Smart Blind Stick Using Node MCU with Voice Alert

Abstract

In this research, Internet of Things (IoT) technology was used to create a low-cost smart stick for those who are blind or visually impaired. This Smart Walking Stick makes navigating and works easier and more comfortable for blind individuals by determining the distance between an object and a person. Previously, users used a regular stick to detect impediments, as a result, blind individuals are incapable of distinguishing objects in front of them which made them ineffective and made moving tough for a blind person. Hence, the concept of a “Smart Blind Stick” is offered as a solution to this severe problem. The ultrasonic sensor on our stick uses ultrasonic waves to find obstacles in front of us. The sensor transmits this information to the microcontroller when it detects impediments and it also estimates the distance between items. When the object is in the specified range then the buzzer rings. An Audio playback module is an additional advantage to the Smart Stick which enables the blind person to get alerted by hearing the sound as it is capable of recording different voices. This strategy is quite helpful for visually challenged people who frequently need assistance. A blind person will be helped to walk more comfortably and avoid danger.