Fullscreen HTML5Med Res (??MB)HTML4

Contents Vol.22, No.6; June 2009 www.siliconchip.com.au SILICON CHIP Features 12 Mal’s Electric Vehicle Conversion At last, a fair-dinkum electric vehicle conversion using a 3-phase induction motor. And it’s fully road-registered – by Leo Simpson 58 Digital Radio Is Coming, Pt.4 Final article in the series describes the signal formats, compares DAB+ and DRM and looks at suitable antennas for DAB+ reception – by Alan Hughes 84 VoiceMe: A Voice-Activated Remote Control High-Current, High Voltage Smart Battery Capacity Meter – Page 20. Don’t reach for the remote; just speak and it will obey. It can control up to 10 functions on your TV, DVD player or whatever – by Rick Walters 91 Tech Support: The View From The Other Side How the major companies handle enquiries – by Barrie Smith Pro jects To Build 20 High-Current, High-Voltage Battery Capacity Meter Microcontroller-based device monitors the charge and discharge of lead-acid, Nicad & NiMH batteries at voltages from 9-60V and currents up to 80A. It can even log the data for later download to a PC – by Mauro Grassi 36 GPS Driver Module For The 6-Digit Clock, Pt.2 Easy-to-build unit uses the GlobalSat EM-408 GPS module and drives the 6-Digit Display Module to form a complete, dead-accurate clock – by Jim Rowe GPS Driver Module For The 6-Digit Clock – Page 36. Build A Beam-Break Flash Trigger – Page 62. 62 Build A Beam-Break Flash Trigger It mates with the Time Delay Photoflash Trigger described last month and triggers it when an object breaks a beam of infrared light – by Jim Rowe 68 Hand-Held Digital Audio Oscillator Compact unit features a blue backlit LCD and generates sine, square, triangle & sawtooth waveforms from 10Hz-30kHz – by Darian Lovett & Mauro Grassi 76 PICAXE Humidity Measuring Using The HopeRF HH10D HopeRF’s tiny HH10D module is a well-priced and calibrated humidity sensor that’s easy to interface to a PICAXE micro – by Stan Swan Hand-Held Digital Audio Oscillator – Page 68. Special Columns 30 Circuit Notebook (1) One-In-Five Timer; (2) External USB Supply For iPOD Touch; (3) Remote Control Extender For Foxtel; (4) Electronic Mousetrap; (5) 4-20mA Current Loop Tester; (6) Tester For Rotary Encoders; (7) Floating Current Source; (8) Modified Vehicle Voltage Monitor; (9) 20-LED Chaser Uses SCR Flipflop 44 Serviceman’s Log Dumbed down but stimulated by Rudd-bucks – by the Serviceman 82 Salvage It Gather up those discarded monitors before it’s too late 86 Vintage Radio The AWA 693P 3-Band 8-Transistor Portable – by Rodney Champness Departments   2 Publisher’s Letter   4 Mailbag siliconchip.com.au 57 Book Review 74 Product Showcase   80 96 99 102 Order Form Ask Silicon Chip Notes & Errata Market Centre PICAXE Humidity Measuring Using The HopeRF HH10D Sensor – Page 76. June une 2009  1