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Contents Vol.18, No.1; January 2005 www.siliconchip.com.au FEATURES 8 VAF DC-7 Generation 4 Kit Speakers They’re smaller and more affordable than the DC-X model but still offer excellent sensitivity and performance – by Philip Vafiadis & Simon Wilde 12 Build Yourself A Windmill Generator, Pt.2 A washing machine motor makes a cheap and effective alternator but first you need to make a few modifications – by Glenn Littleford VAF DC-7 Generation 4 Kit Speakers – Page 8. 40 Review: Tektronix TPS2000 Series LCD Oscilloscopes They’re battery-powered, fully-isolated and are ideal for power measurements and analysis, as well as all the usual tasks – by Peter Smith PROJECTS TO BUILD 24 Build A V8 Doorbell Is the sound of a V8 engine music to your ears? This project will give a deepthroated V8 rumble when your front doorbell is pressed – by John Clarke V8 Doorbell – Page 24. 34 IR Remote Control Checker Check your remote controls with this simple project. It will quickly tell you if the remote is dead or if one or more buttons has stopped working – by Jim Rowe 60 4-Minute Shower Timer The sound of running water starts a 4-minute countdown to an annoying alarm. It’s easy to build too, as the PC board comes pre-assembled – by Ross Tester 66 Wanna Go Prawning? You’ll Need The Prawnlite You can pay twenty or thirty bucks for a kilo of prawns. Build our Prawnlite and you can catch the little beggars yourself – by Branko Justic & Ross Tester 76 Simon Says . . . Nostalgia – it ain’t what it used to be! Here’s a PIC-based update of a popular game from the 1970s – by Clive Seagar SPECIAL COLUMNS 44 Serviceman’s Log What’s cooking? It’s just the TV set – by the TV Serviceman 82 Vintage Radio Outback communications: the Flying Doctor radios – by Rodney Champness 92 Circuit Notebook IR Remote Control Checker – Page 34. (1) Lithium-Polymer Peak Charger; (2) Efficient Fan Speed Controller; (3) Simple White Noise Generator; (4) PICAXE-Based Toy Traffic Lights With Battery Saver; (5) 12V Halogen Lamp Dimmer DEPARTMENTS 2 4 57 59 65 Publisher’s Letter Mailbag Product Showcase Silicon Chip Weblink Order Form siliconchip.com.au 89 97 100 101 103 Book Review Ask Silicon Chip Notes & Errata Market Centre Ad Index Build A Prawnlite – Page 66. January 2005  1