Silicon ChipNet Work - August 2022 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Subscriptions: PE Subscription
  4. Subscriptions
  5. Publisher's Letter: The power of batteries
  6. Feature: Time for a total rethink? by Mark Nelson
  7. Feature: Net Work by Alan Winstanley
  8. Project: Multi-purpose Battery Manager by Tim Blythman
  9. Project: Simple MIDI Music Keyboard by Tim Blythman
  10. Project: NANO PONG ON YOUR TV by TIM BLYTHMAN
  11. Project: USB Power Delivery Chargers by Jim Rowe
  12. Feature: Make it with Micromite by Phil Boyce
  13. Feature: KickStart by Mike Tooley
  14. Feature: Max’s Cool Beans by Max the Magnifi cent
  15. Feature: Flowcode Graphical Programming by Martin Whitlock
  16. Feature: Circuit Surgery by Ian Bell
  17. PCB Order Form
  18. Advertising Index

This is only a preview of the August 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 This month we look at how technology is appearing in ever more diverse automotive applications, there’s news of updated NFC logos heading our way soon and a brief roundup of EV and space technology news. A classic 1957 British movie Hell Drivers portrayed tipperlorry drivers duelling on the roads and driving long hours at breakneck speed in order to deliver as many loads as possible and earn a bonus for the day. The 1¾-hour black and white film has some rising British stars and interested readers can currently watch it on YouTube at: https://youtu.be/7Qb8K1qClyA About 30 years after Hell Drivers was made, I found myself working for a start-up tech firm that was developing a new electronic in-cab data logger for trucks. This was at a time when HGV (in Britain, ‘heavy goods vehicles’ – ‘semis’ or trucks in the US) travel time was recorded physically on wax paper discs in an analogue tachograph, a ‘big brother’ electromechanical device that many truck drivers initially resented and dubbed ‘the spy in the cab’. Truckers disliked the idea of being watched. Legislation stated that drivers could drive for nine hours before parking up for the night, but they also had to take a break after 4½ hours at the wheel. Once back at the depot, paper discs were checked for legal compliance, a chore that was often sub-contracted out to third parties. Our new in-cab computer promised to eliminate this paper-based technology; it connected to a nondescript port (which we reverse-engineered) on the back of analogue tachographs, and it captured the journey data and wrote it onto our removable memory key. The key would plug into the office PC, where our software instantly analysed it. It was cutting-edge, trend-setting stuff, but sadly it was probably too far ahead of its time. Today, digital and ‘smart’ tachographs are available to monitor journeys, and data is stored both in the unit’s internal memory and also on compulsory driver smart cards. To show what onerous regulations today’s truck drivers have to contend with, these are summarised on the UK Government website (see: https://bit.ly/pe-aug22-tacho). Both analogue (paper disc) and digital systems are covered, and you can also see what traditional paper discs look like. Black box data One forward-looking feature of our 1980s truck computer was the idea of capturing data in case there was an event such as (heaven forfend) a road accident. If sudden deceleration was detected, the last few minutes’ worth of data could be telescoped-out for detailed analysis afterwards. This principle is used today in certain dashcams, where G-force sensors cause data to be written to a read-only folder in memory, ready for later examination. A modern digital tachograph with smartphone management (Courtesy Continental AG). 10 The same kind of technology also benefits today’s younger motorists, or those with poor driving records. Telematics (‘black box’) units fitted inside cars, or smartphone apps, monitor the driver’s general style and habits, and coupled with GPS location tracking, they are designed to encourage safe and steady driving and keep insurance costs down. Telematics data is fed back to motorists regularly: too much heavy-footedness or speeding can see premiums rise or insurance policies being withdrawn altogether. This way, drivers become conditioned into bettering their road skills. Some telematics policies impose a curfew that prohibits night-time driving, when accidents are more likely to occur. Younger drivers may even be forced to share data with their parents! Many car insurers offer telematics policies and there is plenty of material on YouTube explaining how they work and what it’s like to live with one. They may also assist older, steadier drivers to cut their insurance premiums. Safety drive Many modern cars are peppered with electronic driving aids that at one time would have appeared only on expensive, high-spec vehicles. Drivers today can enjoy rain-sensing windscreen wipers that operate when an infrared A telematics device fitted to a car windscreen (Image: Adrian Flux Insurance / YouTube). Practical Electronics | August | 2022 A swarm of Sky Magic drones being prepared for take-off. light path is disrupted by rain or snow; headlight main beams that dip before a driver can react; warnings of vehicles entering the driver’s blind spot; ‘cross traffic alerts’– great when reversing out of car park spaces and a huge van has blocked the driver’s view. Then there’s traffic sign recognition, which the author is finding increasingly useful in today’s busy roads, and ‘Lane Keep Assist’ which detects when lane markings are crossed (a nuisance that I soon switched off). It all points to increasingly sophisticated sensors and AI, ‘reading’ the road ahead. Some aids are being adopted by law in Europe, starting with Intelligent Speed Assist (ISA), the traffic sign and/or GPS speed limiter that I’ve mentioned in earlier columns. Advanced Emergency Braking (AEB) will both sense the proximity of traffic ahead and brake the car automatically. Being launched onto an unsuspecting public is the controversial rule that new cars (2022 on) must also be ‘compatible’ to allow a breathalyser to be fitted. I suspect that new cars will just carry some extra wiring, rather than being fitted with the breathalyser itself. The journal Euro Weekly News points out another safety aid aimed at new European cars this year: the ‘fatigue and sleep detection assistant’ which gauges the driver’s steering movements, looking for constant or erratic corrections while measuring the length of time the engine’s been running. It’s speculated that sensors could even test the pressure drivers exert on the steering wheel; indeed, trials involving electrocardiograms embedded in steering wheels were held nearly a decade ago (see: https://bit.ly/pe-sug22-ecd). The purpose of this elaborate technology is Practical Electronics | August | 2022 Sky Magic drones created an image of a corgi dog – the Queen’s favourite pet (BBC TV). merely to light up a dashboard ‘coffee cup’ signal reminding weary drivers to take a break. I promise I am not making this up – how VW sees the Driver Alert System working is shown in a YouTube video at: https://youtu.be/WqR3YbjxyS0 Magic in the Sky Our overseas readers will hopefully forgive us if, as a British magazine, we take time out to celebrate the marvellous once-in-a-lifetime spectacle that was the Queen’s 70th Platinum Jubilee held in London a few weeks ago. It brought out the best of British pomp, ceremony and humour, and the various processions were organised with astonishing efficiency as everyone joined together to celebrate 70 years of Queen Elizabeth II’s rule. Apart from the carnival’s float parades, another marvellous feature was the night-time light show depicting various images in coloured lights, carefully co-ordinated in the skies over London. We were treated to images of the Queen’s favourite corgi dog, prancing horses, a pot of tea being poured, a graceful swan and of course the Queen’s handbag, all skilfully choreographed in a faultless display over Buckingham Palace. The creative genius behind the light show is London and Singapore-based Sky Magic, which specialises in creating drone displays for indoor and outdoor events. Their work has appeared in Sydney, Dubai, Venice and many more locations besides. Sky Magic’s custom drones incorporate nine super-bright LEDs producing a total of 900 Lumens that are visible from 2km away. They’re optimised to reduce power consumption and maximise flight duration in displays that span some 300m in width. A swarm of 400 computer-controlled light-emitting drones was marshalled for the Jubilee display. A strong emphasis is placed on flight safety/security, they say, and their control software generates smooth collision-free trajectories for each drone. The aerial festival was an enthralling experience, and interested readers can see more about the technology at: https://skymagic.show The Party at the Palace TV programme is available on BBC iPlayer for UK-based, or (overseas) VPN users accessing a UK-based server, at: https:// bbc.in/3n1l3D9 Whose IDea is this Last month’s Net Work included an item on NFC (Near-Field Communication), the contactless ‘tap’ technology found in smartphones that is used for cashless payments and a whole lot more. NFC radio tags are more convenient to use than a QR code, as they don’t need an app or camera to scan an image, but sometimes problems arise if NFC users aren’t sure where to tap their phone. To overcome this, a new set of symbols will gradually appear on NFC-enabled equipment. Industry is being encouraged to select the most appropriate NFC ‘Wayfinding’ symbol, depending on a user’s New NFC symbols show users where and how to tap their NFC-enabled device (NFC Forum). 11 A Hyperloop ‘capsule’ under development in Toulouse, France. likely familiarity and experience of the equipment and how often a tag would ever be tapped (once or twice in a lifetime? All the time?). There’s more at: https://youtu.be/QZEftIt2fbE One buzzword bandied around in commerce is ‘KYC’ or Know Your Customer. How do online traders or other bodies know it’s really you tapping away on the keyboard? How do they guard against, say, money laundering or online fraud? Recently, I was asked to verify my own ID by an online merchant using the Veriff ID checking service. A web page QR code displayed a URL to open with my smartphone, after which the Veriff applet popped up. I had to scan both sides of my UK driving licence before submitting a selfie. (A passport with built-in NFC chip could also be used: the smartphone will scan the NFC chip directly.) My details were uploaded to a cloud somewhere, and a minute later I was duly ‘verified’. To be fair, it couldn’t be easier, and the system worked flawlessly, but the process highlighted how our personal data gets bandied around, and one might wonder what happens to the flow of our private data behind the scenes or where it ends up. There’s no suggestion that it’s insecure, but from the citizen’s perspective, I found the process was anything but transparent. I also wrote last month about the pitfalls of society sleepwalking into becoming a cashless culture, one that is beyond the reach of those who don’t have, or can’t use, a smartphone or a multitude of apps. Someone who is infirm, elderly or doesn’t own a smartphone will struggle to access online services in the first place, but as Baroness Altmann wrote recently in the Daily Mail, ‘From car parking to banking and GP visits, we must stop punishing the elderly for the crime of not being able to work an app.’ She added that ‘three million people in Britain did not access the internet — more than two million of them aged 70-plus. Even ten percent of mobile phone users don’t own a smartphone, denying them the capacity to download the ‘apps’ with which so many companies seem to be entirely obsessed and increasingly foist on their customers, in an effort to cut costs and increase their profits. ... As a result, a large section of society is left feeling at best marginalised, at worst completely forgotten.’ Quite right. Even those who can use smartphones and apps today will eventually find themselves neither interested enough nor able to do so, but the slow drift towards relying on mobile apps and tiny touchscreens to conduct everyday business seems to continue unabated. Prepare for take-off Verifying one’s ID using the Veriff system requires a scan of photo ID and a selfie. 12 Decades ago, old retail stores and offices used pneumatic tubes carrying little capsules to shift cash or paperwork rapidly and securely between locations. ‘Money air tube systems’ are still produced by Aerocom, for example (www.aerocom.co.uk), evidence that we haven’t quite gone cashless yet! Fast forward to today, and research and feasibility studies continue on a proposed ‘hyperloop’ transport system, which aims to move passengers and freight safely over ground in capsules travelling at up to 750mph – faster than a Boeing 777. No pneumatics here – linear motors will drive the pressurised carriages on a magnetic cushion, contained within low-pressure tubes. Hyperloop Transportation Technologies (HyperloopTT, see: www. hyperlooptt.com) is headquartered in the US and Toulouse, France and has now received investment from the scientific and engineering consultancy Thornton Tomasetti to take the project forward. While Britain stumbles to ever complete its HS2 high-speed rail line of just a few hundred miles (see: www.hs2. org.uk), a hyperloop overground pipeline-based transport network could see futuristic seaport and ‘hyperport’ terminals being built in the US or across Europe. I’ll track the progress of Hyperloop, and an interesting insight is at: https://youtu.be/uwm3qvFWVRU AutoFlight’s electric vertical take-off / landing (eVTOL) Prosperity air taxi featured earlier in Net Work columns successfully completed its second proof-of-concept test in June. A fullsize prototype with revised propeller configuration has made 30 flights, transitioning from vertical lift to forward cruising and back home again. The air taxi will carry three passengers plus a pilot, and a production-ready version of the air taxi is expected later this year. Drone enthusiasts will be interested in a full-test-flight video at: https://youtu.be/o3t40KcnMBo According to their latest Mobility Consumer Index, 52% of motorists planning to buy a car will now choose an EV, said analysts Ernst & Young in a March 2022 survey, in what was described as the ‘tipping point’ for the ‘electric vehicle’ market. The internal combustion engine is not dead and buried yet, though; digging down, I found that ‘electric vehicles’ included hybrid (HEV) and plug-in hybrid (PHEV) cars which of course contain petrol or diesel engines too. Buyers cited ‘environmental reasons’ as the main factor when choosing an EV, the survey said, yet only 20% of them would choose a battery electric vehicle (BEV); the rest are happy with hybrid fossil-fuelled cars. Latest figures from the UK’s Society of Motor Manufacturers and Traders Practical Electronics | August | 2022 AutoFlight’s Prosperity eVTOL air passenger taxi completed a second round of trials in Germany in June. (SMMT) show electric vehicle sales rising, with 20% of new registrations being EVs. This still represents just 2% of all vehicles on British roads. At a time when petrol (gasoline) and diesel fuel costs are at an all-time high, 20.5 million petrol cars and 13 million diesels make up 95% of Britain’s car ownership, says the SMMT, admitting there is ‘significant ground to cover if we are to fully decarbonise road transport “at pace”. This is coupled with the first consecutive annual fall in vehicle numbers in more than a century... leading Britons to hold onto their cars for longer’. Yet our TV screens are stuffed full of adverts for space-age electric cars at prices that are out of this world. Previously mentioned in Net Work (May 2022) the start-up EV maker Fisker tells me it now has 50,000 reservations for its Fisker Ocean SUV. The company has released details of its second model, the Fisker PEAR, described as an ‘agile urban EV’. The new Fisker PEAR has over 3,200 pre-orders, with production expected to begin in 2024. More details at fiskerinc.com Meantime, high-end EV brand Polestar has partnered with StoreDot, mentioned in earlier columns, with an investment aimed at exploring StoreDot’s extreme fast charging (EFC) battery technology for use in future models. Other news Windows PC users are warned of a surge in deadly ransomware attacks that exploit a Zero-day security hole – the so-called ‘Follina’ vulnerability – in Microsoft’s operating system. This latest wave of malware can wreck networks, so users should be extra-vigilant and watch out for dodgy-looking MS Office or rich text files, .zip files arriving by email or .html links (eg in forums) that may download malware onto your system. Particularly worrying is that simply ‘Previewing’ infected files in File Explorer’s Preview pane can trigger the attack, even without opening the file, so Preview should be disabled, at least until the flaw is patched in a Windows update. How ransomware gangs are clubbing together to attack networks is published on The Register IT website at https://bit. 1551W IP68 miniature enclosures ly/pe-aug22-zero which also explains how machines can be infected by the Follina exploit in the first place. A detailed analysis has been published by Sophos at: https://bit.ly/pe-aug22-ms In June, Blue Origin, the sub-orbital space rocket firm owned by Amazon’s Jeff Bezos, completed its fifth human spaceflight and the 21st flight for the New Shepard program (see Net Work, March 2020.) Blue Origin’s New Shepard booster rocket lands vertically, leaving the crew capsule to parachute down to Earth separately. More at: www.blueorigin.com/new-shepard/fly/ Instrumentation on NASA’s James Webb space telescope continues to be commissioned ready to commence operation. One of the observatory’s mirrors was recently struck by a widely reported, but tiny micrometeoroid which has not affected the telescope’s operation. Its first full-colour images are due in mid-July and the web page https://go.nasa.gov/39CT6Pd shows the current progress, along with the instrument’s operating temperatures – it’s rather chilly at –241°C. Sony has established a new division called Sony Space Communications Corporation to develop high-speed laser beam communications devices for microsatellites flying in low-earth orbit. The miniaturised technology is aimed at microsatellites where space is at a premium (no pun intended), and will enable real-time communications from anywhere on the ground up to any satellite in space, as well as between satellites themselves. The use of optical techniques also avoids the complexities of radio frequency licensing, Sony adds. That’s all from Net Work this time, see you next month! The author can be reached at: alan<at>epemag.net ! w ne Learn more: hammfg.com/1551w Contact us to request a free evaluation sample. uksales<at>hammfg.com 01256 812812 Practical Electronics | August | 2022 13