Silicon ChipNet Work - October 2021 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Subscriptions: PE Subscription
  4. Subscriptions: PicoLog Cloud
  5. Back Issues: PICOLOG
  6. Publisher's Letter
  7. Feature: The Fox Report by Barry Fox
  8. Feature: Techno Talk by Mark Nelson
  9. Feature: Net Work by Alan Winstanley
  10. Project: Mini WiFi LCD BackPack by Tim Blythman
  11. Project: USB Supercodec by Phil Prosser
  12. Project: Ultrasonic High Power Cleaner by John Clarke
  13. Project: Colour Maximite 2 (Generation 2) by Phil Boyce , Geoff Graham and Peter Mather
  14. Feature: AUDIO OUT by Jake Rothman
  15. Feature: Max’s Cool Beans by Max the Magnificent
  16. Feature: Circuit Surgery by Ian Bell
  17. Feature: IoT Cricket by Khairul Alam
  18. Feature: KickStart by Mike Tooley
  19. Advertising Index
  20. PCB Order Form

This is only a preview of the October 2021 issue of Practical Electronics.

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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)
Net Work Alan Winstanley This month, Net Work warns readers to beware of fake, false or misleading CE markings, and looks to the future of metering and power. The genuine CE mark, distinguished by the character spacing and circular font. W hile surfing around a Facebook group dedicated to electrical equipment, I came across an interesting thread discussing ‘CE’ marking on electronic gear and components. What caught my eye was the seemingly serious suggestion that a logo similar to the European ‘CE’ mark was used by some Chinese manufacturers to mean ‘China Export’ rather than Conformité Européenne. This particularly piqued the writer who, half his career ago, was involved with ISO9000 quality management, grappling with countless British Standards, Euronorms (EN regulations) and all manner of quality assurance regulations. The European Union is a ‘single market’, so in the interests of ‘harmonisation,’ EU regulations are supposedly transposed into the member states’ national laws and this includes product testing, safety and labelling. Consumers could therefore be confident that uniform quality standards were consistently adopted across the Union and, regardless of which EU country the item was being marketed, the product would be ‘compliant’ with all prevailing laws. For anyone who’s interested, the official (English) website of the European Union – https:// bit.ly/pe-oct21-eu – highlights the work of its 55 departments: bedtime reading it is not! Here in Europe, everyone is familiar with the authentic CE mark that appears on all manner of goods. It indicates that the product complies with 12 appropriate legislation. Most ordinary consumers view the CE approval mark as a symbol denoting product safety. For instance, a toy that complies with EN71 (the Toy Euronorm) won’t have any sharp edges, finger traps or easily detached small parts, and it will be both non-flammable and non-toxic. Electronic equipment sporting a CE mark will comply with the European Electromagnetic (EMC) Directive, Low Voltage Directive and probably lots more besides, while items of PPE (personal protective equipment, such as facemasks or goggles) will have a CE mark signifying rigorous compliance with some very stringent laws. (For just masks, one can only marvel at 48 pages of EU PPE legislation at: https://tinyurl.com/2pt2trnd). Many EU laws are ‘sold’ in deceptively simple-sounding terms, but the devil is usually buried in the technical detail. The genuine article An eagle-eyed user will soon spot a genuine CE mark: the letters are derived from two sets of intersecting concentric circles, and when viewed on a 20×20 grid the semi-circular symbols are actually 20-units high but 11-units wide (ie, one unit greater than being semi-circular). The strokes are three-units thick. Critical are the separation between the two letters (see https://bit.ly/pe-oct21-euce) and the perfectly circular style of the font. In addition to a product’s CE marking, a ‘technical dossier’ about it will be held by the manufacturer which contains fully documented evidence of product testing and approvals. Local authorities may demand to see it in the future. A so-called ‘EU Declaration of Conformity’ is also signed by the manufacturer as proof of product compliance; they’re a familiar sight, and are often included with the product’s instructions. Unfortunately, worthless variations of the authentic CE mark are sometimes found on a range of disreputable imported goods. The reason is likely to be very simple: the goods are fake, non-compliant and haven’t been tested, A non-compliant CE mark found on a USB charger – compare the character spacing. but given a quick glance a bogus CE logo can pass as the real thing. The CE letters may be bunched up closely together or otherwise misshaped, but they are not the real deal. To put our cards on the table: it’s totally inconceivable that, of all the designs, logos and typefaces that could be used by foreign makers, a supposed ‘China Export’ symbol should be dreamt up that coincides so very closely with the genuine CE mark. As an example, the author snapped a lookalike CE mark on a USB charger: see above and note how the CE letters butt up to each other. Furthermore, many such goods are completely untraceable, with no details of manufacturers provided anywhere: for example, an admittedly decent-quality pair of binoculars recently sourced by the author from Amazon has a meaningless name on the strap and no maker’s details anywhere. Such anonymity makes it impossible to trace non-compliant goods back to their source and only raises suspicions about their quality or warranties. Sayonara to the CE Mark Dodgy goods probably won’t have an EU Certificate of Conformity either (asking for one is likely to be fruitless), Practical Electronics | October | 2021 Above and below, the UKCA (UK Conformity Assessed) mark will apply for new stocks of items placed on the market in Great Britain from 1 January 2022. electrical gadgets, for example. These are often sourced by younger people online who may not realise that they are being duped into buying potentially dangerous goods. Now that the United Kingdom has left the EU, the country is in the midst of introducing its own quality compliance symbol. Readers will gradually start to see the new UKCA (UK Conformity Assessed) mark, for new stocks of items placed on the market in Great Britain from 1 January 2022. In fact, it already appears on a Samsung Pocket SSD purchased by the author recently. Both solid and outline forms of the rather dull (and probably easily copied) logo will be seen. Also, UK Declarations of Conformity will start to appear with new goods in coming years. Due to the Brexit transition rules deal, the CE logo, not the UKCA symbol, still prevails in Northern Ireland for the time being. There is more information on the new UKCA at: https://bit.ly/pe-oct21-ukca Buyer beware? A cynic (or realist – take your pick) might suggest that ‘CE’ actually originates from the first truly pan-European language and should be interpreted as Caveat Emptor – Latin for ‘Let the buyer beware’. (It’s unlikely that a Roman first uttered this snappy phrase a couple of millennia ago, but it certainly has several centuries of use in English Common Law – see: https:// bit.ly/pe-oct21-cvl) Not-so-smart meters A UKCA and genuine CE mark appearing on a Samsung SSD in 2021. and even if there was one, the writer would treat it with some scepticism anyway. It’s not just the CE mark that some producers play fast and loose with, some electrical goods sold in the UK sometimes have familiar but bogus BSI (British Standards Institute) ‘kitemark’ logos too. Yet makers and importers get away with this deception and a myriad of phony products appear online in all the usual places. Having stated there is no such thing as a recognised ‘China Export’ mark, the writer was genuinely shocked to see the idea given credence on some respectable-looking technical web sites. It is a simple rip-off of the genuine CE mark and anything that bears a phony CE mark should be given a wide berth or, at the very least, treated with extreme caution. Look especially closely at cheap imported mains adaptors, power cords and similar Practical Electronics | October | 2021 outlined how British consumers were being pressured into installing smart meters in their homes, meters sometimes being used as bait to attract cheaper tariffs. It’s a perverse distortion to suggest that smart meters are merely benign devices here to help us ‘save money’. As I wrote in December 2020, this decade-old EU energy policy was intended to make the European energy market more resilient, combat climate change and (whisper) establish an ‘internal market’. With all sorts of political problems looming with gas supplies in mainland Europe (including the controversial NORD2 pipeline from Russia to Germany, see Gazprom’s website at: https://bit.ly/pe-oct21-gaz), the future of power transmission has never been less certain and control of much of the European mainland’s gas supplies has been allowed to fall into Russian hands. Smart meters are all about handling ‘Demand Side Response’ (DSR) which means ‘encouraging’ consumers to reduce consumption at times when capacity is limited. This may ultimately involve penalising consumers by charging more when power is consumed during times of low (cheap) supply. For example, when there is little solar or wind power available but the weather is wintry, so nuclear and fossil fuels are used. Or when there’s too much air conditioning operating during summer periods. Coaxing us to use less Near real-time raw data is already captured that could easily show what power is being used, and when, by consumers, thanks to smart meters reporting it over the Smart Meter Wide Area Network (SM WAN) every 30 minutes or so. In the future we can expect to be nagged, either by text message or messages popping up on our ‘In Home Displays’ (IHDs) imploring us to reduce our demand. In the not-so-distant future we can certainly expect to see our behaviour being Britain’s gas and electricity suppliers are still pushing hard to get smart meters installed in our properties, and although the project roll-out seems to have been lost among all the disruption caused by Covid-19, the eye-watering cost of the programme continues to spiral upwards. Furthermore, UK consumers have now been warned of looming price increases from October, just as winter beckons, as utilities compete for supplies of gas and wholesale prices edge upwards. Back in 2019 the Department for Business, Energy and Industrial Strategy reckoned it would be at least another five years before the smart meter programme starts to deliver net cost benefits to consumers, but the programme has slipped behind and has been plagued by problems that ought to have been resolved by now. Back in the December 2019 A SMETS2 domestic gas meter – coming to a house and January 2020 issues I near you... soonish. 13 (Above) Early trials by H21.green are under way to test hydrogen as a source of heating in Spadeadam, Cumbria in the north of England. Note the yellow supply pipe around the test houses. (Below) The houses are built on the appropriately named ‘Hy Street’. Says it all: a British Gas smart meter booking page goes 404. modified as we become conditioned into using less gas and electricity this way, and instead use ‘green alternative solutions’. Some fundamental problems still exist with smart meter technology today, particularly first generation SMETS1 (Smart Metering Equipment Technical Specification) which may ‘go dumb’ or IHDs (In-Home Display) that stop working. Trying to change your supplier – which we are all being actively encouraged to do in order to beat the price rises – can open a whole new can of worms for consumers. If you’re enjoying a lower-priced tariff, when that deal ends customers can expect a startling rise in costs when they face the new market prices. NEW! 5-year collection 2015-2019 All 60 issues from Jan 2015 to Dec 2019 for just £35.95 i files ready or ediate download See page 6 for further details and other great back-issue offers. Purchase and download at: www.electronpublishing.com 14 The British Gas smart meter revolution continues to clunk along mindlessly with sub-par meters and a hopeless online booking service. Our editor was sent an invitation, claiming: ‘We’re installing smart gas meters in your area. Our engineers are upgrading homes near you to the latest version of smart meters – the next generation SMETS2 meters, so you can keep control of your energy. Get in touch to make an appointment today – installation is free. Make sure you don’t miss out. The sooner you get in touch, the quicker we can install your new meters.’ Every link for this truly resistible offer led to a web page that is symptomatic of the state of the industry – as shown above, left. All eyes are looking towards the eventual supply of hydrogen as one of the ultimate clean fuels and it’s possible that domestic gas heating systems could be converted to run on hydrogen instead. But it’s not trivial to change over, as the government has admitted that boilers (furnaces), pipes and smart meters themselves (!) would all need converting due to the chemical and physical differences between methane gas and hydrogen. Trials are underway by the consortium H21.green (https://h21.green) to build a hydrogen gas ‘microgrid,’ including blending hydrogen with natural gas, with a test site in Cumbria having three demonstration houses powered by hydrogen. More details on the YouTube video at: https://youtu.be/GNIGJzbERg4 Somehow, I suspect that although the power-gen industry may promise much, if the smart meter rollout is anything to go by, energy consumers will face a lot of delay and frustration for decades to come. In earlier columns I wrote extensively about the upsurge of electric vehicles, notably made in China. Warnings have already been issued about vulnerabilities in some EV charger systems at home which could be prone to hacking. In Britain, it has been announced that by 2024 a North Lincolnshire motorway could become the first ‘electric road’ to power electric trucks, charging them from overhead cables in a way similar to how trams were powered more than a hundred years ago. What goes round comes round, but will there be enough electricity to meet this spiralling demand? See you next month The author can be reached at: alan<at>epemag.net for more Net Work! Practical Electronics | October | 2021