Virtual Booth

This project introduces the "Travel Shield – Portable Security System," an innovative, battery-powered security device built on the micro:bit platform. Designed to provide a low-cost, user-friendly, and highly portable solution, it addresses the critical need for personal safety and asset protection in unfamiliar environments such as hotel rooms, dormitories, or shared spaces. The system integrates multiple sensors—including ultrasonic, motion (PIR), sound, and gas/smoke—to create a multi-layered detection network. Its core novelty lies in a priority-based threat detection algorithm, ensuring the most critical alarms, such as smoke detection, are processed and broadcast immediately.

The system's usefulness is twofold. Firstly, it offers a real-time, local response through an audible buzzer and an on-board LCD display that clearly identifies the detected threat (e.g., "SMOKE," "MOTION!"). Secondly, it features a unique dual-unit communication system, utilizing the micro:bit's radio function to send instant, real-time alerts to a separate portable receiver unit. This allows users to be notified of security events even when out of immediate earshot. The receiver unit is also equipped with a message recall feature, allowing the user to review the last warning by pressing a button. This simple and effective design enhances peace of mind, making robust security accessible to a broader audience without the complexity or cost of traditional systems. This project demonstrates a practical application of embedded systems and IoT principles for real-world problem-solving.