Silicon ChipContents - September 2004 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: High voltage warnings err on the side of caution
  4. Feature: Voice Over IP (VoIP) For Beginners by Ross Tester
  5. Feature: WiFry: Cooking Up 2.4GHz Antennas by Stan Swan
  6. Project: Bed Wetting Alert Sounder For Toddlers by John Clarke
  7. Project: You’ve Had Your Fun – Now Make A Doorbell by John Clarke
  8. Project: PICAXE The Red-Nosed Reindeer by Clive Seager
  9. Project: Build A Programmable Robot by Thomas Scarborough
  10. Project: Oh No! Not Another CFL Inverter by Design by Branko Justic, words by Stephen David
  11. Vintage Radio: This Little Nipper was a dog by Rodney Champness
  12. Back Issues
  13. Advertising Index
  14. Outer Back Cover

This is only a preview of the September 2004 issue of Silicon Chip.

You can view 16 of the 96 pages in the full issue, including the advertisments.

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Items relevant to "Bed Wetting Alert Sounder For Toddlers":
  • Bed Wetting Alert PCB patterns (PDF download) [15109041/2] (Free)
Items relevant to "You’ve Had Your Fun – Now Make A Doorbell":
  • Doorbell Sounder PCB pattern (PDF download) [15109043] (Free)
Items relevant to "PICAXE The Red-Nosed Reindeer":
  • PICAXE-08 BASIC source code for the Red-nosed Reindeer (Software, Free)
Items relevant to "Build A Programmable Robot":
  • PICAXE-08 BASIC source code for the Programmable Robot (Software, Free)
  • Programmable Robot PCB pattern (PDF download) [07209041] (Free)

Purchase a printed copy of this issue for $10.00.
Contents Vol.17, No.9; September 2004 FEATURES 8 Voice Over IP (VoIP) For Beginners www.siliconchip.com.au Cooking Up 2.4GHz WiFi Antennas – Page 14. A computer, an Internet connection and a headset or “netphone” are all you need to make long distance phone calls for free – by Ross Tester 14 WiFry: Cooking Up 2.4GHz Antennas Turn a $10 cooking scoop into a high-performance WiFi antenna for extended signal range – by Stan Swan PROJECTS TO BUILD 30 Bed Wetting Alert Sounder For Toddlers Bed Wetting Alert For Toddlers – Page 30. Keep the tide out with this effective bed wetting alarm. You just add some circuitry to Jaycar’s “Secret Farter” and make a sensor – by John Clarke 37 You’ve Had Your Fun – Now Make A Doorbell OK, you’ve shocked Aunt Martha and embarrassed your granny with your fiendish Secret Farter. Now turn it into a useful doorbell – by John Clarke 40 PICAXE The Red-Nosed Reindeer It’s based on the new PICAXE-08M chip, flashes its nose and eyes and plays popular Christmas tunes and mobile phone ring tones! – by Clive Seager 64 Build A Programmable Robot Here’s a great school project! This robot features full manoeuvrability, speed control, bump-and-respond logic and programmable sound and light sensing. Turn it loose and watch it head for the light – by Thomas Scarborough 76 Oh No! Not Another CFL Inverter Yep, another one but this one’s really simple. It’s powered from 12V and is just the shot for running multiple compact fluorescent lights (CFLs) or even a small colour TV set – by Graeme Matthewson SPECIAL COLUMNS PICAXE The Red-Nosed Reindeer – Page 40. 24 Circuit Notebook (1) USB-Powered PIC Programmer; (2) Economical Desk Lamp For Camping; (3) Quartz Clock Flasher Protects Equipment; (4) Two Switches Share One Pin; (5) Multi-Level Lock System; (6) PICAXE-Controlled Battery Charger 56 Serviceman’s Log You have to be versatile in this game – by the TV Serviceman 80 Vintage Radio This Little Nipper was a dog – by Rodney Champness DEPARTMENTS 2 4 53 55 71 Publisher’s Letter Mailbag Product Showcase Silicon Chip Weblink Order Form siliconchip.com.au 86 89 94 96 Ask Silicon Chip Notes & Errata Market Centre Ad Index Build A Programmable Robot – Page 64. September 2004  1