Silicon ChipMarket Centre - May 2025 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Using WinCompose for typing special symbols
  4. Feature: Digital Scent and Taste by Dr David Maddison, VK3DSM
  5. Project: Versatile Battery Checker by Tim Blythman
  6. Feature: Electronex 2025 by Noel Grey (AEE)
  7. Project: Tool Safety Timer by Phil Prosser
  8. Project: RGB LED Analog Clock by Nicholas Vinen
  9. PartShop
  10. Project: USB Power Adaptor by Nicholas Vinen
  11. PartShop
  12. Review: RNBD451 Bluetooth LE Module by Tim Blythman
  13. Feature: Precision Electronics, Part 7: ADCs by Andrew Levido
  14. Subscriptions
  15. Serviceman's Log by Various
  16. Vintage Radio: Emerson 888 mini-mantel set by Ian Batty
  17. Market Centre
  18. Advertising Index
  19. Notes & Errata: Pico/2/Computer, April 2025; Surf Sound Simulator, November 2024
  20. Outer Back Cover

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

You can view 54 of the 112 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 "Versatile Battery Checker":
  • Versatile Battery Checker PCB [11104251] (AUD $5.00)
  • PIC16F18146-I/SO programmed for the Versatile Battery Checker [1110425A.HEX] (Programmed Microcontroller, AUD $10.00)
  • 1.3-inch blue OLED with 4-pin I²C interface (Component, AUD $15.00)
  • 1.3-inch white OLED with 4-pin I²C interface (Component, AUD $15.00)
  • Versatile Battery Checker kit (Component, AUD $65.00)
  • Versatile Battery Checker front panel [11104252] (PCB, AUD $7.50)
  • Versatile Battery Checker firmware (Software, Free)
  • Versatile Battery Checker PCB pattern (PDF download) [11104251] (Free)
  • Versatile Battery Checker panel drilling diagram (Panel Artwork, Free)
Items relevant to "Tool Safety Timer":
  • Tool Safety Timer PCB [10104251] (AUD $5.00)
  • PIC16F15214-I/P programmed for the Tool Safety Timer [1010425A.HEX] (Programmed Microcontroller, AUD $10.00)
  • Tool Safety Timer firmware (Software, Free)
  • Tool Safety Timer PCB pattern (PDF download) [10104251] (Free)
  • Tool Safety Timer panel artwork & drilling diagrams (Free)
Items relevant to "RGB LED Analog Clock":
  • RGB LED 'Analog' Clock PCB (19101251) (AUD $15.00)
  • PIC16F18146-I/SO programmed for the RGB LED 'Analog' Clock [1910125A.HEX] (Programmed Microcontroller, AUD $10.00)
  • BZ-121 miniature GNSS receiver (Component, AUD $30.00)
  • RGB LED 'Analog' Clock kit (Component, AUD $65.00)
  • RGB LED 'Analog' Clock firmware (Software, Free)
  • RGB LED 'Analog' Clock PCB pattern (PDF download) (19101251) (Free)
Items relevant to "USB Power Adaptor":
  • USB Power Adaptor PCB [18101251] (AUD $2.50)
  • USB Power Adaptor kit (Component, AUD $10.00)
  • USB Power Adaptor PCB pattern (PDF download) [18101251] (Free)
Articles in this series:
  • Precision Electronics, Part 1 (November 2024)
  • Precision Electronics, Part 2 (December 2024)
  • Precision Electronics, part one (January 2025)
  • Precision Electronics, Part 3 (January 2025)
  • Precision Electronics, part two (February 2025)
  • Precision Electronics, Part 4 (February 2025)
  • Precision Electronics, Part 5 (March 2025)
  • Precision Electronics, part three (March 2025)
  • Precision Electronics, part four (April 2025)
  • Precision Electronics, Part 6 (April 2025)
  • Precision Electronics, Part 7: ADCs (May 2025)
  • Precision Electronics, part five (May 2025)
  • Precision Electronics, part six (June 2025)

Purchase a printed copy of this issue for $13.00.

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 PRODUCTION 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 Mains Power-Up Sequencer February-March 2024 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. Hard-To-Get Parts SC6871: $95 siliconchip.au/Series/412 The critical components required to build the Sequencer such as the PCB, micro etc. Other components need to be sourced separately. Lazer.Security WE OFFER KITS, LEDs, LED assemblies and all sorts of quality electronic components, 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 May 2025  111