Using DHT11

This tutorial will show you how to use DHT11 with Arduino.

Nov 23, 2018

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weather

environmental sensing

Devices & Components

Arduino Uno Rev3

DHT22 Temperature Sensor

DHT11 Temperature & Humidity Sensor (4 pins)

DHT11 Temperature & Humidity Sensor (3 pins)

Jumper wires (generic)

Breadboard (generic)

Software & Tools

Arduino IDE

Project description

Code

DHT11 Library

Don't forget to add this library to the Arduino IDE.

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Latest commit to the master branch on Invalid date

Download as a zip

DHT11.ino

arduino

The code for receiving the data from the DHT11 and printing it out on the serial monitor.

1#include <dht11.h>
2#define DHT11PIN 4
3
4dht11 DHT11;
5
6void  setup()
7{
8  Serial.begin(9600);
9 
10}
11
12void loop()
13{
14  Serial.println();
15
16  int chk = DHT11.read(DHT11PIN);
17
18  Serial.print("Humidity (%): ");
19  Serial.println((float)DHT11.humidity, 2);
20
21  Serial.print("Temperature  (C): ");
22  Serial.println((float)DHT11.temperature, 2);
23
24  delay(2000);
25
26}

#include <dht11.h>
#define DHT11PIN 4

dht11 DHT11;

void  setup()
{
  Serial.begin(9600);
 
}

void loop()
{
  Serial.println();

  int chk = DHT11.read(DHT11PIN);

  Serial.print("Humidity (%): ");
  Serial.println((float)DHT11.humidity, 2);

  Serial.print("Temperature  (C): ");
  Serial.println((float)DHT11.temperature, 2);

  delay(2000);

}

DHT11 Library

Don't forget to add this library to the Arduino IDE.

no description/ Read More

Latest commit to the master branch on Invalid date

Download as a zip

Downloadable files

Schematics

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