Circuit Cellar Ink 152
March 2003

Table of Contents


Jennifer Huber

HTML Task Manager

HCS II Evolution


John Gorsky

HTML New Product News

  • MAX1069 and MAX1169 I2C 58.6 ksps, 14- and 16-bit ADCs from Maxim Integrated Products
  • HC9S12A64, HC9S12D64, and HC9S12DJ64 microcontrollers from Motorola, Inc.
  • SeaLINK family of serial-to-Ethernet converters from Sealevel Systems, Inc.


David Tweed

HTML Test Your EQ


Roger Johnson
Chris Lentz

HTML 2-D Optical Position Sensor

Surprisingly, it isn't too difficult or expensive to build a two-dimensional optical position measurement system. In this article, Roger and Chris show you how to do it. All you need is a PIC, LCD, and some analog gadgets to get moving on the perfect PSD project.

Download: Johnson & Lentz 152.ZIP


Victor Kremin

Intelligent Light-Effects Controller for Entertainment Systems

Unimpressed by the outmoded lighting systems used in many entertainment venues, Victor built an intelligent light-effects controller. In contrast to manually controlled systems, this high-tech award winner uses participants' actual movements to create visual effects.

Download: Kremin.ZIP


Praveen P. Deshpande
Prajakta Deshpande

MCS-51 SBC for the Classroom

Part 2: Software Development

Last month, Praveen and Prajakta challenged you to test some hardware and come up with a few embedded applications of your own. Now that you've had some time to think, they are going to show you how to implement a "retargetable" debugging monitor program.

Download: Deshpande 152.ZIP


Robert Morrison

Updating the Home Control System

Part 1: FPGA Upgrade Board

For years, home automation enthusiasts have been putting their time, energy, and expertise into the home control system. Following suit, Bob is updating the system and using an FPGA module to prepare for future enhancements like connections to Ethernet and the 'Net.

Download: Morrison 152.ZIP


Jan Szymanski

Build an MP3 Player

Now that Jan has put together a tutorial on building an MP3 player, you have an important decision to make: Should you buy an MP3 player or build your own? Sure, building one from scratch is more complicated, but it makes for a more interesting afternoon.

Download: szymanski 152.ZIP


Brian Millier

HTML Using Rotary Encoders as Input Devices

Numeric keypads aren't the only options for your electronic instruments. You may save money by choosing the often-overlooked rotary encoder. Here, you'll learn how rotary encoders work, how to connect them to a micro, and how to read them with the right code.

Download: Millier 152.ZIP


Chris Cantrell

A Look at Computer Viruses

How do the viruses that worry us daily work? How do they replicate? How do they get into operating systems? To answer these questions, Chris played high-tech archeologist and dug up the Stoned virus, a member of the nearly extinct class of boot sector viruses.

Download: Chris Cantrell 152.ZIP

Embedded PC


Fred Eady

Applied PCs

Get Hooked on Video With the STV5730A

The video display portion of a recent project prompted Fred to study on-screen display (OSD) technology. Now that he's back from TV land, Fred will show you how he used an inexpensive OSD -- the STV5730A -- and a PIC to turn a TV into an LCD.

Download: Eady 152.ZIP


Jeff Bachiochi

From the Bench

The Switching Approach, Infiltrating the Linear Supply Market

The word on the street is that the switching converter is rapidly becoming an intelligent (and cost-competitive) alternative to the linear regulator. Read on to find out why Jeff is sticking with the switching approach.


Tom Cantrell

Silicon Update

Not Fading Away

Tom has a message for all of the 8-bit MCU doubters out there: they're not fading away. Shipments are steadily increasing, and it's the companies that stick with the MCU business that will come out on top.


Advertiser's Index / April Preview


Steve Ciarcia

HTML Priority Interrupt

Hammers are for Wimps

FTP Directory for INK 152
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