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Design of a Wirelessly-Updated Digital Clock with Android Interface

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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Year of Publication: 2020
Authors:
E. O. Idiaghe, R. I. Osaze, E. Osazee
10.5120/ijca2020920641

E O Idiaghe, R I Osaze and E Osazee. Design of a Wirelessly-Updated Digital Clock with Android Interface. International Journal of Computer Applications 175(15):6-10, August 2020. BibTeX

@article{10.5120/ijca2020920641,
	author = {E. O. Idiaghe and R. I. Osaze and E. Osazee},
	title = {Design of a Wirelessly-Updated Digital Clock with Android Interface},
	journal = {International Journal of Computer Applications},
	issue_date = {August 2020},
	volume = {175},
	number = {15},
	month = {Aug},
	year = {2020},
	issn = {0975-8887},
	pages = {6-10},
	numpages = {5},
	url = {http://www.ijcaonline.org/archives/volume175/number15/31527-2020920641},
	doi = {10.5120/ijca2020920641},
	publisher = {Foundation of Computer Science (FCS), NY, USA},
	address = {New York, USA}
}

Abstract

This paper presents the design of a digital clock, while providing an easy and convenient means of updating the time, and/or any other message that may be displayed. The aim was to design and also introduce a user-friendly update mechanism through creating input methods – using a 4x4-numeric keypad for data input, establishing communication protocol with Bluetooth and output method using a liquid crystal display. The design incorporated both hardware and software in achieving this aim, with the hardware consisting of LCD, LEDs, RTC, HC-05 Bluetooth module, and a 4x4-numeric keypad. The software is handled by a ubiquitous microcontroller – ATmega16A, programmed in C++, as well as a generic HC-05 Android Bluetooth Application for data input (in addition to the hardware means of update – keypad). Hence, this design introduced convenience (user-friendliness) as compared to clocks which are manually updated. The overall design had percentage accuracy and error of 99.17 and 0.8 respectively.

References

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Keywords

Microcontroller, LCD, Digital Clock, RTC, Android App, Bluetooth.