What are the best sensors to be used in smart stick (cane) for blind people to avoid obstacle such as walls and holes? - Quora

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What are the sensors used for an obstacle avoidance robot? Which one is the best? - Quora

Usability and Design Guidelines of Smart Canes for Users with Visual Impairments

How to make a smart stick for blind people to tell direction (move right or left) after detecting an object in front of a blind person by ultrasonic sensor - Quora

Why do blind people use a walking stick? - Quora

Leading the blind

Smart Blind Stick for Visually Impaired People

What are the best sensors to be used in smart stick (cane) for blind people to avoid obstacle such as walls and holes? - Quora

Smart stick detects obstacles in front of the blind.

Inventions, Free Full-Text

DIY Smart Cane Using Arduino

The components of the Smart Cane.

Why do blind people use a walking stick? - Quora

Smart Blind Stick Using Arduino With Ultrasonic Sensor and IR Sensor

What are the problems faced by the blind using a stick or cane? - Quora