KABTRONICS World Clock 2 Produkthandbuch

World Clock 2

Operating and

Assembly Manual

K A B T R O N I C S

World Clock Kit Page 2

Table of Contents

INTRODUCTION ..................................................................................................4

SOLDERING ........................................................................................................6

ASSEMBLY INSTRUCTIONS..............................................................................8

MASTER BOARD...............................................................................................18

DISPLAY BOARD..............................................................................................23

TESTING CONTROLLER AND DISPLAY SLICES ...........................................25

CLOCK CONFIGURATION................................................................................26

CLOCK ACCURACY..........................................................................................28

MULTI BOARD CLOCKS...................................................................................28

CASES ...............................................................................................................28

PARTS IDENTIFICATION..................................................................................30

THEORY OF OPERATION.................................................................................37

IN CASE OF DIFFICULTY .................................................................................39

SPECIFICATIONS..............................................................................................40

CIRCUIT BOARD VIEWS...................................................................................41

K A B T R O N I C S

World Clock Kit Page 3

Document version 1.20 or use with PC board version 3

K A B T R O N I C S S O L E R I N G

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Introduction

This is a kit to build a clock displaying time or multiple locations.

Controller Slice

This clock is made o slices, one controller slice, zero or more display slices. Each slice shows two

lines o time.

Display Slice

This manual irst guides the assembly o the slices, ollowed by operating the clock. There is a

section describing the parts i you are un amiliar with electronic parts, and a section describing the

underlying design o the clock.

K A B T R O N I C S S O L E R I N G

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Gently unpack the contents o the box using the proper parts list.

CONTROLLER SLICE PARTS LIST

Qty Description

1 IC,uProc PIC18F2450, DIP-28

1 IC,Prom, Serial, 1Mbit, DIP8

12 IC, SAA1064, 7segDvr

20 LED, 16-segment, Red, LTP-587HR

8 LED, 7-segment, Red, LDS-A414RI

8 LED, Red, 3MM

2 Cap, 22pF, Ceramic

13 Cap, .22uF, Ceramic

12 Cap, 0.0027uF Polyfilm

1 Cap, 1F, coin

1 Res, 100 ohm, 1/4 Watt, Cfilm

1 Res, 1K ohm, 1/4 Watt, Cfilm

2 Res, 10K ohm, 1/4 Watt, Cfilm

24 Tran, NPN, 2N3904

3 Diode, Schottky, 1N5818

1 Xtal, 8M

1 IC, Analog, Volt Det, S-808, TO-92

1 SKT, IC, DIP8, .3

1 SKT, IC, DIP28, .3

3 Switch, Push, RtAng, PC board TH mount

3 CAP, BLACK

3 Cap, 10uF,16V Tantalum

JACK, 2.5mm, Right Angle

1 Supply, 5Volt 2Amp

1 PCB, World 2

DISPLAY SLICE PARTS LIST

Qty Description

1 IC,uProc PIC18LF2510, DIP-28

12 IC, SAA1064, 7segDvr

20 LED, 16-segment, Red, LTP-587HR

8 LED, 7-segment, Red, LDS-A414RI

8 LED, Red, 3MM

13 Cap, .22uF, Ceramic

12 Cap, 0.0027uF Polyfilm

1 Res, 10K ohm, 1/4 Watt, Cfilm

24 Tran, NPN, 2N3904

1 Diode, Schottky, 1N5818

1 SKT, IC, DIP28, .3

3 Cap, 10uF,16V Tantalum

1 PCB, World 2

1 20 pin rt angle dual row header

1 20 pin rt angle dual row socket

K A B T R O N I C S S O L E R I N G

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Soldering

This manual can’t teach the art o soldering, but here are the basics. Remember, you need to

make over 700 GOOD solder joints or each slice; each bad joint will be an adventure in

troubleshooting.

Wet the tip o the iron with a bit o solder and wipe o the excess solder on the wet sponge

occasionally, or when you notice the joint is not heating properly. The small amount o solder le t

on the tip helps conduct heat to the lead and the pad.

Insert the component leads and press the component lat against the PC Board. Slightly spread

the leads to hold it in place when you lip the board over to expose the back side with the

component lead acing up.

•Make good contact between the iron, the lead, and the pad on the board so the lead and

the pad both heat up enough to melt the solder.

•It should take rom 0.5 to 1 second or the joint to become hot enough to melt the

solder.

•Don’t overheat the joint, as soon as the solder melts and wicks into the joint remove the

iron and hold still or a ew seconds until the joint reezes.

K A B T R O N I C S S O L E R I N G

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A good solder joint will orm a shiny curved sur ace bonding the lead and the pad on the PC

board. I the lead wasn’t heated enough to melt the solder, the solder will wick in to the pad, but

will not adhere to the lead. You may notice a dark line around the lead where the solder dives

down through the hole.

A similar bad joint orms when the pad wasn’t heated enough to melt the solder. A cold solder

joint can o ten be ixed by reheating the joint; sometime a little more solder will be needed.

More detailed instructions can be ound on the internet with a little searching on the topic o

soldering.

A ter inspecting the solder joint, clip o the excess lead using the diagonal cutter. Cut at the top

o the solder joint; don’t dig into the solder joint.

Unsoldering

A supply o de-soldering braid is supplied with the kit. I you ind the need to remove a

component, use the de-solder braid by pulling out a ew inches and pressing the braid against the

lead and the pad using the iron. You will see the solder melt and spread into the wick leaving very

little solder le t in the pad.

Sometimes it helps to clip the lead o the component so you can deal with each lead separately.

Optional Clean-up

The clear sticky rosin le t around the solder site can be cleaned up with alcohol (not rubbing

alcohol) and a toothbrush, but be sure to let the board dry be ore expecting the board to operate

properly. This cleanup is optional; the clock will run ine without cleaning the rosin.

K A B T R O N I C S A S S E M B L Y I N S T R U C T I O N S

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Assembly Instructions

You will need the ollowing tools to build your clock.

•Soldering Iron meant or electrical work

•Small Diagonal Wire Cutter

One side o the PC board has white paint markings, shapes, and re erence designators. That

marked side is the component side, upon which all the components will be placed.

K A B T R O N I C S A S S E M B L Y I N S T R U C T I O N S

World Clock Kit Page 9

isplay rivers

( ) Load 16 SAA1064 display drivers, U5-U16

The mark or notch on the SAA1064 should match the notch on the silkscreen.

isplays

K A B T R O N I C S A S S E M B L Y I N S T R U C T I O N S

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1010

( ) Load the 20 16-segment displays with the decimal point towards the bottom.

Be quick about soldering these displays, overheating can damage them.

Clip the leads o a ter soldering.

( ) Load the eight 7-segment displays. Once again, the decimal point goes on the bottom and,

once again, be quick with the soldering iron.

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