This document presents a visible light communication system for transferring text and text files between two computers. It begins with an introduction to visible light communication and why LEDs are used. It then shows the block diagram and process for transferring text data and a text file between two computers connected by an Arduino-based visible light communication system. It concludes that visible light communication could revolutionize consumer networking due to its efficiency and affordability.

1. Txt And Txt file transfer between two Computers using
Visible Light Communication System
Presented by:
Shuvo Raj Paul
Roll : 1003110
EEE, KUET
6/29/2015 1
Khulna University of Engineering & Technology
Department of Electrical & Electronic Engineering
Supervised by
Dr. M. A. Samad
Professor,
Department of Electrical & Electronic Engineering,
Khulna University of Engineering and Technology,
Khulna, Bangladesh.

2. Contents
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Introduction.
Visible light and its spectrum.
Motivation: Why visible light is used for communication purpose?
Why LED is used for visible light communication.
Simple application of visible light communication.
Block diagram explaining the communication between two comput
Txt. Data transfer between two computers
Txt file transfer between two computers
Circuit diagram and its pictorial view
Drawbacks
Suggested Future Work
Conclusion.

3. What is
“Visible Light Communication” ?
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 The visible light communication (VLC) refers to
the communication technology which utilizes the
visible light source as a signal transmitter, the air as
a transmission medium, and the appropriate
photodiode as a signal receiving component.

4. Visible Light
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Visible Light SpectrumVisible Light Spectrum
 Visible light is thus by definition comprised of visually-
perceivable electromagnetic waves.
 The visible spectrum covers wave lengths from 380 nm to
750 nm.

5. Visibility
Bandwidth
Security
 Power Consumption
EMI and RFI
Effect on human body
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Why vlc ???

6. A Simple application of visible light communication
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A Simple application of visible light communication

7. 6/29/2015 7
Block Diagram To explain the operation of visible light
communication between Two Computer
Transmitting
Computer
Arduino
UNO
Light Emitting
Diode
Photodiode
Arduino
UNO
Receiving
Computer
Sending END
(Free Space)
Receiving END

8. Txt. Data transfer BETWEEN TWO computers
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9. Txt file transfer between two computers
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 Txt file creation in the transmitter computer

10. Txt file transfer between two computers (cont.)
 Received file location selection
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11. Txt file transfer between two computers (cont.)
 TXT file selection in the transmitter PC
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12. Txt file transfer between two computers (cont.)
 Received file in the receiver PC at predefined
location.
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SHUVO RAJ PAUL ROLL: 1003110 SEC: B DEPARTMENT:EEE

13. Circuit diagram and its pictorial view
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 Circuit Diagram  Pictorial View

14. Drawbacks
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The specific ports should be perfectly configured.
LED and PD should be in the same line of sight.
Distance between the transmitter and receiver should be
small due lack of quality of LED and Photodiode.
There should be no obstacle between the line of
transmitter and receiver.

15. Future Work
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Computer LED Photodiode Printer
 Communication Setup between Computer and Printer

16. Conclusion
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 The effectiveness of location-based services is
explained for visible light communication by showing
some examples .
 VLC can create a revolution in the area of consumer
networking because of efficiency and affordability. It is
expected that visible light communication will be
widely used as LED light market expands worldwide.

17. Thank you for
your
kind attention
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