Elektor Electronic #382 - October 2008.pdf

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www.elektor.com
OKTOBER 2008
AUS$ 12.90 - NZ$ 15.50 - SAR 84.95 - US$ 9.95
£ 3.90
450MHZ SWEEP GENERATOR
. . .
ATM18 RELAY BOARD
. . .
GPS RECEIVER
. . .
BASCOM AVR
Go
with the
1
2
Reflow
Elektor’s
for home & lab reflow soldering
Plus everything you need to know on SMT
SMT Oven
Value for money?
digitale
oscilloscopes
for bargain prices
R43
FAST NI-MH BATTERY
CHARGER KIT
KC-5453
£11.75
plus postage & packing
IMPROVED LOW
VOLTAGE ADAPTOR
KC-5463
£4.50
plus postage & packing
This handy regulator will
let you run a variety of
devices such as CD,
DVD or MP3
players from your car
cigarette lighter sockets,
even a digital camera or powered
speakers from the power supply inside
your PC. This unit can supply 3V, 5V, 6V, 9V, 12V
or 15V from a higher input voltage at up to four amps
(with suitable heatsink).
• Kit includes screen printed PCB and all specified
components. Heatsink not included.
TOOLS &
ACCESSORIES
QM-1323 DMM
£10.00
plus postage
& packing
A truly versatile charger, capable of handling up to 15 of
the same type of Ni-MH or Ni-Cd cells. Build it to suit
any size cells or cell capacity and set your own fast or
trickle charge rate. It also has overcharge protection
including temperature sensing. Ideal for R/C enthusiasts
who burn through a lot of batteries.
• Kit includes PCB and all specified electronic
components.
• Case, heatsink and battery holder not included.
POWERTOOL BATTERY
CHARGER KIT
KC-5436
£11.75
plus postage & packing
Enhance the performance of the charger supplied with
your power tool with this controller. It incorporates charge
timeout, min and max temperature monitoring, Delta
charge detection, power and charge LED indicator,
adjustable Delta V,
temperature settings, and
optional adjustable trickle
charge. Suits both Ni-Cd
and Ni-MH cells.
• Kit includes PCB with
overlay, case, all
electronic components
and clear English
instructions.
A budget priced meter with
everything you need -
capacitance, temperature and
10A on AC and DC, compact
and light weight with rugged
moulded case.
• Data hold
• Temp range: -20° to 760°C
• Case included
• Category: Cat III 600V
• Display: 4000 count
• Ave/RMS: True RMS
• 137(H) x 65(W) x 35(D)mm
• For full specs see our website
QM-3532 HOBBYIST’S MAGNIFIER
£8.50
plus postage & packing
AMPLIFIER
MODULES
This ultra low
distortion amplifier module
uses the new ThermalTrak power
transistors and is largely based on
the high-performance Class-A
amplifier. This improved circuit has no need for a
quiescent current adjustment or a Vbe multiplier
transistor and has an exceptionally low distortion figure.
• Kit supplied with PCB and all electronic components.
• Heatsink and power supply not included.
• Output Power: 135WRMS into 8 ohms
and 200WRMS into 4 ohms
• Frequency Response at 1W: 4Hz to 50kHz
• Harmonic Distortion: <0.008% from 20Hz to 20kHz
KC-5470
£26.25
plus P&P
This handy magnifier has a 2 times main
magnifier lens with 5 times insert lens and 2
LED lights mounted on a flexible arm. Can be
free-standing or clamped to a surface up
to 38mm thick.
• Lens 110mm (dia.)
• Includes protective
lens pouch
• Requires 3 x AAA
batteries (Use
SB-2413)
TS-1112 GAS SOLDERING IRON
£8.50
plus postage & packing
BATTERY ZAPPER
KIT MK II
KC-5427
£29.00
plus postage & packing
This kit attacks a common cause of failure in wet lead
acid cell batteries: sulphation.
The circuit produces
short bursts of high
level energy to
reverse the
damaging sulphation
effect. This improved unit features a
battery health checker with LED indicator, new
circuit protection against badly sulphated batteries,
test points for a DMM & connection for a battery charger.
• Kit includes case with screen printed lid, PCB with
overlay and all electronic components with clear
English instructions.
• Suitable for 6, 12 and 24V batteries
• Powered by the battery itself
Everything you need to solder; silver solder, braze,
heatshrink, strip paint etc. Refillable with stand, extra tips,
torch and cutting attachment.
• 3 soldering tips
• 1 torch attachment
• 1 rope
cutter
KC-5471
£16.00
plus post & packing
The amp module (KC-5470) is powered using
an unregulated rail only. This power supply kit is
specifically designed to provide a balanced
+/- 55VDC supply to power this
fantastic amp kit. It has two LEDs,
which illuminate when power is
present on the rails and the
assist in slowly discharging
the filter caps when
power is switched off.
• Kit includes PCB and
all electronic components.
FREE CATALOGUE
Checkout Jaycar’s
extensive range
We have kits & electronic
projects for use in:
• Audio & Video
• Car & Automotive
• Computer
• Lighting
• Power
• Test & Meters
• Learning & Educational
• General Electronics Projects
• Gifts, Gadgets & Just for fun!
For your FREE catalogue logon to
www.jaycarelectronics.co.uk/catalogue
or check out the range at
www.jaycarelectronics.co.uk
POST & PACKING CHARGES
Order Value
£10 - £49.99
£50 - £99.99
£100 - £199.99
£200 - £499.99
£500+
Cost
£5
£10
£20
£30
£40
Max weight 12lb (5kg).
Heavier parcels POA.
Minimum order £10.
HOW TO ORDER
• ORDER ON-LINE:
www.jaycarelectronics.co.uk
• PHONE:
0800 032 7241*
+61 2 8832 3118*
• FAX:
• EMAIL:
techstore@jaycarelectronics.co.uk
• POST:
P.O. Box 107, Rydalmere NSW 2116 Australia
• ALL PRICING IN POUNDS STERLING
• MINIMUM ORDER ONLY £10
*Australian Eastern Standard Time (Monday - Friday
09.00 to 17.30 GMT + 10 hours only)
Expect 10-14 days for air parcel delivery
Note: Products are despatched from Australia,
so local customs duty & taxes may apply.
Prices valid till 31/10/08
0800 032 7241
jaycarelectronics.co.uk
EasyPIC5 is a world-class tool that
enables immediate prototype design...
mikroICD
- Hardware In-
Circuit Debugger on-board
enables easy debugging
High-Performance
USB 2.0
On-Board
Programmer
User-Friendly
PIC develop-
ment system
Thanks to many new features, you can start creating your great devices immediate-
ly.
EasyPIC5
supports 8-, 14-, 18-, 20-, 28- and 40- pin PIC microcontrollers (it
comes with the PIC16F887). The
mikroICD
(Hardware In-circuit Debugger) enables
very efficient step by step debugging. Examples in
C, BASIC, Pascal
and
Assembly
language are provided with the board. EasyPIC5 comes with the following printed
documentation: EasyPIC5 Manual, PICFlash2 Manual and mikroICD Manual. Also
EasyPIC5 is delivered with USB and Serial cables needed for connecting with your
PC.
Evolving product features and modern input design require
the use of touch screens. The
Touch screen controller
with connector available on EasyPIC5 is a
display overlay
with the ability to display and receive information on the
same display. It allows a display to be used as an input
device. Simple installation onto the face of a GLCD for easy
connection to EasyPIC5 board with built-in Touchscreen
Controller and Connector.
S O F T W A R E
A N D
H A R D W A R E
S O L U T I O N S
F O R
E M B E D D E D
W O R L D
mikroElektronika
DEVELOPMENT TOOLS | COMPILERS | BOOKS
10/2008 - elektor
h t t p : / / w w w . m i k r o e . c o m /
Find your distributor:
UK, USA, Germany, Japan, France,
Greece, Turkey, Italy, Slovenia, Croatia, Macedonia, Pakistan,
Malaysia, Austria, Taiwan, Lebanon, Syria, Egypt, Portugal,
India, Thailand, Taiwan, Czech and Slovak Republic.
3
Go with the Reflow
Do-it-yourself SMD reflow oven
controllers were published in the
January 2006 and December
2007 issues of Elektor — and
what a response they got from
you! To us it was just another
proof that surface mount technol-
ogy (SMT), however sneaky for
tininess, is ‘hot’ and does not stop
many Elektor readers from slap-
ping together the odd circuit using
this technology. Not forgetting
schools and small labs of course,
which at some point will feel a
compelling need to start ‘baking’
circuits.
Because Elektor is not your usual
paper-churning publishing house
we set out to find a ready-made
SMT reflow oven, specifically
one with improved accuracy
and control as compared with a
modified pizza oven, and suitable
for retailing to our readers. Our
quest for an apt product quickly
took us into China but it was not
without pitfalls like CE and RoHS
approvals, flaky manuals, deep
seas, high winds and customs
red tape for container loads of
ovens. We managed to pull it off
however and proudly present the
Elektor SMT Reflow Oven. It is our
belief that this tool will empower
many an electronics enthusiast
to securely exploit SMT / SMD /
SMA and provide a new impulse
to his or her activities in the field
of electronics.
In good Elektor tradition the use
of the oven is backed up with
illustrated theory and hands-on
information to enable you all to
master virtually every aspect of
SMT assembly: workshops, maga-
zine articles, gizmos and tools
— all in the pipeline!
Alongside the heavy coverage of
the SMT Oven in this issue the lab
and editorial teams have again
managed to produce many pages
worth of projects and articles that
hopefully provide an incentive to
solder and assemble, learn about
new products and technologies,
or just while away for a few hours
browsing the pages (in offices
too!). There sure is something for
everyone.
In this cluster of articles we cover not just the ins & outs of the new
Elektor SMT oven but also how to deal with those tiny components you
just can’t afford to ignore anymore for up to date circuit board design
and manufacturing. We also cover the past and future of SMT and
present a handy guide to preparing boards for reflow soldering.
Elektor
SMT
Precision
Reflow
Come see us at:
- AES Convention, San Francisco, October 2-5
- Embedded Systems, Boston, October 27-30
Audio Amateur Inc. / Elektor USA booth
34 Multi-purpose GPS Receiver
Stand-alone GPSs when teamed
them up with suitable electronics
can perform our positioning or
navigation tasks just as accurately
as manufactured products everyone
seems to have in their cars recently.
This article shows how to get two such
devices up and running.
44 Communicating with CAN
Despite the fact that the CAN protocol is a
serial protocol, it can’t just be connected
to (the serial port of) a computer.
The all-round USB-CAN adapter described
here provides a compact and simple solution!
Wisse Hettinga
International Editor
CONTENTS
Volume 34
October 2008
no. 382
projects
24
Elektor SMT Precision
Reflow Oven
26
Before Baking…
30
Baking…
34
Multi-purpose GPS Receiver
44
Communicating with CAN
50
BASCOM AVR Course (2)
54
RF Sweep Frequency
Generator / Spectrum
Analyser
62
ATM18 Relay Board
74
Design Tips
Testing Trailer Connectors
PeDAl Power
Oven
22-32
technology
18
The SMD Success Story
22
SMT of the Future
54 RF Sweep Frequency Generator /
Spectrum Analyser
The instrument described in this article
70
Two Low Cost Scopes
combines the functions of a sweep frequency generator and a spectrum analyser. In
the SFG mode, it can be used to measure the frequency characteristics of selective
components or circuits at frequencies up to 450 MHz.
info & market
6
8
Colophon
Mailbox
10
News & New Products
80
Elektor SHOP
84
Sneak Preview
62 ATM18 Relay Board
Now that our ATM18 project with the levitating magnet in the previous issue has
become truly active, we can use a relay board to implement even more external
effects.
infotainment
75
Hexadoku
76
Retronics:
Elektor TV Games Compu-
ter (1979)

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