How to Use MQ2 Gas & Smoke Sensor with Arduino | Full Setup + Demo
🔥 How to Use the MQ2 Gas and Smoke Sensor with Arduino – Step-by-Step Guide 🔥
In today’s video, we’re diving into the MQ2 gas and smoke sensor, a versatile module that can detect a wide range of gases including LPG, methane, butane, hydrogen, alcohol, smoke, and propane.
We’ll walk through the hardware wiring, Arduino code, and a live demonstration using an Arduino Mega to read real-time data from the sensor and display results through the serial monitor.
What You'll Learn:
✅ What is the MQ2 sensor and how it works
✅ Gases it can detect (LPG, methane, butane, hydrogen, etc.)
✅ Wiring the sensor to an Arduino Mega
✅ Using the analog output for gas level readings
✅ Writing and uploading the Arduino code
✅ Real-time test using a cigarette lighter demo
✅ How to interpret sensor data through voltage and thresholds
⚠️ Important Note:
This sensor is for hobby and learning purposes only. Do NOT use it in real-life critical or industrial gas detection applications. The MQ2 is not calibrated or certified for safety use.
🧪 Tools & Parts Used in This Project:
🔹 MQ2 Gas Sensor – [Affiliate Link]
🔹 Arduino Mega – https://s.click.aliexpress.com/e/_okg...
🔹 Dupont Jumper Wires – https://s.click.aliexpress.com/e/_omG...
🔹 Full Arduino Code – https://app.arduino.cc/sketches/b0165...
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Thank you for watching – see you in the next video!
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