Silicon ChipSupplier price increases - August 2025 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Supplier price increases
  4. Feature: SpaceX, Part 2 by Dr David Maddison VK3DSM
  5. Feature: Amplifier Cooling, Part 1 by Julian Edgar
  6. Feature: Modules: Thin-Film Pressure Sensor by Tim Blythman
  7. Project: USB-C Power Monitor, Part 1 by Tim Blythman
  8. Project: RP2350B Development Board by Geoff Graham & Peter Mather
  9. Review: Rigol DHO924S Oscilloscope by Tim Blythman
  10. Project: Mic the Mouse by John Clarke
  11. Feature: The Boeing 737 MAX disaster by Brandon Speedie
  12. Subscriptions
  13. Project: Ducted Heat Transfer Controller Part 1 by Julian Edgar & John Clarke
  14. Serviceman's Log: Mirror, mirror on the door by Dave Thompson
  15. PartShop
  16. Vintage Radio: Silvertone Model 18 AM/FM radio by Associate Professor Graham Parslow
  17. PartShop
  18. Ask Silicon Chip
  19. Market Centre
  20. Advertising Index
  21. Notes & Errata: Vintage Radio: Emerson 888, May 2025
  22. Outer Back Cover

This is only a preview of the August 2025 issue of Silicon Chip.

You can view 46 of the 104 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.

Articles in this series:
  • SpaceX (July 2025)
  • SpaceX (July 2025)
  • SpaceX, Part 2 (August 2025)
  • SpaceX, Part 2 (August 2025)
Articles in this series:
  • Amplifier Cooling, Part 1 (August 2025)
  • Amplifier Cooling, Part 1 (August 2025)
Items relevant to "Modules: Thin-Film Pressure Sensor":
  • Sample software for the Thin-film Pressure Sensor (Free)
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)
  • 14-segment, 4-digit LED Display Modules (November 2024)
  • 0.91-inch OLED Screen (November 2024)
  • TCS230 Colour Sensor (January 2025)
  • The Quason VL6180X laser rangefinder module (January 2025)
  • TCS230 Colour Sensor (January 2025)
  • The Quason VL6180X laser rangefinder module (January 2025)
  • Using Electronic Modules: 1-24V Adjustable USB Power Supply (February 2025)
  • Using Electronic Modules: 1-24V Adjustable USB Power Supply (February 2025)
  • Low-cost electronic modules: 8×16 LED Matrix module (July 2025)
  • Low-cost electronic modules: 8×16 LED Matrix module (July 2025)
  • Modules: Thin-Film Pressure Sensor (August 2025)
  • Modules: Thin-Film Pressure Sensor (August 2025)
Items relevant to "USB-C Power Monitor, Part 1":
  • USB-C Power Monitor PCB set [04102251-3] (AUD $7.50)
  • PIC16F18146-I/SO programmed for the USB-C Power Monitor [0410225A.HEX] (Programmed Microcontroller, AUD $10.00)
  • 0.91-inch white OLED with 4-pin I²C interface (Component, AUD $7.50)
  • USB-C Power Monitor short-form kit (Component, AUD $60.00)
  • Firmware for the USB-C Power Monitor [0410225A.HEX] (Software, Free)
  • USB-C Power Monitor PCB patterns [04102251-2] (Free)
Articles in this series:
  • USB-C Power Monitor, Part 1 (August 2025)
  • USB-C Power Monitor, Part 1 (August 2025)
Items relevant to "RP2350B Development Board":
  • ESP-PSRAM64 64Mb (8MB) PSRAM chip (SOIC-8) (Component, AUD $5.00)
  • APS6404L-3SQR-SN 8MiB PSRAM chip (SOIC-8) (Component, AUD $5.00)
  • Assembled RP2350B Development Board (Component, AUD $30.00)
  • PicoMite 2 firmware (Software, Free)
  • RP2350B Development Board PCB pattern (PDF download) (Free)
  • RP2350B Development Board PCB assembly files (PCB Pattern, Free)
  • 40-pin male snappable header (Component, AUD $1.00)
Items relevant to "Mic the Mouse":
  • Mic the Mouse PCB set [08105251-2] (AUD $7.50)
  • PIC16F15214-I/SN programmed for Mic the Mouse [1810525A.HEX] (Programmed Microcontroller, AUD $10.00)
  • Mic the Mouse complete kit (Component, AUD $37.50)
  • Mic the Mouse firmware (1810525A.HEX) (Software, Free)
  • Mic the Mouse PCB patterns (PDF download) [08105251-2] (Free)
Items relevant to "Ducted Heat Transfer Controller Part 1":
  • Duct Heat Transfer Controller main PCB [17101251] (AUD $10.00)
  • Duct Heat Transfer Controller sensor PCB [17101252] (AUD $2.50)
  • Duct Heat Transfer Controller switch panel PCB [17101253] (AUD $2.50)
  • PIC16F1459-I/P programmed for the Ducted Heat Transfer Controller (1710125A.HEX) (Programmed Microcontroller, AUD $10.00)
  • Firmware (ASM and HEX) files for the Ducted Heat Transfer Controller (1710125A.HEX) (Software, Free)
  • Duct Heat Transfer Controller PCB patterns (PDF download) [17101251-3] (Free)
  • Duct Heat Transfer Controller panel artwork & cutting diagrams (Free)
Articles in this series:
  • Ducted Heat Transfer Controller Part 1 (August 2025)
  • Ducted Heat Transfer Controller Part 1 (August 2025)

Purchase a printed copy of this issue for $13.00.

SILICON SILIC CHIP www.siliconchip.com.au Publisher/Editor Nicholas Vinen Technical Editor John Clarke – B.E.(Elec.) Technical Staff Bao Smith – B.Sc. Tim Blythman – B.E., B.Sc. Advertising Enquiries (02) 9939 3295 adverts<at>siliconchip.com.au Regular Contributors Allan Linton-Smith Dave Thompson David Maddison – B.App.Sc. (Hons 1), PhD, Grad.Dip.Entr.Innov. Geoff Graham Associate Professor Graham Parslow Dr Hugo Holden – B.H.B, MB.ChB., FRANZCO Ian Batty – M.Ed. Phil Prosser – B.Sc., B.E.(Elec.) Cartoonist Louis Decrevel loueee.com Founding Editor (retired) Leo Simpson – B.Bus., FAICD 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) 6 issues (6 months): $70 12 issues (1 year): $130 24 issues (2 years): $245 Online subscription (Worldwide) 6 issues (6 months): $52.50 12 issues (1 year): $100 24 issues (2 years): $190 For overseas rates, see our website or email silicon<at>siliconchip.com.au * recommended & maximum price only Postal address: PO Box 194, Matraville, NSW 2036. Phone: (02) 9939 3295. ISSN: 1030-2662 Editorial Viewpoint Supplier price increases I had hoped we could avoid raising the magazine’s cover price or subscription rates this year. Unfortunately, several factors beyond our control mean we must do so to continue producing a magazine with the same level of quality and content. The new prices (listed below) will take effect from the next issue, or for subscribers, on renewals from the 1st of September. If you’d like to lock in the current, lower rates, you can extend your subscription now and save a few dollars. While I dislike price increases as much as anyone else, if you compare the price-to-content ratio of Silicon Chip to other magazines, I think it’s still a good deal. Over the past couple of years, we’ve worked hard to reduce our business operating costs to avoid price rises. However, those savings have been more than wiped out by increased supplier costs. That left us with a decision: reduce the amount of content in each issue, or raise prices to maintain it. I believe most readers would prefer the latter, so that’s the path we’ve chosen. The costs of both printing and postage have increased substantially this year. I negotiated a favourable printing deal at the end of last year that I hoped would last for at least 12 months. However, I have recently been told it is no longer available. As a result, our printing costs increased by 27% virtually overnight. It looks like there may soon be less competition in the magazine printing industry in Australia. Of course, less competition and less choice means higher prices. Australia Post is also increasing prices again. In January 2020, you could mail a regular letter for $1.00. By the time you’re reading this, they will be charging $1.70. You don’t need to be a mathematical wizard to calculate that’s a 70% increase in around five years – way above the rate of inflation. As a comparison, the change in the Silicon Chip cover price since 2013 (from $9.95 to $14.00) fairly well matches the rate of inflation over those years. Also, companies are reducing the amount they are spending on sponsorships and advertising. One advertiser pulled out after being hit by the ridiculous US tariff situation. Others are simply tightening their marketing budgets for various reasons. When advertising revenue drops, the only practical way to make up the shortfall is by charging more for the magazine. I’m hopeful that our recent cost-cutting measures, such as relocating from the large Brookvale office to more affordable premises, will help limit further price increases in future. But, in the end, we’re still at the mercy of our suppliers. I want to keep this magazine going for many years to come, and that means it has to remain financially viable – without reducing quality. So, from the September 2025 issue onwards, the cover price of the print edition will be AU$14.00 or NZ$14.90; the online issues will not increase (see prices in the masthead). The subscription prices will change as shown in the table below. by Nicholas Vinen Subscription Prices, effective 01/09/2025 New Prices Print (AU) Printing and Distribution: 24-26 Lilian Fowler Pl, Marrickville 2204 2 Silicon Chip Combined (AU) Print (NZ) Combined (NZ) RoW 6-month $72.50 $82.50 $85 $95 $105 12-month $135 $155 $160 $180 $200 24-month $255 $280 $300 $335 $390 Australia's electronics magazine siliconchip.com.au