Circuit Cellar Ink 175
February 2005

Table of Contents

4 Jennifer Huber	HTML Task Manager Go Wireless
8 John Gorsky	New Product News 9XTend-PKG-R 1-Watt RF modem from MaxStream, Inc. R301 Modbus Digital Remote Terminal Unit from R2 Controls RCT-xxx-AS tiny ASK/OOK transmitter module from Radiotronix, Inc.
14	Reader I/O Letters to the Editor
11 David Tweed	HTML Test Your EQ
16 Pete Cross	HTML Zeroing in on ZigBee Part 1: Introduction to the Standard Will the ZigBee standard successfully emerge from the world of technical committees and marketing hype? If so, will it be accessible enough for you to use in simple low-cost projects? In this two-part series of articles, Pete investigates these questions and more.
24 Dick Cappels	Minimum Mass Wireless Coupler Dick's minimum mass wireless coupler allows you to connect the devices on your workbench to a PC. No electrical connections are required. You can use an AT90S2313 or an ATmega8 to control the system. Download: Cappels175.zip
30 Brian Millier	Noncontact Infrared Thermometry Noncontact infrared thermometry has enabled doctors to get rid of mercury thermometers. This technology also allows distributors to monitor the temperature of food products without contaminating them with sensors. Read on to learn how to use it in a project of your own.
2004 AVR Design Contest 40 Bryan Sobczyk Vince Formica William Sebastian Kevin Wertz	HTML Flexible Wireless Telemetry System This group of former University of Akron students built a wireless telemetry system for a racing team that needed a way to obtain real-time data about its car's performance. The result is an affordable system that's perfect for industrial control and data acquisition designs. Download: Sobczyk_et_al175.zip SobczykPresentations175.zip
Above the Ground Plane 46 Ed Nisley	Capacitors at RF Sometimes you have to watch out for the little guys -- you know, the simple capacitors you overlook as you focus all your attention on microcontrollers and sensors. Neglecting the least glamorous parts of a design can come back to haunt you, especially if you're working with high-frequency circuits. It's time for a closer look at capacitors.
Applied PCs 50 Fred Eady	ALFAT-Based Embedded System Storage Need some additional data storage space for one of your designs? ALFAT's for you. It's a single-IC, drop-in FAT solution for embedded system storage. Download: Eady175.zip
From the Bench 60 Jeff Bachiochi	HTML A Look at the M16C Lineup Renesas M16C Design Contest 2005 Members of the Renesas M16C family are packed with features. Read on for a closer look at the R8C/Tiny, M16C/Tiny, M16C/60, and M16C/80. Download: Bachiochi175.zip
68 Elecia White	Open Source Code Guide Writing code from scratch isn't always practical, especially when time isn't on your side. So before you start working on your next project, take a look at Elecia's approach to code collection. Working with free code can cut in half the time you'd otherwise spend on the software end of a project.
74 Henry Jacobs	XTstat A Portable Wireless X10 Thermostat Henry's XTstat wireless thermostat allows you to adjust a room's temperature with a remote control. Inexpensive and easy to assemble, this PIC12F629-based device is a great starting point for wireless temperature control projects. Download: Jacobs175.zip
Silicon Update 80 Tom Cantrell	More Bits, Less Bucks Tom's saying it again: 32-bit ARM-based MCUs are poised to become the 8051s of tomorrow. This means they are quickly becoming a practical option for embedded designs. But the story isn't just about performance; it's also about price. And the price seems right.
94	Advertiser's Index / March Preview
96 Steve Ciarcia	HTML Priority Interrupt Between a Nightmare and a Rip-Off

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