Silicon ChipSubscriptions - April 2025 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Ferrite beads are not inductors
  4. Feature: 3D-MID and IMSE by Dr David Maddison
  5. Project: Discrete 555 timer by Tim Blythman
  6. Project: The Pico 2 Computer by Geoff Graham & Peter Mather
  7. Feature: The Power Grid’s Future, Part 2 by Brandon Speedie
  8. Project: Weather monitor by Tim Blythman
  9. Feature: Antenna Analysis, Part 3 by Roderick Wall, VK3YC
  10. Subscriptions
  11. Project: Rotating Light for Models by Nicholas Vinen
  12. PartShop
  13. Feature: Precision Electronics, Part 6 by Andrew Levido
  14. PartShop
  15. Project: 433MHz Transmitter Module by Tim Blythman
  16. Project: Power LCR Meter, Part 2 by Phil Prosser
  17. Serviceman's Log: The camera eye by Dave Thompson
  18. Vintage Radio: Astor APK superhet by Jim Greig
  19. Market Centre
  20. Advertising Index
  21. Notes & Errata: Universal Loudspeaker Protector, November 2015
  22. Outer Back Cover

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

You can view 45 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.

Items relevant to "Discrete 555 timer":
  • LTSpice files for JMP024 (Discrete 555 timer) (Software, Free)
Articles in this series:
  • Symbol USB Keyboard (May 2024)
  • Thermal Fan Controller (May 2024)
  • Wired Infrared Remote Extender (May 2024)
  • Self Toggling Relay (June 2024)
  • Arduino Clap Light (June 2024)
  • Digital Compass (July 2024)
  • Lava Lamp Display (July 2024)
  • JMP007 - Ultrasonic Garage Door Notifier (August 2024)
  • JMP009 - Stroboscope and Tachometer (August 2024)
  • No-IC Colour Shifter (September 2024)
  • IR Helper (September 2024)
  • JMP015 - Analog Servo Gauge (October 2024)
  • JMP012 - WiFi Relay Remote Control (October 2024)
  • JMP013 - Digital spirit level (November 2024)
  • JMP014 - Analog pace clock & stopwatch (November 2024)
  • WiFi weather logger (December 2024)
  • Automatic night light (December 2024)
  • BIG LED clock (January 2025)
  • Gesture-controlled USB lamp (January 2025)
  • Wireless flashing LEDs (February 2025)
  • Transistor tester (February 2025)
  • RF Remote Receiver (March 2025)
  • Continuity Tester (March 2025)
  • Discrete 555 timer (April 2025)
  • Weather monitor (April 2025)
Items relevant to "The Pico 2 Computer":
  • Pico 2 Computer PCB [07104251] (AUD $5.00)
  • Pico 2 Computer kit (Component, AUD $120.00)
  • Pico 2 Computer front & rear panels (07104252-3) (PCB, AUD $10.00)
  • PicoMite 2 firmware (Software, Free)
  • Pico 2 Computer PCB pattern (PDF download) [07104251] (Free)
  • Pico 2 Computer PCB assembly files (PCB Pattern, Free)
  • Pico 2 Computer panel artwork and cutting diagrams (Free)
Articles in this series:
  • The Power Grid’s Future, Part 1 (March 2025)
  • The Power Grid’s Future, Part 2 (April 2025)
Items relevant to "Weather monitor":
  • Software for JMP025 (Weather Monitor) (Free)
Articles in this series:
  • Symbol USB Keyboard (May 2024)
  • Thermal Fan Controller (May 2024)
  • Wired Infrared Remote Extender (May 2024)
  • Self Toggling Relay (June 2024)
  • Arduino Clap Light (June 2024)
  • Digital Compass (July 2024)
  • Lava Lamp Display (July 2024)
  • JMP007 - Ultrasonic Garage Door Notifier (August 2024)
  • JMP009 - Stroboscope and Tachometer (August 2024)
  • No-IC Colour Shifter (September 2024)
  • IR Helper (September 2024)
  • JMP015 - Analog Servo Gauge (October 2024)
  • JMP012 - WiFi Relay Remote Control (October 2024)
  • JMP013 - Digital spirit level (November 2024)
  • JMP014 - Analog pace clock & stopwatch (November 2024)
  • WiFi weather logger (December 2024)
  • Automatic night light (December 2024)
  • BIG LED clock (January 2025)
  • Gesture-controlled USB lamp (January 2025)
  • Wireless flashing LEDs (February 2025)
  • Transistor tester (February 2025)
  • RF Remote Receiver (March 2025)
  • Continuity Tester (March 2025)
  • Discrete 555 timer (April 2025)
  • Weather monitor (April 2025)
Articles in this series:
  • Antenna Analysis, Part 1 (February 2025)
  • Antenna Analysis, Part 2 (March 2025)
  • Antenna Analysis, Part 3 (April 2025)
Items relevant to "Rotating Light for Models":
  • Rotating Light for Models PCB [09101251] (AUD $2.50)
  • PIC16F15224-I/SL programmed for the Rotating Light for Models [0910125A.HEX] (Programmed Microcontroller, AUD $10.00)
  • Rotating Light kit (SMD LED version) (Component, AUD $20.00)
  • Rotating Light kit (TH LED version) (Component, AUD $20.00)
  • Software for the Rotating Light for Models [0910125A.HEX] (Free)
  • Rotating Light for Models PCB pattern (PDF download) [09101251] (Free)
Articles in this series:
  • Precision Electronics, Part 1 (November 2024)
  • Precision Electronics, Part 2 (December 2024)
  • Precision Electronics, part one (January 2025)
  • Precision Electronics, Part 3 (January 2025)
  • Precision Electronics, part two (February 2025)
  • Precision Electronics, Part 4 (February 2025)
  • Precision Electronics, Part 5 (March 2025)
  • Precision Electronics, part three (March 2025)
  • Precision Electronics, part four (April 2025)
  • Precision Electronics, Part 6 (April 2025)
  • Precision Electronics, Part 7: ADCs (May 2025)
  • Precision Electronics, part five (May 2025)
  • Precision Electronics, part six (June 2025)
Items relevant to "433MHz Transmitter Module":
  • 433MHz Transmitter Module kit (Component, AUD $20.00)
  • 433MHz Transmitter Module PCB pattern (PDF download) [15103251] (Free)
Items relevant to "Power LCR Meter, Part 2":
  • Power LCR Meter PCB [04103251] (AUD $10.00)
  • PIC32MK0128MCA048 programmed for the Power LCR Meter [0410325A.HEX] (Programmed Microcontroller, AUD $20.00)
  • Software & STL files for the Power LCR Tester (Free)
  • Power LCR Meter PCB pattern (PDF download) [04103251] (Free)
  • Power LCR Meter panel artwork and drilling diagrams (Free)
Articles in this series:
  • Power LCR Tester, Part 1 (March 2025)
  • Power LCR Meter, Part 2 (April 2025)

Purchase a printed copy of this issue for $13.00.

Subscribe to MARCH 2025 ISSN 1030-2662 03 The VERY BEST DIY Projects ! Artificial Limbs 9 771030 266001 $13 00* NZ $13 90 INC GST INC GST Modern prosthetics serve as replacements for lost limbs Power LCR Tester Measures inductance from 50μH to 1H at up to 30A to determine the saturat ion point, capacitance from 50nF to 1F and resistan ce from 1mΩ to 300Ω Waveform Generator Handy for audio equpme nt analysis, circuit development/demos and as a pulse source The Future of the Grid What will our energy grid be powered by in the future? What benefits & downsides do the current types of energy generation have? RPi Pico 2 Audio Analyse Including a built-in signal Australia’s top electronics magazine Silicon Chip is one of the best DIY electronics magazines in the world. Each month is filled with a variety of projects that you can build yourself, along with features on a wide range of topics from in-depth electronics articles to general tech overviews. r generator, oscilloscope and spectrum display in a handheld format ...and much more in this issue! Published in Silicon Chip If you have an active subscription you receive 10% OFF orders from our Online Shop (siliconchip.com.au/Shop/)* Rest of World New Zealand Australia * does not include the cost of postage Length Print Combined Online 6 months $70 $80 $52.50 1 year $130 $150 $100 2 years $245 $280 $190 6 months $82.50 $92.50 1 year $155 $175 2 years $290 $325 6 months $100 $110 1 year $195 $215 All prices are in Australian dollars (AUD). Combined subscriptions include both the printed magazine and online access. 2 years $380 $415 Prices are valid for month of issue. Try our Online Subscription – now with PDF downloads! The Future of the Grid; March 2025 High-Bandwidth Differential Probe; February 2025 Waveform Generator; March 2025 An online issue is perfect for those who don’t want too much clutter around the house and is the same price worldwide. Issues can be viewed online, or downloaded as a PDF. To start your subscription go to siliconchip.com.au/Shop/Subscribe