Build a Dusk-to-Dawn Pet Activity Monitor with Arduino Uno and PIR Sensor

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

With this kit, you’ll construct a smart surveillance system that detects your pet’s nighttime roaming and automatically switches on a floodlight for two minutes — but never during the day, thanks to an LDR sensor. Perfect for monitoring restless dogs or curious cats after dark, or securing backyard areas where pets might trigger unwanted alarms. It’s a real-world application of embedded electronics that you can build in a single afternoon.

What You'll Build

You’ll assemble and program a complete pet activity monitor. The HC-SR501 PIR sensor watches for heat signatures, and when it spots movement after dusk, the Arduino signals a relay to turn on a 12V floodlight for exactly two minutes. Two LDRs measure ambient light and lock out daytime triggers, so the light only operates when it’s dark. The final circuit sits on a breadboard and is ready to install near a pet door or in a courtyard.

What You'll Learn

• Calibrating HC-SR501 PIR sensors for pet-sized heat signatures
• Using LDRs in voltage divider circuits to sense ambient light intensity
• Controlling high-voltage AC appliances safely with a 5V relay module
• Writing Arduino code to implement timed outputs, digital reads, and conditional logic

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11–12 students working on physics or computer science projects, B.Tech first-year ECE/EEE students diving into embedded systems, and participants in Smart India Hackathon or ATL Tinkering Labs. It’s also a great hands-on challenge for hobbyists building pet-friendly security solutions or intermediate learners wanting to combine sensor input, logic, and actuation in one build.

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.