Build a Night-Only LPG Gas Alarm with Arduino Uno – Protect Your Kitchen While You Sleep

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Every year, undetected LPG leaks after dark cause kitchen fires while families sleep. This kit lets you build a smart alarm that sounds only at night, using an MQ-2 gas sensor and a light-dependent resistor. The dual-condition logic ensures you’re alerted only when it truly matters—during the hours you’re most vulnerable.

What You'll Build

You’ll assemble a breadboard circuit around an Arduino Uno. The MQ-2 continuously monitors for cooking gas, but the buzzer stays silent unless the LDR confirms the room is dark. This prevents false alarms from daytime cooking. The finished device sits on your kitchen shelf, ready to wake you if a gas leak starts after you’ve gone to bed.

What You'll Learn

• Read analog sensor values from an MQ-2 and LDR using Arduino
• Write conditional code: sound the buzzer only if gas is present AND it’s dark
• Build a complete circuit on a 400-point breadboard
• Adjust sensor thresholds for real-world kitchen conditions

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

School students (age 10+) exploring CBSE science or AI curricula will love the hands-on safety logic. ATL Tinkering Labs across India can use it for social-impact projects. College freshers in B.Tech ECE or EEE streams get a practical introduction to sensor fusion. It’s also an ideal weekend project for a parent and child to build together, sparking conversations about home safety.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.