Silicon ChipNet Work - April 2022 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Subscriptions: PE Subscription
  4. Subscriptions: PICOLOG
  5. Publisher's Letter
  6. Feature: Go eco, get ethical! by Mark Nelson
  7. Feature: The Fox Report by Barry Fox
  8. Feature: Net Work by Alan Winstanley
  9. Back Issues: Digital FX Unit by John Clarke
  10. Project: 64-KEY MIDI MATRIX by Tim Blythman
  11. Project: Digital FX Unit by John Clarke
  12. Feature: P955H PIC Training Circuit by Peter Brunning
  13. Project: High-current Battery Balancer by Duraid Madina
  14. Feature: Circuit Surgery by Ian Bell
  15. Feature: Flowcode Graphical Programming by Martin Whitlock
  16. Feature: AUDIO OUT by Jake Rothman
  17. Feature: Max’s Cool Beans by Max the Magnifi cent
  18. Feature: Make it with Micromite by Phil Boyce
  19. PCB Order Form
  20. Advertising Index

This is only a preview of the April 2022 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’s Net Work brings readers a round-up of trends emerging in image scanners and the fast-changing world of space and satellite technology. T hese days, images and video are easily captured using remarkably high-resolution smartphones and digital cameras, and images can be hosted either locally or on the cloud. Occasionally though, legacy artwork, photos or films crop up that need digitising – faced with piles of prints, 35mm slides or strips of negatives, a flatbed scanner with a transparency adaptor is the obvious answer. Some readers doubtless remember the ‘three pass’ scanner (one pass per RGB colour), which operated painfully slowly via a PC parallel port or a ‘fast’ SCSI card. 30 years on, and a new addition arrived in my worklab in the form of a flatbed USB film scanner. Nothing out of the ordinary, but research had showed that flatbed scanners had gone the same way as webcams in terms of price, support and availability. There’s a dearth of available flatbed film scanners, and prices for what seem like long-in-the-tooth legacy units were high – if you could find one at all, as some mainstream makers have simply stopped making them. There’s clearly some demand because used ones fetch silly prices on eBay, so I reluctantly paid a premium for a highly regarded Epson V600 Photo scanner because cheaper models like the V550 weren’t available at all. Of course, more time is then wasted figuring out differences in features and wondering what more you actually get for an extra 50% in price (the answer is mainly the software bundle and some infrared specs – see later). The Epson V600 scanner has a transparency backlight in the lid and is targeted at semi-pro home users. The Camelizer plug-in on Amazon.co.uk revealed this model had been on the go for over ten years; hopefully, it’s been updated over time, but prices had gone up approximately 50% over the duration and are touching £300 (or more) today (The similar but unavailable V550 was £200). So, this set some alarm bells ringing: if it was launched in the era of Windows 7 or 8, how would it fare today under Windows 10 or even Windows 11? Regular PC users know that installing add-ons like scanners usually takes either ten minutes or ten hours. Epson clearly stated that it was W10 and W11 compatible, but my own research indicated what to expect if installing one on a modern PC. Customer reviews and forum posts revealed that several users had complained of software lockups under Windows 10 and eventually some deep links to updated drivers were found: in Epson’s case, these should be installed before connecting the scanner, so I downloaded them in advance, ready for when the scanner arrived. Back to the future My installation initially went perfectly under Windows 10, despite having an Epson all-in-one printer also installed on the same PC. I found I could select the V600 scanner in both the 32-bit and 64-bit versions of PaintShop Pro. (Therein lies another undocumented problem: legacy scanner TWAIN drivers, as well as expensive plug-in graphics filters, are often only compatible with 32-bit graphics software. Happily, PaintShop Pro provides both 32-bit and 64-bit versions for backwards compatibility: I run both versions on the same PC mainly for that reason.) The scanner is fast and accurate but, disappointingly, some o f t h e s c a n n e r ’s Help resources were very dated HTML pages that looked like a throwback to Epson’s film-capable mid-range V600 Photo scanner with transparency unit. Film scanner choices are becoming limited as users migrate over to digital media. 12 Kodak’s Mini Digital Film and Slide Scanner will digitise images at the press of a button and store them on a memory card. (Amazon.co.uk) Windows XP, and unsurprisingly the software instructions did not cover the entirely new version I’d tried under Windows 10. Oddly, some major documented scanner features and functions were missing altogether. One of them was Epson’s highly regarded Digital Image Correction and Enhancement (ICE), which can help remove ‘stubborn dust marks’ on some types of film. Such ICE-enabled scanners contain infrared hardware to highlight specks of dust and scratches ‘invisibly’ and digitally erase them from the raw image, which is why you buy them: the Digital ICE option was not available in the latest Epson driver. The familiar old ‘Home’ or ‘Professional’ setting modes weren’t there either. Eating into those ten hours, more trials with legacy drivers eventually cured the problem, for now at least. Although the supplied ‘Epson Scan’ software on CD was showing its age, it did include Digital ICE options. It seems the latest ‘Scan 2’ update does not. Full Auto, Home and Professional modes were restored on my W10 setup too. The software’s dated, but it works, though the signs are less promising for Windows 11 upgraders. One forum user stated that Epson offered them a lite version of professional Silverfast software (www.silverfast.com) as it includes iSRD (infrared-based Dust & Scratch Removal). If ICE is a ‘must-have’ then Silverfast SE will set you back another € 49. For many flatbed scanner owners though, the go-to source for universally Practical Electronics | April | 2022 compatible and sophisticated scanner software is undoubtedly VueScan. Its features include ‘infrared cleaning’ and it can drive nearly 6,000 scanners, even obsolete ones. VueScan’s Professional edition (for slides and film) costs £70. VueScan’s user manual can be browsed at: https://bit.ly/pe-mar22-vue If a flatbed scanner isn’t for you, a number of little standalone film scanners is available, some having a built-in LCD screen. They may be ideal projects for non-computer users, and some can even copy images from 8mm and Super 8 cine film manually, frame by frame. They scan at the press of a button and files are saved to an SD card. The KODAK Mini Digital Film and Slide Scanner at £129.99 is worth a look, and there are many imported models to choose from, ranging from £60 or £70 or so. Reviews are very mixed though, so check them out carefully. Owners of Epson’s higher-end scanners might like to know that third-party film adaptors are available on eBay, Etsy and Amazon. These 3D-printed holders enable legacy formats such as 110, 126, 127, APS, Brownie or even Kodak Disc films to be digitised. As the supply of flatbed scanners becomes ever more limited, now might be the time to grab one while you can. Onwards and upwards In September 2021’s issue I wrote about Sir Richard Branson’s space launch venture, Virgin Orbit, which uses a specially adapted 747 jumbo jet to place satellites into orbit. In January, the Cosmic Girl 747 carrying the LauncherOne rocket vehicle flew from the Mojave Air and Space Port and completed a third successful mission, lofting seven satellites into orbit – the first time this orbit has been reached by launching from the West Coast, the company says. The Virgin Orbit flight had an RAF pilot at the helm and, by reaching further out over the ocean, it was able to follow a trajectory that a ground-launched vehicle would hitherto have found impossible. This shortcut to space saves time and fuel that satellites would otherwise have expended before reaching their target orbit. Additionally, the 747 flew through weather conditions that would have grounded a conventional launchpad operation, and Virgin Orbit’s mode of operation was also able to offer a very rapid turnaround for a last-minute satellite customer, they say: no need to wait for ‘a full bus of passengers’ before heading into space. Trade sources say that one satellite – the ADLER-1, an acronym for ‘Austrian Debris Detection Low Earth (Orbit) Reconnoiter’ – was built in Glasgow, Practical Electronics | April | 2022 Scotland by the US satellite company Spire Global before being shipped to the US for launching. Partnering with the Austrian Space Forum and Findus Venture GmbH, the sensors on board the ADLER-1 satellite Autoflight’s eVTOL Prosperity I flying over London (artist’s impression). are dedicated to tracking ‘micro space Taxiing to take off Anyone who hails a cab for trips around debris’ that is orbiting the Earth. According to infographics published town may be offered another travel by the United Nations Office for Outer choice in the future: a flying shared Space Affairs (UNOOS) at https://tinyurl. ‘taxi’ is being introduced by Autoflight, com/ycecrhxk, there are 2,700 satellites the Chinese builders of electric vertical sharing their orbits with 8,800 tonnes of take-off and landing (eVTOL) vehicles. space junk including nearly 5,000 defunct Autoflight produces a range of industrial satellites and rocket stages. Although eVTOL unmanned cargo drones and is these large objects can be tracked from now turning its attention to building a manned passenger-carrying craft called ground stations, there are estimated to be another 128 million small items of debris ‘Prosperity I’. The proposed electric air measuring 1mm to 1cm that travel like taxi would have a range of about 250km bullets and cannot be tracked from the and would carry three passengers along ground. ADLER-1 is a cubesat measur- with (phew!) a pilot. Autoflight’s Euroing just 30 x 10 x 10cm and will use an pean R&D hub is being established near innovative short-range CW radar that Munich and the company is currently has not been tried in space until now, seeking European airworthiness cerand a piezo-electric array will detect mi- tification for its aircraft, with the aim croparticles, also estimating the energy of starting passenger services in 2025. they impart on impact. Virgin Orbit has now completed three Aldi chasing Amazon Following hard on the heels of Amazon’s successful missions and has chalked up some repeat business as well. Back home Just Walk Out retail stores mentioned here in Britain, the next milestone of before in Net Work, the German superthe UK National Space Strategy should market chain Aldi, now the fifth biggest be reached in Summer this year, when store brand in the UK, has opened its it’s expected that Virgin Orbit will com- first ‘cashierless store’ for public testmence flights from Spaceport Cornwall ing in Greenwich, London. Called Aldi (https://spaceportcornwall.com), the first Shop&Go, it uses camera technology proof a series of specially adapted airstrips vided by AiFi (https://aifi.com/) along around the country that will enable satel- with an obligatory mobile app that tots up the shopping trolley automatically lites to be launched into LEO with none of the drawbacks of launchpad-based before charging your account on exit. missions. The UK Government’s stated Those wanting to buy a ‘Challenge 25 intention is to capture the European product’ like alcohol can opt for an AI facial age recognition scan provided by small satellite launch market by 2030. Many readers might know that Corn- the secure digital ID platform Yoti (or a wall played host in 1901 to Marconi’s real human can check the buyer’s age). A ring of bogus product reviewers first transatlantic radio message broadcast to Newfoundland using a spark based in Germany has been broken up transmitter (see https://en.wikipedia. after Amazon obtained High Court inorg/wiki/Poldhu). Cornwall is also junctions against its operators. Some home to the Goonhilly Down ground 20,000 reviewers in the UK alone were station, whose fine heritage started said to be giving five-star reviews after with receiving the world’s first trans- receiving products for which they were atlantic TV signal in 1962 via Telstar, subsequently re-imbursed. Finally, do check the Net Work blog on the first communications satellite. In 1977, Goonhilly Down played a criti- the PE website (www.electronpublishing. cal role in the roll-out of the Internet com), where the links mentioned above are ready made for you. You might also as we know it today – more history is at: www.goonhilly.org/ges-heritage. find reader feedback and more updates there too. See you next month! More recently, Cornwall held out the tantalising prospect of mining its own The author can be reached at: lithium, as mentioned in earlier colalan<at>epemag.net umns – Cornwall is quite the place to be! 13