Mini MQ-4 Gas Sensor Module

Description

What is it The Mini MQ-4 Gas Sensor Module is a gas sensor module for Arduino, perfect for beginner and intermediate makers. It is specifically designed to detect methane in domestic or industrial settings. Features Gas sensor MQ-4 Detects methane Low cost and easy to use What it’s for The MQ-4 module is ideal for creating domestic alarm systems that send a notification when excessive methane is detected. It is compatible with Arduino and ESP. Tutorial: How to use MQ-4 Gas Sensor Module The MQ-4 module is a low-cost gas sensor ideal for projects requiring methane detection. It is perfect for beginners and intermediate makers. What you need Arduino Uno or compatible USB cable to connect to PC Steps Connect the MQ-4 module to the VCC, GND, AO pins of the Arduino using jumper wires. Open Arduino IDE and install the Adafruit_ADS1015 library if not already present. Upload the example sketch provided with the library to test the module. Modify the sketch to read values from the MQ-4 sensor and display them on the serial monitor. Analyze the received data and calibrate the sensor if necessary, referring to the MQ-4 sensor datasheet. Example code void setup() { Serial.begin(9600); } void loop() { int val = analogRead(A0); // Read from the AO pin connected to the sensor Serial.println(val); // Send the value to the serial monitor } Mini-project Create a domestic alarm system that sends a notification when excessive methane is detected. Common errors Incorrectly connect the VCC, GND, AO pins. Forget to install the necessary library to read analog values. Ignore the sensor calibration process. Use a wide range of concentrations without verifying the sensor specifications in the datasheet. Recommended accessories Arduino Uno R3 USB A-Micro B Adafruit_ADS1015 library Frequently asked questions How can I calibrate the MQ-4 module? Calibrate by exposing the sensor to a known concentration of methane and set this value as a reference in your code. Refer to the MQ-4 sensor datasheet for specific details. What is the concentration range it can measure? Refer to the MQ-4 sensor datasheet for accurate concentration range information.