Silicon ChipSoftware: too many bugs, too many updates - July 2021 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Software: too many bugs, too many updates
  4. Feature: The 2020 mission to Mars by Dr David Maddison
  5. Project: 20A DC Motor Speed Controller by John Clarke
  6. Feature: How USB Power Delivery (USB-PD) works by Andrew Levido
  7. Feature: El Cheapo Modules: USB-PD chargers by Jim Rowe
  8. Project: Model Railway Level Crossing by Les Kerr
  9. Project: Silicon Labs-based FM/AM/SW Digital Radio by Charles Kosina
  10. Review: Tecsun PL-990 radio receiver by Ross Tester
  11. Project: Advanced GPS Computer – Part 2 by Tim Blythman
  12. Serviceman's Log: I’ve repaired planes before, but never tanks by Dave Thompson
  13. Vintage Radio: The Rowe AMI JAL-200 jukebox by Jim Greig
  14. PartShop
  15. Product Showcase
  16. Market Centre
  17. Advertising Index
  18. Notes & Errata: Advanced GPS Computer, June 2021; Mini Arcade Pong, June 2021; Refined Full-Wave Motor Speed Controller, April 2021; USB Flexitimer, June 2018
  19. Outer Back Cover

This is only a preview of the July 2021 issue of Silicon Chip.

You can view 41 of the 112 pages in the full issue, including the advertisments.

For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.

Items relevant to "20A DC Motor Speed Controller":
  • 20A DC Motor Speed Controller PCB [11006211] (AUD $7.50)
  • PIC16F1459-I/P programmed for the 20A DC Motor Speed Controller [1100621A.HEX] (Programmed Microcontroller, AUD $10.00)
  • Firmware and source code for the 20A DC Motor Speed Controller [1100621A] (Software, Free)
  • 20A DC Motor Speed Controller PCB pattern (PDF download) [11006211] (Free)
Articles in this series:
  • The History of USB (June 2021)
  • The History of USB (June 2021)
  • How USB Power Delivery (USB-PD) works (July 2021)
  • How USB Power Delivery (USB-PD) works (July 2021)
Articles in this series:
  • El Cheapo Modules From Asia - Part 1 (October 2016)
  • El Cheapo Modules From Asia - Part 1 (October 2016)
  • El Cheapo Modules From Asia - Part 2 (December 2016)
  • El Cheapo Modules From Asia - Part 2 (December 2016)
  • El Cheapo Modules From Asia - Part 3 (January 2017)
  • El Cheapo Modules From Asia - Part 3 (January 2017)
  • El Cheapo Modules from Asia - Part 4 (February 2017)
  • El Cheapo Modules from Asia - Part 4 (February 2017)
  • El Cheapo Modules, Part 5: LCD module with I²C (March 2017)
  • El Cheapo Modules, Part 5: LCD module with I²C (March 2017)
  • El Cheapo Modules, Part 6: Direct Digital Synthesiser (April 2017)
  • El Cheapo Modules, Part 6: Direct Digital Synthesiser (April 2017)
  • El Cheapo Modules, Part 7: LED Matrix displays (June 2017)
  • El Cheapo Modules, Part 7: LED Matrix displays (June 2017)
  • El Cheapo Modules: Li-ion & LiPo Chargers (August 2017)
  • El Cheapo Modules: Li-ion & LiPo Chargers (August 2017)
  • El Cheapo modules Part 9: AD9850 DDS module (September 2017)
  • El Cheapo modules Part 9: AD9850 DDS module (September 2017)
  • El Cheapo Modules Part 10: GPS receivers (October 2017)
  • El Cheapo Modules Part 10: GPS receivers (October 2017)
  • El Cheapo Modules 11: Pressure/Temperature Sensors (December 2017)
  • El Cheapo Modules 11: Pressure/Temperature Sensors (December 2017)
  • El Cheapo Modules 12: 2.4GHz Wireless Data Modules (January 2018)
  • El Cheapo Modules 12: 2.4GHz Wireless Data Modules (January 2018)
  • El Cheapo Modules 13: sensing motion and moisture (February 2018)
  • El Cheapo Modules 13: sensing motion and moisture (February 2018)
  • El Cheapo Modules 14: Logarithmic RF Detector (March 2018)
  • El Cheapo Modules 14: Logarithmic RF Detector (March 2018)
  • El Cheapo Modules 16: 35-4400MHz frequency generator (May 2018)
  • El Cheapo Modules 16: 35-4400MHz frequency generator (May 2018)
  • El Cheapo Modules 17: 4GHz digital attenuator (June 2018)
  • El Cheapo Modules 17: 4GHz digital attenuator (June 2018)
  • El Cheapo: 500MHz frequency counter and preamp (July 2018)
  • El Cheapo: 500MHz frequency counter and preamp (July 2018)
  • El Cheapo modules Part 19 – Arduino NFC Shield (September 2018)
  • El Cheapo modules Part 19 – Arduino NFC Shield (September 2018)
  • El cheapo modules, part 20: two tiny compass modules (November 2018)
  • El cheapo modules, part 20: two tiny compass modules (November 2018)
  • El cheapo modules, part 21: stamp-sized audio player (December 2018)
  • El cheapo modules, part 21: stamp-sized audio player (December 2018)
  • El Cheapo Modules 22: Stepper Motor Drivers (February 2019)
  • El Cheapo Modules 22: Stepper Motor Drivers (February 2019)
  • El Cheapo Modules 23: Galvanic Skin Response (March 2019)
  • El Cheapo Modules 23: Galvanic Skin Response (March 2019)
  • El Cheapo Modules: Class D amplifier modules (May 2019)
  • El Cheapo Modules: Class D amplifier modules (May 2019)
  • El Cheapo Modules: Long Range (LoRa) Transceivers (June 2019)
  • El Cheapo Modules: Long Range (LoRa) Transceivers (June 2019)
  • El Cheapo Modules: AD584 Precision Voltage References (July 2019)
  • El Cheapo Modules: AD584 Precision Voltage References (July 2019)
  • Three I-O Expanders to give you more control! (November 2019)
  • Three I-O Expanders to give you more control! (November 2019)
  • El Cheapo modules: “Intelligent” 8x8 RGB LED Matrix (January 2020)
  • El Cheapo modules: “Intelligent” 8x8 RGB LED Matrix (January 2020)
  • El Cheapo modules: 8-channel USB Logic Analyser (February 2020)
  • El Cheapo modules: 8-channel USB Logic Analyser (February 2020)
  • New w-i-d-e-b-a-n-d RTL-SDR modules (May 2020)
  • New w-i-d-e-b-a-n-d RTL-SDR modules (May 2020)
  • New w-i-d-e-b-a-n-d RTL-SDR modules, Part 2 (June 2020)
  • New w-i-d-e-b-a-n-d RTL-SDR modules, Part 2 (June 2020)
  • El Cheapo Modules: Mini Digital Volt/Amp Panel Meters (December 2020)
  • El Cheapo Modules: Mini Digital Volt/Amp Panel Meters (December 2020)
  • El Cheapo Modules: Mini Digital AC Panel Meters (January 2021)
  • El Cheapo Modules: Mini Digital AC Panel Meters (January 2021)
  • El Cheapo Modules: LCR-T4 Digital Multi-Tester (February 2021)
  • El Cheapo Modules: LCR-T4 Digital Multi-Tester (February 2021)
  • El Cheapo Modules: USB-PD chargers (July 2021)
  • El Cheapo Modules: USB-PD chargers (July 2021)
  • El Cheapo Modules: USB-PD Triggers (August 2021)
  • El Cheapo Modules: USB-PD Triggers (August 2021)
  • El Cheapo Modules: 3.8GHz Digital Attenuator (October 2021)
  • El Cheapo Modules: 3.8GHz Digital Attenuator (October 2021)
  • El Cheapo Modules: 6GHz Digital Attenuator (November 2021)
  • El Cheapo Modules: 6GHz Digital Attenuator (November 2021)
  • El Cheapo Modules: 35MHz-4.4GHz Signal Generator (December 2021)
  • El Cheapo Modules: 35MHz-4.4GHz Signal Generator (December 2021)
  • El Cheapo Modules: LTDZ Spectrum Analyser (January 2022)
  • El Cheapo Modules: LTDZ Spectrum Analyser (January 2022)
  • Low-noise HF-UHF Amplifiers (February 2022)
  • Low-noise HF-UHF Amplifiers (February 2022)
  • A Gesture Recognition Module (March 2022)
  • A Gesture Recognition Module (March 2022)
  • Air Quality Sensors (May 2022)
  • Air Quality Sensors (May 2022)
  • MOS Air Quality Sensors (June 2022)
  • MOS Air Quality Sensors (June 2022)
  • PAS CO2 Air Quality Sensor (July 2022)
  • PAS CO2 Air Quality Sensor (July 2022)
  • Particulate Matter (PM) Sensors (November 2022)
  • Particulate Matter (PM) Sensors (November 2022)
  • Heart Rate Sensor Module (February 2023)
  • Heart Rate Sensor Module (February 2023)
  • UVM-30A UV Light Sensor (May 2023)
  • UVM-30A UV Light Sensor (May 2023)
  • VL6180X Rangefinding Module (July 2023)
  • VL6180X Rangefinding Module (July 2023)
  • pH Meter Module (September 2023)
  • pH Meter Module (September 2023)
  • 1.3in Monochrome OLED Display (October 2023)
  • 1.3in Monochrome OLED Display (October 2023)
  • 16-bit precision 4-input ADC (November 2023)
  • 16-bit precision 4-input ADC (November 2023)
  • 1-24V USB Power Supply (October 2024)
  • 1-24V USB Power Supply (October 2024)
  • 14-segment, 4-digit LED Display Modules (November 2024)
  • 0.91-inch OLED Screen (November 2024)
  • 0.91-inch OLED Screen (November 2024)
  • 14-segment, 4-digit LED Display Modules (November 2024)
  • The Quason VL6180X laser rangefinder module (January 2025)
  • TCS230 Colour Sensor (January 2025)
  • The Quason VL6180X laser rangefinder module (January 2025)
  • TCS230 Colour Sensor (January 2025)
  • Using Electronic Modules: 1-24V Adjustable USB Power Supply (February 2025)
  • Using Electronic Modules: 1-24V Adjustable USB Power Supply (February 2025)
Items relevant to "Model Railway Level Crossing":
  • Model Railway Level Crossing PCB [09108211] (AUD $5.00)
  • Pair of PIC12F617-I/P chips for the Model Railway Level Crossing [0910821A/B/C.HEX] (Programmed Microcontroller, AUD $15.00)
  • ISD1820-based voice recording and playback module (Component, AUD $7.50)
  • Firmware, source code and sound recording for the Model Railway Level Crossing [0910211A-C] (Software, Free)
  • Model Railway Level Crossing PCB pattern (PDF download) [09108211] (Free)
  • Mechanical diagrams and label artwork for the Railway Level Crossing (PDF Download) (Panel Artwork, Free)
Items relevant to "Silicon Labs-based FM/AM/SW Digital Radio":
  • SiLabs FM/AM/SW Digital Radio PCB [CSE210301C] (AUD $7.50)
  • ATmega328P programmed with the firmware for the SiLabs FM/AM/SW Digital Radio [CSE210301.HEX] (Programmed Microcontroller, AUD $10.00)
  • Pulse-type rotary encoder with pushbutton and 18t spline shaft (Component, AUD $3.00)
  • Si4732-A10 AM/FM/SW/LW/RDS Radio Receiver IC (Component, AUD $20.00)
  • Firmware and source code for the SiLabe FM-AM-SW Digital Radio [CSE210301.HEX] (Software, Free)
  • SiLabs FM/AM/SW Digital Radio PCB pattern (PDF download) [CSE210301C] (Free)
  • Drilling/cutting diagrams and front panel artwork for the SiLabs-based FM-AM-SW Digital Radio (Free)
Items relevant to "Advanced GPS Computer – Part 2":
  • Advanced GPS Computer PCB [05102211] (AUD $7.50)
  • PIC32MX170F256B-50I/SP programmed for the Advanced GPS Computer [0510221A.hex] (Programmed Microcontroller, AUD $15.00)
  • DS3231 real-time clock IC (SOIC-16) (Component, AUD $7.50)
  • VK2828U7G5LF TTL GPS/GLONASS/GALILEO module with antenna and cable (Component, AUD $25.00)
  • MCP4251-502E/P dual 5kΩ digital potentiometer (Component, AUD $3.00)
  • Micromite LCD BackPack V3 complete kit (Component, AUD $75.00)
  • Matte/Gloss Black UB3 Lid for Advanced GPS Computer (BackPack V3) or Pico BackPack (PCB, AUD $5.00)
  • Firmware for the Advanced GPS Computer [0510221A.HEX] (Software, Free)
  • Advanced GPS Computer PCB pattern (PDF download) [05102211] (Free)
  • Advanced GPS Computer box cutting diagram and lid dimensions (Panel Artwork, Free)
Articles in this series:
  • Advanced GPS Computer - Part 1 (June 2021)
  • Advanced GPS Computer - Part 1 (June 2021)
  • Advanced GPS Computer – Part 2 (July 2021)
  • Advanced GPS Computer – Part 2 (July 2021)

Purchase a printed copy of this issue for $10.00.

SILICON SILIC CHIP www.siliconchip.com.au Publisher/Editor Nicholas Vinen Technical Editor John Clarke, B.E.(Elec.) Technical Staff Jim Rowe, B.A., B.Sc. Bao Smith, B.Sc. Tim Blythman, B.E., B.Sc. Nicolas Hannekum, Dip. Elec. Tech. Technical Contributor Duraid Madina, B.Sc, M.Sc, PhD Reader Services Rhonda Blythman, BSc, LLB, GDLP Advertising Enquiries Glyn Smith Phone (02) 9939 3295 Mobile 0431 792 293 glyn<at>siliconchip.com.au Regular Contributors Dave Thompson David Maddison B.App.Sc. (Hons 1), PhD, Grad.Dip.Entr.Innov. Geoff Graham Associate Professor Graham Parslow Ian Batty Cartoonist Brendan Akhurst Founding Editor (retired) Leo Simpson, B.Bus., FAICD Staff (retired) Ross Tester Ann Morris Greg Swain, B. Sc. (Hons.) Silicon Chip is published 12 times a year by Silicon Chip Publications Pty Ltd. ACN 626 922 870. ABN 20 880 526 923. All material is copyright ©. No part of this publication may be reproduced without the written consent of the publisher. Subscription rates (Australia only): 12 issues (1 year): $105, post paid 24 issues (2 years): $202, post paid For overseas rates, see our website or email silicon<at>siliconchip.com.au Recommended & maximum price only. Editorial office: Unit 1 (up ramp), 234 Harbord Rd, Brookvale, NSW 2100. Postal address: PO Box 139, Collaroy Beach, NSW 2097. Phone (02) 9939 3295. ISSN 1030-2662 Editorial Viewpoint Software: too many bugs, too many updates I can’t be the only person who is sick and tired of the barrage of constant software updates. Between Windows updates, Android updates, Adobe updates, Mozilla updates, App updates, and all the other software packages I use, I spend way too much time dealing with them every day. With some software packages I use only intermittently, they bother me about updating virtually every time I open up a file! And that’s the worst time to do it; I’d much rather they ask me whether I want to update when closing the software than opening it. I’m opening it because I have a task to complete, and I don’t want to stop that task to install another *$(!&#<at> update! It wouldn’t be so bad if these updates fixed bugs, but so often, not only do they fix nothing, but they introduce new bugs. Windows updates are the worst. Some of our staff suffered for weeks from constant ‘blue screens’ and reboots when printing files caused by a Windows update that initially they didn’t even realise had been installed. It cost us a lot of lost productivity until one smart guy figured it out and managed to uninstall that update on the affected machines (one of which was brand new; we thought it might be defective). Microsoft apparently knew about this bug and quickly released a patch to fix it, but the fix didn’t work! I hate to be negative and sound like I’m complaining, but this situation is just ridiculous. One of my pet peeves is how software companies – including the largest, richest ones in the world – prioritise adding features to their software rather than fixing bugs. This sometimes results in serious bugs that cause frequent crashes or otherwise break the software persisting for years, while they are busy adding useless new doo-dads that we don’t need. They are also far more interested in adding bells and whistles than addressing severe performance problems, making the software virtually unusable. For example, I have some software that can take literally hours to perform certain functions, depending on the complexity of the files I am working with. I have developed workarounds to accomplish these tasks in a reasonable timeframe, such as manually splitting the job into smaller chunks, then reassembling it later. I shouldn’t have to do that. I believe these operations could be completed in seconds (or faster) if the algorithms the software used were implemented in an even vaguely intelligent manner. I don’t know the solution to this, but I believe whether through user pressure, legislation or otherwise, the behaviour of software companies has to change. If you bought a car and it broke down several times a day, frequently slowed down to unusable speeds and needed to be brought back to the dealer for modifications every week to keep it roadworthy, you would ask for your money back. Yet we pay hundreds or thousands of dollars for a piece of software and then accept that it behaves in the same manner. That is totally unreasonable. Perhaps the open-source software movement will save us from this life of misery. In some areas, there are already excellent free pieces of software that provide most functions of their commercial equivalents, and they are often less buggy. If the commercial vendors don’t get their collective acts together, they might find themselves losing a lot of business to those alternatives. Printing and Distribution: by Nicholas Vinen 24-26 Lilian Fowler Pl, Marrickville 2204 2 Silicon Chip Australia’s electronics magazine siliconchip.com.au