Make Your Own smart Gas Leak Detector with Arduino

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In this video, I’ll show you how I built a smart Arduino-based gas leak detector that not only detects gas leaks and sounds an alarm — but also automatically turns off the gas regulator and activates an exhaust fan for maximum safety. Perfect for use in kitchens, workshops, or any enclosed area, this DIY project helps prevent gas-related accidents using simple yet effective automation.

🚀 Built using an MQ2 gas sensor, relay module, servo motor, and other low-cost components, this system can make your home or lab much safer.

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⚙️Components Required:
Arduino Nano
MQ2 Sensor
led
buzzer
servo motor
single channel relay module
exhaust fan
18650 battery with battery container
push switch

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🧠 What You’ll Learn:
- How to detect gas leaks with an MQ2 sensor.
- How to use relays to control appliances like fans.
- Automating gas shutoff using a servo motor.
- Real-world application of Arduino in safety systems.

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