Silicon ChipContents - December 1993 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: The future of private motor vehicles
  4. Feature: Sound Blaster Grows Up by Darren Yates
  5. Feature: Electronic Engine Management; Pt.3 by Julian Edgar
  6. Project: Remote Controller For Garage Doors by Branco Justic
  7. Project: Build A Low-Voltage LED Stroboscope by Darren Yates
  8. Project: A Low-Cost 25W Amplifier Module by Darren Yates
  9. Feature: The LM1875 Audio Amplifier IC by Darren Yates
  10. Feature: Remote Control by Bob Young
  11. Feature: Programming The 68HC705C8 Microcontroller by Barry Rozema
  12. Serviceman's Log: Whingeing Willie & the bouncing TV set by The TV Serviceman
  13. Project: Peripherals For The Southern Cross Computer by Peter Crowcroft & Craig Jones
  14. Book Store
  15. Vintage Radio: My no-hassles radio museum by John Hill
  16. Project: Build A 1-Chip Melody Generator by Bernie Gilchrist
  17. Back Issues
  18. Feature: Amateur Radio by Garry Cratt, VK2YBX
  19. Order Form
  20. Product Showcase
  21. Feature: Index to Volume 6
  22. Market Centre
  23. Advertising Index
  24. Outer Back Cover

This is only a preview of the December 1993 issue of Silicon Chip.

You can view 29 of the 96 pages in the full issue, including the advertisments.

For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.

Articles in this series:
  • Electronic Engine Management; Pt.1 (October 1993)
  • Electronic Engine Management; Pt.2 (November 1993)
  • Electronic Engine Management; Pt.3 (December 1993)
  • Electronic Engine Management; Pt.4 (January 1994)
  • Electronic Engine Management; Pt.5 (February 1994)
  • Electronic Engine Management; Pt.6 (March 1994)
  • Electronic Engine Management; Pt.7 (April 1994)
  • Electronic Engine Management; Pt.8 (May 1994)
  • Electronic Engine Management; Pt.9 (June 1994)
  • Electronic Engine Management; Pt.10 (July 1994)
  • Electronic Engine Management; Pt.11 (August 1994)
  • Electronic Engine Management; Pt.12 (September 1994)
  • Electronic Engine Management; Pt.13 (October 1994)
Items relevant to "Build A Low-Voltage LED Stroboscope":
  • Silicon Chip article scan, December 1993 - Low-Voltage LED Stroboscope (AUD $10.00)
  • Low-Voltage LED Stroboscope PCB patterns (PDF download) [04112931-3] (Free)
Items relevant to "A Low-Cost 25W Amplifier Module":
  • Low-Cost 25A Audio Amplifier Module PCB pattern (PDF download) [01112931] (Free)
Articles in this series:
  • Remote Control (October 1989)
  • Remote Control (November 1989)
  • Remote Control (December 1989)
  • Remote Control (January 1990)
  • Remote Control (February 1990)
  • Remote Control (March 1990)
  • Remote Control (April 1990)
  • Remote Control (May 1990)
  • Remote Control (June 1990)
  • Remote Control (August 1990)
  • Remote Control (September 1990)
  • Remote Control (October 1990)
  • Remote Control (November 1990)
  • Remote Control (December 1990)
  • Remote Control (April 1991)
  • Remote Control (July 1991)
  • Remote Control (August 1991)
  • Remote Control (October 1991)
  • Remote Control (April 1992)
  • Remote Control (April 1993)
  • Remote Control (November 1993)
  • Remote Control (December 1993)
  • Remote Control (January 1994)
  • Remote Control (June 1994)
  • Remote Control (January 1995)
  • Remote Control (April 1995)
  • Remote Control (May 1995)
  • Remote Control (July 1995)
  • Remote Control (November 1995)
  • Remote Control (December 1995)
Articles in this series:
  • Programming The Motorola 68HC705C8 (July 1993)
  • Programming the Motorola 68HC705C8 (October 1993)
  • Programming The 68HC705C8 Microcontroller (December 1993)
Articles in this series:
  • Amateur Radio (November 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (February 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (January 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (February 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (July 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (January 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (January 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (January 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (February 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (January 1995)
  • CB Radio Can Now Transmit Data (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • Stressless Wireless (October 2004)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Dorji 433MHz Wireless Data Modules (January 2012)
Vol.6, No.12; December 1993 FEATURES FEATURES FIT YOUR GARAGE door with remote control by building this up-to-date circuit. It features a UHF keyring transmitter & a receiver that’s built around a pre-aligned front-end module. Turn to page 16.   4 Sound Blaster Grows Up by Darren Yates 16-bit CD-quality stereo sound card reviewed   8 Electronic Engine Management, Pt.3 by Julian Edgar Changing the engine management software 40 The LM1875 Audio Amplifier IC by Darren Yates Features in-built thermal & short circuit protection 53 Programming The 68HC705C8 Microcontroller by Barry Rozema Lesson 3: answers to exercises & the direct addressing mode 90 Index To Volume 6, Jan–Dec. 1993 All the year’s features & projects PROJECTS PROJECTS TO TO BUILD BUILD WANT TO MEASURE the speed of rotating machinery. This stroboscope uses high-intensity LEDs as its light source & gives a digital readout of the speed in RPM – see page 22. 16 Remote Controller For Garage Doors by Branco Justic It’s easy to build & there are no alignment hassles 22 Build A Low-Voltage LED Stroboscope by Darren Yates A digital readout shows the speed in RPM 32 A Low-Cost 25W Amplifier Module by Darren Yates Compact module is based on a single IC 62 Peripherals For The Southern Cross Computer by Peter Crowcroft An 8x8 LED matrix display & an EPROM emulator 80 Build A 1-Chip Melody Generator by Bernie Gilchrist Choose from six different melodies or a medley of tunes SPECIAL SPECIAL COLUMNS COLUMNS 42 Remote Control by Bob Young Servicing your R/C transmitter BASED ON A SINGLE IC, this compact audio amplifier module can deliver 25W RMS into an 8Ω load & can be powered from single or dual supply rails. Construction starts on page 32. 56 Serviceman’s Log by the TV Serviceman Whingeing Willie & the bouncing TV set 70 Vintage Radio by John Hill My no-hassles radio museum 84 Amateur Radio by Garry Cratt, VK2YBX A look at selective tone calling DEPARTMENTS DEPARTMENTS   2 36 82 86 Publisher’s Letter Circuit Notebook Back Issues Order Form 87 92 95 96 Product Showcase Ask Silicon Chip Market Centre Advertising Index ONE OF THE BEST ways of modifying an electronic engine management system is to change the software. This month, we take a look at the practicalities of chip re-writing – see page 8. December 1993  1