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Interfacing Gas Sensor (MQ2) with Raspberry Pi 3 ๐Ÿ”ฅ


Interfacing Gas Sensor (MQ2) with Raspberry Pi 3 ๐Ÿ”ฅ

๐ŸŽฏ Objective

To detect gases like LPG, smoke, or methane using the MQ2 Gas Sensor and Raspberry Pi 3. Helpful for creating safety and fire alert systems.

๐Ÿงฐ Components Required

ComponentQuantity
Raspberry Pi 31
MQ2 Gas Sensor Module (with digital output)1
Jumper WiresAs required
Breadboard1

⚡ Circuit Connections

MQ2 Sensor PinConnect To
VCC5V (Raspberry Pi)
GNDGND (Raspberry Pi)
D0GPIO27 (Pin 13)

๐Ÿง  Python Code

import RPi.GPIO as GPIO
import time

GAS_SENSOR_PIN = 27

GPIO.setmode(GPIO.BCM)
GPIO.setup(GAS_SENSOR_PIN, GPIO.IN)

try:
    while True:
        if GPIO.input(GAS_SENSOR_PIN) == 0:
            print("๐Ÿ”ฅ Gas Detected!")
        else:
            print("✅ Air is Clean.")
        time.sleep(1)

except KeyboardInterrupt:
    GPIO.cleanup()

๐Ÿ“Š Output

  • Displays "๐Ÿ”ฅ Gas Detected!" when smoke or gas is present.
  • Shows "✅ Air is Clean." when the environment is safe.

๐Ÿ’ก Applications

  • Home safety systems
  • Industrial gas detection
  • Smart kitchen alerts

๐ŸŽฏ เค‰เคฆ्เคฆिเคท्เคŸ

MQ2 เคธेเคจ्เคธเคฐ เคตाเคชเคฐूเคจ เคงूเคฐ, เคเคฒเคชीเคœी, เค•िंเคตा เคฎिเคฅेเคจเคธाเคฐเค–्เคฏा เค—ॅเคธเคšे เคจिเคฆाเคจ เค•เคฐเคฃे เค†เคฃि เคฐाเคธ्เคชเคฌेเคฐी เคชाเคฏ 3 เคตเคฐ เค…เคฒเคฐ्เคŸ เคฆเคฐ्เคถเคตเคฃे.

๐Ÿงฐ เคฒाเค—เคฃाเคฐे เคธाเคนिเคค्เคฏ

เค˜เคŸเค•เคธंเค–्เคฏा
Raspberry Pi 31
MQ2 Gas Sensor Module1
เคœंเคชเคฐ เคตाเคฏเคฐ्เคธเค—เคฐเคœेเคจुเคธाเคฐ
เคฌ्เคฐेเคกเคฌोเคฐ्เคก1

⚡ เคธเคฐ्เค•िเคŸ เค•เคจेเค•्เคถเคจ

MQ2 Sensorเคœोเคกเคฃी
VCC5V (Raspberry Pi)
GNDGND (Raspberry Pi)
D0GPIO27 (Pin 13)

๐Ÿง  เคชाเค‡เคฅเคจ เค•ोเคก

import RPi.GPIO as GPIO
import time

GAS_SENSOR_PIN = 27

GPIO.setmode(GPIO.BCM)
GPIO.setup(GAS_SENSOR_PIN, GPIO.IN)

try:
    while True:
        if GPIO.input(GAS_SENSOR_PIN) == 0:
            print("๐Ÿ”ฅ เค—ॅเคธ เค†เคขเคณเคฒा เค†เคนे!")
        else:
            print("✅ เคนเคตा เคธ्เคตเคš्เค› เค†เคนे.")
        time.sleep(1)

except KeyboardInterrupt:
    GPIO.cleanup()

๐Ÿ“Š เค†เค‰เคŸเคชुเคŸ

  • "๐Ÿ”ฅ เค—ॅเคธ เค†เคขเคณเคฒा เค†เคนे!" เคนे เค•เคจ्เคธोเคฒเคตเคฐ เคช्เคฐिंเคŸ เคนोเคคे.
  • "✅ เคนเคตा เคธ्เคตเคš्เค› เค†เคนे." เค…เคธेเคนी เคช्เคฐिंเคŸ เคนोเคคे.

๐Ÿ’ก เค‰เคชเคฏोเค—

  • เค˜เคฐाเคธाเค ी เค…เค—्เคจिเคธुเคฐเค•्เคทा เคช्เคฐเคฃाเคฒी
  • เค‰เคฆ्เคฏोเค—ांเคธाเค ी เค—ॅเคธ เคกिเคŸेเค•्เคถเคจ
  • เคธ्เคตเคฏंเคชाเค•เค˜เคฐाเคคीเคฒ เคธ्เคฎाเคฐ्เคŸ เค…เคฒเคฐ्เคŸ

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