Silicon ChipNet Work - March 2022 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: How resilient is your lifeline? by Mark Nelson
  8. Feature: Net Work by Alan Winstanley
  9. Project: Mini Isolated Serial Link by Tim Blythman
  10. Feature: I’m busy. Go away! by John Chappell
  11. Project: Battery Monitor Logger by TIM BLYTHMAN
  12. Project: ELECTRONIC Wind Chimes by John Clarke
  13. Project: Geekcreit LCR-T4 Mini Digital Multi-Tester by Jim Rowe
  14. Feature: Max’s Cool Beans by Max the Magnificent
  15. Feature: AUDIO OUT by Jake Rothman
  16. Feature: Circuit Surgery by Ian Bell
  17. Feature: Make it with Micromite by Phil Boyce
  18. Feature: Electronic Building Blocks
  19. PCB Order Form
  20. Advertising Index

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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’s Net Work brings readers a round-up of trends emerging in the Internet and further afield in the fast-changing world of technology.. W ay back in Net Work October 2018, I described how in 2004 a CNBC news anchor interviewed an earnest young fellow called Mark Zuckerberg. He’d started a small social media site for US universities called ‘The Facebook,’ which he thought might attract a few hundred users but, by then, the head count had jumped to 100,000. The site was originally dedicated to students eager to share their profiles and contact details, which allowed visitors to find ‘interesting information about people,’ as he put it. The cringe-inducing CNBC interview is still online at: https://youtu.be/cUNX3azkZyk One in three Facebook now has some 2.6bn users around the world, according to Statista. It’s most popular in India (349m) followed by the US (194m) – as of the start of 2021. Viet Nam has nearly twice as many users (74m) as the UK. While Facebook has plenty of detractors, often centred on matters of privacy or monetisation, there is no doubt that the social media giant has become an integral part of many an Internet user’s online experience. Facebook is here to stay, and provided you tread carefully, it’s not all bad: there are plenty of topical Facebook groups covering, say, fascinating local history and countless hobbies or specialties such as restoring vintage radios, collecting old bottles or seashells (or even old mains plugs!), or making contact with long-lost friends or colleagues through A young Mark Zuckerberg explains the idea behind his new media site, ‘The Facebook’ (Image: YouTube / CNBC 2004) 10 arcane groups like the (chosen at random) RHP Bearings (Ferrybridge) Appreciation Society. As the new year gets under way and some of us reflect on years gone by, searching for old mates or workplaces on Facebook can become an immersive and evocative experience, often turning up photographs of old acquaintances, offices, factories, old company trucks, military aircraft, commercial vehicles or It’s worth running a ‘privacy check-up’ in Facebook to confirm your preferences. Access it via your account. pictures of distant locations. Suddenly, a Facebook feed comes goods, furniture and so on too, noting alive with group members reminiscing some groups are ‘public’ rather than about friendships or swapping photos, being for members only. These groups scanned from decades-old collections often avoid the drudgery of selling on of slides and prints stored in old bis- eBay, and are arguably a safer bet than buying or selling more widely on the cuit tins for moments like now. Much has been written about the pros dedicated Facebook Marketplace. (One and cons of Facebook and there are in six Brits surveyed by ThinkMoney had been scammed in Facebook Marplenty more resources online – when there’s a problem it’s often quickest to ketplace, says ThinkMoney at: https:// Google for the answer. There will un- bit.ly/pe-mar22-tm) As regular users know, Facebook uses doubtedly be a community Facebook an awful lot of powerful analytics and group covering your locality or interests – simply search for some keywords or artificial intelligence when displaying names on the Facebook homepage. In contents or showering us with adverts. fact, thanks to the use of geoIP, which It’s also a bit clever at suggesting other tries to triangulate your physical location groups that might be of interest: the (give or take a little), soon advertise- creepy feeling of being ‘monitored’ ments and news from local media or this way doesn’t seem to bother regsuppliers will pop up in your Facebook ular users though. Facebook says it feed. Many small businesses don’t even employs both AI and human moderahave a website and rely on having a tors to screen out nefarious material as best it can – let’s not get into politics or Facebook presence instead. elections – but it pays to be discerning Facing up to Facebook and vigilant. (Always ask yourself if Facebook has tried to make it easier for suggestions are really in your interest, users to understand all the privacy impli- or just to promote the sender.) It’s also cations. Before joining a Facebook group, worth checking your privacy settings; determine whether it’s a public or a pri- in your Profile, click the down-arrow vate one and whether it’s hidden from ‘Account’ button (menu ribbon, top public view – look at the group’s ‘About’ right) to access them, and run a ‘Privasummary. In public groups it may pay to cy check-up’ to confirm your current be more measured with one’s postings, status. A useful ‘View As’ button lets especially if they risk coming back to you see your own Profile as the rest of haunt you years later. There are often the world (ie, those who are not your some local ‘selling groups’ for trading ‘Friends’) would see it. Practical Electronics | March | 2022 All of this takes enormous networking and data processing power, and for any readers who might be interested, I wrote about the construction of Facebook’s first European data centre in Luleå, Sweden in Net Work, May 2016. It explained how an ‘ideal’ data centre would have an effective ‘Power Usage Effectiveness’ (PUE) of 1.0 (see: https://bit.ly/pe-mar22-pue). Facebook has 3.4 million square metres of data centres around the world and is very proud of their ‘green’ credentials. A third data centre was due to come online in Sweden during 2021, and Facebook states that its global operations have now achieved ‘net zero’ using 100% renewable power, which is no mean feat. You can read more about Facebook’s data centres at: https://datacenters.fb.com Living in the metavirtual world As many readers will know, Facebook underwent a major change of identity during the latter part of 2021 when it rebranded itself as ‘Meta’. Facebook is now a ‘Meta company’, Facebook’s Portal LCD screens are now co-branded as ‘Meta’s Portal family’, Meta built its first European data centre in Luleå, and so on. The group has been busily erasing its old name from swathes of its websites and swapping out logos. In his video keynotes published late last year, Mark Zuckerberg, now 37, has some clear visions of where he thinks the connected world is heading next. He expects we will be hanging out in a virtual space dubbed the ‘embodied Internet’. We’re told that ‘Meta’s focus will be to bring the ‘metaverse’ to life and help people connect, find communities and grow businesses.’ It seems we’re nearly done with communicating using tiny screens on mobiles or staring at little faces on flat-panel Zoom or Team meetings all day long. He foresees the ‘metaverse’ as a virtual 3D world, one where its participants will live out new experiences in a virtually created space. The future ‘metaverse’ will embrace VR to connect everyone together. There is even the suggestion that users will be able to ‘teleport as holograms’. Images of Cortana, the holographic character in the XBox Halo video games, spring to mind (https://bit.ly/pe-mar22-halo). Microsoft adopted Cortana’s name for its own virtual helper, to rival Google Assistant and Apple’s Siri. The ‘metaverse’ will also appeal to educationalists, social networkers, gamers or families chatting via video feeds, and no doubt some sectors of Mark Zuckerberg – actually, his avatar – meets and greets business and commerce others in a metaverse get-together. will embrace the metaverse Sony’s mobility aid concept wholeheartedly in years to come. There are even trends emerging The move towards adopting electric veof ‘buying virtual space’ in a metaverse: hicles grinds on, as does the rumour mill: for example, the website https://decen- the industry’s worst-kept secret is that traland.org is a virtual world owned by Apple, the world’s first $3tn company, its users, where you can buy and sell is working towards building its first EV pretty much any virtual property includ- (‘Project Titan’), but nowhere will any ing ‘land’. It’s predicted that business official confirmation be found. That is and commerce will be queuing up to sometimes a sign that Apple is indeed set up shop in these virtual worlds. As up to something and intends to surprise a sign of where things are heading, take us all. Trials and test reports of self-driva look and have fun building your own ing cars, based on a Lexus SUV, have been attributed to Apple in recent years. guest avatar at Decentraland. Will the EV bubble ever burst? WorldMeta is investing billions of dollars creating a metaverse and of course it wide, electric car and truck projects are already has history in the form of the now too numerous to mention, although Oculus virtual visor, marketed by Meta in January 2022’s Consumer Electronics Quest (www.oculus.com). The Oculus Show (CES) in Las Vegas, one consumer Research labs explore VR, AR and AI, ‘gadget’ on show was an electric vehicle and are tasked with looking ahead five prototype from none other than Sony. to ten years. Both Sony and Apple are The Vision S-02 concept car is Sony’s developing latest-generation VR head- second iteration of an electric vehicle, sets too. Some of the ideas are plainly this time having an SUV form factor. fanciful at this stage, and although some Sony’s first car, the Vision S-01 saloon of the basic technologies already exist, revealed in 2020 is undergoing tests in the metaverse itself is still some way off, Europe; car enthusiasts see this as a preZuckerberg admits. As if Covid lock- cursor to production, but the car appears downs, working from home and webcam to be Sony’s testbed for utilising mobile exchanges aren’t enough, the metaverse 5G to upload vehicle telemetry to the will leave us with even fewer reasons cloud. Since April last year, Sony has to interact physically with one other, go been working with Vodafone Germany to school or college or even turn up for to test 5G communications with their work at the office. You can learn more car, and Sony’s EV reportedly managed about Meta’s visions, if you can spare to drive by itself, switching seamlessly an hour, by watching the Welcome PR between 5G antennae. Using its smartphone experience, Sony also aims to video at: https://bit.ly/pe-mar22-fb Microsoft is also entering the metaverse use 5G to update the car’s software and fray. The purveyor of Windows, Teams interact with other 5G services. Sony is, however, establishing a new and Office software is bringing holograms to Teams virtual conferencing, division – Sony Mobility – to explore the where users can express themselves by viability of small-scale EV production, building their own avatar. Watch out this perhaps with Tesla’s market in mind, year for Microsoft Mesh, which utilises and a YouTube video showcases the first Hololens VR headsets to enable users Sony car at: https://youtu.be/P0cQQvvM5Qk. Meantime, the company says anywhere in the world to collaborate. (Left) Sony’s Vision S-02 concept EV (left) is a testbed for sensors, 5G and telemetry; it may see limited production in the future. Pictured with the earlier S-01 saloon. (Right) Sony has been testing 5G mobile systems with Vodafone in Germany since last year. Practical Electronics | March | 2022 11 Russia’s 21,000 tonne Akademik Lomonosov is a floating nuclear power plant supplying electricity to the Arctic city of Pevek. (Image: Rosatom) it is ‘currently conducting functional verification tests in Europe toward the release of Level 2+ advanced driver assistance systems (ADAS) on public roads.’ Modern cars, whether electric or fossil-fuelled, increasingly have driver aids such as GPS, road sign recognition, collision avoidance or radar blind spot assistance, so maybe the next generation of aids is waiting in the wings. In Europe (and likely heading our way), new cars are mandated from mid-2022 to be fitted with Intelligent Speed Assistance (ISA), a GPS and traffic-sign speed limiting feature intended to force cars to slow down, as discussed in previous Net Work columns. Next, electric trucks There is of course relentless pressure on battery design and production as the car and truck market gradually migrates from petrol and diesel in the coming decades. Electric semi-articulated lorries (or ‘semis’ in the US) are in the pipeline, although Tesla has postponed its plans for a semi until sometime later this year, citing battery and component shortages. At CES 2022, American truck maker Kenworth exhibited their new electric semi (see: https://bit.ly/ pe-mar22-ken) which has an estimated range of [up to] 150 miles: a diesel lorry fitted with dual tanks can have a range of easily ten times that figure. Another design problem the freight industry faces is the need to lug a constant dead weight of rechargeable batteries around, which could make a lorry’s operating costs unviable. Although planes and (petrol/diesel) road vehicles gradually get lighter as they consume fuel, electric vehicles carry the same dead weight all the time. (Incidentally, similar trade-offs affect our electricity supply lines: it’s cheaper to string catenaries 12 of air-cooled aluminium wires between pylons, but sometimes there’s no choice but to bury thick cables underground, which is costlier. Utility companies try to optimise the mix to minimise costs, but recent power outages due to bad weather are likely to see costly cables buried underground anyway.) The search continues to raise rechargeable battery density and reduce the weight and volume, as well as eliminating the end-user’s real worries (‘anxiety’) about range and charger availability. Another factor is the time needed for recharging an EV. Israeli manufacturer StoreDot claims to have achieved a major milestone of producing silicon-dominant Extreme Fast Charge (XFC) battery cells that charge in ten minutes and maintain at least 80% of energy storage capacity after 850 consecutive cycles. The firm aims in early 2022 to accomplish 1,000 consecutive XFC cycles, StoreDot says, and their new chemistry has produced a Li-ion battery that can be fully charged in just five minutes. More details are at: www.store-dot.com Is there enough capacity? The problem of generating enough electricity to power a new breed of electric vehicles, when there is barely enough capacity in the network or a sufficient number of EV charging points, has been well aired in Net Work and in the short-to-medium term these problems show no sign of abating. The issues affecting Russian gas supplies in an increasingly volatile Eastern Europe have yet to be played out, and it seems certain that small modular (nuclear) reactors (SMRs) will play a key role in providing electricity in the future. The jury is out, in mainland Europe anyway, as to whether SMRs can rightly be classed as ‘green’ energy. NuScale sets its sights on Europe Last month, I mentioned that the US multinational NuScale had ambitions to deliver its own ‘VOYGR’ scalable 77MW SMRs into Eastern Europe. In Ukraine last September, the US Trade and Development Agency deftly granted funds to Ukraine’s Science and Technology Centre to see whether NuScale’s SMRs would be a good ‘fit’ in that country, and if regulations got in the way, how they could be ‘changed’, says NuScale. Last December, NuScale signed another Memorandum of Understanding with Kazakhstan Nuclear Power Plants in central Asia to adopt VOYGR reactors. NuScale has been buoyed by the early interest and is planning to go public and form NuScale Power Corporation, with 60% of operations still controlled by the engineers and project managers of the Fluor construction company. Although NuScale’s design received approval in the US last July, its aim to deliver its first working SMR is at least half a decade away, in 2027. The UK’s Rolls-Royce SMR is not far behind the curve, with plans for its own SMR having been submitted for approval to the regulatory authorities. China also has great ambitions to dominate the global SMR market in years to come, and a fully operational SMR recently went on stream in China and is said to be generating electricity into the locality. According to the IAEA website, the Shidao Bay-1 200MW reactor has been ten years in the making and made its first grid connection on 20 December – more details at: https://bit.ly/pe-mar22-shi China, along with other countries, is also exploring the viability of nuclear reactors that use thorium (instead of uranium) dissolved in liquid fluoride Practical Electronics | March | 2022 salts which can also act as a coolant, instead of using water. The idea originated in the US in the 1940s, but American trials in the 1960s revealed potential problems with corrosion and poor efficiency, according to Live Science. China’s water-free, molten-salt reactor would be a world first in a country where supplies of thorium are plentiful, and the fact that no cooling water is needed would make the plant ideal for siting in the Gobi Desert, for example. It is understood that China completed a small 2MW pilot project last year, but it will be another eight years or so before a commercial version is ready: China then expects to export the reactor globally. Floating power plant I sometimes wonder why, following a natural disaster such as a hurricane or tsunami, a nuclear-powered ship or submarine couldn’t simply rock up offshore and supply its own power to the stricken shoreline. No doubt there’s more to it than hooking up the vessel’s batteries using some hefty jump leads, though... In 2019, Russia launched the world’s first purpose-built floating nuclear power plant (FNPP). The 21,000-tonne vessel Akademik Lomonosov uses two 35MW reactors and is the first in an expected series of low-power transportable power plants. Russia has applied its experience of building nuclear-powered icebreakers to produce a floating power station that can power remote regions, places where the overland delivery of electricity or the use of renewable energy (wind, solar) would be impossible. After setting sail from Murmansk, the Akademik Lomonosov is now serving Pevek, Russia’s northernmost city where it is permanently moored to a dedicated pier after replacing an old coal-fired power station. The vessel’s nuclear power plant has a lifespan of about 40 years, and special dams were built to safeguard against icebergs or collisions with the shoreline. Russia’s Rosatom agency adds that the ruggedised vessel operates in inherently safer maritime conditions than any nuclear-powered icebreaker would. The fascinating story of the Akademik Lomonosov can be found online at: www.fnpp.info A hybrid tools heads-up Last month, I showcased one or two tools from the Ryobi 18V OnePlus range of tools, including a soldering iron, that share a common 18V Ni-MH battery. The American market is much larger than the European one for Ryobi and an interested user mentioned Ryobi’s ‘hybrid’ soldering station, the Ryobi P3100 that appears on some websites. Then one or two other ‘hybrid’ tools came to light, including a work light and a portable fan. The idea is that these hybrid tools work on either 18V batteries or the mains, which would be an ideal solution for, say, a multi-purpose soldering station that could be used on the bench or in the field. But before you take the plunge, readers, beware: these tools are for 110V mains only and even though they appear on European and UK websites (including Amazon UK) at silly prices, there is no sign of any 230V version. In fact, the mains voltage rating isn’t mentioned anywhere, not even on any product web page. Whether Ryobi would introduce a 230V hybrid for Europe is therefore doubtful, as they seem to take it for granted that customers use the 110V mains. I noticed another twist on the Ryobi OnePlus range, namely using an 18V battery to charge a smaller ‘slave’ power tool. The Ryobi Mini hot melt glue gun RGLM18-0 (or P306) has a base station that cradles on an 18V battery and takes Ryobi’s ‘hybrid’ 18V OnePlus tools such as this P3100 soldering station can also run from the mains. Beware, though, they are 110V AC only. about four minutes to heat up, making it quite slow to get going. The glue gun uses 7mm hot-melt sticks and its compact design is intended for hobbyists and crafters. Only by searching YouTube did I find how it really works – the tool has no battery but builds up sufficient heat to melt a whole glue stick (see: https://youtu.be/X0Nd-va_lwg) in between charging. Meanwhile Dremel, the hobby power tool company owned by Bosch, recently introduced what it says is the world’s first ‘smart’ brushless rotary tool, the model 8260. It has a 12V Li-ion battery and Dremel claims a 20% power improvement over its most powerful mains-corded tool (the 4300). It can connect by Bluetooth to the Dremel app to easily control, monitor and manage the rotary tool, receiving ‘tool management and performance alerts’ on a smartphone or tablet along with accessory and material guidance, which anyone who has grappled with Dremel’s accessory codes might appreciate. A YouTube promo video at: https://youtu.be/HbO-nVvvYeA drove me to distraction, unfortunately. It lists at US$169.99 but has yet to arrive in the UK or EU. The author can be reached at: alan<at>epemag.net ! w e Learn more: hammfg.com/1557 n 1557 IP68 sealed enclosures Contact us to request a free evaluation sample. uksales<at>hammfg.com • 01256 812812 Practical Electronics | March | 2022 13