simpleWeather.pde

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

#define DHTPIN 2     

#define DHTTYPE DHT22   // DHT 22  (AM2302)
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal lcd(7, 8, 9, 10, 11, 12); 

void setup() {
  Serial.begin(9600);  
  dht.begin();
  lcd.begin(16, 2);
  delay(5000);
}

void loop() {
  // 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();
  float t = dht.readTemperature()*1.8+32;

  // check if returns are valid, if they are NaN (not a number) then something went wrong!
  if (isnan(t) || isnan(h)) {
    Serial.println("Failed to read from DHT");
  } else {
    Serial.print("Humidity: "); 
    Serial.print(h);
    Serial.print(" %\t");
    Serial.print("Temperature: "); 
    Serial.print(t);
    Serial.println(" *F");
    
    lcd.setCursor(0, 0);
    lcd.print("T: ");
    lcd.print(t);
    lcd.print(" *F");
    
    lcd.setCursor(0, 1);
    lcd.print("H: ");
    lcd.print(h);
    lcd.print(" %");
    
  }
}