Circuit Cellar Ink 155
June 2003

Table of Contents


Jennifer Huber

HTML Task Manager

Change is Good


John Gorsky

New Product News

  • TMP05 and TMP06 low-power temperature sensors from Analog Devices, Inc.
  • MC33993 protected I/O expansion chip from Motorola, Inc.
  • GP2Y0D340K compact distance measuring sensor from Sharp Corp.


David Tweed

HTML Test Your EQ


Victor Kremin

Remote Health-Monitoring System

The uses for Victor's award-winning health-monitoring system are endless. Rehabilitation technicians, athletic trainers, and emergency-response crews would all benefit from having his portable monitoring system on-site. In this article, Victor describes what he was shooting for when he started the design and explains how he built the system.


Robotics Corner


Christopher Dix

The Altmotor

Most robotics projects require powerful, high-torque motors. Understanding the need for such a motor but unwilling to spend the cash on one, Chris built his own variable-speed motor. If you think it was a complicated project, think again. All it took was a little imagination and the alternator in his wife's van.



Jennifer Huber

HTML Mad Dash for Flash Cash

Winners' Announcement

The winners have crossed the finish line in the Mad Dash for Flash Cash. Contestants were challenged to base their designs on the PIC family of microcontrollers from Microchip. The entrants' ingenuity and superior design skills made it a tight race. The results demonstrate why the PIC family is so popular: the versatility and reliability of the PIC12Fxxx, PIC16Fxxx, and PIC18Fxxx have made them effective tools for building dependable embedded applications.
  • Grand Prize: Stealth Telephone Screener, Richard Wotiz, U.S.
  • First Prize: A USB-CAN-based Distributed Dual-Axis Motion Controller, Craig Beiferman and Dale Herman, U.S.
  • Second Prize: Horsepower Monitor, Thomas Dvorak, U.S.
  • Third Prize: Chimney Sentinel, Spehro Pefhany, Canada
  • Honorable Mention: XY-Plotter, Robert Lacoste, France
  • Honorable Mention: Zero Pin Loader (ZPL) for the PIC18F Family, Wouter van Ooijen, Netherlands
  • Honorable Mention: AS7010-STMeter, Nick Forbes and Junior Powell, U.K.
  • Honorable Mention: Mechanically Scanned Laser Display, Benone Radu, Romania
  • Honorable Mention: Seeker II -- An Autonomous Mini-Sumo Robot, Jon Hylands, Canada


Mikhail Galeev

Construct a Hand-Held Radiation Monitor

If you're a safety-conscious homeowner, then you've probably equipped your house with safety devices like smoke detectors and burglar alarms. But shouldn't you also protect yourself from radiation? If you're interested in doing so but don't want to spend a fortune on a machine, then you can follow Mikhail's instructions and build your own.



Peter Hiscocks
James Gaston

Build a Graphical User Interface with TcI/Tk

So, you want to build a graphical user interface but can't speak a lick of the Tcl/Tk language. What to do? The answer is simple: read on, and let Peter and James teach you everything you need to know to build the perfect GUI.

Download: hiscocks &


Ed Nisley

Above the Ground Plane

Battery Power, Feeding the Z3801A

After purchasing a Z3801A GPS receiver, Ed decided that he wanted to play a more proactive role in controlling the device's diet. To do so, he set out to design the perfect battery charger. He ended up with an effective compact power trough for his receiver.



George Novacek

Time-Triggered Technology

Clearly, the older communications protocols used by the aerospace industry are becoming increasingly expensive to implement. But, as George explains, change is on the horizon in the form of TTP technology, which may soon become the inexpensive solution for your future applications.

Embedded PC


Fred Eady

HTML Applied PCs

E-Field Evaluation Module

Despite the references to force fields and spaceships, you'll soon learn that building a Z8-based e-field EVM is neither science fiction nor rocket science. In fact, it's a fairly straightforward, uncomplicated process -- just how Fred likes it.

Download: Eady


Jeff Bachiochi

HTML From the Bench

Encore!, Zilog's Z8 Flash Memory-Based Micro

Zilog's Encore! has Jeff standing and clapping, and for good reason. In addition to bringing flash memory to its Z8 ensemble, Zilog has delivered a great set of peripherals that have Jeff's imagination working overtime.

Download: jeff


Tom Cantrell

HTML Silicon Update

Good Vibrations

What do the Beach Boys, B-movie aliens, and Motorola have in common? They all owe some of their varied successes to the science developed by a KGB bug maker named Leon Theremin. In this column, Tom connects the technological dots by way of an introduction to the MC33794 and e-field technology.


Advertiser's Index / July Preview


Steve Ciarcia

HTML Priority Interrupt

Opening E-mails From HairyAl

FTP Directory for INK 155
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