Silicon ChipThe Fox Report - March 2025 SILICON CHIP
  1. Contents
  2. Publisher's Letter: Microsoft’s constantly moving target
  3. Feature: Net Work by Alan Winstanley
  4. Project: The Pico Gamer by Geoff Graham
  5. Subscriptions
  6. Feature: Audio Out by Jake Rothman
  7. Feature: Precision Electronics, part three by Andrew Levido
  8. Feature: Max’s Cool Beans by Max the Magnificent
  9. Project: Compact Frequency Divider by Nicholas Vinen
  10. Feature: Techno Talk by Max the Magnificent
  11. Feature: Circuit Surgery by Ian Bell
  12. Feature: The Fox Report by Barry Fox
  13. Feature: The History of Electronics, part three by Dr David Maddison
  14. Project: Mains Power-Up Sequencer, part two by John Clarke
  15. Back Issues
  16. Feature: Harold S. Black, Negative Feedback & the Op Amp by Roderick Wall & Nicholas Vinen
  17. PartShop
  18. Market Centre
  19. Advertising Index
  20. Back Issues

This is only a preview of the March 2025 issue of Practical Electronics.

You can view 0 of the 80 pages in the full issue.

Articles in this series:
  • Win a Microchip Explorer 8 Development Kit (April 2024)
  • Net Work (May 2024)
  • Net Work (June 2024)
  • Net Work (July 2024)
  • Net Work (August 2024)
  • Net Work (September 2024)
  • Net Work (October 2024)
  • Net Work (November 2024)
  • Net Work (December 2024)
  • Net Work (January 2025)
  • Net Work (February 2025)
  • Net Work (March 2025)
  • Net Work (April 2025)
Articles in this series:
  • Audio Out (January 2024)
  • Audio Out (February 2024)
  • AUDIO OUT (April 2024)
  • Audio Out (May 2024)
  • Audio Out (June 2024)
  • Audio Out (July 2024)
  • Audio Out (August 2024)
  • Audio Out (September 2024)
  • Audio Out (October 2024)
  • Audio Out (March 2025)
  • Audio Out (April 2025)
  • Audio Out (May 2025)
  • Audio Out (June 2025)
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)
Articles in this series:
  • Max’s Cool Beans (January 2025)
  • Max’s Cool Beans (February 2025)
  • Max’s Cool Beans (March 2025)
  • Max’s Cool Beans (April 2025)
  • Max’s Cool Beans (May 2025)
  • Max’s Cool Beans (June 2025)
Articles in this series:
  • (November 2020)
  • Techno Talk (December 2020)
  • Techno Talk (January 2021)
  • Techno Talk (February 2021)
  • Techno Talk (March 2021)
  • Techno Talk (April 2021)
  • Techno Talk (May 2021)
  • Techno Talk (June 2021)
  • Techno Talk (July 2021)
  • Techno Talk (August 2021)
  • Techno Talk (September 2021)
  • Techno Talk (October 2021)
  • Techno Talk (November 2021)
  • Techno Talk (December 2021)
  • Communing with nature (January 2022)
  • Should we be worried? (February 2022)
  • How resilient is your lifeline? (March 2022)
  • Go eco, get ethical! (April 2022)
  • From nano to bio (May 2022)
  • Positivity follows the gloom (June 2022)
  • Mixed menu (July 2022)
  • Time for a total rethink? (August 2022)
  • What’s in a name? (September 2022)
  • Forget leaves on the line! (October 2022)
  • Giant Boost for Batteries (December 2022)
  • Raudive Voices Revisited (January 2023)
  • A thousand words (February 2023)
  • It’s handover time (March 2023)
  • AI, Robots, Horticulture and Agriculture (April 2023)
  • Prophecy can be perplexing (May 2023)
  • Technology comes in different shapes and sizes (June 2023)
  • AI and robots – what could possibly go wrong? (July 2023)
  • How long until we’re all out of work? (August 2023)
  • We both have truths, are mine the same as yours? (September 2023)
  • Holy Spheres, Batman! (October 2023)
  • Where’s my pneumatic car? (November 2023)
  • Good grief! (December 2023)
  • Cheeky chiplets (January 2024)
  • Cheeky chiplets (February 2024)
  • The Wibbly-Wobbly World of Quantum (March 2024)
  • Techno Talk - Wait! What? Really? (April 2024)
  • Techno Talk - One step closer to a dystopian abyss? (May 2024)
  • Techno Talk - Program that! (June 2024)
  • Techno Talk (July 2024)
  • Techno Talk - That makes so much sense! (August 2024)
  • Techno Talk - I don’t want to be a Norbert... (September 2024)
  • Techno Talk - Sticking the landing (October 2024)
  • Techno Talk (November 2024)
  • Techno Talk (December 2024)
  • Techno Talk (January 2025)
  • Techno Talk (February 2025)
  • Techno Talk (March 2025)
  • Techno Talk (April 2025)
  • Techno Talk (May 2025)
  • Techno Talk (June 2025)
Articles in this series:
  • Circuit Surgery (April 2024)
  • STEWART OF READING (April 2024)
  • Circuit Surgery (May 2024)
  • Circuit Surgery (June 2024)
  • Circuit Surgery (July 2024)
  • Circuit Surgery (August 2024)
  • Circuit Surgery (September 2024)
  • Circuit Surgery (October 2024)
  • Circuit Surgery (November 2024)
  • Circuit Surgery (December 2024)
  • Circuit Surgery (January 2025)
  • Circuit Surgery (February 2025)
  • Circuit Surgery (March 2025)
  • Circuit Surgery (April 2025)
  • Circuit Surgery (May 2025)
  • Circuit Surgery (June 2025)
Articles in this series:
  • The Fox Report (July 2024)
  • The Fox Report (September 2024)
  • The Fox Report (October 2024)
  • The Fox Report (November 2024)
  • The Fox Report (December 2024)
  • The Fox Report (January 2025)
  • The Fox Report (February 2025)
  • The Fox Report (March 2025)
  • The Fox Report (April 2025)
  • The Fox Report (May 2025)
Articles in this series:
  • The History of Electronics, Pt1 (October 2023)
  • The History of Electronics, Pt2 (November 2023)
  • The History of Electronics, Pt3 (December 2023)
  • The History of Electronics, part one (January 2025)
  • The History of Electronics, part two (February 2025)
  • The History of Electronics, part three (March 2025)
  • The History of Electronics, part four (April 2025)
  • The History of Electronics, part five (May 2025)
  • The History of Electronics, part six (June 2025)
Items relevant to "Mains Power-Up Sequencer, part two":
  • Mains Power-Up Sequencer PCB [10108231] (AUD $15.00)
  • Firmware (ASM and HEX) files for the Mains Power-Up Sequencer (Software, Free)
  • Mains Power-Up Sequencer PCB pattern (PDF download) [10108231] (Free)
  • Panel labels and cutting diagrams for the Mains Power-Up Sequencer (Panel Artwork, Free)
Articles in this series:
  • Mains Power-Up Sequencer, Pt1 (February 2024)
  • Mains Power-Up Sequencer, Pt2 (March 2024)
  • New use for Mains Sequencer (July 2024)
  • Mains Power-Up Sequencer, part one (February 2025)
  • Mains Power-Up Sequencer, part two (March 2025)
The Fox Report Barry Fox’s technology column Going to eleven I t has been said many times before but bears saying again. The real cost of buying a new computer is not the cost of the hardware, but the cost in time and money of getting the new system up and running with all the same software and settings as before. Programs/apps will need re-installing, which will often only be possible after new activation keys have been bought. Existing peripherals, like printers and scanners and cameras, may or may not work. All the carefully honed settings will need new tweaking. All in all, it’s a rotten awful, horribly time-consuming and expensive job. This is what makes Microsoft’s policy of ending support for Windows 10 towards the end of 2025 so nasty. Owners of perfectly good systems will be forced to choose between junking them or risking continued use without the security updates which Microsoft churns out monthly. And you can be sure that criminals will very quickly exploit any security loophole that Microsoft leaves unplugged. The real devil is in the minimum specification decreed for Windows 11. Whole rafts of PCs have enough memory to clear the upgrade hurdle of 4GB RAM, and they can also meet the Secure Boot and TPM (Trusted Platform Module) security requirements. What fails them is the CPU/ processor, for which Microsoft has set a much higher bar. One of my PCs, a Lenovo desktop, runs Windows 10 very fast and happy with an Intel i7-6700 <at>3.4GHz. But it flunks the Windows 11 Upgrade test. The Internet is awash with registry hacks that can used to fool a Windows 10 PC into ignoring the CPU block. A line of code is added which tells Windows to “AllowUpgradesWithUnsupportedTPMOrCPU”. Adding this line will be easy for anyone familiar with regedit, the Windows registry editing tool. Just Google that phrase. There are also batch files on free download offer, which do the job without the need to use regedit. But beware trying any of this without first learning how to use a registry editor and making a backup of the existing Registry. For good measure, use the Practical Electronics | March | 2025 standard Windows tool to ‘Create a Restore Point’. Furthermore, before trying any forced upgrade, make a full backup of the entire PC, using either the full disk backup software that comes free with Windows or a proprietary backup program such as Macrium (of which sadly there is no longer a free version on offer from the company). Feeling reasonably confident with regedit and batch files, I added the AllowUpgrades… line to my registry and rebooted to make sure it took effect. But the normal Windows 10-to-11 upgrade procedures were still blocked. Perhaps Microsoft is now doing this intentionally? Their upgrade advice site contains a lot of information on how to buy new equipment. The trade must love all this. Fortunately, I found it was still possible to force the upgrade by downloading a full ISO copy of Windows 11 from Microsoft, then right-click and Open with Windows Explorer to reveal its contents, which includes a setup.exe file. Click to run this .exe file and the PC goes online to check for updates to the file. I still got a warning about “not meeting requirements”, but clicking the option to Accept ignores the warning. “Accepting” triggers more checking of files and the PC hardware. Most importantly, you will see a tick box opportunity to “Keep Personal Files and Apps” instead of starting a clean install, which will delete everything! Take no chances here. Double-check you are being offered the “Keep” option and are taking it. There then follows a long process of more checking, online and locally inside the PC, with disconcertingly lengthy black screens. But, for me at least, it all came right in the end. The PC started again with Windows 10 replaced by Windows 11, and all my old programs, apps, settings and data intact. To my astonishment, everything worked, except for one error message warning that a driver for an online music site (Idagio) I had since forgotten about had been blocked. It is possible that other problems will now emerge, like ‘blue screens of death’ and a refusal to install new updates. So I am keeping my full Windows 10 backup safe in case a delayed action disaster strikes and I have to revert. I am also storing all my new work and data on a separate disk. Only time will tell whether I have successfully side-stepped Microsoft’s grand plan. They seem to want me to junk a tried, tested and nicely tuned hardware and software system and spend heavily on something new that does little more than the same as before. As a footnote, and purely by way of experiment, I also tried forcing a budget, low-power Acer laptop to upgrade from 10 to 11. Surprisingly, the near-toytown device passed all Microsoft’s tests except (unsurprisingly) for the CPU, which is an Intel N3710 that snail-chugs at just 1.6GHz. After the now-standard registry hack, I got the installation process to start by downloading the Windows 11 ISO direct from the Windows 11 Download page onto the laptop, right-clicking to ‘Open With’ Windows Explorer and running setup.exe. The upgrade process began, but it greyed out the vital option to keep all existing apps and data and accused me of “choosing a different language” for the installation than for the laptop settings. I stopped the installation and tried changing the country, language and keyboard – several times in several ways – but the error persisted. Obviously, losing all data, settings and apps defeats pretty much the whole object of forcing the upgrade. Also, the end result would probably have been an unusably slow laptop. So I gave up on trying to force a Windows 11 upgrade. As a further experiment, I then tried to use ChromeOS Flex to turn the Windows 10 laptop into a Chromebook. Downloading ChromeOS was easy but burning it to create the necessary Chrome Recovery USB proved impossible (despite trying several different 8GB and larger USBs). An Internet search revealed that I am not alone in repeatedly failing and there is no simple one stop fix. So maybe I will end up replacing dead Windows with Ubuntu Linux. Or perhaps I will just let Windows win this one and dump it at my local recycling centre – after first removing or smashing the hard drive, of course. Editor’s note: as an alternative to switching to Windows 11, you might want to consider using the 0patch service mentioned in my Editorial this month. It is said to be able to patch Windows 10 computers for serious security vulnerabilities for at least five years after Microsoft stops releasing official patches. PE 51