Silicon ChipMarket Centre - October 2025 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: We need Intel
  4. Feature: Autonomous Vehicles by Dr David Maddison, VK3DSM
  5. Project: Digital Preamp & Crossover by Phil Prosser
  6. Feature: HomeAssistant, Part 2 by Richard Palmer
  7. Subscriptions
  8. Project: Vacuum Controller by John Clarke
  9. Feature: Finding Bargain Speakers by Julian Edgar
  10. Project: Dual Train Controller by Les Kerr
  11. Project: Pendant Speaker, Part 2 by Julian Edgar
  12. Serviceman's Log: Large animals, laptops & Laphroaig by Various
  13. PartShop
  14. Vintage Radio: Vintage Reinartz 2 TRF Receiver by Philip Fitzherbert & Ian Batty
  15. PartShop
  16. Market Centre
  17. Advertising Index
  18. Notes & Errata: 433MHz Transmitter, April 2025
  19. Outer Back Cover

This is only a preview of the October 2025 issue of Silicon Chip.

You can view 34 of the 104 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.

Items relevant to "Digital Preamp & Crossover":
  • Digital Preamplifier main PCB [01107251] (AUD $30.00)
  • Digital Preamplifier front panel control PCB [01107252] (AUD $2.50)
  • Digital Preamplifier power supply PCB [01107253] (AUD $7.50)
  • PIC32MX270F256D-50I/PT‎ programmed for the Digital Preamplifier/Crossover [0110725A.HEX] (Programmed Microcontroller, AUD $20.00)
  • Firmware for the Digital Preamplifier/Crossover (Software, Free)
  • Digital Preamplifier/Crossover PCB patterns (PDF download) [01107251-3] (Free)
  • 3D printing files for the Digital Preamplifier/Crossover (Panel Artwork, Free)
  • Digital Preamplifier/Crossover case drilling diagrams (Panel Artwork, Free)
Items relevant to "HomeAssistant, Part 2":
  • HomeAssistant YAML scripts by Richard Palmer (Software, Free)
Articles in this series:
  • HomeAssistant, Part 1 (September 2025)
  • HomeAssistant, Part 2 (October 2025)
Items relevant to "Vacuum Controller":
  • Vacuum Controller main PCB [10109251] (AUD $10.00)
  • Vacuum Controller blast gate adaptor PCB [10109252] (AUD $2.50)
  • PIC16F1459-I/P programmed for the Vacuum Controller (1010925A.HEX) (Programmed Microcontroller, AUD $10.00)
  • Vacuum Controller software (Free)
  • Vacuum Controller PCB patterns (PDF download) [10109251-2] (Free)
  • Vacuum Controller panel artwork & drilling diagrams (Free)
Items relevant to "Dual Train Controller":
  • Battery Powered Model Train TH receiver PCB [09110242] (AUD $2.50)
  • Battery Powered Model Train SMD receiver PCB [09110243] (AUD $2.50)
  • Battery Powered Model Train charger PCB [09110244] (AUD $2.50)
  • PIC16F1455-I/P programmed for the Battery-Powered Model Train TH receiver [0911024R/S/T.HEX] (Programmed Microcontroller, AUD $10.00)
  • PIC16F1455-I/SL programmed for the Battery-Powered Model Train SMD receiver [0911024R.HEX] (Programmed Microcontroller, AUD $10.00)
  • PIC12F617-I/P programmed for the Battery-Powered Model Train charger [0911024C.HEX] (Programmed Microcontroller, AUD $10.00)
  • PIC16F1455-I/P programmed for the Dual Train Controller transmitter (0911024D.HEX) (Programmed Microcontroller, AUD $10.00)
  • Software for the Battery Powered Model Railway project (Free)
  • Battery Powered Model Train PCB patterns (PDF download) [09110241-4] (Free)
  • Dual Train Controller PCB [09110245] (AUD $3.00)
  • Software for the Dual Train Controller project (Free)
Articles in this series:
  • Battery-Powered Model Train (January 2025)
  • Dual Train Controller (October 2025)
Articles in this series:
  • Pendant Speaker, Part 1 (September 2025)
  • Pendant Speaker, Part 2 (October 2025)

Purchase a printed copy of this issue for $14.00.

MARKET CENTRE Advertise your product or services here in Silicon Chip KIT ASSEMBLY & REPAIR FOR SALE DAVE THOMPSON (the Serviceman from Silicon Chip) is available to help you with kit assembly, project troubleshooting, general electronics and custom design work. No job too small. Based in Christchurch, New Zealand, but service available Australia/NZ wide. Email dave<at>davethompson.co.nz LEDsales KEITH RIPPON KIT ASSEMBLY & REPAIR: * Australia & New Zealand; * Small production runs. Phone Keith: 0409 662 794 keith.rippon<at>gmail.com PCB MANUFACTURE: single to multilayer. Bare board tested. One-offs to any quantity. 48 hour service. Artwork design. Excellent prices. Check out our specials: www.ldelectronics.com.au August-September 2025 LEDS, BRAND NAME AND GENERIC LEDs, filament LEDs, LED drivers, heatsinks, power supplies, kits and modules, components, breadboards, hardware, magnets. Please visit www. ledsales.com.au PMD WAY offers (almost) everything for the electronics enthusiast – with full warranty, technical support and free delivery worldwide. Visit pmdway.com to get started. Lazer.Security PCB PRODUCTION USB-C Power Monitor Short-Form Kit SC7489: $60 siliconchip.au/Series/445 This kit includes all non-optional parts, except the case, lithium-ion cell and glue. It does include the FFC (flat flexible cable) PCB. WE HAVE QUALITY LED’S on sale, Driver sub-assemblies, new kits and all sorts of electronic components, both through hole and SMD at very competitive prices. check out the latest deals at www.lazer.com.au ADVERTISING IN MARKET CENTRE Classified Ad Rates: $32.00 for up to 20 words (punctuation not charged) plus $1.20 for each additional word. Display ads in Market Centre (minimum 2cm deep, maximum 10cm deep): $82.50 per column centimetre per insertion. All prices include GST. Closing date: 5 weeks prior to month of sale. To book, email the text to silicon<at>siliconchip.com.au and include your name, address & credit card details, or phone (02) 9939 3295. WARNING! Silicon Chip magazine regularly describes projects which employ a mains power supply or produce high voltage. All such projects should be considered dangerous or even lethal if not used safely. Readers are warned that high voltage wiring should be carried out according to the instructions in the articles. When working on these projects use extreme care to ensure that you do not accidentally come into contact with mains AC voltages or high voltage DC. If you are not confident about working with projects employing mains voltages or other high voltages, you are advised not to attempt work on them. Silicon Chip Publications Pty Ltd disclaims any liability for damages should anyone be killed or injured while working on a project or circuit described in any issue of Silicon Chip magazine. Devices or circuits described in Silicon Chip may be covered by patents. Silicon Chip disclaims any liability for the infringement of such patents by the manufacturing or selling of any such equipment. Silicon Chip also disclaims any liability for projects which are used in such a way as to infringe relevant government regulations and by-laws. Advertisers are warned that they are responsible for the content of all advertisements and that they must conform to the Competition & Consumer Act 2010 or as subsequently amended and to any governmental regulations which are applicable. siliconchip.com.au Australia's electronics magazine October 2025  103