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Table of Contents
Task
Manager
Looking
Back,
by Jennifer Huber
Priority
Interrupt
What’s
Another Watt or Two?,
by Steve Ciarcia
New
Product News,
edited by John Gorsky
—Feature
Article —
H8/38024F-Based
Programmable Timer
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Read
it now!
by Richard Wotiz
No more fussing around with household timers. Now you can manage
time-sensitive activities like exercise routines
with Richard’s H8/38024F-based programmable
timer. Want the alarm to sound every 10 minutes
without your having to reset the time? No
problem. Simply key in your requirements beforehand.
p. 14
Keywords:
Programmable timer,
H8/38024F,Yoga, LCD, ADC, PWM, battery
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ABOVE
THE GROUND PLANE
Building
Boxes
Ed
Nisley
Ever wonder how Ed packages the gadgets he shares
with us? This month he gives box building its due.
From reusing large boxes to building small ones,
it’s all inside this column. p. 22
Keywords:
Construction,
boxes, enclosures, recycling, holes, mechanics,
panels
(If you have pop-ups disabled, click
here for a password.)
—Sponsored
Article —
Light-to-Frequency
Conversion (Part 1):
TSL230R-Based Pulse Oximeter
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Read
it now!
by Jeff
Bachiochi
TAOS
light-to-frequency converters are becoming
increasingly popular amongst designers whose
applications require light-sensing capabilities.
One reason why is because designers want digital
output rather than analog. In this column,
Jeff explains why a TAOS TSL230R is the perfect
part for the pulse oximeters used in hospitals.
p. 26
Keywords:
Light, Frequency,
TSL230R, blood pressure, oxygen levels, light
absorption, heart rate, PIC16F873
Sponsored
by: TAOS
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Atmel
AVR 2004 Design Contest Winners Announcement
p. 32
Visualizing
History: Record and View High- Level Software
Behavior
Scott
McOlash
Software
can be challenging to understand, especially when
it doesn’t behave as expected. Traditional debugging
tools and techniques provide insight into what your
code is doing, but only at a low level. Fortunately,
Scott can teach you a better way to visualize the
high-level behavior of software systems. p. 36
Keywords:
Software debugging, trace buffer, timestamps,
events, logs, UML
(If you have pop-ups disabled, click
here for a password.)
APPLIED
PCs
RabbitWeb
HTTP Server
Fred
Eady
Neither power outages nor hurricanes can keep Fred
from helping you create web page interfaces that
control Rabbit-based embedded systems. Read on to
learn how he recently built a RabbitWeb HTTP server
under some of the worst conditions imaginable. p.
44
Keywords:
Web, HTTP,
server, RabbitCore RCM3700, RabbitWeb
(If you have pop-ups disabled, click
here for a password.)
Artificial
Life Display (Part 1): Design Basics
Bob
Armstrong
Bob’s
artificial life display simulates a cellular automaton
designed by John Horton Conway in 1970. Is this
more art than engineering? The answer is in the
eye of the beholder. In the first part of this series,
Bob shows you how his innovative design works. p.
54
Keywords:
Game of Life, display, LED, clock, MAX7219,
89C51RD2, IR
(If you have pop-ups disabled, click
here for a password.)
An
FPGA Experimenter's Board
Philip
Nowe
Philip
sees an FPGA in your future. Why? They’re inexpensive,
and you can tailor them to meet your design goals.
Read on to learn how easy it is to build a Spartan-3-based
FPGA experimenter’s board. p. 62
Keywords:
FPGA, experimenter board, Spartan-3, XC3S50,
XC3S200, SC3S400, parallel port, serial, clocks,
SRAM, LEDs, WebPACK, PicoBlaze
(If you have pop-ups disabled, click
here for a password.)
Reference
Generation: Build a 60-Hz Generator with an
NCO
Tom
Napier
Is
it possible to generate a pure 60-Hz sine wave with
an NCO? After crunching some numbers and looking
through past issues of Circuit Cellar, Tom did just
that. Read on to learn how he used a PIC-based firmware
NCO to build a 60-Hz generator. p. 72
Keywords:
60-Hz sine wave generator, NCO, frequency, phase,
smoothing, filter
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here for a password.)
SILICON
UPDATE
Position Statement
Tom Cantrell
Tom says Xemics’s SlimGPS represents a technological
breakthrough that will bring GPS capability to a
slew of products like cell phones, PDAs, and economy
cars. Not only is the tiny, low-power, three-chip
module easy to work with, it’s surprisingly affordable.
p. 78
Keywords:
GPs,
SlimGPS, timing, DGPS, NMEA
(If you have pop-ups disabled, click
here for a password.)
Test
Your EQ
Index of Advertisers
PREVIEW
January #174
Embedded
Applications
Build a Digital Video Recorder
Microcontroller-Based
Nitrox Analyzer
Artificial Life Display (Part 2): Construction
Z8 Encore!-Based Audio Processor
PC-Controlled RC Device
Signal Processing with the ADuC812
Digitally Control
Power Factor Correction
APPLIED PCs Embedded
Wi-Fi with TRENDnet
FROM THE BENCH
Light-to-Frequency Conversion (Part 2): Pulse
and Oxygen
SILICON UPDATE Hot
Enough for You?: Hot Chips 16 Roundup
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