Circuit Cellar Ink 244
November 2010

Table of Contents

4 CJ Abate	HTML Task Manager Radical Empirical Testing
8 John Gorsky	HTML New Product News DC-QFP/PLCC84-J-01 device converter for Xilinx CPLDs from Ironwood Electronics ForeRunner microcontroller modules based on Freescale MC9508 and MCF51 from ATRIA Technologies SDI 2460 series of universal triaxial capacitive accelerometer modules from Silicon Designs, Inc. SN65HVD96 symmetric polarity transceiver from Texas Instruments, Inc.
11 David Tweed	HTML Test Your EQ
12	Texas Instruments DesignStellaris 2010 Design Contest Winners
The Consummate Engineer 16 George Novacek	My Analog World The Significance of Grounding You likely move between the analog and digital "worlds" on a frequent basis. But no matter what sort of project you're working on, always follow professional grounding rules. There is no such thing as "too good a ground."
20 Matt Oppenheim	PVDF Phased-Array Analog Front End Need a board to test algorithms for CDMA signal transmission and processing? You can employ an array of broadband receivers using thin polyvinylidene fluoride (PVDF) sheets as the transducers. Here you learn about the analog electronics required to condition the analog signals for digitization and the subsequent transmission line implementation.
26 Eric Ohmit	MCU-Based Aircraft Data Logging and Telemetry Part 1: Data Logger Development Data acquisition is an essential part of any serious aircraft flight system. This series presents an innovative approach to designing an MCU-based data logging system for a small RC aircraft. The system's hardware is detailed in this article.
38 George Adamidis	Digital Audio Spectrum Analyzer You can embed this digital audio-frequency spectrum analyzer in an audio system or use it as a stand-alone unit. The real-time system computes the distribution of the audio signal energy to 20 specific frequency bands and displays it on a 20 x 20 LED display. Download: Adamidis-244.zip
46 Brian Millier	Sound Generator Build a Sound Machine Around Three Basic Chips As a skilled designer, you can probably build most of the electronics non-engineers have to buy. A sound generator is an example. Here you learn how to build one with a microcontroller, a DAC, and an audio amplifier chip. Download: Millier-244.zip
Lessons from the Trenches 54 George Martin	Big Changes in the Embedded World Part 1: Solving Connectivity Problems As you well know, most end users require the ability to connect many of their electronic devices to the Internet and other electronics. Simply put: when you are designing a new product, connectivity matters. Download: Martin-244.zip
From the Bench 58 Jeff Bachiochi	Recharging Portable Devices A DIY Power Adapter Design When traveling with multiple portable devices, having the ability to recharge quickly and easily is key. But why buy AC adaptors when you can design your own all-in-one solution? Here's how. Download: Bachiochi-244.zip
Silicon Update 66 Tom Cantrell	Heat Harvester A Look at Thermal Energy Production Green is the new black, and the Silicon Wizards are doing their part with chips that do more for less. But maybe there's another answer. Instead of just using less energy, why not use all the energy, and there's a lot of it, that otherwise goes to waste?
74	Crossword Puzzle
78	Crossword Puzzle - Answers for Issue 243
79	Advertiser's Index / December Preview
80 Steve Ciarcia	HTML Priority Interrupt Low-Tech Success

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