Abstract
Visually challenged people often face problems while navigating around the places and on roads. Moving along the unknown terrain is a great challenge to such people and therefore keeping these things in mind, the smart stick has been designed to minimize the difficulties of visually challenged people. In this paper, a smart stick based on Traffic Light Crossing (TLC) Algorithm has been proposed for the navigation and guidance of visually challenged individuals while walking through roads and crossing traffic lights. Navigation and guiding can be done with the help of a Global Positioning System (GPS). The smart stick is featured with obstacle detection using ultrasonic sensor, traffic light color detection using color sensor, buzzer based alert system and GSM (Global System for Mobile) for message alert and location sharing. All these modules have been embedded into the ATmega328P microcontroller. The stick is proposed to be embedded with voice recognition and GPS guiding system in future.
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