Published Paper Details:

Abstract This paper presents EchoLens: Vision Through Sound, an intelligent, low-cost assistive system designed to enhance mobility and safety for visually impaired individuals. The system integrates multiple sensors--ultrasonic, flame, water, temperature, and fall detection--interfaced with a PIC microcontroller. It provides real-time audio feedback through a voice processor and wireless monitoring via the Internet of Things (IoT) using an ESP8266 Wi-Fi module and the Blynk application. The stick detects obstacles, environmental hazards, and health conditions, issuing immediate alerts through both speech and remote notifications. Experimental results demonstrate accurate detection of obstacles up to 4 meters, fast response time, and reliable connectivity with mobile applications. By combining embedded control, sensor fusion, and IoT technologies, EchoLens improves user autonomy, reduces risk in unfamiliar environments, and bridges the gap between assistive hardware and smart communication systems. The project contributes toward inclusive innovation by transforming conventional mobility aids into interactive smart devices for social and health empowerment of the visually challenged.