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Table of Contents
Task
Manager
Exemplary
Designs,
by Jennifer Huber
Priority
Interrupt
11-lb
Bricks,
by Steve Ciarcia
New
Product News,
edited by John Gorsky
Analog Bar Graph Display
Stuart
Ball
Stuart’s
LCDMeter is an affordable alternative to high-resolution
analog displays. The key is to use a character-based
LCD to display analog values. Read on to learn how
it’s done. p.12
Keywords:
LCD, HD44780, bar graph, ATmega8515, MAX1242
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here for a password.)
—Feature
Article —
The
Silicon Wallet
CY8C27443-Based
Data Manager
PSoC High Integration Challeng
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Read
it now!
by Alberto
Ricci Bitti
Always forgetting passwords? Try Alberto’s
PSoC-based Silicon Wallet. The portable system
enables you to keep track of all your old
passwords and input new ones wirelessly. p. 18
Keywords:
PSoC, CY8C27443,
data manager, wallet, password, LCD, web browser,
JavaScript, wireless, encoder
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Digital
Watermarking
Shlomo
Engelberg, Yair Marom, & Roi Mauda
Digital
watermarking is a method of marking files for the
purposes of authentication and security. Shlomo,
Yair, and Roi used their knowledge of digital watermarking
to develop a system that enables police departments
to check if audio file recordings have been tampered
with. p. 28
Keywords:
Digital watermarking, authentication, audio, tamper,
adaptive, sequences, pseudo-noise, spread spectrum,
MATLAB, Simulink, ADuC812
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here for a password.)
ABOVE
THE GROUND PLANE
LED OPTICS: Lights! Diodes! Current! Math!
Ed
Nisley
Do
you ignore the LEDs in your circuits? Perhaps it’s
time you took them a little more seriously. In this
column, Ed shines some light on LED technology.
He covers everything from light patterns to the
terms you’ll find in LED datasheets. p. 34
Keywords:
LED, optics, patterns, viewing angle, brightness,
beamwidth, irradiance, logarithmic amp, TSHA5502
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here for a password.)
Happy
Terminal: A Tooth PIC-Based Terminal Emulator
Richard
Hoptroff
Richard’s
ToothPIC-based terminal emulator is an alternative
to HyperTerminal. HappyTerminal is easier to set
up than the RS-232 signal levels required by HyperTerminal.
p. 38
Keywords:
ToothPIC, terminal emulator, serial,
PIC18LF6820, Bluetooth
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here for a password.)
Send
and Receive VoIP
Jingxi
Zhang, Yang Zhang & Huifang Ni
Zilog 2004 Flash Nets Cash Design Contest
Winner
Last
July, Jingxi, Yang, and Huifang showed you how to
build an eZ80F91-based VoIP system for transmitting
phone calls over the Internet. In this article they
cover voice data compression, packetization, transmission,
and reception processes.. p. 44
Keywords:
VoIP, eZ80F91, data flow, encoding, G.711,
PCM, RTP, ZTP, TLV320AIC22C
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here for a password.)
Maxed-Out
PGA
Brian
Millier
rian
shows you how he built his evaluation board and
shares code routines that you can implement with
an AVR microcontroller to configure an Analog Devices’s
AD8555. p. 52
Keywords:
AD8555, PGA, AVR, AT90S2313
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here for a password.)
AVR-Based
Fuel Consumption Gauge
Bruce
Lightner
Atmel
AVR 2004
Design
Contest Winner
With
gas prices at record highs, wouldn’t it be useful
to be able to monitor your vehicle’s fuel consumption
rate in real time? Bruce’s fuel consumption gauge
is the answer. p. 59
Keywords:
Fuel consumption gauge, OBD-II, SAE J1850 VPW,
SAE J1979, display, analog meter, AT90S8515, WinAVR
(If you have pop-ups disabled, click
here for a password.)
SILICON
UPDATE
Direct Finder
Tom Cantrell
Before dropping big bucks on a GPS module for a
new design, consider the potential of Hitachi’s
inexpensive HM55B digital magnetometer chip. With
a little steering from Tom, you can easily add direction-finding
capability to virtually any design. p. 68
Keywords:
Digital magnetometer, HM55B, compass,
magneto-resistive, magneto-inductive
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here for a password.)
APPLIED
PCs
Transporting Sensor Data
In-Depth Look at the CY3635 WirelessUSB Kit
Fred
Eady
You
can now transport sensor data using wireless USB.
All you need is a CY3635 WirelessUSB kit and little
guidance from Fred. p. 72
Keywords:
CY3635, WirelessUSB, CY8C27443, RF, CYWUSB6935,
enCoRe
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here for a password.)
FROM
THE BENCH
Understanding Semiconductors
Jeff Bachiochi
Jeff takes us back to basics this month with a look
at the development of semiconductor electronics.
He begins by describing in simple terms the essential
building block of semiconductor technology: the
PN junction. p. 78
Keywords:
Semiconductor, junction, PN, dopants,
voltage, current, diode, Zener, varactor, PIN, LED,
photodiode, optoisolator, transistor, amplifier,
FET, MOSFET, JFET
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here for a password.)
Crossword
Index of Advertisers
PREVIEW
November #184
Graphics
& Video
Large-Scale
Electronic Display
Water Pressure Sensor
Automatic Microcontroller Task Scheduling
Virtual Billiards
Debugging
Commercial Code: A Quick Fix for Galaga Code
Measure Low-Level Radioactivity: Build a Sensitive
Radiation Counter
Multifunctional Bicycle Computer
Digital
Video in an Embedded System
APPLIED PCs
Implement a 32-Bit ARM Solution
FROM THE BENCH
Infrared Distance Measurement
SILICON UPDATE
Wi-PHY Chip
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