LCD.ino

#include <dht.h>
#include <LiquidCrystal.h>
#define DHT11_PIN 8   

dht DHT;

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  lcd.begin(8, 2);
  Serial.begin(9600);
  lcd.clear();
}

void loop() {
  lcd.clear();
  Serial.print("DHT11, \t");
  int chk = DHT.read11(DHT11_PIN);
  switch (chk)
  {
    case DHTLIB_OK:  
        Serial.print("OK,\t"); 
        break;
    case DHTLIB_ERROR_CHECKSUM: 
        Serial.print("Checksum error,\t"); 
        break;
    case DHTLIB_ERROR_TIMEOUT: 
        Serial.print("Time out error,\t"); 
        break;
    case DHTLIB_ERROR_CONNECT:
        Serial.print("Connect error,\t");
        break;
    case DHTLIB_ERROR_ACK_L:
        Serial.print("Ack Low error,\t");
        break;
    case DHTLIB_ERROR_ACK_H:
        Serial.print("Ack High error,\t");
        break;
    default: 
        Serial.print("Unknown error,\t"); 
        break;
  }

  Serial.print(DHT.humidity, 1);
  Serial.print(",\t");
  Serial.println(DHT.temperature, 1);
  lcd.setCursor(0,0);
  lcd.print("Tem:");
  lcd.print((int) DHT.temperature);
  lcd.print("C");
  lcd.setCursor(0,1);
  lcd.print("Hum:");
  lcd.print((int) DHT.humidity);
  lcd.print("%");
  delay(2000);  
}