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Contents Vol.13, No.5; May 2000 FEATURES 4 What’s Inside A Furby? A lot of smart electronics, that’s what. We peel back the fur and take a peek inside. And if you want to start hacking, there’s lots of web sites to look at – by Julian Edgar 34 Dolby Headphone: Five Channels Of Surround Sound Just how do you get five channels from normal stereo headphones? An Australian company, Lake Technology Ltd, made it happen – by Leo Simpson Building The Ultra-LD Stereo Amplifier – Page 16. PROJECTS TO BUILD 16 Building The Ultra-LD Stereo Amplifier; Pt.2 It fits nicely inside an ATX computer tower case, complete with a fan-cooled tunnel heatsink plus selector switch and volume control – by Leo Simpson 56 Build A LED Dice A PIC microcontroller makes the circuit really simple. We tell you how it was designed and show you how to build it – by Doug Jackson 72 A Low-Cost AT Keyboard Translator This low-cost project takes the complex scan codes from a PC keyboard and spits out standard ASCII codes. It’s just the shot for use with the BASIC Stamp and PIC series of microcontrollers but has lots of other uses as well – by Steve Carroll & Bob Nicol LED Dice – Page 56. 78 50A Motor Speed Controller For Models It fits in a tiny plastic case, can handle motor currents up to 50A and is compatible with existing radio control gear – by Ross Tester & Branco Justic SPECIAL COLUMNS 40 Serviceman’s Log When is a fault not a fault – by the TV Serviceman 64 Vintage Radio Keyboard Translator – Page 72. Making the obsolete useful again – by Rodney Champness DEPARTMENTS 2 10 33 53 Publisher’s Letter Mailbag Subscriptions Form Product Showcase 85 90 94 96 Electronics Showcase Ask Silicon Chip Market Centre Advertising Index 50A Motor Speed Controller – Page 78. May 2000  1