DHT11 with Arduino UNO || Temperature & Humidity Sensor || INNOVATIVE SCIENTIFIC INVENTIONS ||

Hello Friends! Welcome back to 'INNOVATIVE SCIENTIFIC INVENTIONS'. Today I will show you. How to use DHT11 with  Arduino UNO R3.

Circuit Diagram:

Code:

                   //CODE\\

// Example testing sketch for various DHT humidity/temperature sensors

// Written by ladyada, public domain

// REQUIRES the following Arduino libraries:

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

// - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor

#include "DHT.h"

#define DHTPIN 2     // Digital pin connected to the DHT sensor

// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 --

// Pin 15 can work but DHT must be disconnected during program upload.

// Uncomment whatever type you're using!

#define DHTTYPE DHT11   // DHT 11

//#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

//#define DHTTYPE DHT21   // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V

// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1

// to 3.3V instead of 5V!

// Connect pin 2 of the sensor to whatever your DHTPIN is

// Connect pin 4 (on the right) of the sensor to GROUND

// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

// Initialize DHT sensor.

// Note that older versions of this library took an optional third parameter to

// tweak the timings for faster processors.  This parameter is no longer needed

// as the current DHT reading algorithm adjusts itself to work on faster procs.

DHT dht(DHTPIN, DHTTYPE);

void setup() {

  Serial.begin(9600);

  Serial.println(F("DHTxx test!"));

  dht.begin();

}

void loop() {

  // Wait a few seconds between measurements.

  delay(2000);

  // 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();

  // Read temperature as Celsius (the default)

  float t = dht.readTemperature();

  // Read temperature as Fahrenheit (isFahrenheit = true)

  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).

  if (isnan(h) || isnan(t) || isnan(f)) {

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

    return;

  }

  // Compute heat index in Fahrenheit (the default)

  float hif = dht.computeHeatIndex(f, h);

  // Compute heat index in Celsius (isFahreheit = false)

  float hic = dht.computeHeatIndex(t, h, false);

  Serial.print(F("Humidity: "));

  Serial.print(h);

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

  Serial.print(t);

  Serial.print(F("°C "));

  Serial.print(f);

  Serial.print(F("°F  Heat index: "));

  Serial.print(hic);

  Serial.print(F("°C "));

  Serial.print(hif);

  Serial.println(F("°F"));

}

What do you need to Create this Project:

1. Arduino UNO R3
2. LED
3. DHT11 Temperature & Humidity Sensor
4. Bread Board
5. Jumping Wires

Purchase Products:

►DHT11: DHT11 Temperature & Humidity Sensor

►Arduino UNO R3: https://shorte.be/LP?$=68377 ►Bread Board: https://shorte.be/LP?$=68362

Jumping Wires: ►M to M: https://shorte.be/LP?$=68363 ►M to F: https://shorte.be/LP?$=68365

How to Upload Code in Arduino:

1. Open Arduino IDE.
2. Paste the code in Arduino IDE.
3. Compile the Code.
4. Upload the Code on Board.

How to Select Board:

1. Open Arduino IDE
2. Click on 'Tools' Option
3. Click on 'Board'
4. Select your Board

How to Select Port:

1. Open Arduino IDE
2. Click on 'Tools' Option
3. Click on 'Port'
4. Select your Port

How to Save Sketch in Computer:

1. Open Arduino IDE
2. Click on 'File' Option
3. Click on 'Save' Option
4. Select your Folder

How to 'Save as' Sketch:

1. Open Arduino IDE
2. Click on 'File' Option
3. Click on 'Save as' Option
4. Select your Folder

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