MQ-6 Gas Sensor Module for Isobutane, Butane, Propane and LPG Detection

Description

What it is

The MQ-6 sensor module is a device designed to detect gases such as isobutane, butane, and propane LPG. This sensor is essential for domestic or industrial gas safety applications.

Features

• Detects isobutane, butane, and propane LPG

What it is for

The primary uses of the MQ-6 sensor include creating gas alarm systems. For example, you can connect an LED to pin 13 of the Arduino and use the sensor’s output value to trigger the alarm if gas levels exceed a certain threshold.

Tutorial: How to use MQ-6

The MQ-6 sensor is ideal for measuring gases such as isobutane, butane, propane, and LPG in your Arduino applications. Useful for beginners and intermediates.

What you need

• Arduino UNO or compatible
• 5V power cable
• 10kΩ pull-up resistor
• Perfect connector

Steps

1. 1. Connect the Arduino to the computer for uploading.
2. 2. Mount the MQ-6 sensor on a perfect connector.
3. 3. Connect pin A0 of the sensor to pin A0 of the Arduino.
4. 4. Connect a pull-up resistor (10kΩ) between the VCC pin of the sensor and GND of the Arduino.
5. 5. Connect GND of the sensor to GND of the Arduino.
6. 6. Load the code below.
7. 7. Wait 5 seconds for electronic equilibrium.
8. 8. Read the output values on the serial monitor.
9. 9. Check the datasheet for calibration parameters.

Example code

```
#include <Wire.h>

void setup() {
  Serial.begin(9600);
}

void loop() {
  int gasLevel = analogRead(A0);
  Serial.println(gasLevel);
  delay(1000);
}
```

Mini project

Create a simple gas alarm. Connect an LED to pin 13 of the Arduino and check if the output values exceed a certain threshold. If so, turn on the LED.

Common mistakes

• Do not read the output values immediately after loading.
• Forget to calibrate the sensor.
• Connect the sensor to the wrong digital pin.
• Omit the pull-up resistor.

Recommended accessories

• LED
• Reset button
• 220Ω resistor for the LED

Frequently asked questions

How to calibrate the sensor?
Check the datasheet for specific instructions.

Which gases can it detect?
Isobutane, butane, propane and LPG.

Does the sensor work with Arduino Nano?
Yes, but make sure the power supply is correct.

Can I use this sensor to measure oxygen?
No, the sensor is designed only for flammable gases.