Circuit Cellar Ink 197
December 2006

Table of Contents


CJ Abate

HTML Task Manager

The 21st-Century Designer


John Gorsky

New Product News

  • AVR Dragon low-cost AVR development tool from Atmel Corp.
  • AD8599 dual low-noise op-amp from Analog Devices, Inc.
  • 4-mm Linear Shaft servomotor from Nippon Pulse America
  • QF1D512 versatile FIR engine from Quickfilter Technologies, Inc.
  • uM-FPU V3 floating-point coprocessor chip from Micromega Corp.
  • MultiWise Connector technology from Onanon, Inc.
  • EBC-855-G EBX-compatible Intel 1-GHz Celeron SBC from WinSystems
  • U1250A series of digital multimeters from Agilent Technologies, Inc.
  • PIC18F97J60 microcontrollers with Ethernet from Microchip Technology, Inc.
  • LT6003 family of ultra-low-power opamps from Linear Technology Corp.


Greg Cloutier

ARM Scope

Build an Analog Oscilloscope Companion

Greg's ARM Scope improves upon ordinary analog oscilloscopes that don't provide suitable results at low speeds. The LPC2138-based system features a timed PWM output for the more precise calibration of the oscilloscope as well as an analog input and an analog output with a graphical display. As a result, the displayed signal is more accurate at high or low speeds.



Samir Lohani

Digital Instrument Panel

A Simple Panel for Diesel Engines

With Samir's digital panel for diesel engines, you can view critical engine-related data on a PC, HMI console, or Bluetooth-enabled portable device. You can use the panel as a stand-alone device or as a diesel engine's preprocessor in a PLC-based system.



Kyle Cameron
Jeremy Warren
Shane Reierson
Chris Rittaler
Nick Brady

Multitiered Security System

Use this multitiered PIC18F4580-based security system to bump up the security in your home or office. You can switch the system back to normal mode with only a few clicks of your mouse.

Download: Warren

Above the Ground Plane


Ed Nisley

Filter Figures

Ed revisits a filter design he worked on back in 2003, but this time around, he has better instruments. Read on for information about filter shapes, flatness, and tradeoffs with skirt steepness. He also describes the effect a wider filter has on the output in the application.



Aubrey Kagan

Visual Basic 2005 and the Serial Port

The capabilities of Visual Basic 2005's serial port model may seem limited, but if you know what you're doing, you can definitely use it for numerous projects. Aubrey recently got creative with Visual Basic 2005. Now you can too.



Alan Bate

Third Overtone Crystal Clock Oscillator

Alan describes a requirement for a low-jitter, 54-MHz third overtone design. It's a good solution for high-volume manufacturing.


Applied PCs


Fred Eady

Ethernet on a Chip

This month, Fred describes his recent work with the ASIX Electronics AX11005 development kit. Using a Keil C compiler and some Digital Core Design hardware, he created a powerful Ethernet development suite that now enables him to produce some pretty exciting Ethernet-based equipment.


From the Bench


Jeff Bachiochi

Portable Lightning Detector

Looking to protect your home and electrical systems from lightning? Jeff describes lightning protection technology and explains how to build a PIC16F687 microcontroller-based portable lightning detector.


Silicon Update


Tom Cantrell


Twenty-five years after the debut of the original, a new '51 MCU is making headlines. Tom describes Ramtron's VRS51L3074 FRAM-enhanced '51 MCU and prepares you for what's to come.


Crossword Puzzle


Advertiser's Index / January Preview


Steve Ciarcia

HTML Priority Interrupt

Going for the Brass Ring

FTP Directory for INK 197
Follow this link to order a copy of INK 197

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