Circuit Cellar Ink 183
October 2005

Table of Contents


Jennifer Huber

HTML Task Manager

Exemplary Designs


John Gorsky

New Product News

  • DS4303 sample-and-infinite-hold voltage reference from Dallas Semiconductor Corp.
  • LINEARSTEP linear-type stepper motor from Nippon Pulse America, Inc.
  • MicroBolt LPC2106-based microcontroller module from Micromint, Inc.
  • LTC6241 and LTC242 CMOS amplifiers from Linear Technology Corp.
  • VR Stamp voice-recognition module from Sensory, Inc.
  • ETX-P3T and ETX-P3Tx Celeron-based CPU modules from Kontron


Stuart Ball

Analog Bar Graph Display

Stuart's LCDMeter is an affordable alternative to high-resolution analog displays. The key is to use a character-based LCD to display analog values. Read on to learn how it's done.



Alberto Ricci Bitti

The Silicon Wallet

CY8C27443-Based Data Manager

Always forgetting passwords? Try Alberto's PSoC-based Silicon Wallet. The portable system enables you to keep track of all your old passwords and input new ones wirelessly.



Shlomo Engelberg
Yair Marom
Roi Mauda

Digital Watermarking

Digital watermarking is a method of marking files for the purposes of authentication and security. Shlomo, Yair, and Roi used their knowledge of digital watermarking to develop a system that enables police departments to check if audio file recordings have been tampered with.


Above the Ground Plane


Ed Nisley

LED Optics

Lights! Diodes! Current! Math!

Do you ignore the LEDs in your circuits? Perhaps it's time you took them a little more seriously. In this column, Ed shines some light on LED technology. He covers everything from light patterns to the terms you'll find in LED datasheets.


Richard Hoptroff


A ToothPIC-Based Terminal Emulator

Richard's ToothPIC-based terminal emulator is an alternative to HyperTerminal. HappyTerminal is easier to set up than the RS-232 signal levels required by HyperTerminal.



Huifang Ni
Jingxi Zhang
Yang Zhang

Send and Receive VoIP

Last July, Huifang, Jingxi, and Yang showed you how to build an eZ80F91-based VoIP system for transmitting phone calls over the Internet. In this article they cover voice data compression, packetization, transmission, and reception processes.



Brian Millier

Maxed-Out PGA

Brian shows you how he built his evaluation board and shares code routines that you can implement with an AVR microcontroller to configure an Analog Devices's AD8555.



Bruce D. Lightner

AVR-Based Fuel Consumption Gauge

With gas prices at record highs, wouldn't it be useful to be able to monitor your vehicle's fuel consumption rate in real time? Bruce's fuel consumption gauge is the answer.


Silicon Update


Tom Cantrell

Direction Finder

Before dropping big bucks on a GPS module for a new design, consider the potential of Hitachi's inexpensive HM55B digital magnetometer chip. With a little steering from Tom, you can easily add direction-finding capability to virtually any design.

Applied PCs


Fred Eady

Transporting Sensor Data

In-Depth Look at the CY3635 WirelessUSB Kit

You can now transport sensor data using wireless USB. All you need is a CY3635 WirelessUSB kit and little guidance from Fred.


From the Bench


Jeff Bachiochi

Understanding Semiconductors

This month Jeff looks at the development of semiconductor electronics. He begins by discussing the essential building block of semiconductor technology: the PN junction.


Crossword Puzzle


Advertiser's Index / November Preview


Steve Ciarcia

HTML Priority Interrupt

11-lb. Bricks

FTP Directory for INK 183
Follow this link to order a copy of INK 183

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