Silicon ChipContents - June 2022 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Shutting down our old website
  4. Mailbag
  5. Feature: IC Fabrication, Part 1 by Dr David Maddison
  6. Project: Spectral Sound MIDI Synthesiser by Jeremy Leach
  7. Feature: Radar Coach Speed Detector by Allan Linton-Smith
  8. Project: Buck-Boost LED Driver by Tim Blythman
  9. Project: Arduino Programmable Load by Tim Blythman
  10. Project: 500W Power Amplifier, Part 3 by John Clarke
  11. Feature: MOS Air Quality Sensors by Jim Rowe
  12. Project: Revised Battery Charge Controller by John Clarke
  13. Review: Altium Designer 22 by Tim Blythman
  14. Circuit Notebook: RF burst power meter by George Mackiewicz
  15. Circuit Notebook: Artificial candle is ‘ignited’ by a real flame by Aarav Garg
  16. Circuit Notebook: Digital volume control using discrete logic by John Clarke & Raj. K. Gorkhali
  17. Circuit Notebook: An easy way to measure SMDs by Michael Harvey
  18. Serviceman's Log: Ion with the wind by Dave Thompson
  19. Vintage Radio: Admiral 19A11S TV by Dr Hugo Holden
  20. PartShop
  21. Ask Silicon Chip
  22. Market Centre
  23. Advertising Index
  24. Notes & Errata: 500W Power Amplifier pt2, May 2022; Model Railway Semaphore Signal, April 2022
  25. Outer Back Cover

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Items relevant to "":
  • PIC16F88 migration document (PDF) (Software, Free)
Articles in this series:
  • IC Fabrication, Part 1 (June 2022)
  • IC Fabrication, Part 2 (July 2022)
Items relevant to "Spectral Sound MIDI Synthesiser":
  • Spectral Sound MIDI Synthesiser PCB [01106221] (AUD $7.50)
  • Short form kit for the Spectral Sound MIDI Synthesiser (Component, AUD $200.00)
  • Software, firmware & documentation for the Spectral Sound MIDI Synthesiser (Free)
  • Spectral Sound MIDI Synthesiser PCB pattern (PDF download) [01106221] (Free)
  • Front & lid panel labels and drilling diagram for the Spectal Sound MIDI Synthesiser (Panel Artwork, Free)
Items relevant to "Buck-Boost LED Driver":
  • High Power Buck-Boost LED Driver PCB [16103221] (AUD $5.00)
  • 70W COB LED panel - cool white (6000-6500K) (Component, AUD $19.50)
  • 70W COB LED panel - warm white (3000-3200K) (Component, AUD $19.50)
  • Complete kit for the High Power Buck-Boost LED Driver (Component, AUD $80.00)
  • High Power Buck-Boost LED Driver PCB pattern (PDF download) [16103221] (Free)
Items relevant to "Arduino Programmable Load":
  • Arduino Programmable Load PCB [04105221] (AUD $5.00)
  • Firmware for the Arduino-based Programmable Load (Software, Free)
  • Arduino Programmable Load PCB pattern (PDF download) [04105221] (Free)
Items relevant to "500W Power Amplifier, Part 3":
  • 500W Amplifier Module PCB [01107021 RevD] (AUD $25.00)
  • Hard-to-get parts for the 500W Amplifier (Component, AUD $200.00)
  • 500W Amplifier Module PCB pattern (PDF download) [01107021] (Free)
Articles in this series:
  • Fan Controller & Loudspeaker Protector (February 2022)
  • Amplifier Clipping Indicator (March 2022)
  • 500W Power Amplifier, Part 1 (April 2022)
  • 500W Power Amplifier, Part Two (May 2022)
  • 500W Power Amplifier, Part 3 (June 2022)
Items relevant to "MOS Air Quality Sensors":
  • Sample sketches for MOS Air Quality Sensors (Software, Free)
Articles in this series:
  • El Cheapo Modules From Asia - Part 1 (October 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 4 (February 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 7: LED Matrix displays (June 2017)
  • El Cheapo Modules: Li-ion & LiPo Chargers (August 2017)
  • El Cheapo modules Part 9: AD9850 DDS module (September 2017)
  • El Cheapo Modules Part 10: GPS receivers (October 2017)
  • El Cheapo Modules 11: Pressure/Temperature Sensors (December 2017)
  • El Cheapo Modules 12: 2.4GHz Wireless Data Modules (January 2018)
  • El Cheapo Modules 13: sensing motion and moisture (February 2018)
  • El Cheapo Modules 14: Logarithmic RF Detector (March 2018)
  • El Cheapo Modules 16: 35-4400MHz frequency generator (May 2018)
  • El Cheapo Modules 17: 4GHz digital attenuator (June 2018)
  • El Cheapo: 500MHz frequency counter and preamp (July 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 21: stamp-sized audio player (December 2018)
  • El Cheapo Modules 22: Stepper Motor Drivers (February 2019)
  • El Cheapo Modules 23: Galvanic Skin Response (March 2019)
  • El Cheapo Modules: Class D amplifier modules (May 2019)
  • El Cheapo Modules: Long Range (LoRa) Transceivers (June 2019)
  • El Cheapo Modules: AD584 Precision Voltage References (July 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: 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, Part 2 (June 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: LCR-T4 Digital Multi-Tester (February 2021)
  • El Cheapo Modules: USB-PD chargers (July 2021)
  • El Cheapo Modules: USB-PD Triggers (August 2021)
  • El Cheapo Modules: 3.8GHz Digital Attenuator (October 2021)
  • El Cheapo Modules: 6GHz Digital Attenuator (November 2021)
  • El Cheapo Modules: 35MHz-4.4GHz Signal Generator (December 2021)
  • El Cheapo Modules: LTDZ Spectrum Analyser (January 2022)
  • Low-noise HF-UHF Amplifiers (February 2022)
  • A Gesture Recognition Module (March 2022)
  • Air Quality Sensors (May 2022)
  • MOS Air Quality Sensors (June 2022)
  • PAS CO2 Air Quality Sensor (July 2022)
Items relevant to "Revised Battery Charge Controller":
  • Revised Intelligent Battery Charge Controller PCB [14107192] (AUD $7.50)
  • PIC16F88-I/P programmed for the Universal Battery Charge Controller [1410719A.HEX] (Programmed Microcontroller, AUD $15.00)
  • Relay - EA2-5NU (Component, AUD $3.00)
  • IPP80P03P4L-07 high-current P-channel Mosfet (Component, AUD $2.50)
  • Firmware and source code for the Universal Battery Charge Controller [1410719A.HEX] (Software, Free)
  • Revised Battery Charge Controller PCB pattern (PDF download) [14107192] (Free)
  • Universal Battery Charge Controller front panel artwork (PDF download) (Free)
Articles in this series:
  • Have you got a dumb battery charger in your garage? (December 2019)
  • Revised Battery Charge Controller (June 2022)
Items relevant to "RF burst power meter":
  • Firmware for the RF burst power meter (Software, Free)
Items relevant to "Artificial candle is ‘ignited’ by a real flame":
  • Firmware for the Artificial candle using a real flame (Software, Free)

Purchase a printed copy of this issue for $8.50.

Contents Vol.35, No.6 June 2022 12 IC Fabrication, Part 1 0,', 63(&75$/6281' We take an in-depth look at how silicon chips, also known as integrated circuits, are made. ICs form the lifeblood of most modern technology, from computers to medical devices. By Dr David Maddison Semiconductors 6<17+(6,6(5 SDJH 38 Radar Coach Speed Detector The Radar Coach is ideal for measuring the speed of cricket, baseball and footballs. It can also be used to measure your own sprint, or even a car! By Allan Linton-Smith Speed detector review page 40 72 MOS Air Quality Sensors MOS (metal oxide semiconductor) modules are air quality sensors that rely on the behaviour of metal oxide in the presence of air to measure gas levels. By Jim Rowe Low-cost electronic modules 84 Altium Designer 22 We use Altium Designer for all our project PCBs and so with the release of AD22, we wanted to see what new features are available. By Tim Blythman Software review 24 Spectral Sound MIDI Synthesiser The Spectral Sound MIDI Synth is easy to build and can be connected to any MIDI compatible device. It can play up to 18 different notes simultaneously, providing you with a device that can create rich and detailed sounds. By Jeremy Leach Musical instrument project 40 Buck-Boost LED Driver This high-power project drives ridiculously bright 12V LED panels. It delivers up to 8A with adjustable current and voltage. You can even use it to charge batteries from a DC source, or as a 12 ↔ 24V DC converter. By Tim Blythman LED/regulator project 48 Arduino Programmable Load A variable load is indispensible when testing power supplies, driver circuits and the like. Our Arduino shield can handle up to 70W continuous at 15V and 4.7A, with a load resistance between 3.1W and 47W in 15 steps. By Tim Blythman Arduino project 61 500W Power Amplifier, Part 3 Follow these assembly, testing and calibration instructions to finish building the 500W Power Amplifier. By John Clarke Audio project 81 Revised Battery Charge Controller Due to the unavailability of the Si8751 Mosfet driver, we have redesigned our 2019 Universal Battery Charge Controller to use alternative parts. By John Clarke Project update Buck-Boost LED Driver Altium Designer 22 review on page 84 2 Editorial Viewpoint 4 Mailbag 88 Circuit Notebook 92 Serviceman’s Log 98 Vintage Television 1. RF burst power meter 2. Artificial candle using a “real” flame 3. Digital volume control with discrete logic 4. An easy way to measure SMDs Admiral 19A11S TV by Dr Hugo Holden 106 Online Shop 108 Ask Silicon Chip 111 Market Centre 112 Advertising Index