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Table of Contents
Task
Manager
Five
Ways to lose Your Wires—by
Jennifer Huber
Priority
Interrupt
Moving
Forward —by
Steve Ciarcia
New
Product News—edited
by John Gorsky
CoolRunner-II-Based
Digital Telemetry Transmitter
by Russ
Lindgren
With the proper guidance,
it’s fairly easy to build a wireless link for a
sensor application that transmits one-way information
like temperature and pressure. In this article,
Russ shows you how to build your own wireless link
with a CoolRunner-II CPLD. p. 10
Keywords:
CoolRunner, CPLD, telemetry,
transmitter, wireless, clock, oscillator, multiplier,
modulation, antenna
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here for password)
Wireless
Vehicle Tracking
Part 1: System Basics
by
Ken Merk
Ken developed a GPS-based wireless
tracking system in an effort to help an electrical
contractor keep tabs on the whereabouts of his mobile
power generators. In the first part of this series,
Ken describes the hardware components and how to
mount them on a PCB. p. 20
Keywords:
Wireless, tracking, vehicle, GPS, NMEA0183, CVDM-3,
V8600A, speech, Flashlite-V25, Forth, antenna, PDI,
mapping, construction
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here for password)
Wearable
Wireless Tranceivers
by
Mathew Laibowitz and Joseph Paradiso
It’s becoming easier to incorporate wireless RF
links in electronics projects, especially when you
know how to select the proper short-range RF device.
Mat and Joe first bring you up to speed on the newest
embedded RF devices. Then, they describe how such
devices were used in a series of wireless wearable
platforms developed at the MIT Media Lab. p.
28
Keywords:
Wireless, wearable, RF, TDMA, CSMA, spread spectrum,
FDMA, RFRAIN, UbER-Badge, networking
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here for password)
APPLIED
PCs
Picking Apart Microchip's dsPIC
by
Fred Eady
You’ve heard a lot about dsPIC technology. Now it’s
time for the specifics. This month, Fred takes you
on a dsPIC tour, covering both the hardware and
software. Whether you’re a DSP veteran or new to
the game, this dsPIC primer is just what you need
to get moving on your next project. p. 40
Keywords:
dsPIC, dsPICDEM, DSP, registers, instruction
set, development board, vector
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here for password)
$1 Wireless Interface
by
Larry Martin
Do you want a wireless interface for your next project?
With a coil, a capacitor, and a transistor, you
can make your next project emulate a radio frequency
identification device (RFID), commonly called a
“tag” or “RFID tag.” In this article, Larry shows
you how. p. 50
Keywords:
Wireless,
RFID, reader, tag, backscatter, active, passive,
e5551
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here for password)
ABOVE
THE GROUND PLANE
Filters and Firmware
by
Ed Nisley
As Ed explains, filtering can be used to enhance
desired signals or refuse unwanted ones. In his
December 2003 column, he explained how his circuitry
converted a 10-MHz sine wave into an 11.25-MHz microcontroller
clock. This month, Ed shows you how another filter
extracts the 60-Hz power line signal. And, he explains
why a combination of hardware and firmware squanders
most of the resolution implied by a GPS-locked reference
clock. p. 56
Keywords:
Filter, extraction, 60 Hz, isolation, MAX267,
band-pass filter, switched capacitor, AT89C52P,
firmware
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here for password)
Wireless
Water Heater
by
Dan Beadle
Some people like to remotely start their cars when
it’s cold outside. Dan took this idea one step further
by Internet-enabling his mountainside retreat’s
hydronics system. The Airborne-based system allows
him to warm the house well in advance of his arrival.
p. 60
Keywords:
Wireless, Airborne module, Wi-Fi, web server,
heater control, communications, temperature, LM35DZ,
LM61CIZ, VB.NET
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here for password)
—Feature
Article —
The
Growth of the Atmel AVR Family
Atmel
AVR 2004 Design Contest Primer
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Read
it now!
by Jeff
Bachiochi
The
Atmel AVR family has been growing rapidly
since its debut in the late 1990s. Today,
you have several AVR products to choose from
when preparing for a project. This month,
Jeff delves deeper into the AVR story, and
provides an example of how an AVR-based design
allows him to control a thermostat.
p. 68
Keywords:
Atmel AVR, contest
primer, instruction set, RF, security, USB,
LCD, XPort
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SILICON
UPDATE
’51 Flavors
by Tom Cantrell
“The chip that wouldn’t die.” That’s how Tom characterizes
the 8051, which first hit the scene in the late
1970s. The chip has persevered, and today, some
of the hottest chips on the market, such as the
Cygnal (now Signal Laboratories) C8051F120, owe
much of their success to the 8051 architecture.
p. 76
Keywords:
8051,
John Wharton, C8051F120, memory, cache, I/O, PLL
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here for password)
Test
Your EQ
Index of Advertisers
PREVIEW
March #164
Embedded
Applications
Backpack
Water Level Monitor
BasicCards 101: Part 1: Program Your
First Smartcard
Wireless Vehicle Tracking: Part 2: Speed
Forth-Based Speech Synthesis
Software-Only Hardware Simulation
The Ultimate
Firmware NCO?
TTP/A Protocol and Design
APPLIED PCs: The UCA93LV Advantage: Implement
I2C on Your PC
FROM THE BENCH: Intelligent Current Sensing:
Harness the Power of the ACS750 Hall Effect Current
Sensor
SILICON UPDATE:Memory Memoir
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