ARDUINO WITH DHT 22 (AM2302)

Sory sudah beberapa hari belum nge-posting...hehehehe

oke untuk kali ini kita akan bermain dengan sensor suhu dan kelembapan..dengan menggunakan dht-22........

oke langsung saja ke bahan yang diperlukan:

-arduino

-dht 22

-whiteboard

-kabel jumper

 UNTUK programnya:

/*

  AM2302 Temperature / Humidity Sensor (DHT22)

  

  Current Code

  Created by Derek Erb 30/01/2013

  Modified 30/01/2013

  

  Requirement : Arduino + AM2302 sensor connected to pin 2

  

  DHT Library from:

  https://github.com/adafruit/DHT-sensor-library

  v0.03 Delays and formatting

  v0.02 Delay 3 seconds between readings

*/

#include "DHT.h"          // DHT & AM2302 library

// Version number

const float fVerNum = 0.03;

// Data pin connected to AM2302

#define DHTPIN 2

#define DHTTYPE DHT22       // DHT 22  (AM2302)

DHT dht(DHTPIN, DHTTYPE);   // LED pins

//////////////////////////////////////////////////////

//

// SETUP

//

void setup() {

  // Setup serial monitor

  Serial.begin(9600);

  

  // Wait 3 seconds

  delay(3000);

  

  Serial.println(F("\nAM2302 Sensor"));

  Serial.print(F("Version : "));

  Serial.println(fVerNum);

  Serial.println(F("Arduino - Derek Erb\n"));

  delay(5000);

  

  dht.begin();

}

  

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();

  // check if returns are valid, if they are NaN (not a number) then something went wrong!

  if (isnan(t) || isnan(h)) {

    Serial.println(F("Failed to read from DHT"));

  }

  else {

    Serial.print(F("Humidity: ")); 

    Serial.print(h);

    Serial.print(F(" %\t"));

    Serial.print(F("Temperature: ")); 

    Serial.print(t);

    Serial.println(F(" C"));

  }

  

  // Wait 3 seconds

  delay(3000);

}

setelah anda copy programnya lanjut ke-proses prangkaian......

seperti gambar dibawah ini:

setelah perangkaian silahkan download dulu library dht22 disini:

http://www.4shared.com/rar/fweXbdc8/DHT22.html?

setelah library sudah didownload dan dimasuk=kan ke-library arduino,silahkan upload programnya ke arduinonya...

dan ini untuk hasilnya..

ok selamat mencoba dan mengembangkan...GOOD LUCK.!!!!1