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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PDF) Low Cost Smart Stick for Blind and Partially Sighted People

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

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Smart Blind Stick Project using Arduino and Sensors

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

Inventions, Free Full-Text

The components of the Smart Cane.