Gas Leak Detector with Auto Gas & Power Cutoff

Intelligent Arduino Gas Leak Detector with Automatic Gas & Power Cutoff System - A Complete Safety Project Kit

Introducing the ultimate solution for home and laboratory safety, the Automatic Gas Leak Safety System from Bigyan Project. Gas leaks are a silent but serious threat, and our meticulously designed project provides a robust, multi-layered defense. This is not just a simple detector; it's a complete, intelligent response system built around a powerful Arduino Uno microcontroller. When the highly sensitive MQ-2 sensor detects the presence of LPG, propane, or other flammable gases, the system initiates an instantaneous and automatic safety protocol. A heavy-duty MG90S servo motor physically rotates the gas cylinder knob to the off position, while a 5V relay simultaneously cuts off the main electrical supply, eliminating the risk of sparks that could lead to a catastrophic fire. Simultaneously, a loud alarm and a bright LED indicator activate to alert everyone in the vicinity. The inclusion of a ventilation fan helps to dissipate the leaked gas quickly. Designed by বিজ্ঞান প্রজেক্ট, this rechargeable, all-in-one kit is the perfect safety guardian for your kitchen and an invaluable educational tool for students and electronics enthusiasts looking for a meaningful project.

Product Specifications

Features

• Fully Automatic Operation: No manual intervention required. The system detects and acts on its own.
• Dual-Action Safety Cutoff: Automatically shuts off both the gas supply and the main power line for maximum safety.
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• Multi-Sensory Alerts: Provides both a loud audible alarm and a bright visual LED signal during a gas leak.
• Active Ventilation: An integrated fan starts automatically to help clear harmful gases from the area.
• Portable and Rechargeable: Powered by 18650 Li-Ion batteries with a modern Type-C charging port, ensuring it works even during a power outage.
• High-Quality Components: Uses a powerful MG90S metal gear servo and a reliable Arduino Uno board for long-lasting performance.
• Educational and Practical: An excellent hands-on STEM project for students that solves a critical real-world problem.

Applications / Use Cases

• Residential Kitchens using LPG cylinders
• School and College Science Laboratories
• Student Science Fair Projects and Competitions
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• Small Workshops or Garages where flammable gases are used
• RVs, Camper Vans, and Mobile Homes
• Small-scale Industrial Storage Areas

User Guide / How to Use

• Step 1: Initial Setup: Carefully mount the MG90S servo motor onto your gas cylinder's knob, ensuring it can turn the knob completely off.
• Step 2: Sensor Placement: Place the MQ-2 sensor module near the potential leak area, typically lower to the ground as LPG is heavier than air.
• Step 3: Power Connection: If you wish to use the power cutoff feature, have a qualified person connect the appliance's main power line through the relay module's COM and NO/NC terminals.
• Step 4: Power On: Turn on the project using the rocker switch. The system will initialize and a power indicator may light up.
• Step 5: System Ready: The device is now active and monitoring for gas leaks 24/7. No further action is needed.

Frequently Asked Questions (FAQs)

• Q: What types of gas can this device detect?
  A: The MQ-2 sensor is highly effective at detecting LPG, Methane, Butane, Propane, Hydrogen, Alcohol, and Smoke.
• Q: Is the servo motor strong enough to turn a tight gas cylinder knob?
  A: Yes, we use the MG90S Metal Gear Servo Motor specifically for its high torque, which is sufficient for turning standard domestic gas cylinder knobs.
• Q: How long does the battery last on a full charge?
  A: In standby mode, the battery can last for many hours. The exact duration depends on usage and how often the alarm and motors are triggered.
• Q: Can I reprogram the Arduino for other functions?
  A: Absolutely. This is a standard Arduino Uno board. You can connect it to your computer and modify the code using the Arduino IDE to customize its functions or sensitivity.
• Q: Is this project difficult to assemble?
  A: This product from Bigyan Project comes fully assembled and tested, ready to be deployed for your safety.

Challenges and Considerations

• Sensor Calibration: For optimal performance, the MQ-2 sensor may require a brief warm-up period upon startup and occasional calibration depending on the environment.
• Servo Placement: The physical mounting of the servo motor on the gas knob is critical. It must be secure and aligned correctly to ensure it can effectively turn the valve.
• Environmental Factors: High humidity, dust, or other strong fumes can sometimes affect the sensor's readings. It is best to place it in a relatively clean area.

Compatibility

• Compatible with most standard domestic LPG cylinder knobs and regulators.
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• The Arduino code is compatible with the standard Arduino IDE for easy modification.
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• The power cutoff relay can be integrated with most single-phase home appliances up to 10A.

Future Enhancement Options

• GSM Module Integration: Add a SIM800L or similar module to send SMS alerts to your phone during a gas leak.
• LCD/OLED Display: Connect an I2C display screen to show real-time gas concentration levels and system status.
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• IoT Connectivity: Integrate an ESP8266 or ESP32 to connect the system to the internet, allowing for remote monitoring and notifications via a mobile app.
• Voice Alerts: Add an APR33A3 voice module to play pre-recorded warning messages in addition to the buzzer.

Benefits

• 24/7 Peace of Mind: Continuous, automated monitoring provides constant protection for you and your family.
• Prevents Fire Hazards: By cutting off both the gas and the electricity, it drastically reduces the risk of fire and explosions.
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• Excellent Learning Tool: Offers invaluable hands-on experience with sensors, microcontrollers, and actuators.
• Cost-Effective Safety: Provides a comprehensive safety solution at a fraction of the cost of commercial integrated systems.

Conclusion

Don't leave safety to chance. The Arduino Gas Leak Safety System is an indispensable tool for modern living, blending practical protection with profound educational value. It's a testament to how technology can be used to safeguard our lives. By choosing this product, you are not just buying a device; you are investing in a comprehensive safety net for your home and a brilliant learning opportunity. Trust Bigyan Project to bring you innovative and reliable solutions that matter. Order yours today and secure your peace of mind.

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