Abstract
Blind stick or white cane is introduced to blind people after the First World War as a mobility tool to detect the obstacles in the path of the user. This paper proposes an Arduino Nano based obstacle finding stick for visually-impaired people, which helps a blind person by detecting the obstacles using Ultrasonic sensors and android mobile application. It is able to inform the blind person about the circumstances & present condition of the path where he/she is walking. The main objective of this paper is to help a blind people to move more freely by using a reliable stick. The device consists of arduino nano, HC SR-04 ultrasonic sensor, HC-05 Bluetooth module, push buttons, 100nF ceramic capacitors and a 9V battery as the power source. And the android app is developed using MIT App Inventor 2.
Highlights
According to the famous philosopher and scientist Aristotle, our knowledge about the outside world depends on five sense organs and sight is one of those five organs
In recent times Electronic Travel Aids (ETAs) with sensors and sound systems are designed for improved navigation of blind people [2], [3]
The question that comes into our mind is that how this system can give idea about the surrounding by using GPS system
Summary
According to the famous philosopher and scientist Aristotle, our knowledge about the outside world depends on five sense organs and sight is one of those five organs. Blind stick is a special device used by visually disabled people for centuries. We proposed an advanced blind stick that allows visually challenged people to navigate using advanced technology like ultrasonic sensors & mobile application. The advantage of our project is that it can detect any obstacle with the help of ultrasonic sensors and it can provide correct location of obstacle by using the GPS system. It will help blind people when they are walking outside from their home. Besides that if any blind people get lost his/her relative can know about their location by using GPS based emergency SMS system feature
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