Smart Stick for Visually Challenged People

In this paper, we will make you familiar with a smart stick system for aiding blind people. The world has witnessed visually impaired people getting injured in accidents many times. There are approximately 2.2 billion blind people in the world as of 2021. Majority of them use a conventional white cane to aid in navigation. But one cannot identify the obstacles without touching them by their white cane. The proposed smart stick will help the visually impaired person by alerting them about the approaching obstacles like people and water during walking. The system acts like an artificial vision and alarm unit. The system consists ultrasonic sensor, vibrator, water sensor and the microcontroller. They receive the sensor signals and process them to short pulses to the Arduino pins where buzzers, vibrator and voice alarms are connected. The proposed model is affordable and suitable of the visually challenged people.