Sunday, 25 February 2018

Interfacing Humidity and Temperature (DHT11) Sensor to Arduino




DTH11 includes both Humidity and Temperature sensor.

Hardware Components required:-
1) DTH11 Humidity and Temperature Sensor
2) Arduino UNO
3)Connecting Wires
4) DTH library
You can get the sensor DTH11 Data Sheet from the below link
http://www.micro4you.com/files/sensor/DHT11.pdf



Hardware Connections

DTH11 To Arduino
Vcc --- 5v
GND --- GND
Data Pin --- 3rd Pin of Arduino


Step 1: How to Include DHT Library
















Picture of How to Include DHT Library






























 

 

 

 

 

Please download the DHT library from the below link.
https://drive.google.com/file/d/0B1paTI5fzcHodno5azFOSVVDT0E/view?usp=sharing
Go to Sketch--> Include Library --> Add Zip File
As shown in the above screen shot please browse the ZIP file and include the library after including the library.
Close the Arduino IDE and open it again then you will find the library included.

 

 

 

 Step 2: Program and Results

 










Picture of Program and Results





 

 

 

Code:


#include<dht.h>
dht DHT;
// if you require to change the pin number, Edit the pin with your arduino pin.
#define DHT11_PIN 3
void setup() {
Serial.begin(9600);
Serial.println("welcome to TechPonder Humidity and temperature Detector"); }
void loop() { // READ DATA
int chk = DHT.read11(DHT11_PIN);
Serial.println(" Humidity " );
Serial.println(DHT.humidity, 1);
Serial.println(" Temparature ");
Serial.println(DHT.temperature, 1);
delay(2000);
}


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