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All Journal Greenation International Journal of Engineering Science
Liu Zhijian
Hubei University of Technology, Wuhan
Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Design and Manufacture of Digital Watches with Sound Output for the Blind Using the Atmega8535 Microcontroller Liu Zhijian
Greenation International Journal of Engineering Science Vol. 1 No. 1 (2023): (GIJES) Greenation International Journal of Engineering Science (March 2023)
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v1i1.3

Abstract

The purpose of making this device as a media introduction is to facilitate people with visual impairments in knowing time. The device is composed of three main parts: (1). Input section, the main component of the five buttons. (2). Microcontroller parts, with the main component ATMega8535, in this tool ATMega8535 enabled to do the reading keystrokes (3). Voice Section IC chip with the major components and modules WTV020SD ISD25120 voice, in these devices and modules ISD25120 WTV020SD used as a source of sound, according to the address data received from the microcontroller output ATMega8535. Especially for WTV020SD just to make the call to prayer. From the results of the testing that has been done, the device is capable of producing sound hours, where the sound of hours is needed by people with visual impairments who do not have the ability to look at the clock or wristwatch, then this device if pressed the button will emit a sound and when a call to prayer comes in, clock This will sound the call to prayer can help people with visual impairment to remind would pray. From this test it can be concluded that the manufacture of the device is not in accordance with the plan, because (1). There are some voices that are less obvious to distinguish other sounds, (2). Battery life is not too long, (3). The tool is still in the form of a fairly large. The cause of the damage (1). Errors in the sound recording process, (2). The use of components that are large enough to drain the battery, (3). Limited components sold in the market.
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