Silicon ChipNet Work - May 2022 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Subscriptions: PE Subscription
  4. Subscriptions
  5. Back Issues: PICOLOG
  6. Publisher's Letter
  7. Feature: From nano to bio by Mark Nelson
  8. Feature: Net Work by Alan Winstanley
  9. Project: 64-key MIDI Matrix by Tim Blythman
  10. Project: Digital FX Unit by John Clarke
  11. Project: High-current Battery Balancer by Duraid Madina
  12. Feature: KickStart by Mike Tooley
  13. Feature: AUDIO OUT by Jake Rothman
  14. Feature: Max’s Cool Beans by Max the Magnificent
  15. Feature: Wind turbine for your garden by Julian Edgar
  16. Feature: Circuit Surgery by Ian Bell
  17. Feature: Electronic Building Blocks by Julian Edgar
  18. PCB Order Form
  19. Advertising Index

This is only a preview of the May 2022 issue of Practical Electronics.

You can view 0 of the 72 pages in the full issue.

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 Welcome to this month’s Net Work, bringing you a round-up of topical technological issues and trends from the UK and around the world. W ith major spikes in the price of wholesale energy heading our way, British energy consumers are already facing swingeing increases as the six-monthly energy ‘price cap’ is due to rise very shortly. (How the UK price cap review works is explained by Ofgem here: https://tinyurl. com/mry964ah) Analysts have predicted a rise of over 50%, with a further 20% possibly in October. However, with world events unfolding before our very eyes, energy supplies are being upended once again, and the focus on energy diversification will doubtless be accelerated as supplies of gas gradually unravel. The major new Nordstream 2 gas pipeline has been shelved by Germany and, ironically, coal, oil and shale gas are now being actively re-considered to plug the gap and cushion us against any price rises. Liquefied natural gas (LNG), delivered by bulk tanker ships, is another option and even nuclear power stations may be revitalised in Germany. The small modular (nuclear) reactor rollout across eastern Europe, described in earlier columns, seems less certain now, although American SMR maker NuScale recently signed a deal to build one in Poland. In Britain, the shockingly expensive (£11bn) smart meter rollout continues, with consumers being urged to ‘do their bit’ and help ‘modernise’ the gas and electricity networks and also streamline the job of taking meter readings. The latter feature is sold as a benign benefit of smart meters, since they will be able to ‘phone home’ with meter readings every day, or even every 30 minutes, starting in 2025. As I wrote over two years ago, smart meters will ultimately change the way we manage and pay for our power consumption. Eventually, discounts or surcharges will be levied depending on the time of day, weather conditions and most of all, the availability of energy supplies to begin with. It is to be hoped that an increase in wind power (offshore, and now onshore), LNG and maybe utilising more of Britain’s own abandoned resources will help to keep the lights on, if not the central heating. The Giga economy Although every major car manufacturer has committed to building emissions-free EVs, there is still plenty of life left in petrol and diesel cars. Owners of EVs fret about their car’s range and they top up en route at service stations with, say, ‘100 miles worth’ of charge – assuming they can find a compatible charging point that works properly. The high price of EVs and spartan charging network are two major deterrents for car buyers, and that’s before we consider whether power generators or battery producers will even be able to meet spiralling demand. So-called ‘gigafactories’ are springing up that are dedicated to the mass production of batteries and electric vehicles. Tesla’s planned gigafactory near Berlin had been stalled due to environmental hurdles, but is finally heading towards production, a year late. Tesla already has an overseas gigafactory in China. UK battery maker Britishvolt (www.britishvolt.com) has announced a battery gigafactory of its own in Northumberland, north-east England. The site will use plentiful supplies of local renewable energy and has attracted over £1.8bn ($2.3bn) of investment funding. Britishvolt is also partnering with commodity trader Glencore to build a battery recycling facility capable of handling 10 kilotonnes of waste a year. Outline planning permission is also expected for the new ‘West Midlands Gigafactory’, a public-private venture between Coventry City Council and Coventry Airport in the heart of England. They claim the £2.5bn ($3.25bn) investment will be the largest battery gigafactory in the UK, with production expected to start in 2025. The Anglo-Korean ‘next-generation’ battery company Eurocell aims to build its first European-based gigafactory too, turning out ‘production-ready’ batteries in just 12 months from a standing start, far quicker than other gigafactories will be able to, they claim. An initial £600m ($0.78bn) investment is planned over two phases, and the company intends to supply products for European energy storage, automotive, and e-mobility applications. Eurocell is considering sites in the UK, the Netherlands or Spain, dependent on government support offered; Britishvolt has announced a new battery gigafactory in Northumberland, England, at a cost of over £1.8bn of investment funding. 10 Practical Electronics | May | 2022 Rolls-Royce is partnering with Scandinavian regional airline Widerøe and hopes to launch an all-electric commuter plane in 2026. possibly Britain offers the added attraction of operating outside of EU strictures. The new site would reach full production by 2025. More details at: https:// eurocell-emea.com Meanwhile, StoreDot, the Israeli manufacturer exploring XFC (Extreme Fast Charge) batteries mentioned in the March column, has launched its ‘100inX’ road map outlining the likely charge time their batteries hope to achieve to yield a range of 100 miles. StoreDot expect to offer EV batteries with a charge rate of [up to] 100 miles range for five minutes of charge time by 2024, with 100 miles in two minutes as their target in a decade’s time. ‘100in5’ cells are already being evaluated by several EV manufacturers, they tell me. More EV projects that are breaking cover include the all-new Fisker Ocean electric SUV which debuted at Mobile World Congress in Barcelona. The California-based start-up expects to start production by the end of 2022, and they see the European market as critical for its success. Solar cells in the ‘SolarSky’ roof supplement the electric motor and the vehicle will be built using a large amount of recycled material to enhance its ‘green’ credentials. Readers can take an early look at: www.fiskerinc.com In the March column I mentioned that the Japanese consumer giant Sony had surprised the EV sector by revealing a second prototype electric car at this year’s Consumer Electronics Show. Sony’s Vision S-02 EV was presumed to be a pre-production testbed for mobile sensors and electronics, but Sony has now inked a deal with none other than Honda. The aim is to ‘create a new era of mobility and mobility services’, says Honda, with production of their first car expected in 2025. Taking flight Following my item last month on the Autoflight eVTOL ‘Prosperity 1’ all-electric flying taxi, the makers report that the craft has achieved its first ‘transition flight’: shifting from vertical take-off to forward motion and back again. The three-passenger-plus-pilot aircraft has eight vertical props and two horizontal ones, and you can witness the test flight at: https://youtu.be/QPqFCJC7ozs Rolls-Royce hopes to launch an all-electric passenger plane in 2026. Partnering with Widerøe, Scandinavia’s largest regional airline, the all-electric passenger aircraft would be a perfect solution for providing emissions-free commuting between the area’s multitude of regional airports. Back to earth, and the practicalities of charging EVs themselves – the UK’s National Grid reckons that 75% of EV The new Fisker Ocean electric SUV claims to have the longest range in the segment, and production is due to start in late 2022. Practical Electronics | May | 2022 owners who can charge at home, will continue doing so. To give our needy electricity network a boost, one option being considered is to use an electric vehicle’s batteries to sell surplus energy back to the National Grid, paying EV owners for the privilege (domestic solar-panel style). This emerging technology is called Vehicle-to-Grid or V2G. As predicted, Time of Use Tariffs (ToUT) could be introduced to supposedly ‘incentivise’ owners to charge overnight at off-peak times; put another way, owners could face surcharges for using electricity at peak times. An interesting summary of V2G is online at: https://bit.ly/pe-may22-v2g Also waiting in the wings is the idea of using an EV’s battery to top up the homeowner’s own domestic electricity supply. Vehicle-to-Home (V2H) bidirectional chargers are being explored by UK charger manufacturer Indra, which admits that the technology is not yet commercially available. The smart chargers would also receive remote OTA (over the air) updates. First outlined in January’s column, the ZipCharge Go ‘powerbank on wheels’ for EVs is now at an advanced validation prototype and procurement stage, the makers tell me. Some 40% of car-owning households have no designated or off-street parking, ZipCharge says, so the portable electric charger may be one The ZipchargeGo powerbank for EVs is due to launch in 2023 11 A prototype Scania electric truck charging during motorway trials in Germany. A 20km trial is being considered in the UK. (Image: Tom Scott/ Youtube) answer to topping up an EV overnight. The ZipCharge Go contains various anti-theft and security features and is slated to launch early in 2023. It’s starting to become clear how car ownership and travel will take shape in years to come as we gradually move away from petrol and diesel fuels. Owners of electric vehicles in Britain might be able to mitigate some energy price rises by switching to an EV-aware tariff that offers cheaper overnight charging rates (smart domestic electric appliances of the future will do the same, automatically). The Rightcharge charge-point and EV tariff comparison website reckons that savings can be made by EV owners who switch this way. Charlie Cook, founder of the Rightcharge website, said: ‘The cost of standard variable tariffs is about to rocket by 54% from 1 April as Ofgem increases the price cap. By switching from a variable tariff to an EV-friendly tariff, drivers can schedule for overnight charging and reduce their bills by an average of around £300 per year. By doing so they will also be charging on electricity that is roughly 25% cleaner in comparison to electricity consumed during the evening hours.’ More resources for EV users are online at: https://rightcharge.co.uk Big battery Batteries aren’t just for electric vehicles, though: Singapore-based Sembcorp, a sustainable energy solutions provider, recently announced that Europe’s largest battery energy storage system will be built on Teesside in northern England, to help the UK achieve its ‘Net Zero’ target. It will be home to a 360MW Li-Ion battery storage system offering several hours of power, and 12 the near-instantly available power boost will help balance out the National Grid’s supply lines. (See: https:// bit.ly/pe-may22-sem) Nearby, a new 300MW natural gas power plant – the Whitetail Clean Energy site (https:// whitetail.energy/) – could be built by Sembcorp and the zero-emission site will use gas and oxygen, rather than air, for fuel; the turbines would be driven by liquefied carbon dioxide rather than steam. It would capture up to 800,000 tonnes of CO2 a year for storage under the North Sea. Keep on (electric) trucking I mentioned in a previous column that the US truck maker Kenworth recently introduced its first electric lorry. (Ever wondered why European truck cabs are shorter than US or Australian ones? Legal limits on the length of our trucks mean that drivers of European trucks sit ‘above’ the engine rather than behind it.) The move towards electrifying the transport network is not exclusive to cars or vans (or trains, buses or trams) though: several weeks ago I met a representative of a consortium comprising the civil engineers Costain, Siemens, European truck maker Scania, overhead line equipment (OHLE) engineers SPL-Powerlines, technical architects Arup, and Cambridge and Heriot Universities. Therein lies a clue: the group hopes to carry out a UK government feasibility study with the objective of removing diesel freight trucks from our roads by 2040. A stretch of motorway has been pencilled in to hold the UK’s first trial of electric trucks, which if successful would also study freight logistics surrounding one of Britain’s largest ports. Electric trucks are already catching on in Sweden, with Volvo Trucks offering a range of vehicles for urban and local deliveries (see: https://bit.ly/pe-may22vol). The British motorway trials would use 20km of overhead lines to power electric trucks running beneath them. Some proofs of concept trials are already running on a 2km stretch in Sweden (for example, see the report: https://youtu. be/27100u7IcII) as well as in Germany: https://youtu.be/_3P_S7pL7Yg These prototype trucks would draw overhead power and recharge their batteries using pantographs (so-called ‘in-motion charging’), before the vehicle completed the final stretch entirely electrically propelled. There are all sorts of design and economic challenges to overcome, including the fact that motorway bridges will interrupt the catenaries of overhead lines; perhaps cables might go underground in places and trucks will automatically disconnect and reconnect as they pass underneath. It’s not yet clear whether such trucks would be 100% electric or a hybrid diesel/electric. The whole business model has yet to be fleshed out and it will be many years before Britain’s electric truck infrastructure is built, but it’s a sign of things to come. A magnetic attraction One component that everyday life depends on is the humble magnet. They are everywhere, from motors to loudspeakers to transducers, and 4,000 tonnes of permanent magnets from defunct gear are produced every year, says minerals miners Pensana plc. The rare earths market is dominated by China and is critical to the production of permanent magnets, and the company is planning a new $190m facility to produce up to 12,500 tonnes annually of rare earth oxides at Saltend, near Hull in England. By 2025 Saltend is expecting to produce 4,500 tonnes of neodymium and praseodymium (Nd/Pr) annually, or over 5% of the world market and will be one of only three such facilities outside of China. The company already owns a state-of-the-art rare earth mining facility in Angola. It’s no co-incidence that the area on the north bank of the River Humber in eastern England, is also becoming a tariff-free Freeport with factories being established nearby to manufacture wind turbines – each of which is said to contain several tonnes of permanent magnets. The industry supplier Goudsmit has more background at: https://bit. ly/pe-may22-mag The UK Government is also investing in the emerging idea of floating offshore ‘wind ports’ to generate electricity. Some concepts were floated, as it were, by Equinor at: https://bit.ly/pe-may22-osw Practical Electronics | May | 2022 Workshop whoops... My thanks to regular PE reader Glenn Patterson who dropped me a line: ‘I continue to enjoy your monthly column in Practical Electronics and I’ve just read your February 2022 Net Work (also noting that magazine subscription deliveries to here in Australia appear to be back on track!) and I was surprised to read that Ryobi Europe has persisted with Ni-MH battery technology in their 18V power tool range. ‘While I don’t have any Ryobi products, I embraced the Makita 18V Li-ion platform nearly 10 years ago, and have been extremely happy with them – Li-ion being the preferred and more durable battery technology. I also note that Ryobi 18V OnePlus products available from the local Ryobi retail outlet down under (Bunnings here in Australia) is Li-ion based. Again, I look forward to receiving the monthly PE magazine, and the regular columns therein. Cheers, Glenn.’ When writing about Ryobi’s popular 18V OnePlus battery-powered tools, I inadvertently implied that their NiMH batteries were still on the market. I must clarify that Ryobi of course majors entirely on 18V Li-ion batteries and I even found some of them on the 6-port charger above my own workbench! Thank you for pointing that out, Glenn, and for your regular subscription too! Ryobi 18V OnePlus tools are available from the usual sources and their range of accessories (200+) is expanding all the time. Remember that ‘bare tools’ don’t include batteries or chargers, which must be bought separately. Also in February’s column, I described how my perfectly good first-generation Google Home Hub (now called ‘Nest Hub’) smart speaker with LCD screen had suddenly locked up last year for no reason at all. Many disgruntled users were found online, complaining about the same problem. Google has been totally tight-lipped about addressing the issue and no one’s reported a software fix, but fingers point to firmware problems or some bloody-minded changes in Google’s network. Of course, hardware warranties only last typically for one year anyway, and mine was barely two years old before its software was suddenly hobbled. It would appear that unhappy users are expected to toss the things away. The small print on the defunct Home Hub box (found in the attic) states that Google features and functionality are subject to change ‘without notice or obligation’, which presumably includes pulling the plug on the device altogether without warning. Google did not answer requests for an explanation. In comparison, Amazon guarantees their Alexa-powered Echo devices will receive software security updates until at least four years after the devices are last made available for purchase. A clear timetable is published at: https:// amzn.to/3Mu5KyE, which offers users some reassurance about the likely operating lifespan of these smart displays and speakers. Space news Finally, nearly 50 years after the Soviet Soyuz and American Apollo capsules docked in space to symbolise friendship and cooperation (see: https://bit.ly/ pe-may22-apsoy), the space programme has become another tragic casualty of the turmoil in Europe, starting with the UK’s OneWeb LEO satellite project. These use Russian-built Soyuz rockets and the next tranche of 36 OneWeb satellites, due to blast off in early March, was duly grounded when the UK Government refused to meet some demands. OneWeb then cancelled launches from the Baikonur Cosmodrome in Kazakhstan, and SpaceX has reportedly offered to launch them instead. Soyuz launches from French Guiana have also been cancelled by Roscosmos – the site where the 1552 hand-held plastic enclosures James Webb telescope was launched last December using an Ariane rocket (see: https://go.nasa.gov/3MnQqDD) Meantime, Elon Musk’s SpaceX has launched another 47 Starlink satellites into orbit, where about 1,500 or so are said to be in active operation, with hundreds more manoeuvring into position. SpaceX also delivered a lorry full of Starlink terminals to Ukraine to offer satellite-based communications to the war-torn nation. Recent Net Work columns also highlighted Virgin Orbit’s latest successes to launch satellites into space quickly and cheaply using a 747 (see last month), which could form a timely shortcut into space. The UK government is also accelerating its promise to enter the space launch sector: the northern-most island of Unst is home to the new SaxaVord Space Port, where it is planning to offer launch services for Europe starting from 2024. A Memorandum of Understanding was reached with the French small launch rocket developer Venture Orbital Systems (VOS). A new ground station array to support satellite operations is also planned there. You can learn more at: https://saxavord.com I’d like to sign off this month by saying that writing a monthly column that won’t be published for several weeks can present me with a lot of challenges, especially when trying to remain topical and timely. Not wanting to tempt fate, I am presently left wondering what the world will look like when the printed version finally reaches the newsstands. For what little comfort it will offer, I can say that, today, all our thoughts are with those whose lives have been so terribly affected by the appalling war that is engulfing Ukraine. You can find ways to help through UNICEF, the Red Cross and respected others here: https://bit.ly/pe-may22-slaukr The author can be reached at: alan<at>epemag.net ! w ne Learn more: hammfg.com/1552 Contact us to request a free evaluation sample. uksales<at>hammfg.com • 01256 812812 Practical Electronics | May | 2022 13