Silicon ChipPrinter ink costs more than gold! - December 2024 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Printer ink costs more than gold!
  4. Subscriptions
  5. Feature: Undersea Communications by Dr David Maddison
  6. Project: Capacitor Discharger by Andrew Levido
  7. Feature: Precision Electronics, Part 2 by Andrew Levido
  8. Project: Compact HiFi Headphone Amp by Nicholas Vinen
  9. Project: Automatic night light by Tim Blythman
  10. Project: WiFi weather logger by Tim Blythman
  11. Review: Raspberry Pi Pico 2 by Tim Blythman
  12. Project: The Pico Computer by Tim Blythman
  13. Project: Variable Speed Drive Mk2, Part 2 by Andrew Levido
  14. PartShop
  15. Serviceman's Log: All washed up by Dave Thompson
  16. Vintage Radio: Dallas Arbiter Fuzz Face guitar pedal by Brandon Speedie
  17. Vintage Radio: MicroBee 256TC Computer by Don Peterson
  18. Market Centre
  19. Advertising Index
  20. Outer Back Cover

This is only a preview of the December 2024 issue of Silicon Chip.

You can view 40 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 "Capacitor Discharger":
  • Capacitor Discharger PCB [9047-01] (AUD $5.00)
  • AOT10N60 High-voltage Mosfet for the 230VAC Fan Speed Controllers (Component, AUD $5.00)
  • Capacitor Discharger short-form kit (Component, AUD $30.00)
  • Capacitor Discharger PCB pattern (PDF download) [9047-01] (Free)
  • Capacitor Discharger drilling diagrams (Panel Artwork, Free)
Articles in this series:
  • Precision Electronics, Part 1 (November 2024)
  • Precision Electronics, Part 1 (November 2024)
  • Precision Electronics, Part 2 (December 2024)
  • Precision Electronics, Part 2 (December 2024)
  • Precision Electronics, Part 3 (January 2025)
  • Precision Electronics, part one (January 2025)
  • 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 4 (February 2025)
  • Precision Electronics, part two (February 2025)
  • Precision Electronics, part three (March 2025)
  • Precision Electronics, part three (March 2025)
  • Precision Electronics, Part 5 (March 2025)
  • Precision Electronics, Part 5 (March 2025)
  • Precision Electronics, Part 6 (April 2025)
  • Precision Electronics, Part 6 (April 2025)
  • Precision Electronics, part four (April 2025)
  • Precision Electronics, part four (April 2025)
  • Precision Electronics, part five (May 2025)
  • Precision Electronics, Part 7: ADCs (May 2025)
  • Precision Electronics, part five (May 2025)
  • Precision Electronics, Part 7: ADCs (May 2025)
  • Precision Electronics, part six (June 2025)
  • Precision Electronics, part six (June 2025)
Items relevant to "Compact HiFi Headphone Amp":
  • Compact HiFi Headphone Amplifier PCB [01103241] (AUD $7.50)
  • Dual Horizontal PCB-mounting RCA sockets (white/red) [RCA-210] (Component, AUD $2.50)
  • Compact HiFi Headphone Amplifier kit (Component, AUD $70.00)
  • Compact HiFi Headphone Amplifier PCB pattern (PDF download) [01103241] (Free)
  • Compact HiFi Headphone Amplifier panel drilling diagram (Panel Artwork, Free)
Articles in this series:
  • Compact HiFi Headphone Amp (December 2024)
  • Compact HiFi Headphone Amp (December 2024)
  • Compact HiFi Headphone Amp (January 2025)
  • Compact HiFi Headphone Amp (January 2025)
Articles in this series:
  • Wired Infrared Remote Extender (May 2024)
  • Symbol USB Keyboard (May 2024)
  • Wired Infrared Remote Extender (May 2024)
  • Thermal Fan Controller (May 2024)
  • Symbol USB Keyboard (May 2024)
  • Thermal Fan Controller (May 2024)
  • Self Toggling Relay (June 2024)
  • Self Toggling Relay (June 2024)
  • Arduino Clap Light (June 2024)
  • Arduino Clap Light (June 2024)
  • Lava Lamp Display (July 2024)
  • Digital Compass (July 2024)
  • Digital Compass (July 2024)
  • Lava Lamp Display (July 2024)
  • JMP009 - Stroboscope and Tachometer (August 2024)
  • JMP007 - Ultrasonic Garage Door Notifier (August 2024)
  • JMP009 - Stroboscope and Tachometer (August 2024)
  • JMP007 - Ultrasonic Garage Door Notifier (August 2024)
  • IR Helper (September 2024)
  • IR Helper (September 2024)
  • No-IC Colour Shifter (September 2024)
  • No-IC Colour Shifter (September 2024)
  • JMP012 - WiFi Relay Remote Control (October 2024)
  • JMP012 - WiFi Relay Remote Control (October 2024)
  • JMP015 - Analog Servo Gauge (October 2024)
  • JMP015 - Analog Servo Gauge (October 2024)
  • JMP013 - Digital spirit level (November 2024)
  • JMP013 - Digital spirit level (November 2024)
  • JMP014 - Analog pace clock & stopwatch (November 2024)
  • JMP014 - Analog pace clock & stopwatch (November 2024)
  • WiFi weather logger (December 2024)
  • Automatic night light (December 2024)
  • WiFi weather logger (December 2024)
  • Automatic night light (December 2024)
  • BIG LED clock (January 2025)
  • Gesture-controlled USB lamp (January 2025)
  • Gesture-controlled USB lamp (January 2025)
  • BIG LED clock (January 2025)
  • Transistor tester (February 2025)
  • Wireless flashing LEDs (February 2025)
  • Transistor tester (February 2025)
  • Wireless flashing LEDs (February 2025)
  • Continuity Tester (March 2025)
  • RF Remote Receiver (March 2025)
  • Continuity Tester (March 2025)
  • RF Remote Receiver (March 2025)
  • Discrete 555 timer (April 2025)
  • Weather monitor (April 2025)
  • Discrete 555 timer (April 2025)
  • Weather monitor (April 2025)
Items relevant to "WiFi weather logger":
  • Firmware for JMP016 - WiFi Weather Logger (Software, Free)
Articles in this series:
  • Wired Infrared Remote Extender (May 2024)
  • Symbol USB Keyboard (May 2024)
  • Wired Infrared Remote Extender (May 2024)
  • Thermal Fan Controller (May 2024)
  • Symbol USB Keyboard (May 2024)
  • Thermal Fan Controller (May 2024)
  • Self Toggling Relay (June 2024)
  • Self Toggling Relay (June 2024)
  • Arduino Clap Light (June 2024)
  • Arduino Clap Light (June 2024)
  • Lava Lamp Display (July 2024)
  • Digital Compass (July 2024)
  • Digital Compass (July 2024)
  • Lava Lamp Display (July 2024)
  • JMP009 - Stroboscope and Tachometer (August 2024)
  • JMP007 - Ultrasonic Garage Door Notifier (August 2024)
  • JMP009 - Stroboscope and Tachometer (August 2024)
  • JMP007 - Ultrasonic Garage Door Notifier (August 2024)
  • IR Helper (September 2024)
  • IR Helper (September 2024)
  • No-IC Colour Shifter (September 2024)
  • No-IC Colour Shifter (September 2024)
  • JMP012 - WiFi Relay Remote Control (October 2024)
  • JMP012 - WiFi Relay Remote Control (October 2024)
  • JMP015 - Analog Servo Gauge (October 2024)
  • JMP015 - Analog Servo Gauge (October 2024)
  • JMP013 - Digital spirit level (November 2024)
  • JMP013 - Digital spirit level (November 2024)
  • JMP014 - Analog pace clock & stopwatch (November 2024)
  • JMP014 - Analog pace clock & stopwatch (November 2024)
  • WiFi weather logger (December 2024)
  • Automatic night light (December 2024)
  • WiFi weather logger (December 2024)
  • Automatic night light (December 2024)
  • BIG LED clock (January 2025)
  • Gesture-controlled USB lamp (January 2025)
  • Gesture-controlled USB lamp (January 2025)
  • BIG LED clock (January 2025)
  • Transistor tester (February 2025)
  • Wireless flashing LEDs (February 2025)
  • Transistor tester (February 2025)
  • Wireless flashing LEDs (February 2025)
  • Continuity Tester (March 2025)
  • RF Remote Receiver (March 2025)
  • Continuity Tester (March 2025)
  • RF Remote Receiver (March 2025)
  • Discrete 555 timer (April 2025)
  • Weather monitor (April 2025)
  • Discrete 555 timer (April 2025)
  • Weather monitor (April 2025)
Items relevant to "The Pico Computer":
  • Pico Computer PCB [07112234] (AUD $5.00)
  • PWM Audio PCB [07112238] (AUD $2.50)
  • ESP-PSRAM64 64Mb (8MB) PSRAM chip (SOIC-8) (Component, AUD $5.00)
  • DS3231MZ real-time clock IC (SOIC-8) (Component, AUD $8.00)
  • DS3231 real-time clock IC (SOIC-16) (Component, AUD $7.50)
  • Pico Computer kit (Component, AUD $40.00)
  • PWM Audio Module kit (Component, AUD $10.00)
  • Pico Computer kit with Pico (Component, AUD $50.00)
  • Digital Video Terminal kit (Component, AUD $65.00)
  • Pico Computer front panel (07112235) (PCB, AUD $2.50)
  • Pico Computer demonstration software (Free)
  • Pico Computer & PWM Audio Module PCB patterns (PDF download) [07112234, 07112238] (Free)
  • Pico Computer panel cutting diagrams (Panel Artwork, Free)
Items relevant to "Variable Speed Drive Mk2, Part 2":
  • Mk2 VSD PCB [11111241 or 9048-02] (AUD $15.00)
  • STM32G030K6T6 programmed for the VSD Mk2 [1111124A] (Programmed Microcontroller, AUD $10.00)
  • Firmware for the VSD Mk2 (Software, Free)
  • VSD Mk2 PCB pattern (PDF download) [11111241] (Free)
  • Mk2 VSD drilling & cutting diagrams (Panel Artwork, Free)
Articles in this series:
  • Variable Speed Drive Mk2, Part 1 (November 2024)
  • Variable Speed Drive Mk2, Part 1 (November 2024)
  • Variable Speed Drive Mk2, Part 2 (December 2024)
  • Variable Speed Drive Mk2, Part 2 (December 2024)

Purchase a printed copy of this issue for $13.00.

SILICON SILIC CHIP www.siliconchip.com.au Publisher/Editor Nicholas Vinen Technical Editor John Clarke – B.E.(Elec.) Technical Staff Bao Smith – B.Sc. Tim Blythman – B.E., B.Sc. Advertising Enquiries (02) 9939 3295 adverts<at>siliconchip.com.au Regular Contributors Allan Linton-Smith Dave Thompson David Maddison – B.App.Sc. (Hons 1), PhD, Grad.Dip.Entr.Innov. Geoff Graham Associate Professor Graham Parslow Dr Hugo Holden – B.H.B, MB.ChB., FRANZCO Ian Batty – M.Ed. Phil Prosser – B.Sc., B.E.(Elec.) Cartoonist Louis Decrevel loueee.com Founding Editor (retired) Leo Simpson – B.Bus., FAICD Silicon Chip is published 12 times a year by Silicon Chip Publications Pty Ltd. ACN 626 922 870. ABN 20 880 526 923. All material is copyright ©. No part of this publication may be reproduced without the written consent of the publisher. Subscription rates (Australia only) 6 issues (6 months): $70 12 issues (1 year): $130 24 issues (2 years): $245 Online subscription (Worldwide) 6 issues (6 months): $52.50 12 issues (1 year): $100 24 issues (2 years): $190 For overseas rates, see our website or email silicon<at>siliconchip.com.au * recommended & maximum price only Editorial office: Unit 1 (up ramp), 234 Harbord Rd, Brookvale, NSW 2100. Postal address: PO Box 194, Matraville, NSW 2036. Phone: (02) 9939 3295. ISSN: 1030-2662 Printing and Distribution: 24-26 Lilian Fowler Pl, Marrickville 2204 2 Silicon Chip Editorial Viewpoint Printer ink costs more than gold! Many printer companies have been milking their customers for years. Did you realise that many printers, especially ink jets, are sold below their cost? The goal is to lock you into buying their overpriced ink, making you spend more (a lot more) in the long run. I bet if this was made clear to prospective buyers, they would be a lot less interested in those ‘cheap’ printers. If you open up a $30+ printer cartridge for an entrylevel printer, you might find a few millilitres of ink, if that. If you calculate the cost per weight, it’s more than gold! This has given rise to a large third-party ink industry. Third-party cartridges can be a fraction of the cost of the ‘official’ ones and, in my experience, work just as well – at least for day-to-day tasks like printing letters, invoices, bills, contracts etc. But the printer companies do everything they can to make it impossible for you to use those cartridges. For years now, they have been incorporating encryption chips in their cartridges to prevent third parties from making compatible devices. It hasn’t really worked, but they certainly have tried. This is one of the reasons that if you have a printer, and it works, you should never ‘upgrade’ its firmware. Most firmware ‘upgrades’ for printers are actually just attempts to block your use of third-party ink, and it should be your choice which ink you use in the printer you paid for. I have ignored the “please upgrade the firmware” messages on our printers for years now and have thankfully had no problem using third-party ink. Until recently, for our home printer, I was paying $8 for a full set of four CMYK cartridges, including delivery! The price has now gone up to about $12, but it’s still a great deal compared to – I kid you not – $150 for the printer brand equivalent. What a ripoff! Who would even consider paying that much? You’d have to be desperate! That’s for a set of cartridges that would last you maybe a couple of months of modest usage. If you do a lot of printing and want to use an ink jet, you’re better off buying one of the ink tank printers. They cost more up-front, of course, but the ink lasts a really long time (years), there’s no ink ‘DRM’ and even the genuine ink is not that expensive. So they are a good option, although I hear that they are not without their problems. Apparently, Brother laser printers are a good choice, especially if you don’t need colour. Thermal label printers aren’t much better, except the ‘DRM’ isn’t on the ink (because there is none), it’s on the paper. Older label printers are actually worth a lot of money on the second-hand market (and are hard to find!) because you can use any paper you want, and again, the third-party paper is a fraction the cost of the paper you get from the original brand. I sincerely hope our label printers don’t pack it in because I would refuse to pay the extortionate prices that those companies charge for their labels. Sure, the quality of the originals is a little better than the third-party ones, but when you’re using them as shipping labels, who cares? We pay $60 for 8 rolls of 220 labels for our printer, which works out to 3.4¢ per label – that seems reasonable. The original brand labels have an RRP of $60 for a single roll of 220, or over 27¢ per label. Again, who would pay that? That’s a higher cost per unit than the packaging we put the stickers on! I might pay double the price for genuine labels, but eight times as much? Forget it! We have two interesting Vintage articles this month. Next issue, we’ll be back to the usual Vintage Radio. by Nicholas Vinen Australia's electronics magazine siliconchip.com.au