Silicon ChipThe Fox Report - June 2022 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Subscriptions: PE Subscription
  4. Subscriptions
  5. Publisher's Letter: How to annoy customers and lose them
  6. Feature: Positivity follows the gloom by Mark Nelson
  7. Feature: The Fox Report by Barry Fox
  8. Project: Net Work by Alan Winstanley
  9. Project: Full-wave Universal Motor Speed Controller by JOHN CLARKE
  10. Project: 8-pin 14-pin 20-pin PIC PROGRAMMING HELPER by TIM BLYTHMAN
  11. Project: Advanced GPS Computer by Tim Blythman
  12. Feature: Max’s Cool Beans by Max the Magnificent
  13. Back Issues: Max’s Cool Beans by Max the Magnificent
  14. Feature: Circuit Surgery by Ian Bell
  15. Feature: Make it with Micromite by Phil Boyce
  16. Feature: AUDIO OUT by Jake Rothman
  17. Feature: Electronic Building Blocks by Julian Edgar
  18. PCB Order Form
  19. Advertising Index

This is only a preview of the June 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)
The Fox Report Barry Fox’s technology column High drama, but low tech C ovid lockdown has changed the face of cinema by forcing the movie industry to embrace Pay Per View streaming of recent releases. Even though inexpensive HDMI-to-USB equipment is available for use with a PC, along with free open-source software to circumvent copy-protection and ‘rip’ the material to unprotected MP4 files, there has been no obvious explosion in piracy. Theatres and music venues have also found new paying audiences by streaming plays and concerts into homes, some for free at the height of the pandemic, but now for hard cash. Although the technology has been maturing, there are still painful reminders that arts folk generally know more about artistic production than selling content online. I signed up to stream a production by the Young Vic Theatre of the play Best of Enemies, a new play (https:// bit.ly/pe-jun22-boe) by James Graham (author of the TV play Quiz, which was about the ‘coughing major’ who won a million on a TV quiz show). Best of Enemies dramatises one of the first great TV debates, which took place in the US during the 1968 Presidential campaign between Richard Nixon and Hubert Humphrey. US viewers hugely enjoyed watching opinionated conservative commentator William F Buckley Jr. tangle very publicly with equally opinionated liberal author and arch-enemy Gore Vidal. Great, but… Let me say straight off that the Best of Enemies play is hugely entertaining and the Young Vic production excellent. The problem was the technical handling and viewer guidance for the ‘Best Seat in Your House’ streaming system used. Unlike most home-streamed events, the start time was fixed and there was no option to 10 re-view later. If a paying customer experienced any technical problems, there was no second chance to watch. This was made clear in advance: ‘The performance is being broadcast live, so please join on time – we don’t want you to miss anything! The performance will only be available to watch for the duration of the live broadcast’ warned the organisers. ‘If you have any problems with your broadcast please head to our FAQs page as a first step, and if you can’t find what you’re looking for, we’re always here to help at boxoffice<at> youngvic.org’. But there was no helpline phone number to call. Click and join As recommended by a pre-show instruction email, I ‘clicked to join the broadcast’ half an hour ahead of time to check the connection. What I then got was a short, recorded loop from a Young Vic artistic guru who obviously already knew the play inside out so also knew how the actors would be moving round the theatre stage – unlike paying customers, who could have no advance idea what they would be seeing. The artistic gentleman enthusiastically told us that we had a choice of ten camera angles which we could switch between. What only became evident in hindsight was that until viewers had watched the play for a while and got a feel for the direction, they should play safe and choose the last camera option on the list, the ‘Directors Cut’; and only experiment with the nine other angles when they felt confident. Lacking this vital guidance ahead of time I wasted the early part of the play trying to reconcile the different camera angles with the continual, wide-ranging movement of the actors. Viewers should also have been talked through the other confusing options offered, such as Auto Quality and Unpin and Sound On. Technical faults During the play, the screen frequently and disconcertingly went briefly black. This was clearly quite different from data buffering and most likely caused by faulty camera switching on one or more of the views. There should have been flashed-up warnings telling people not to try and adjust anything. But there was no guidance. Feedback I raised all this with the Young Vic Theatre Management after the event. What I got back, after a reminder, was of little value: ‘I’d like to offer my sincerest apologies (etc etc etc) …about the difficulties you had with the streamed performance of Best of Enemies… Your feedback has already been passed on and taken into account for our next shows. As you no doubt know, our venture into streamed performances is a new one to us so any and all feedback is invaluable. I am sorry that you had a bad experience with our tech…Once again, I’d like to apologise for the difficulties you experienced and thank you for your patience with us while we take into account all the feedback available to us in order to make the live streams more streamlined.’ I’ve heard nothing further. No acknowledgement of the need for better customer guidance, no explanation of or apology for the technical glitches and certainly no chance to view the stream again without glitches and with the benefit of camera angle hindsight. Practical Electronics | June | 2022 In the mid-1920s, Charles Francis part in bringing television to the masses. Early Japanese TV Jenkins in the US and John Logie Baird And buried in JVC’s vaults there are Japan, May 1930: received picture using Kenjiro Takayanagi’s pioneering TV system. W ho invented television? Opinions differ, largely depending on the country where the question is asked and the company answering it. But the basics are generally agreed. In 1884 German Paul Nipkow proposed a spinning disc with a spiral track of holes that let light through to a photo sensor, to scan an image. GET LATES THE T COP Y OF TEACH OUR -IN SE RIES AVAIL AB NOW! LE in the UK tried to turn the Nipkow disc into a working TV system. Baird got further with the idea than Jenkins, but TV based on mechanical moving parts was always going to fail in the end. Starting in 1927, US inventor Philo Farnsworth patented an all-electronic scanning system. Russian emigree David Sarnoff and the Radio Corporation of America threw money at the idea and made it work – with the help of another Russian emigree, Vladimir Zworykin. Sarnoff bullied Farnsworth out of his patent rights – just as he would later do to Edwin Armstrong, inventor of FM radio. In April 1927 AT&T Bell Telephone Labs made headline news by sending all-electronic pictures by copper wire from Washington to New York. In the mid-1930s, Telefunken in Germany and EMI in the UK took the development of all-electronic television to new levels, with systems that used over 400 scanning lines and were then thought of as ‘high definition’. There is seldom any mention of Japan’s role in early television, but JVC, the Japan Victor Company, will tell you that Kenjiro Takayanagi (1899-1990) played a major and largely sidelined Order direct from Electron Publishing PRICE £8.99 (includes P&P to UK if ordered direct from us) pictures to prove it. Takayanagi started out as a teacher, then worked for the Japan Broadcasting Company and joined the Victor Company where he rose to the role of vice president. He used a mechanical Nipkow disk and a photoelectric tube in the transmitter, but electronic Braun cathode ray tube in the receiver. His first transmission, which used 40 scanning lines, was on 25 December 1926. In 1928 he sent and received an image of a person, again with 40 scanning lines at 14 frames/second. Takayanagi built an electronic television camera in 1933, shortly after Vladimir Zworykin in the US, and went on to make a 100-scanning-line, 20-frames-per-second system. More technology stories and images at: https://tekkiepix.com/stories Practical Electronics is delighted to be able to help promote Barry Fox’s project to preserve the visual history of preInternet electronics. Visit www.tekkiepix.com for fascinating stories and a chance to support this unique online collection. EE FR -ROM CD ELECTRONICS TEACH-IN 9 £8.99 FROM THE PUBLISHERS OF GET TESTING! Electronic test equipment and measuring techniques, plus eight projects to build FREE CD-ROM TWO TEACH -INs FOR THE PRICE OF ONE • Multimeters and a multimeter checker • Oscilloscopes plus a scope calibrator • AC Millivoltmeters with a range extender • Digital measurements plus a logic probe • Frequency measurements and a signal generator • Component measurements plus a semiconductor junction tester PIC n’ Mix Including Practical Digital Signal Processing PLUS... YOUR GUIDE TO THE BBC MICROBIT Teach-In 9 Teach-In 9 – Get Testing! A LOW-COST ARM-BASED SINGLE-BOARD COMPUTER Get Testing Three Microchip PICkit 4 Debugger Guides Files for: PIC n’ Mix PLUS Teach-In 2 -Using PIC Microcontrollers. In PDF format This series of articles provides a broad-based introduction to choosing and using a wide range of test gear, how to get the best out of each item and the pitfalls to avoid. It provides hints and tips on using, and – just as importantly – interpreting the results that you get. The series deals with familiar test gear as well as equipment designed for more specialised applications. The articles have been designed to have the broadest possible appeal and are applicable to all branches of electronics. The series crosses the boundaries of analogue and digital electronics with applications that span the full range of electronics – from a single-stage transistor amplifier to the most sophisticated microcontroller system. There really is something for everyone! Each part includes a simple but useful practical test gear project that will build into a handy gadget that will either extend the features, ranges and usability of an existing item of test equipment or that will serve as a stand-alone instrument. We’ve kept the cost of these projects as low as possible, and most of them can be built for less than £10 (including components, enclosure and circuit board). © 2018 Wimborne Publishing Ltd. www.epemag.com Teach In 9 Cover.indd 1 01/08/2018 19:56 PLUS! You will receive the software for the PIC n’ Mix series of articles and the full Teach-In 2 book – Using PIC Microcontrollers – A practical introduction – in PDF format. Also included are Microchip’s MPLAB ICD 4 In-Circuit Debugger User’s Guide; MPLAB PICkit 4 In-Circuit Debugger Quick Start Guide; and MPLAB PICkit4 Debugger User’s Guide. ORDER YOUR COPY TODAY: www.electronpublishing.com Practical Electronics | June | 2022 11