design and construction of an ledscore board for minna township stadium
TRANSCRIPT
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DESIGN AND CONSTRUCTION OF AN LED-
SCORE BOARD FOR MINNA TOWNSHIP
STADIUM
OCHEJ E
G BRIEL
2 4118844EE
DEPARTMENT
OF
ELECTRICAL AND
COMPUTER ENGINEERING
FEDERAL UNIVERSITY OF
TECHNOLOGY
MINNA
DECEMBER
2009
f;
.
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DESIGN ND CONSTRUCTION OF N LED-
SCORE BO RD FOR MINN TOWNSHIP
ST DIUM
rr-
OCHEJ E
G BRIEL
2004118844EE
DEP RTMENT OF
ELECTRICAL
ND
COMPUTER
ENGINEERING
FEDERAL UNIVERSITY OF TECHNOLOGY,
MINNA
A
THESIS PRESENTED
TO THE DEP RTMENT
OF
ELECTRICAL
ND COMPUTER ENGINEERING,
FEDER L
UNIVERSITY OF
TECHNOLOGY, MINNA,
IN
P RTI L FULFILLMENT OF THE
REQUIREMENTS
FOR THE W RD
OF
THE
B CHELOR
OF
ENGINEERING B.ENG) DEGREE IN ELECTRIC L ND
COMPUTER
ENGINEERING
DECEM ER 2009
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DECL R TION
I, Ocheja Enemaneju Gabriel, hereby declare that this work was done by me and has never been
presented anywhere for the award
o
a degree I also hereby relinquish the copyright to the
Federal University
o
technology, Minna.
Ocheja E. Gabriel
Name o Student)
~ _ A l ~ l ~ ~ ~
Signature and date
.Engr. Dr. Y.A. Adediran
Head o department)
Signature and date
v
4 J A. Ajiboye
Project Supervisor)
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LIST OF FIGUR S
Fig.
1 1
A Football Scoreboard
Fig. 1 2 A Basketball Scoreboard
Fig. 2 1 4 bit SIPO Shift Register
Fig. 2.2 4 bit PI SO Shift Register
Fig. 2.3 Diagram
of
a P N junction
Fig. 2.4 Diagram
Fig.
3 1
Block diagram
of
Dot matrix display
Fig. 3.2 Interface between PS/2 Keyboard and Microcontroller
Fig.3.3 Atmega 8515 microcontroller circuit configuration
Fig.3.4 LEOs arrangement in Matrix form.
Fig.3.5 Cascading the 74HC595 shift register.
Fig. 3.6 Block Diagram of 7 segment display section.
Fig. 3.6b AT89C51 Microcontroller circuit configuration
l
Fig.3.7 LED Driver.
Fig. 3.8 LED 7 segment display circuitry.
Fig 3 9
Power Supply Circuitry.
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LIST OF T BLES
Table 21 Compounds and LED colours
Table 31 The PS/2 Keyboard connector
Table 4 1 Casing Specifications
VIII
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T BLE
OF
CONTENTS
Cover Page
Title Page
11
Dedication :
Declaration IV
Acknowledgement v
Abstract
VI
List
of
Figures
ll
List
of
Tables viii
hapter One Introduction
I
1 1 Introduction
1 2
Types
of
Electronic scoreboard 2
1 2 1
Football Scoreboard 2
1 2 2 Basketball Scoreboard 3
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13 Aims and Objectives 4
1 4
Significance 4
1 5 Methodology 5
1 6 Scope and limitations 5
1 7
Project Layout 5
Chapter Two Literature review and Theoretical background
2 1 Brief History 6
2 2 Previous works o others 8
2 3 Theoretical Background 9
2 3 1 The Power Supply Unit 9
2 3 2 Microcontroller 10
2 3 2 1 Types
o
microcontrollers
2 3 2 2 Microcontroller Programs
12
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2.3.2.3 Programming environment
of
a microcontroller.............................................. . 13
2.3.3 Shift Registers........ .............................................................................................. 14
2.3.3 .1 Serial in Serial Out Shift register............................................... :............... 15
2.3.3.2 Serial in Parallel Out Shift registers......................................................... 15
2.3.3.3 Parallel in Serial Out Shift Registers.. ............. ......... ...... ........................ 16
2.4 Light-emitting Diodes.............. .............. .. . . ...... . ......... ...................................... 17
2.5 Block Diagranl ............ ....... . ........ ...... ....................... ........................ :............ .
18
hapter
Three: Design
and
Implementation
3
1
The dot-matrix display board section ..................................... ................................
19
3 1 1
Tne Keyboard interface ......................
................................ :.............................. 20
3.
1 2
Atmega 8515 Microcontroller............................ ..............................................
22
3.1.3 LED Dot matrix display....................... ....................... .... .............. .... .................... 24
3.2 The Seven Segment Display section.............................................................................
25
3 2 1 AT89C51 Microcontroller ..........................................................................:....... 26
3.2.2 LED Driver.....................................
...................................................................
28
3.2 3 LED Seven Segment display ............ .... ....................................... :........................ 30
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3.3 Power Supply Section......... .... ......... ..... ........................................................................
31
3.4 Software Development Section .... ..... .......... ..... .
...
.....
..
................................................. 34
3.4. I Dot matrix board program development.. .......
..
........................ .......................... 34
3.4.2 Seven-segment board software development ................... ......... .......................... 36
Chapter Four
Construction
Testing and Discussion
of
Results.
4.1 Assembly ............
..
............. .
...
.... .... .
...
......
...
..... .....
.. ..
..... ............ .....
...
...... .... ................ 39
4.2 Tests and results............................................ ... ... ........................................................ 39
Chapter Five Conclusion and Recommendation
5.1 Conclusion.......
.. .. ..
.... ....
...
..
......
..
................... .... ..... .......
..
..
..
........... ................ ...........
41
5.2 Recommendation ................. .... .
..
...
........ .....
..
............................................................... 41
References ........................ ................ ..............
..
...... ...... .
.. ..
...... ........ ... ............. ................... 4 2
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