Circuit Cellar Ink 142
May 2002

Table of Contents


Jennifer Huber

Task Manager

Getting the Right Signal


John Gorsky

New Product News

  • TC51 8051-family SBC from IndustroLogic
  • STSSR-M stackable RS-232 to relay module from Weeder Technologies
  • TRS1722, TRS1755, and TRS1766 reflective color sensors from Texas Advanced Optoelectronic Solutions
  • DS1631 digital thermometer/thermostat from Dallas Semiconductor
  • 386 Engine CPU module with Ethernet and USB from Sumbox
  • G Code Controller machine control software from Ability Systems Corp.


David Tweed

HTML Test Your EQ


Brian Millier

Power Line Modems Meet Home Control

Energy conservation is an important consideration when building a house. But, a poorly designed control system prevented Brian's heat recovery ventilators from being as effective as possible. So, he tried some new power line modems to get the sensing units to talk to each other.



Claudio Lanconelli
Alberto Ricci Bitti

Tiny Planet -- A One-Bit, Wireless I/O Port

Claudio and Alberto took a closer look at the connector on a cell phone and designed a circuit that would allow users to keep in touch with machinery and hardware anywhere in the world. Staying in touch with products can be just as easy as staying in touch with people.

Download: lanconelli & RicciBitti


George Novacek

Working with EMC

Teamwork involves give and take. However, when it comes to EMI, every circuit wants to give, but none of them want to take. George explains some differences between magnetic and electric emissions and how your next project can be designed to handle both.

Robotics Corner


Daniel Ramirez

Behind the Scenes

Part 1: Controlling an Animatronics System

Hollywood is one of the biggest markets for automation systems, but beneath the makeup lies a number of engineering challenges. Daniel takes a shot at a DIY animatronics project that involves a controller board, motors and controllers, sensors, and a host robot.



John Taylor

Hand-Soldering Fine-Pitch QFP Devices

John walks us through the basics of working by hand and explains some techniques that can be used for replacing SMT devices or installing sockets. His practice exercise shows us that most components aren't too compact for hand soldering, at least not yet.



Joseph Jones
Ben Wirz

RoCK Specifications

Part 2: The Circuitry

In the second part of this project, Joe and Ben take the cover off of their prize-winning hardware and show us what makes their robot conversion kit tick. After a closer look, you'll see why the Design Logic 2001 judges selected this project as one of the top submissions.

Embedded PC


Fred Eady

HTML Applied PCs

Taking a Swim with Atmel's STK500

Ready to dive in and take a closer look at a few of the ATmega xxx offerings from Atmel, Fred found no better place to start than with the starter kit. He found that there's plenty of processing power and before long, he was into the deep Atmel-blue realm of embedded.



Jim Turley

HTML Design Your Own Microprocessor

Problem with your microprocessor? Complications with micros are often the case. But, what if you designed your own that did exactly what you needed it to? Jim provides a tutorial on creating a microprocessor. The bonus: You don't have to be Bill Gates to build it.


Jeff Bachiochi

HTML From the Bench

You're Not Alone, Dealing with Isolation

Jeff hasn't turned into a self-help writer, but you can help yourself by following along as he outlines the challenges and effects of isolation. Knowing what the options are will help keep your next project on track.


Tom Cantrell

HTML Silicon Update

I-Way the Hard(ware) Way

Getting on the embedded Internet bandwagon is easy, but putting an actual product on the production line is challenging. i2Chip's latest offering looks promising, but delivery will be everything for this newcomer.


Advertiser's Index / June Preview


Steve Ciarcia

HTML, HTML Priority Interrupt

The Insanity of Success

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