Circuit Cellar Ink 185
December 2005

Table of Contents


Jennifer Huber

HTML Task Manager

Finding Inspiration


John Gorsky

New Product News

  • MAX4901-05 single-supply analog switches from Maxim Integrated Products, Inc.
  • OrbiTrak PC/104 GSM modem with GPS from Parvus Corp.
  • LT3486 dual step-up converter for white LEDs from Linear Technology Corp.
  • Half-InchModem for voice, fax and data from Radicom Research, Inc.


Brad Zdanivsky

Browser-Based Telemetry System

Brad used Java to create an Internet browser-based telemetry system for his rock climbing expeditions. In addition to generating an Internet feed, the inexpensive system collects heart rate, blood pressure, and temperature data.



Nick Dargahi

Long-Range Wi-Fi Network

Last spring, Nick and a team of electrical engineering students created a 1.23-mile Wi-Fi link across San Francisco's Lake Merced. In this article, he shows you how to build a similar network without breaking the bank.


Jennifer Huber

HTML Renesas M16C Design Contest 2005 Winners


Leonid Shvarzberg

Downlink Telemetry Module

Leonid recently built a downlink telemetry module for his RC helicopter. The on-board system collects status information about the helicopter and transmits it via a wireless ZigBee link to a laptop. The system is built around an MC1392 SARD board.



Steve Hageman

LAN-Based Data Acquisition System

Steve built his LanDas LAN-based data acquisition system as a replacement for his old serial-based design. It enables him to reuse code and software to acquire data with his PC.



Alexandre Desnoyers

Unlock the Power of the PCI Bus

The PCI bus is a major part of every PC. Alexandre shows you how to unlock the PCI bus's power for your next project. His next project is a system to upload uCLinux to the SDRAM chip on the PCI board and then boot a Microblaze system implemented in the same FPGA.


Above the Ground Plane


Ed Nisley

ADC and DAC Bandwidth

Sampled Signals

ADC bandwidth. What really happens when the analog input frequency exceeds the ADC's ability to handle it? Everybody talks about Nyquist, but what does it look like in the real world? Ed shows you with a low-frequency, sampled-data circuit.


Applied PCs


Fred Eady

Assume Control with the MC104P

Fred was blown away when he saw Calmotion's MC104P PC/104 form factor controller in action at the July Microchip MASTERs Conference in Arizona. After introducing you to the MC104P, he explains how you can bring PC/104 functionality to your next project.


Ken Chapman

Solar Panel Monitor

Ken built a multiprocessor system to monitor the solar panels on his house. You can use his fully programmable system to monitor and record numerous forms of technology.


From the Bench


Jeff Bachiochi

Portable Color Organ

A color organ is an electronic circuit that uses audio signals to control the brightness of lights. The stronger the audio signal, the brighter the lights. Jeff recently used an LM4970 audio synchronized color LED drive in a portable color organ design.


Silicon Update


Tom Cantrell

Get the LEDs Out

Interested in adding an LED lightshow to your next design? Tom's got the perfect part for you. This month he illuminates Dialog Semiconductor's DA9026 universal LED controller and lightshow generator. Let there be light!


Crossword Puzzle


Advertiser's Index / January Preview


Steve Ciarcia

HTML Priority Interrupt

Filers Versus Pilers

FTP Directory for INK 185
Follow this link to order a copy of INK 185

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