Circuit Cellar Ink 184
November 2005

Table of Contents


Jennifer Huber

HTML Task Manager

Game On


John Gorsky

New Product News

  • MOS Series of serial displays from Matrix Oribtal
  • 8B50/51 analog voltage input modules from Dataforth Corp.
  • WebRelay relay with web server from Xytronix Research & Design, Inc.
  • AS1120 46-segment LCD driver from austriamicrosystems AG
  • BX24-P industrial BASIC microcontroller from NetMedia, Inc.
  • Beagle USB protocol analyzer from Total Phase, Inc.
  • SIO-104+8.485 eight-port PC/104 RS-485 module from Sealevel Systems, Inc.
  • PCM-SC520 PC/104 SBC with Ethernet from WinSystems, Inc.


Peter Gibbs

Large-Scale Electronic Display

Although Peter's large BASIC Stamp 2-based electronic display is intended for use in sporting venues, you can add the same sort of electronic display technology to projects of your own. Read on to learn how he designed and coded the basic circuitry.



Mitchell Levinn

Water Pressure Sensor

ZigBee-Based NozzleMon Aids Firefighters

Delivering water through a fire hose is harder than it looks. NozzleMon, a ZigBee-based water pressure sensor, enables pump operators to safely deliver water at appropriate pressures.



Michael R. Smith
James Miller

Automatic Microcontroller Task Scheduling

Do you have a powerful processor that can issue numerous instructions in parallel? Are you having problems coding to get the maximum throughput? Mike and James explain how to use Microsoft Project as a nanosecond-scheduling tool for microprocessors.



Danny Chow
Anthony Tay

Virtual Billiards

What do you get when two young engineers combine their design skills with their love of billiards? A mobile virtual pool machine. The exciting system features an ATmega32 microcontroller and a Seiko G321D LCD.



Chris Cantrell

Debugging Commercial Code

A Quick Fix for Galaga Code

Have you ever played Galaga? Chris points out a bug in the game's code and offers a fix.


Applied PCs


Fred Eady

Implement a 32-Bit ARM Solution

Upgrading an application with a 32-bit MCU doesn't have to be difficult. Fred upgrades a wireless system with an Atmel AT91SAM7S MCU and a Telegesis ETRX1 ZigBee module.



Tom Napier

Measure Low-Level Radioactivity

Build a Sensitive Radiation Counter

Tom built a sensitive radiation counter from a Geiger-Muller (GM) tube and a PIC16C54 microcontroller. Testing radiation levels has never been easier.



Kris Ardis

Multifunctional Bicycle Computer

An avid cyclist who dreams of winning the Tour de France, Kris built a compact bicycle computer to help him through his workouts. The MAXQ2000-based system includes a speedometer, clock, thermometer, humidity sensor, heart rate monitor, and stopwatch.



Colin O'Flynn

Digital Video in an Embedded System

Working with digital video doesn't have to be a complicated process, especially if you heed Colin's advice. In this article he explains the practice of using low-cost video encoders and decoders to generate studio-quality video.


From the Bench


Jeff Bachiochi

Infrared Distance Measurement

Infrared distance sensors have numerous uses. They enable digital cameras to focus in on distant objects. Mobile robots use them to avoid obstacles. This month Jeff explains how he used a small microcontroller to convert analog output from an infrared distance sensor into audio feedback.


Silicon Update


Tom Cantrell

Wi-PHY Chip

Your embedded Ethernet dreams will become reality with Freescale's MC9S12NE64 chip. Single-chip Ethernet connectivity is literally at your fingertips.


Crossword Puzzle


Advertiser's Index / December Preview


Steve Ciarcia

HTML Priority Interrupt

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