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REMOTE CONTROL MAINS SWITCH
Plus UHF REMOTE TRANSMITTER
i
Switches loads of up to 2.5kW
i
One-minute to four-hour timer or continuously on
i
Control up to ten units from one transmitter
i
Over 200m range
RECYCLE IT!
Looking for a cheap analogue or LED meter?
A discarded receiver can often supply the parts
Plus
TEACH-IN 2010
Ladder Logic Programming For The PIC Micro
Part 3 – Timers and Shift Registers
$8.75 US $10.25 CAN
JAN 2010 PRINTED IN THE UK
CompactControl
Design
Electronics and
Software design
PIC microcontroller applications
●
Analogue and digital design
●
Data acquisition
●
Power supplies and power control
●
Phone: 01260 281694.
Fax: 01260 501196.
enquiries@compactcontrol.co.uk
Ultra low power applications
●
GPRS/SMS communications
●
USB, RS232/422/485, IrDA interfaces
●
Schematic capture and PCB layout
●
Firmware development in C and assembler
●
Software development using C++ and visual studio
●
Automotive electronics
●
Wireless devices 433/458 radio devices, 2.4GHz packet radio comms, ZigBee.
●
Ethernet devices using PIC18/PIC32, Web server, FTP server etc
77 Woolston Avenue,
Congleton,
Cheshire,
CW12 3ED, UK
Company number 5528711
New products.
USB to CANBus, fully electrically isolated adapter, capable of 1Mbaud
NBR, available with 2.5mm jack socket for CANBus connection.
USB to RS485 adapter, available with 2.5mm jack socket or 3m cable.
Check web site for details and prices.
MonCon485
A robust and flexible monitoring and control system
using industry standard RS485 with ModBus
compatible versions available. This system consists of
a number of monitor and control boards that can plug
into a backplane or be mounted otherwise and
communicate using a ribbon cable. All devices include
intelligence and are supplied pre-programmed with a
range of features, however each module includes a
bootloader which means you can easily develop your
own functionality. MonCon485 is ideal for ATE
applications, interactive devices, web based devices,
PLC's, Home control systems, CNC machinery etc.
10 slot backplane with boards installed
Currently available
●
Backplanes, 4, 6, 8, 10 position
ADC/DAC board: 12 bit, 12 ADC, 4 DAC
Relay board.
8 SPST relays
●
Relay board: 8 SPST relays
●
Microstepping stepper controller/driver
●
32 channel digital I/O: 24 channels can direct drive LEDS
ADC/DAC board, 12 bit
12 channel ADC
4 channel DAC
●
Peripheral board: 2x USB host, 16 bit parallel I/O, 8 bit full LCD I/O,
2 x PS/2 (keyboard, mouse, etc)
●
●
Controller board: Top end PIC 18, Ethernet port, USB port.
Power supply board: 3.5mm barrel socket for external mains adapter.
Generates 5V system power and additional supplies as required.
●
Our capabilities
●
Copyright
2008, Wimborne Publishing Ltd
(Sequoia House, 398a Ringwood Road, Ferndown, Dorset BH22 9AU, UK)
and TechBites Interactive Inc.,
(PO Box 857, Madison, Alabama 35758, USA)
All rights reserved.
WARNING!
The materials and works contained within
EPE Online
— which are made
available by Wimborne Publishing Ltd and TechBites Interactive Inc —
are copyrighted. You are permitted to make a backup copy of the downloaded file
and one (1) hard copy of such materials and works for your personal use.
International copyright laws, however, prohibit any further copying or
reproduction of such materials and works, or any republication of any kind.
TechBites Interactive Inc and Wimborne Publishing Ltd have used
their best efforts in preparing these materials and works. However, TechBites
Interactive Inc and Wimborne Publishing Ltd make no warranties of
any kind, expressed or implied, with regard to the documentation or data
contained herein, and specifically disclaim, without limitation, any implied
warranties of merchantability and fitness for a particular purpose.
Because of possible variances in the quality and condition of materials and
workmanship used by readers,
EPE Onlin
e, its publishers and agents disclaim
any responsibility for the safe and proper functioning of reader-constructed
projects based on or from information published in these materials and works.
In no event shall TechBites Interactive Inc or Wimborne Publishing Ltd
be responsible or liable for any loss of profit or any other commercial damages,
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these materials and works.
ISSN 0262 3617
PROJECTS
THEORY
NEWS
COMMENT
POPULAR FEATURES
INCORPORATING ELECTRONICS TODAY INTERNATION
AL
VOL. 39. No 1
January 2010
www.epemag.com
Projects and Circuits
REMOTE-CONTROLLED MAINS SWITCH
by John Clarke
10
Switch mains appliances on and off remotely
UHF REMOTE MAINS SWITCH TRANSMITTER
by John Clarke
21
Will operate the Remote-Controlled Mains Switch over a 200m range
PLAYBACK ADAPTER FOR CD-ROM DRIVES – PART 2
by Mauro Grassi
26
Use old CD-ROM drives as CD players with remote control
12V – 24V HIGH-CURRENT MOTOR SPEED CONTROLLER – PART 2 34
by Mauro Grassi
Rated at up to 40A, with speed regulation, automatic soft-start and digital display
INGENUITY UNLIMITED
72
Wartbox; AV Selector
Series and Features
TECHNO TALK
by Mark Nelson
20
They Won’t Get Any Greener
TEACH-IN 2010 LADDER LOGIC PROGRAMMING FOR
THE PIC MICRO
by Walter Ditch
42
Part 3: Timers and Shift Registers
WIN A TEXTSTAR LCD MODULE
49
An EPE exclusive free entry competition
RAPMAN – THE 3D PRINTER – PART 2
by Mike Hibbett
50
Introducing a low-cost 3D printer
MAX’S COOL BEANS
by Max The Magnificent
54
I’m a reading fool!
PIC N’ MIX
by Mike Hibbett
56
Real Time Operating Systems – Part 4
CIRCUIT SURGERY
by Ian Bell
59
Using Transistors as Switches
RECYCLE IT!
by Julian Edgar
63
The good bits in old receivers
PRACTICALLY SPEAKING
by Robert Penfold
66
Front panel lettering and overlays
NET WORK
by Alan Winstanley
74
Private, Keep Out!; Dynamite Data
Regulars and Services
EDITORIAL
7
NEWS
– Barry Fox highlights technology’s leading edge
8
Plus everyday news from the world of electronics
BACK ISSUES
Did you miss these?
40
SUBSCRIBE TO EPE
and save money
62
CD-ROMS FOR ELECTRONICS
68
A wide range of CD-ROMs for hobbyists, students and engineers
READOUT
Matt Pulzer addresses general points arising
71
DIRECT BOOK SERVICE
75
A wide range of technical books available by mail order,
plus more CD-ROMs
EPE PCB SERVICE
© Wimborne Publishing Ltd 2009. Copyright in all
drawings, photographs and articles published in
EVERYDAY PRACTICAL ELECTRONICS is fully
protected, and reproduction or imitations in whole or
in part are expressly forbidden.
78
PCBs for EPE projects
ADVERTISERS INDEX
80
Our February 2010 issue will be published on
Thursday 14 January 2010, see page 80 for details.
Readers’ Services • Editorial and Advertisement Departments 7
Everyday Practical Electronics, January 2010
1
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