Circuit Cellar Ink 151
February 2003

Table of Contents


Jennifer Huber

HTML Task Manager

Triumph Over New Year's Resolution


John Gorsky

New Product News

  • TRF6901 low-cost FSK/OOK transceiver from Texas Instruments, Inc.
  • VERSA 1000 (VRS1000-40) low-cost 8051-based microcontroller from GOAL Semiconductors, Inc.
  • EVBplus9S12DP256 development board for Motorola HCS12 from
  • Blue Robot Base from Rogue Robotics
  • PIC16F630, PIC16F676 14-pin flash microcontrollers from Microchip Technology, Inc.
  • LCD-S401M14TF miniature four-digit LCD from Lumex, Inc.


David Tweed

HTML Test Your EQ


Jan van de Kamer

USB Parallel Port

With each passing generation of PC and OS technology, it's becoming harder for you to connect your home-built hardware to your computer. However, with Jan's USB-to-standard parallel port adapter, you will have no problem connecting your own hardware.

Download: van de kamer 151.ZIP


Praveen P. Deshpande
Prajakta Deshpande
Viraj Bhanage

MCS-51 SBC for the Classroom

Part 1: Hardware

College students tend to experience a lot of problems when working with development systems that use PLDs and ASICs. So, at the behest of a local college professor, Praveen and his colleagues developed an inexpensive 8051-based SBC that's perfect for the classroom.

Download: deshpande151.ZIP


Ma Chao
Lin Ming

HTML GPS-GSM Mobile Navigator

What's the more laudable engineering feat, designing a navigation system capable of tracking ships in Shanghai Port or placing at the top of a competitive design contest? With the award-winning GPS-GSM Mobile Navigator, Ma and Lin accomplished both.

Download: chao & ming 151.ZIP


Ken Macleish

A Wireless Indoor/Outdoor Humidity Meter

Fascinated by weather instrumentation, Ken recently built an indoor/outdoor humidity meter with several basic components and a few PIC micros. In this article, he describes how to build the separate indoor and outdoor units and how to make them aesthetically pleasing.

Download: macleish 151.ZIP

Robotics Corner


Daniel Herrington

Easy Image Processing

Camera Interfacing for Robotics

Since childhood, Daniel has incorporated high-tech toys in his robotics projects. Thus, it's no surprise that he used a Game Boy Camera in one of his recent designs. Now, he'll show you how to use the camera to enhance the navigation system on your own mobile robot.

Download: herrinton 151.ZIP

Embedded PC


Fred Eady

Applied PCs

A P89C668 Development Board for 8051 Fans

Despite their geographical and occupational differences, most of Fred's readers have one thing in common: their love of the 8051. This month, Fred assuages their appetite for 8051-related projects with a simple 80C51-compatible P89C668 development board.

Download: eady 151.ZIP


Ed Nisley

Above the Ground Plane

Nonlinear Mixing

In a number of previous articles, Ed has covered the topic of linear audio mixers. This month, he will address the flip side of the coin, nonlinear mixing. If you're not accustomed to working with nonlinear mixers, this article is the perfect place to begin.


Jeff Bachiochi

HTML From the Bench

Newcomer Nitron, Motorola's Leading 8/16-Pin MCUs

Motorola's 2003 design contest is upon us, so now's the time to get familiar with the Nitron family. This month, Jeff introduces us to the flashy technology that will soon permeate the low-end markets.


D. Prabakaran

Short Solutions

Simple EL-Lamp Driver

In this complicated world, quick solutions can be lifesavers. D. Prabakaran recently designed a straightforward EL-lamp driver that includes an HV826 integrated circuit. With it, he can enhance backlighting applications ranging from laptop displays to keypad lighting.


Tom Cantrell

HTML Silicon Update

Working the 'Net

Shouldn't every engineer know a little more about the process of network-enabling his or her widget? Tom definitely thinks so. With Tom on your side, you'll be working the 'Net to your advantage in no time.


Advertiser's Index / March Preview


Steve Ciarcia

HTML Priority Interrupt

Real People

FTP Directory for INK 151
Follow this link to order a copy of INK 151

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