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Interfacing Raspberry Pi 3 with a Temperature Sensor (DHT11) - English & Marathi

 Introduction

The DHT11 sensor is a simple and popular sensor used to measure temperature and humidity. In this tutorial, we will learn how to interface the DHT11 sensor with Raspberry Pi 3 and display the temperature and humidity readings on the terminal.

DHT11 рд╕ेрди्рд╕рд░ рддाрдкрдоाрди рдЖрдгि рдЖрд░्рдж्рд░рддा рдоोрдЬрдг्рдпाрд╕ाрдаी рд╡ाрдкрд░рд▓ा рдЬाрдгाрд░ा рдПрдХ рд╕ोрдкा рдЖрдгि рд▓ोрдХрдк्рд░िрдп рд╕ेрди्рд╕рд░ рдЖрд╣े. рдпा рдЯ्рдпूрдЯोрд░िрдпрд▓рдордз्рдпे, рдЖрдкрдг DHT11 рд╕ेрди्рд╕рд░рд▓ा Raspberry Pi 3 рд╢ी рдХрд╕े рдЬोрдбाрдпрдЪे рдЖрдгि рдЯрд░्рдоिрдирд▓рд╡рд░ рд╡ाрдЪрди рдХрд╕े рдк्рд░рджрд░्рд╢िрдд рдХрд░ाрдпрдЪे рд╣े рд╢िрдХू.


Components Required | рдЖрд╡рд╢्рдпрдХ рдШрдЯрдХ:

  1. Raspberry Pi 3
  2. DHT11 Temperature and Humidity Sensor
  3. 10K╬й Resistor
  4. Jumper Wires
  5. Breadboard

Circuit Diagram | рд╕рд░्рдХिрдЯ рдЬोрдбрдгी:

Connections:

  • DHT11 VCC → 3.3V (Pin 1)
  • DHT11 GND → GND (Pin 6)
  • DHT11 Data → GPIO4 (Pin 7)
  • 10K╬й resistor between VCC and Data pin

Python Code | рдкाрдпрдерди рдХोрдб:

import Adafruit_DHT

sensor = Adafruit_DHT.DHT11
pin = 4  # GPIO4

humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)

if humidity is not None and temperature is not None:
    print(f"Temperature: {temperature}°C")
    print(f"Humidity: {humidity}%")
else:
    print("Failed to retrieve data from sensor")

Explanation | рд╕рдордЬाрд╡рдгी:

  1. We use the Adafruit_DHT library to read data from the sensor.
  2. The sensor is connected to GPIO4 on the Raspberry Pi.
  3. The program continuously reads the temperature and humidity values and displays them.

рдЖрдкрдг Adafruit_DHT рд▓ाрдпрдм्рд░рд░ीрдЪा рд╡ाрдкрд░ рдХрд░ूрди рд╕ेрди्рд╕рд░рдХрдбूрди рдбेрдЯा рд╡ाрдЪрддो. рд╕ेрди्рд╕рд░ GPIO4 рд╢ी рдЬोрдбрд▓ेрд▓ा рдЖрд╣े рдЖрдгि рддो рддाрдкрдоाрди рдЖрдгि рдЖрд░्рдж्рд░рддेрдЪ्рдпा рдоूрд▓्рдпांрдЪे рд╡ाрдЪрди рдХрд░рддो.


Running the Code | рдХोрдб рдЪाрд▓рд╡िрдгे:

  1. Install the required library:
    pip install Adafruit_DHT
    
  2. Save the Python script as dht11.py
  3. Run the script:
    python dht11.py
    

Output | рдЖрдЙрдЯрдкुрдЯ:

Temperature: 25°C
Humidity: 60%

Conclusion | рдиिрд╖्рдХрд░्рд╖:

Now, you have successfully interfaced the DHT11 temperature and humidity sensor with the Raspberry Pi 3! ЁЯОЙ

рдЖрддा рддुрдо्рд╣ी DHT11 рддाрдкрдоाрди рдЖрдгि рдЖрд░्рдж्рд░рддा рд╕ेрди्рд╕рд░рд▓ा Raspberry Pi 3 рд╕ोрдмрдд рдпрд╢рд╕्рд╡ीрдкрдгे рдЬोрдбрд▓े рдЖрд╣े! ЁЯОЙ


Stay tuned for the next sensor tutorial! ЁЯЪА | рдкुрдвीрд▓ рд╕ेрди्рд╕рд░ рдЯ्рдпूрдЯोрд░िрдпрд▓рд╕ाрдаी рддрдпाрд░ рд░рд╣ा! ЁЯЪА

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