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ISSN 0262 3617 PROJECTS . . . THEORY . . . NEWS . . . COMMENTS . . . POPULAR FEATURES . . . VOL. 30. No. 10 OCTOBER 2001 www.epemag.wimborne.co.uk EPE Online: www.epemag.com Cover illustration by Jonathan Robertson Projects and Circuits CAMCORDER POWER SUPPLY by Terry de Vaux-Balbirnie Battery replacement with a lot more bottle! 688 PIC TOOLKIT Mk3 by John Becker An enhanced PIC microcontroller programming development board, and prelude to next month’s exciting new Windows-based TK3 software! 700 2-VALVE SW RECEIVER by Robert Penfold A nostalgic and simple design for valve radio enthusiasts 714 INGENUITY UNLIMITED hosted by Alan Winstanley Three-way Lighting 730 PERPETUAL PROJECTS – 4 by Thomas Scarborough Three more solar powered projects to complete the series – Gate Sentinel; Bird Scarer; In-Out Register 732 Series and Features CIRCUIT SURGERY by Alan Winstanley and Ian Bell Heatsink calculations 698 NEW TECHNOLOGY UPDATE by Ian Poole Thermocouple-based accelerometers dispense with moving parts 706 TRAFFIC CONTROL by Owen Bishop SCOOT systems speed the flow of road traffic and pedestrians 710 NET WORK – THE INTERNET PAGE surfed by Alan Winstanley Sircam and other worms and viruses 726 INTERFACE by Robert Penfold Single-chip 32-bit output port 738 Regulars and Services EDITORIAL 687 NEWS – Barry Fox highlights technology’s leading edge Plus everyday news from the world of electronics 695 BACK ISSUES Did you miss these? Many now on CD-ROM! 707 READOUT John Becker addresses general points arising 721 ELECTRONICS VIDEOS Our range of educational videos 724 SHOPTALK with David Barrington The essential guide to component buying for EPE projects 727 CD-ROMS FOR ELECTRONICS A wide range of CD-ROMs for hobbyists, students and engineers 728 ELECTRONICS MANUALS Essential reference works for hobbyists, students and service engineers 740 DIRECT BOOK SERVICE A wide range of technical books available by mail order 742 © Wimborne Publishing Ltd 2001. 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. PRINTED CIRCUIT BOARD AND SOFTWARE SERVICE PCBs for EPE projects. Plus EPE software 745 ADVERTISERS INDEX 748 Our November 2001 issue will be published on Thursday, 11 October 2001. See page 679 for details Readers Services ) Editorial and Advertisement Departments 687 Everyday Practical Electronics, October 2001 677