Circuit Cellar Ink 211
February 2008

Table of Contents


CJ Abate

HTML Task Manager

Real-World Apps


John Gorsky

New Product News

  • MAX IIZ low-power CPLD from Altera Corp.
  • 7I43 low-cost, FPGA-based programmable I/O card from Mesa Electronics
  • Hammer Linux-based SBC in 40-pin DIP from Tin Can Tools
  • XtremeDSP Solutions Starter Platform--Spartan-3A DSP 1800A FPGA Edition from Xilinx, Inc.


Diego Mendez Chaves
Mauricio Guerrero Hurtado
Nestor Pena Traslavina

Wireless Sensor Network Design

A Flexible Platform for WSNs

A group of designers from Los Andes University presents a wireless sensor network (WSN) platform. It is a testbed for the evaluation of different algorithms related to the communications stack of a network (e.g., routing policies, transport protocols, topology control, and medium access control).



Steve Ciarcia

Solar-Powering the Circuit Cellar

Part 3: Wiring & Electronics

Installing a major renewable energy source like Steve's home photovoltaic system is no small feat. It requires intelligent planning, technical know-how, and the ability to think outside the box. This month, he describes the last leg of this long technical adventure: wiring and electronics.


Carlos Cossio

RFID Payment Terminal

Carlos's LM3S811-based handheld terminal makes contactless payments a reality. The terminal's LCD -- which shows the date and time -- prompts you to enter payment amounts on the keypad. After transactions are complete, the log file stored on the device's flash memory can be sent to a host system through an RS-232 interface.



Richard Hoptroff

Cash for Code

Part 2: Publish Your Firmware

Richard concludes his series about firmware. In this article, he examines issues such as copy protection, pricing, and firmware publishing. Firmware-related business opportunities are out there. It's time to cash in.


Cass Tyler

System Control

TCP/IP Communication with Embedded Processors

TCP/IP communication with embedded processors, using text commands, is fast and reliable. Best of all, it doesn't strain a host PC's resources. Cass describes how to implement a TCP/IP socket server on a Rabbit Semiconductor RCM2200 microprocessor.


The Darker Side


Robert Lacoste

Antenna Basics

Robert recently moved out of his comfort zone and stepped into the world of antenna technology. In this article, he describes the experience and covers the topics of impedance matching, antenna simulation, and more.


Above the Ground Plane


Ed Nisley


Are you looking to try spot welding or resistance soldering? Ed has you covered with a look at transformer basics. He examines some of the fundamental equations governing transformers and measures the properties of a real transformer.

From the Bench


Jeff Bachiochi

Portable Poll Server

Part 2: Data Acquisition & Results

Jeff finishes describing the design of a portable poll server. SitePlayer and a small micro provide Internet access to a poll's questions and the results.


Silicon Update


Tom Cantrell

Got Chips?

Tom's been on the road again, this time heading coast-to-coast from Hot Chips 19 at Stanford University to the Embedded Systems Conference in Boston. See where silicon is and where it's headed as he takes a whirlwind tour of today's and tomorrow's chips.


Crossword Puzzle


Advertiser's Index / March Preview


Steve Ciarcia

HTML Priority Interrupt

Avoiding Stereotypes

FTP Directory for INK 211
Follow this link to order a copy of INK 211

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