An Intelligent Haptic-Audio Guidance System for Enhancing Mobility of Disabled Users

Visually impaired individuals face significant challenges in navigating unfamiliar environments due to their inability to detect nearby obstacles. To address this issue, we propose a Smart Stick, an affordable and effective assistive mobility device aimed at enhancing the independence and safety of blind users. The device utilizes ultrasonic sensors to continuously monitor the path ahead, and upon detecting obstacles, it activates a vibration motor to provide haptic feedback, allowing the user to take appropriate precautions. In addition to aiding navigation, the Smart Stick is equipped with an SOS emergency button a crucial feature for speech-impaired users. When pressed, it triggers a speaker feedback as an “Emergency help” audio message, allowing users to signal distress and seek help in critical situations. The core of the system is an Arduino Uno microcontroller that processes sensor data and coordinates the vibration and audio outputs in real time. The device is lightweight, power-efficient, and ergonomically designed for user comfort and long-term battery usage. By integrating tactile and auditory feedback along with an emergency communication feature, the Smart Stick significantly improves mobility, safety, and quality of life for users with visual, hearing and speech impairments.