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Contents Vol.13, No.10; October 2000 FEATURES 4 DrDAQ: It Turns Your PC Into A Science Lab Use it for science experiments or as a general-purpose, easy-to-use data logger – by Peter Smith 10 Structured Data Cabling For The Home Bringing your home into the 21st century – by Ross Tester 70 Drive By Wire: Electronic Throttle Control, Pt.2 A look at the control system logic – by Julian Edgar 78 Review: Altronic’s Aussie-Made PA Amplifiers Guitar Jammer For Jam Sessions – Page 22. They’re even exporting these beauties to Asia – by Ross Tester PROJECTS TO BUILD 22 Guitar Jammer For Practice & Jam Sessions Build it and jam along with your favourite CD, or use it to practice without disturbing others – by Leo Simpson & Peter Smith Booze Buster Breath Tester – Page 28. 28 Booze Buster Breath Tester Use this fun device to test your soberity, err sobrity, err how much you’ve had to drink but don’t rely on it to drive – by Ross Tester 38 I Spy With My Little Eye . . . Peer into hidden nooks & crannies with this tiny inspection camera built into a flexible wand – by Ross Tester 53 Installing A Free-Air Subwoofer In Your Car You don’t need to take up lots of room with a big box; this uses the boot as the enclosure. And it works! – by Julian Edgar 60 Protoboards: The Easy Way Into Electronics Use a protoboard to build a siren & alarm timer – by Leo Simpson 66 Fuel Mixture Display For Cars, Pt.2 All the construction details & calibration procedures – by John Clarke SPECIAL COLUMNS 34 Serviceman’s Log Two Teacs before bedtime – by the TV Serviceman Wand-Mounted Inspection Camera – Page 38. 82 Vintage Radio A battery eliminator & a simple servicing aid – by Rodney Champness DEPARTMENTS 2 9 58 74 77 Publisher’s Letter Mailbag Circuit Notebook Product Showcase Electronics Showcase 81 88 90 94 96 Subscriptions Form Ask Silicon Chip Notes & Errata Market Centre Advertising Index Installing A Free-Air Subwoofer In Your Car – Page 53. October 2000  1