(" ");

    lcd.print((char)223);//shows degrees character

    lcd.print("F");

    showcelciusorfarenheit = true;

  }

  lcd.setCursor(0,1);

  lcd.print("Humi.: ");

  lcd.print(h);

  lcd.print(" %");

  delay(5000);

}