User's Manual - VTC

dehisceforkElectronics - Devices

Nov 2, 2013 (3 years and 8 months ago)

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User Manual


Koffs Investek Color Changing
Scoreboard







Koffi Selom Egbeto

2009




Table of Contents


1

WELCOME


2

INSTALLATION


3

PRODUCT OVERVIEW

3.1

Features

3.2
Specification
s


4

BASIC OPERATIONS


5

APPENDICES




1

WELCOME


Congratulations on becoming an owner of the Color Changing
Scoreboard! You made an excellent choice and we hope you will
enjoy all its capabilities.


Koffs Investek

Color Changing Scoreboard offers a fun set of
functionality and amazing color displays at an affordable price.


Koffs Investek Color Changing Scoreboard
is a great product and we
hope you enjoy it!




This document is subject to changes without notice. The latest
electronic version of this user manual can be downloaded from
Koffs
Investek website:


Http://www.koffsinvestek.
com/user_manual/colorchangingscoreboard

















2

INSTALLATION

Color Changing Scoreboard
is

designed to look and feel like standard
scoreboard with couple additional colors
. The following photo illustrates
the appearance of
the Color Changing Scoreboard
and
its components.




















3906 PNP
Transistors

Resistors

74HC138
Decoder

Resistors

74154 Decoder

Sockets

5x7 LED
Matrix

Jumper

Microcontroller

Pushbuttons



Block Diagram


High score= red

Low score= green







Score is tie, color changes to
orange for both.




3
PRODUCT OVERVIEW


Koffs Investek board is a next generation Scoreboard based on tri
-
color
LEDs.

3.1
Features



Tri
-
color LEDs




Low Current Consumption



Energy efficient



High Brightness



Easy to Use



PCB Mounting


3.2
Specifications



1.54
-
inch (39.1mm) matrix height

-


Colors: red, green, orange (yellowish)

-

Flat package and light weight

-

Easy assembly

-

High quality and low cost

-

High reliable and intensity

-

Low
power requirement

-

35 dots 5 x 7 matrix array

-

These devices are made with white dots and black surface

-

Instrument panels

-

Digital read out display



Board Dimension
---

3.20’’ x 3.25’’



Power Supply
---

3Volts





4
BASIC OPERATIONS


Koffs Investek

Changing Color Scoreboard works differently. The voltage
used should be 3 Volts. Transistors used to handle LEDs current (15
mA).

Red LED voltage = 1.5 V

Green LED voltage = 0.5 V

When pushbutton1 is pressed
the lights or LEDs on the Matrix will
automati
cally change colors due to how high, equal or low the score is.

Pushbutton2 should reset score.

Red = Higher score

Green = Lower score

Orange (yellowish) = Same score










5 APPENDICES



Eagle CAD Board Layout























Circuit Schematic