IOT LPG leakage detector project using Arduino

Project Cost: 8,300

Project Code: 5150

Description of the IOT LPG detector project

LPG gas leaks are a leading cause of home and industrial fires, causing serious property damage and loss of life when they go undetected. The IoT LPG Leakage Detector project using Arduino continuously monitors LPG concentration in the surrounding air and sends real-time alerts — locally (buzzer + LCD), by SMS, and to a website — the moment a leak is detected.

This project uses IoT (Internet of Things) — a network of connected devices that communicate through sensors and the internet without needing constant human monitoring. Because alerts go out over the GSM mobile network rather than home Wi-Fi, it works reliably anywhere there’s mobile network coverage, which also makes it easy to demo at a college or school exhibition. It’s ideal for spaces where gas cylinders sit unattended, such as kitchens, hotels, or storage rooms.

Who This Project Is For

• Engineering and diploma students building a final-year or mini-project in embedded systems / IoT
• School students preparing a science exhibition project on gas safety or IoT
• Electronics hobbyists who want a working IoT project to learn Arduino + GSM/GPRS module integration

What’s Included

• Arduino Uno board
• LPG gas sensor (MQ series)
• GSM/GPRS modem
• 16×2 LCD display
• Buzzer
• Complete source code
• Circuit diagram
• Project report
• Presentation (PPT)
• Delivered as a readymade, fully working project within 7 days — with 6 months of guidance and support

How It Works

The LPG gas sensor continuously monitors the air for gas concentration and sends its readings to the Arduino microcontroller. When gas levels cross a safe threshold, the Arduino:

1. Turns on the buzzer to alert anyone nearby
2. Displays a “Leakage Detected” message on the LCD
3. Sends the sensor reading to a GSM/GPRS modem, which pushes the data to a website over GPRS and sends an SMS alert to a registered phone number

This means you can be alerted to a gas leak — by SMS and via the website — even when you’re not physically present.

Note: A SIM card with GSM/GPRS network coverage is required for the alerts to work.

Technical Specifications of LPG leakage detector using IOT

• LPG Gas Sensor — Detects gas concentration in the surrounding air
• Arduino Uno — Processes sensor data and controls the buzzer, LCD, and GSM modem
• 16×2 LCD Display — Shows real-time status and leak alerts
• Buzzer — Sounds a local alarm when a leak is detected
• GSM/GPRS Modem — Sends leak data to a website via GPRS and triggers an SMS alert

Video of the IOT LPG leakage detector project:

Applications, Advantages, and Future development of Arduino IOT LPG leakage detector project

This system can be installed in homes, hotels, restaurants, and LPG cylinder storage areas — anywhere a gas leak could go unnoticed.

Because it reports leaks by SMS and to a website over GPRS, corrective action can be taken quickly — even if no one is in the room — helping prevent loss of life and property.

Ways to extend this project:

• Add detection for other toxic or combustible gases
• Add a smoke/fire sensor for combined fire-and-gas safety monitoring
• Add a GPS module to include location data in the alert
• Display the live gas concentration percentage on the LCD (not currently implemented)

Question & Answers

Can we have the percentage of gas present in the premise also displayed on the LCD?

Answer: Not in the current version — it detects and alerts on leaks rather than displaying a live percentage. This can be added as a custom modification.

What all data is sent to the website?

Answer: The sensor reading is sent in real time. Location data can be added with an optional GPS module.

Does this kit include the source code and circuit diagram?

Answer: Yes — both are included with the kit.

Is a project report or PPT included?

Answer: Yes — a project report and presentation (PPT) are included.

Is this suitable for a final-year engineering or diploma project?

Answer: Yes — the kit includes source code, circuit diagram, project report, and PPT, covering what’s typically needed for final-year and diploma project submissions.

What if I get stuck while building or presenting this project?

Answer: You’ll receive a readymade, fully working project — so there’s no building required. For any guidance or queries, we provide 6 months of support.

How long does delivery take?

Answer: Delivered within 7 days of order.

Block Diagram of the IOT LPG leakage detector project: