Arduino Temperature and Humidity Center

/*


  The circuit:
 * LCD RS pin to digital pin 7
 * LCD Enable pin to digital pin 8
 * LCD D4 pin to digital pin 9
 * LCD D5 pin to digital pin 10
 * LCD D6 pin to digital pin 11
 * LCD D7 pin to digital pin 12
 * LCD R/W pin to ground
 * LCD VSS pin to ground
 * LCD VCC pin to 5V
 * 10K resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)



// include the library code:
#include <LiquidCrystal.h>
#include <SimpleDHT.h>

int pinDHT11 = 2;
SimpleDHT11 dht11;

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 8, 9, 10, 11, 12 );

void setup() {
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  //lcd.print("hello, world!");
}

void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  //lcd.print(millis() / 1000);
  lcd.print("Sample DHT11...");
  lcd.clear();
  // read with raw sample data.
  byte temperature = 0;
  byte humidity = 0;
  byte data[40] = {0};
  if (dht11.read(pinDHT11, &temperature, &humidity, data)) {
    lcd.print("Read DHT11 failed");
    delay(1000);
    lcd.clear();
    return;
  }
  //lcd.print("Sample OK: ");
  lcd.print("TEMP = "); lcd.print((int)temperature); lcd.print(" *C");
  lcd.setCursor(0,2);
  lcd.print("HUMD = "); lcd.print((int)humidity); lcd.print(" % ");
  
  // DHT11 sampling rate is 1HZ.
  delay(1000);
    
    
}