MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module

Name: MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module
SKU: EK531
Price: 80.00 EGP
Availability: OutOfStock

SKU: EK531 Category: Sensors Tag: Sensors

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Description

If you want to detect methane gases with your projects, you will need sensors. If you need any data on the sensitive material then, the MQ-4 High Sensitivity Gas Methane (CNG) Detector Gas Sensor Module is a quite good solution. This is a simple to use MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module which can sense the presence of Compressed Natural Gas(CNG), methane(CH4), etc in the air. The module uses our MQ-4 sensor. It simplifies the interface to the odd pin spacing of the sensor and provides the interface through standard 4 x 0.1″ header pins. It provides an analog output corresponding to the concentration of the gases in the air and an easy-to-use digital output. The onboard potentiometer can be used to set the maximum gas concentration beyond which the digital output gets triggered. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm. Just power the module with 5V set the threshold and you can start getting the gas concentration of the air around the sensor! An onboard LED signals the presence of any gas. The digital output can be easily interfaced with microcontrollers and other circuits. The analog output can be hooked up to an ADC of a microcontroller to get a wide range of sensor readings. This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. <hr /> <h4>Features :</h4> <ol> <li>Signal output indicator</li> <li>Dual Signals output (analog output and TTL output)</li> <li>The TTL output signal is low level, allows to connect with SCM directly</li> <li>Analog output 0~5V voltage</li> <li>High sensitivity</li> <li>Long working life and stable performance</li> <li>Quick response and recovery.</li> </ol> <hr /> <h4>Package Includes :</h4> 1 x MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module

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Pin Connections

1 Table

Pin Connections Table 1

Board	Sensor Pin	Connection
MQ-4	VCC/GND/AOUT	5V / GND / board analog pin (see per-board note)

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MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module

7 Examples • C/C++ | Boards: Arduino Uno, Arduino Nano, Arduino Mega, ESP32, ESP8266, STM32, Raspberry Pi Pico

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MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module - Arduino Uno

MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module - Arduino Nano

MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module - Arduino Mega

MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module - ESP32

MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module - ESP8266

MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module - STM32

MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module - Raspberry Pi Pico

📄 File: mq-4_high_sensitivity_gas_methane_(cng)_detector_sensor_module_-_arduino_uno.inoArduino Uno

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5// Analog pin: A0 on Arduino Uno (ADC range 0-1023, reference 5.0V)

6#define MQ_PIN A0

8void setup() {

9 Serial.begin(115200);

10 Serial.println("Warming up sensor (needs ~20-60s to stabilize)...");

11}

13void loop() {

14 int raw = analogRead(MQ_PIN);

15 float voltage = raw * 5.0 / 1023.0;

17 Serial.print("MQ-4 (methane/CNG) raw ADC: "); Serial.print(raw);

18 Serial.print(" Voltage: "); Serial.print(voltage);

19 Serial.println(" V (higher = more gas detected; calibrate a clean-air baseline for real ppm)");

21 delay(1000);

22}

📄 File: mq-4_high_sensitivity_gas_methane_(cng)_detector_sensor_module_-_arduino_nano.inoArduino Nano

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5// Analog pin: A0 on Arduino Nano (ADC range 0-1023, reference 5.0V)

6#define MQ_PIN A0

8void setup() {

9 Serial.begin(115200);

10 Serial.println("Warming up sensor (needs ~20-60s to stabilize)...");

11}

13void loop() {

14 int raw = analogRead(MQ_PIN);

15 float voltage = raw * 5.0 / 1023.0;

17 Serial.print("MQ-4 (methane/CNG) raw ADC: "); Serial.print(raw);

18 Serial.print(" Voltage: "); Serial.print(voltage);

19 Serial.println(" V (higher = more gas detected; calibrate a clean-air baseline for real ppm)");

21 delay(1000);

22}

📄 File: mq-4_high_sensitivity_gas_methane_(cng)_detector_sensor_module_-_arduino_mega.inoArduino Mega

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5// Analog pin: A0 on Arduino Mega (ADC range 0-1023, reference 5.0V)

6#define MQ_PIN A0

8void setup() {

9 Serial.begin(115200);

10 Serial.println("Warming up sensor (needs ~20-60s to stabilize)...");

11}

13void loop() {

14 int raw = analogRead(MQ_PIN);

15 float voltage = raw * 5.0 / 1023.0;

17 Serial.print("MQ-4 (methane/CNG) raw ADC: "); Serial.print(raw);

18 Serial.print(" Voltage: "); Serial.print(voltage);

19 Serial.println(" V (higher = more gas detected; calibrate a clean-air baseline for real ppm)");

21 delay(1000);

22}

📄 File: mq-4_high_sensitivity_gas_methane_(cng)_detector_sensor_module_-_esp32.inoESP32

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5// Analog pin: 34 on ESP32 (ADC range 0-4095, reference 3.3V)

6// SAFETY: this module can output up to 5V, but ESP32's ADC input max is 3.3V.

7// Power the module from the board's 3.3V pin instead of 5V, OR add a simple

8// resistor voltage divider on the analog output before wiring it in.

9#define MQ_PIN 34

11void setup() {

12 Serial.begin(115200);

13 Serial.println("Warming up sensor (needs ~20-60s to stabilize)...");

14}

16void loop() {

17 int raw = analogRead(MQ_PIN);

18 float voltage = raw * 3.3 / 4095.0;

20 Serial.print("MQ-4 (methane/CNG) raw ADC: "); Serial.print(raw);

21 Serial.print(" Voltage: "); Serial.print(voltage);

22 Serial.println(" V (higher = more gas detected; calibrate a clean-air baseline for real ppm)");

24 delay(1000);

25}

📄 File: mq-4_high_sensitivity_gas_methane_(cng)_detector_sensor_module_-_esp8266.inoESP8266

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5// Analog pin: A0 on ESP8266 (ADC range 0-1023, reference 3.3V)

6// SAFETY: this module can output up to 5V, but ESP8266's ADC input max is 3.3V.

7// Power the module from the board's 3.3V pin instead of 5V, OR add a simple

8// resistor voltage divider on the analog output before wiring it in.

9#define MQ_PIN A0

11void setup() {

12 Serial.begin(115200);

13 Serial.println("Warming up sensor (needs ~20-60s to stabilize)...");

14}

16void loop() {

17 int raw = analogRead(MQ_PIN);

18 float voltage = raw * 3.3 / 1023.0;

20 Serial.print("MQ-4 (methane/CNG) raw ADC: "); Serial.print(raw);

21 Serial.print(" Voltage: "); Serial.print(voltage);

22 Serial.println(" V (higher = more gas detected; calibrate a clean-air baseline for real ppm)");

24 delay(1000);

25}

📄 File: mq-4_high_sensitivity_gas_methane_(cng)_detector_sensor_module_-_stm32.inoSTM32

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5// Analog pin: PA0 on STM32 (ADC range 0-4095, reference 3.3V)

6// SAFETY: this module can output up to 5V, but STM32's ADC input max is 3.3V.

7// Power the module from the board's 3.3V pin instead of 5V, OR add a simple

8// resistor voltage divider on the analog output before wiring it in.

9#define MQ_PIN PA0

11void setup() {

12 Serial.begin(115200);

13 Serial.println("Warming up sensor (needs ~20-60s to stabilize)...");

14}

16void loop() {

17 int raw = analogRead(MQ_PIN);

18 float voltage = raw * 3.3 / 4095.0;

20 Serial.print("MQ-4 (methane/CNG) raw ADC: "); Serial.print(raw);

21 Serial.print(" Voltage: "); Serial.print(voltage);

22 Serial.println(" V (higher = more gas detected; calibrate a clean-air baseline for real ppm)");

24 delay(1000);

25}

📄 File: mq-4_high_sensitivity_gas_methane_(cng)_detector_sensor_module_-_raspberry_pi_pico.inoRaspberry Pi Pico

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5// Analog pin: 26 on Raspberry Pi Pico (ADC range 0-4095, reference 3.3V)

6// SAFETY: this module can output up to 5V, but Raspberry Pi Pico's ADC input max is 3.3V.

7// Power the module from the board's 3.3V pin instead of 5V, OR add a simple

8// resistor voltage divider on the analog output before wiring it in.

9#define MQ_PIN 26

11void setup() {

12 Serial.begin(115200);

13 Serial.println("Warming up sensor (needs ~20-60s to stabilize)...");

14}

16void loop() {

17 int raw = analogRead(MQ_PIN);

18 float voltage = raw * 3.3 / 4095.0;

20 Serial.print("MQ-4 (methane/CNG) raw ADC: "); Serial.print(raw);

21 Serial.print(" Voltage: "); Serial.print(voltage);

22 Serial.println(" V (higher = more gas detected; calibrate a clean-air baseline for real ppm)");

24 delay(1000);

25}

Project Notes:

Analog methane/CNG sensor.

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MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor Module متوفر الآن في متجر إكوسترا للإلكترونيات، ضمن قسم Sensors، بسعر 80,00 EGP. كود المنتج لدينا: EK531. المنتج غير متوفر حالياً — تواصل معنا عبر واتساب لمعرفة موعد توفره القادم.

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