Home Security Motion Sensor Kit v2 – Build a PIR Intrusion Alarm with Timestamp Logging on Arduino

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

Protect your home, classroom, or tinkering lab with a working security system you build yourself. This kit turns an Arduino Uno into a vigilant sentry – a PIR sensor watches for motion, a buzzer and LEDs sound the alarm instantly, and every detected event is stamped with the exact time using the DS3231 real-time clock. All logged data gets stored in EEPROM so you can retrieve a complete intrusion history through the Arduino serial monitor later. It’s real home security made simple enough for a beginner, yet deeply educational.

What You'll Build

You’ll assemble a functional motion-sensing alarm on a breadboard. When someone (or something) moves within the PIR sensor’s range, the red LEDs flash and the buzzer wails. At the same moment, the current date and time are written to the Arduino’s internal memory. After the event, you can plug the Arduino into any computer, open the Serial Monitor, and view a log of all triggered times – making this not just an alarm but a powerful investigative tool. By the end of the 2-3 hour build, you’ll own a device that shows exactly when each intrusion happened.

What You'll Learn

• Interfacing a HC-SR501 PIR motion sensor with Arduino and adjusting its sensitivity and delay
• Reading accurate time from a DS3231 real-time clock module
• Writing timestamped event data to the Arduino’s internal EEPROM memory
• Retrieving and displaying stored logs through the serial monitor for analysis

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for young electronics explorers aged 5-15, this kit is ideal for students at ATL Tinkering Labs or those working on CBSE/ICSE school projects (Class 7–10). It’s also a great first step into Arduino for hobbyists curious about home security, sensor integration, and data logging. Parents can use it for a supervised weekend project that teaches real-world engineering – from circuit assembly to reading serial logs, all without any soldering.

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.