Circuit Cellar Ink 165
April 2004

Table of Contents


Jennifer Huber

HTML Task Manager

Model Robot


John Gorsky

New Product News

  • MC73110 motor control IC from Performance Motion Devices, Inc.
  • PIC18F4331/4431 and PIC18F2331/2431 motor-control microcontrollers from Microchip Technology, Inc.
  • BSP75G protected MOSFET switch from Zetex, Inc.
  • LT1407(A) two-channel 3 Msps ADCs from Linear Technology Corp.
  • OS Embedder kit for embedded SBCs from Octagon Systems Corp.


David Tweed

HTML Test Your EQ


Joseph Miller

HTML Mini Rover 7

Electronic Compassing for Mobile Robotics

Electronic compassing is one of the most intelligent ways to provide absolute heading information for a mobile robot. In this article, Joseph explains why the PNI V2Xe compass turned out to be the best fit for his Mini Rover 7 robot, which he modeled after the NASA/JPL Rocky 7 Mars rover.



Brian Millier

HTML BasicCards 101

Part 2: Use in a Liquid Nitrogen Monitor

Now that you're familiar with ZeitControl's BasicCard, it's time to take a closer look at the process of programming one and incorporating it in a design. Brian shows you how he integrated BasicCard technology in the design of a liquid nitrogen generator.



Ingo Cyliax

Build a Small Robotics Platform

Inspired by the robots used by public works departments to investigate pipe damage in local sewage systems, Ingo set out to build his own robotic surveillance unit. Although small, this RCM3610-based robot boasts bump sensors and an odometer. Whether you need an inexpensive surveillance solution or an upgradeable base module, this robotics platform is the first step in the right direction.



Victor Kremin

Low-Cost Intelligent Sensors Network

Flash Innovation 2003 Design Contest Winner

Victor’s 68HC908QY4-based intelligent sensors network is an inexpensive solution for applications that require low-speed, two-wire bidirectional data communication. A simple time-triggered protocol ensures a predictable data delivery time. The quasi-harmonic constant frequency network signals are sheltered from electromagnetic compatibility problems.



Jay Francis

Robot Upgrade

Use a Microcontroller to Emulate an I2C EEPROM

It's amazing what you can do with a PIC and a toy robot. Jay presents an interesting project. He came up with a method of interfacing to the electronics of a Spybot robot by using a PIC16F876 to emulate an I2C EEPROM. The result is an enhanced robotics system that's the perfect foundation for more complex designs.


Applied PCs


Fred Eady

A Wireless Ethernet Solution for the People

Finding the right wireless solutions for your embedded projects can be difficult, especially if you're on a tight budget and can't get the right parts and documentation. That's why Fred set out to find an accessible solution for those of you searching for a sure-fire way to bring wireless Ethernet capability to your designs. DPAC's wireless 802.11b evaluation and development kit turned out to be the perfect fit.

Above the Ground Plane


Ed Nisley

Pennies to Heaven

The Lenz Launcher

"High voltage, high current, and flying objects." Need Ed write more? Nope. He's already got your attention. Read on to learn how Ed built his Lenz Launcher, which can, as he so gently puts it, "punch conductive disks into the ceiling with a loud bang and bright sparks."

From the Bench


Jeff Bachiochi

USB in Embedded Design

Part 1: The Undeniable Benefits

How much do you really know about USB? This column is a great place to start educating yourself about the basics. And it couldn't have come at a better time. Serial and parallel ports may soon be things of the past.


Silicon Update


Tom Cantrell

Powered Points

If you're thinking about designing a device that plugs into Ethernet, Tom suggests that you learn as much as possible about 802.3af. This column is your power-over-Ethernet (PoE) primer. Read on to see why Tom is so optimistic about PoE technology and the chips that will drive it.


Advertiser's Index / May Preview


Steve Ciarcia

HTML Priority Interrupt

Beach Days

FTP Directory for INK 165
Follow this link to order a copy of INK 165

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