Smart Blind Stick: designing an intelligent and assistive device for visually impaired with obstacle detection and navigation assistance

The Smart Blind Stick is an innovative assistive device designed using Internet of Things (IoT) technology to improve the quality of life for visually impaired individuals. Navigating unfamiliar environments poses a significant challenge for the blind, as traditional white canes are unable to detect certain obstacles such as overhead barriers, water puddles, or changes in lighting. This smart stick addresses these limitations by incorporating advanced sensors and connectivity features aimed at enhancing safety, mobility, and independence. The device features ultrasonic sensors for obstacle detection, a water sensor for wet surface awareness, a light sensor for low-light conditions, and a GPS module for real-time location tracking. These components work together to provide the user with immediate feedback through vibrations or alerts. The system is built on a microcontroller platform such as Arduino or Node MCU and uses IoT connectivity for live monitoring and emergency support via mobile applications. Developed using the Agile methodology, the Smart Blind Stick meets key functional requirements such as obstacle avoidance, environmental sensing, and location sharing. It enables visually impaired users to navigate more confidently in various environments. In conclusion, this device demonstrates how the integration of IoT and embedded systems can provide a practical and scalable solution to enhance the independence and safety of people with vision impairments.