It's cheap and easy to make without the need of much soldering. I used an ultrasonic sensor with an Arduino for detecting the obstacles. (iii) Vibration sensor (buzzer) ( Figure 5): it is an auditory signaling device that can be electromechanical, mechanical, or piezoelectric in nature 38,39. The cane can automatically detect an obstacle and give the user a feedback response by vibrating the walking stick and giving a warning sound. Using this Arduino smart cane, a visually impaired person can walk without anyone's help. Since these buzzers are separately-excited oscillation, they accommodate flexible designs as music. Many Applications can created by measuring Vibration level, but sensing vibration accurately is a difficult job. TDK's piezoelectric buzzers are sounding bodies that use unimorph piezoelectric vibration plates and feature small sizes, low voltages, and loud sound volumes, as well as high performance and a design that allows for easy mounting on circuits. I wanted it to be very cheap and easily replicable so even a child can easily make it from scratch in a couple of hours. Active piezo buzzer 1 pc General We will learn how to connect vibration sensor module, active piezo buzzer to Arduino board and use it. It was that evening that I came up with the smart cane. I realized that I could use technology to assist people like him. I was able to help him, and at that moment that I had an epiphany. One day while I was out walking, I saw a blind person having a difficult time walking down a busy street. This Arduino smart cane can assist with walking alone in new environments by taking inputs through an obstacle sensor (ultrasonic sensor) and providing feedback to the person through haptics (a vibration motor). I wanted to make something to help the visually impaired, so I created an open-source Arduino project for a smart cane.
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