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Contents Vol.12, No.5; May 1999 FEATURES 3 A Web Site That’s Out Of This World Take a look at www.terraserver.microsoft.com – by Ross Tester 8 Model Plane Flies The Atlantic It’s only a model but this Australian-designed aircraft has flown across the Atlantic – by Bob Young 72 SPECIAL OFFER: Low-Cost Internet Access No time limits, no download limits, no fine print – and no hassles 80 Getting Started With Linux; Pt.3 Configuring Linux as a file and printer sharer and as a router for shared Internet access – by Bob Dyball X-Y Table With Stepper Motor Control – Page 24. PROJECTS TO BUILD 16 The Line Dancer Robot This cute little robot is easy to build and makes a great school or fun project – by Andersson Nguyen 24 An X-Y Table With Stepper Motor Control; Pt.1 Use it to control a router or for automatically drilling PC boards – by Rick Walters & Ken Ferguson 37 Three Electric Fence Testers Check your electric fence without getting a nasty shock – by John Clarke 56 Heart Of LEDS Build it for Mother’s Day. It has a microcontroller which drives 30 LEDs in a matrix, arranged in the shape of a heart – by Les Grant 61 Build A Carbon Monoxide Alarm Easy-to-build unit has two warning levels, detects CO gas concentrations down to 200ppm – by John Clarke Three Electric Fence Testers – Page 37. Just For Mother’s Day: Heart Of LEDs – Page 56. SPECIAL COLUMNS 29 Serviceman’s Log Life’s tough without TimTams – by the TV Serviceman 86 Vintage Radio Restoring the butchered set – by Rodney Champness DEPARTMENTS 2 44 53 70 74 Publisher’s Letter Order Form Product Showcase Mailbag Circuit Notebook 90 93 94 96 Ask Silicon Chip Notes & Errata Market Centre Advertising Index Build A Carbon Monoxide Alarm – Page 61. MAY 1999  1