Silicon ChipContents - July 2014 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Argo drones gathering deep sea data
  4. Feature: Argo: Drones Of The Deep Oceans by Dr. David Maddison
  5. Review: AmScope Stereo Microscope by Andrew Levido
  6. Project: Threshold Voltage Switch by John Clarke
  7. Feature: Eye-Fi Mobi SD Wireless Camera Cards by Ross Tester
  8. Subscriptions
  9. Product Showcase
  10. Salvage It! Wrecking The Computer Itself by Bruce Pierson
  11. Project: Micromite, Pt.3: Build An ASCII Video Display Terminal by Geoff Graham
  12. Project: Touch-Screen Digital Audio Recorder, Pt.2 by Andrew Levido
  13. Project: L-o-o-o-n-g Gating Times For The 12-Digit Counter by Jim Rowe
  14. Order Form
  15. Vintage Radio: The upmarket 1950 HMV R53A radiogram by Rodney Champness
  16. Market Centre
  17. Notes & Errata
  18. Advertising Index
  19. Outer Back Cover

This is only a preview of the July 2014 issue of Silicon Chip.

You can view 38 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 "Threshold Voltage Switch":
  • Threshold Voltage Switch PCB [99106141] (AUD $10.00)
  • Threshold Voltage Switch PCB pattern (PDF download) [99106141] (Free)
Items relevant to "Micromite, Pt.3: Build An ASCII Video Display Terminal":
  • PIC32MX170F256B-50I/SP programmed for the Micromite Mk2 plus capacitor (Programmed Microcontroller, AUD $15.00)
  • PIC32MX170F256D-50I/PT programmed for the Micromite Mk2 (44-pin) (Programmed Microcontroller, AUD $15.00)
  • CP2102-based USB/TTL serial converter with 5-pin header and 30cm jumper cable (Component, AUD $5.00)
  • Firmware (HEX) file and user manual for the Micromite (Software, Free)
  • Firmware (HEX) file and user manual for the 44-pin Micromite (Software, Free)
  • 44-pin Micromite PCB pattern (PDF download) [24108141] (Free)
  • 44-pin Micromite PCB [24108141] (AUD $5.00)
  • ASCII Video Terminal PCB [24107141] (AUD $5.00)
  • PIC32MX270F256B-I/SP programmed for the ASCII Video Terminal [2410714A.HEX] (Programmed Microcontroller, AUD $15.00)
  • MCP1700 3.3V LDO (TO-92) (Component, AUD $2.00)
  • Firmware (HEX) file for the ASCII Video Terminal [2410714B] (Software, Free)
  • ASCII Video Terminal PCB pattern (PDF download) [24107141] (Free)
Articles in this series:
  • The Micromite: An Easily Programmed Microcontroller, Pt.1 (May 2014)
  • The Micromite: An Easily Programmed Microcontroller, Pt.2 (June 2014)
  • Micromite, Pt.3: Build An ASCII Video Display Terminal (July 2014)
  • The 44-pin Micromite Module (August 2014)
Items relevant to "Touch-Screen Digital Audio Recorder, Pt.2":
  • Touch-screen Audio Recorder PCB [01105141] (AUD $12.50)
  • PIC32MX695F512H-80I/PT programmed for the Touchscreen Digital Audio Recorder (Programmed Microcontroller, AUD $30.00)
  • Firmware for the Touchscreen Audio Recorder [0110514B.HEX] (Software, Free)
  • Touch-screen Audio Recorder PCB pattern (PDF download) [01105141] (Free)
  • Touch-screen Audio Recorder end panel artwork (PDF download) (Free)
Articles in this series:
  • Touch-Screen Digital Audio Recorder, Pt.1 (June 2014)
  • Touch-Screen Digital Audio Recorder, Pt.2 (July 2014)
Items relevant to "L-o-o-o-n-g Gating Times For The 12-Digit Counter":
  • 2.5GHz 12-Digit Frequency Counter Main PCB [04111121] (AUD $20.00)
  • 2.5GHz 12-Digit Frequency Counter Display PCB [04111122] (AUD $12.50)
  • 2.5GHz 12-Digit Frequency Counter Add-on PCB [04106141a/b] (AUD $12.50)
  • PIC16F877A-I/P programmed for the 2.5GHz 12-Digit Frequency Counter [0411112C.HEX] (Programmed Microcontroller, AUD $20.00)
  • VK2828U7G5LF TTL GPS/GLONASS/GALILEO module with antenna and cable (Component, AUD $25.00)
  • 2.5GHz 12-Digit Frequency Counter front panel [04111123] (PCB, AUD $25.00)
  • Firmware for the 2.5GHz 12-Digit Frequency Counter project [0411112C.HEX] (Software, Free)
  • 2.5GHz 12-Digit Frequency Counter Main PCB pattern (PDF download) [04111121] (Free)
  • 2.5GHz 12-Digit Frequency Counter Display PCB pattern (PDF download) [04111122] (Free)
  • Long Gating Time Add-on Module for the 2.5GHz 12-Digit Frequency Counter PCB pattern (PDF download) [04106141a/b] (Free)
  • 2.5GHz 12-Digit Frequency Counter front and rear panel artwork (PDF download) [04111123] (Free)
Articles in this series:
  • A 2.5GHz 12-digit Frequency Counter, Pt.1 (December 2012)
  • A 2.5GHz 12-Digit Frequency Counter, Pt.2 (January 2013)
  • L-o-o-o-n-g Gating Times For The 12-Digit Counter (July 2014)

Purchase a printed copy of this issue for $10.00.

Contents Vol.27, No.7; July 2014 SILICON CHIP www.siliconchip.com.au Features   14  Argo: Drones Of The Deep Oceans Thousands of drones are floating deep in the oceans of the world, monitoring temperatures and other data. They are fully autonomous and can change depth or rise to the surface to send data to satellites – by Dr David Maddison Threshold Voltage Switch – Page 26.   22  Review: AmScope Stereo Microscope Even people with 20/20 eyesight have difficulty soldering fine-pitch SMDs to PCBs. This stereo microscope is made for the task and it even has a camera eyepiece to record your work – by Andrew Levido   36  Eye-Fi Mobi SD Wireless Camera Cards Eye-Fi have gone mobile with their new range of “Mobi” camera SD cards. Now you can very easily send your pictures to any Android or iOS tablet or phone and share them with friends! – by Ross Tester Pro jects To Build   26  Threshold Voltage Switch This versatile unit switches a relay when an input voltage crosses a preset threshold. Use it to switch power to a fan, warning light or similar or use it to prevent a lead-acid battery from being over-charged – by John Clarke ASCII Video Terminal With VGA, Composite Video, USB Port & PS/2 Keyboard Input – Page 60.   60  Micromite, Pt.3: Build An ASCII Video Display Terminal It’s VT100-compatible and lets you add a video display, keyboard and USB to your next microcontroller project. It’s the perfect companion for microcontrollers with serial input/output such as the Micromite and PICAXE– by Geoff Graham   70  Touch-Screen Digital Audio Recorder, Pt.2 Second article gives the assembly details, provides some performance graphs and describes how it’s used – by Andrew Levido   80  L-o-o-o-n-g Gating Times For The 12-Digit Counter This module enables even higher resolution measurements with our 12-Digit Frequency/Period Counter. It adds a decade divider for the external timebase input to allow measurements using a gating time of 10,000s – by Jim Rowe Special Columns   40  Serviceman’s Log Oh goodie, a valve radio to fix – by Dave Thompson   57  Salvage It! Wrecking The Computer Itself Building The Touch-Screen Digital Audio Recorder – Page 70. Once you’ve pulled the main stuff out of your old PC, what do you do with the rest? Don’t bin it yet: there’s still lots of goodies waiting to be recycled – by Bruce Pierson  87 Circuit Notebook (1) Signal Injector & Tracer Uses TDA2822M Dual Power Amplifier; (2) Headlight Circuit For A 36V Electric Bike; (3) RS-232 Input For Non-Standard Signals; (4) Simple DIY Gizmos For SMD Desoldering   92  Vintage Radio The upmarket 1950 HMV R53A radiogram – by Rodney Champness Departments   2  Publisher’s Letter   4 Mailbag siliconchip.com.au  47 Subscriptions   48  Product Showcase   90  Online Shop  98 Ask Silicon Chip 103 Market Centre 104  Notes & Errata Long Gating Times For The 12-Digit High-Resolution Counter – Page 80. July 2014  1