VALLALAR ATL WEATHER STATION

 

What is a DHT11 Sensor?

DHT11 is a low-cost digital sensor for sensing temperature and humidity.  This sensor can be easily interfaced with any micro-controller such as Arduino, Raspberry Pi etc… to measure humidity and temperature instantaneously.

CIRCUIT DIAGRAM

ARDUINO CODE

#include <SimpleDHT.h>

// for DHT11, 

//      VCC: 5V or 3V

//      GND: GND

//      DATA: 2

int pinDHT11 = 2;

SimpleDHT11 dht11(pinDHT11);

void setup() {

  Serial.begin(115200);

}

void loop() {

  // start working...

  Serial.println("=================================");

  Serial.println("VALLALAR ATL WEATHER STATION");

  

  // read without samples.

  byte temperature = 0;

  byte humidity = 0;

  int err = SimpleDHTErrSuccess;

  if ((err = dht11.read(&temperature, &humidity, NULL)) != SimpleDHTErrSuccess) {

    Serial.print("Read DHT11 failed, err="); Serial.println(err);delay(1000);

    return;

  }

  

  Serial.print("TEMPERATURE: ");

  Serial.print((int)temperature); Serial.print(" *C, "); 

  Serial.print((int)humidity); Serial.println(" H");

  

  // DHT11 sampling rate is 1HZ.

  delay(3000);

}