Smart Ultrasound Blind Stick

Nearly 39 million people in the world are blind today. Most of them use a normal white-cane or blind-stick for assistance. In this instructable, we are going to make a smart electronic blind-stick that not only assist in walking blinds but also senses the surrounding environment and alerts if any object/obstacle comes too close.
Sound waves follow laws of reflection as that of light. This principle is used in SONAR based range detection and navigation. In this project, we are creating a miniature SONAR module which will fit in a selfie stick( we are modifying it to blind-stick).”

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