POCKET DICE KIT MODEL K-28 Assembly and Instruction Manual Elenco Electronics, Inc. ® Copyright © 2009, 1989 by Elenco® Electronics, Inc. All rights reserved. Revised 2009 REV-F No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher.
PARTS LIST If you are a student, and any parts are missing or damaged, please see instructor or bookstore. If you purchased this pocket dice kit from a distributor, catalog, etc., please contact Elenco® Electronics (address/phone/e-mail is at the back of this manual) for additional assistance, if needed. DO NOT contact your place of purchase as they will not be able to help you. RESISTORS Qty. r6 r2 r1 Symbol R2,4,5,6,8,9 R3, R7 R1 Value 1.2kΩ 5% 1/4W 1.5kΩ 5% 1/4W 100kΩ 5% 1/4W Qty.
IDENTIFYING RESISTOR VALUES Use the following information as a guide in properly identifying the value of resistors. BAND 1 1st Digit Color Black Brown Red Orange Yellow Green Blue Violet Gray White BAND 2 2nd Digit Digit 0 1 2 3 4 5 6 7 8 9 Color Black Brown Red Orange Yellow Green Blue Violet Gray White Multiplier Digit 0 1 2 3 4 5 6 7 8 9 Color Black Brown Red Orange Yellow Green Blue Silver Gold Resistance Tolerance Multiplier 1 10 100 1,000 10,000 100,000 1,000,000 0.01 0.
INTRODUCTION Dice are the most ancient gambling implement known to man, and the most universal, having been known in nearly all parts of the world since earliest times. Today they are used in some games of skill, such as backgammon, but are used chiefly in gambling games. In the United States the most popular dice game is Craps. CIRCUIT DESCRIPTION Each die consists of seven light emitting diodes (LEDs). Since there are two dice, we need 14 LEDs.
The next pulse will repeat the process with two showing on the die. When the die displays a one, only LED D3 will light. For this to happen, output pin 4, 5 and 6 or IC2 will have to go low (0) and the following will result. The output of IC2 also drives IC3. This results in IC3 output changing in step with IC2, but at a slower rate. 1) D3 turns on as its cathode will be low. 2) The input of the NAND gate is low therefore its output will be high. D2 and D1 will not light.
CONSTRUCTION Introduction • Turn off iron when not in use or reduce temperature setting when using a soldering station. The most important factor in assembling your K-28 Pocket Dice Kit is good soldering techniques. Using the proper soldering iron is of prime importance. A small pencil type soldering iron of 25 - 40 watts is recommended. The tip of the iron must be kept clean at all times and well-tinned. • Tips should be cleaned frequently to remove oxidation before it becomes impossible to remove.
ASSEMBLE COMPONENTS TO THE PC BOARD S1 - Push Button Switch S2 - Slide Switch J5 - Jumper Wire J6 - Jumper Wire (see Figure A) B1 - Battery Snap 9V (see Figure D) J3 - Jumper Wire (see Figure A) C1 - .01μF (103) Capacitor D19 - 1N4001 Diode (see Figure C) IC3 - 16-pin Socket IC3 - 4018 Integrated Circuit (see Figure B) R7 - 1.5kΩ 5% 1/4W Resistor (brown-green-red-gold) IC2 - 16-pin Socket IC2 - 4018 Integrated Circuit (see Figure B) J1 - Jumper Wire (see Figure A) R3 - 1.
ASSEMBLY CONTINUED D8 - LED (red) D9 - LED (red) D10 - LED (red) D11 - LED (red) D12 - LED (red) D13 - LED (red) D14 - LED (red) (see Figure E) D1 D2 D3 D4 D5 D6 D7 - LED (red) LED (red) LED (red) LED (red) LED (red) LED (red) LED (red) (see Figure E) Figure E Mount the LED with the flat side in the same direction as marked on the PC board. Mount flush with PC board Flat Foil Side of PC Board TROUBLESHOOTING Contact Elenco® Electronics if you have any problems.
CRAPS yet decided. He must roll them again and again, as often as necessary, and he will win if his point appears before a 7, but he will lose if a 7 appears first. All intervening rolls are meaningless. Players: Any number from two and up. The players bet amongst themselves. In gambling houses, the players are grouped around a large table resembling a billiard table, stenciled with a layout shown where bets should be placed and what odds are paid.
DEFINITION OF TERMS Capacitor An electrical component that can store electrical pressure (voltage) for periods of time. Color Code A method for marking resistors using colored bands. Digital Circuit A wide range of circuits in which all inputs and outputs have only two states, such as high/low. Diode An electronic device that allows current to flow in only one direction. Disc Capacitor A type of capacitor that has low capacitance and is used mostly in high frequency circuits.
SCHEMATIC DIAGRAM -10-
Elenco® Electronics, Inc. 150 Carpenter Avenue Wheeling, IL 60090 (847) 541-3800 Fax: (847) 520-0085 Website: www.elenco.com e-mail: elenco@elenco.
