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Table of Contents
Task
Manager
One
for the Library,
by Jennifer Huber
Priority
Interrupt
The
Most Success Yet,
by Steve Ciarcia
New
Product News,
edited by John Gorsky
The
Engineer’s Alarm Clock
Design a PIC-Based Lamp Controller
Aaron
Dahlen
Aaron
always wakes up to a rising sun, regardless of the
weather outside. How’s that possible? He designed
a PIC18F252-based alarm system that gradually brightens
a 120-VAC bulb over a half-hour period. p. 18
Keywords:
Clock, alarm, PIC18F252, lamp, curve fitting, dimmer,
triac, phase, DS1302, infrared, LCD
(If you have pop-ups disabled, click
here for a password.)
An
SPWM Calculator
Using
the Switched Integration Technique
Armando
Rosas Morato & Sergio Elizarraras Rodriguez
Sine
pulse-width modulation (SPWM) is a technique frequently
used in variable frequency drives for speed control
in AC motors. Armando and Sergio present the QUSPWM
algorithm as a simpler variation of SPWM based on
a switched integration operation. p. 32
Keywords:
SPWM, Sine pulse-width modulation, QUSPWM, quadrature,
VFD, AC, motor, MATLAB/Simulink, simulation
(If you have pop-ups disabled, click
here for a password.)
APPLIED
PCs
Uncomplicated
Wireless Networking
Fred
Eady
Wireless networking is easy, as long as you have
the right tools for the job. This month, Fred shows
you how to “get on the air” with Z-World’s Wi-Fi
application kit, which includes a Linksys Wi-Fi
card and RCM3100 module. Go wireless in no time.
p. 40
Keywords:
Networking,
wireless, RCM3100, Wi-Fi, 801.11b, sniffing, API
(If you have pop-ups disabled, click
here for a password.)
—Feature
Article —
Multilab
Build a Z8 Encore!-Based Multipurpose Test
Instrument
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Read
it now!
by Brian Millier
Brian’s Multilab is
comprised of an arbitrary function generator,
a digital pulse generator, and more. Read
on to learn how he built this multipurpose
test instrument. p. 46
Keywords:
Test instrument,
Z8F6401, TC500, DAC7611, DAC0801, ARB, arbitrary
function generator, waveforms, IrDA, DMA,
pulse generator, voltmeter, voltage reference,
Palm, PC
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FROM
THE BENCH
Create
a Hybrid Hub
Jeff
Bachiochi
This month, Jeff shows you how to build your own
four-port USB hub with a TPS2071 power controller,
a TUSB2046 data controller, and a few other simple
parts. p. 54
Keywords:
USB, hub, power, TPS2071, TUSB2046, data control,
transient protection, SN65240, compliance, USBCommandVerifier
(If you have pop-ups disabled, click
here for a password.)
Microcontroller-Driven
Sound Effects
Praveen
Deshpande & Prajakta Deshpande
Adding tunes and tones to embedded applications
just got easier. Praveen and Prajakta show you how
to generate melodies with an MCS-51 microcontroller.
p. 62
Keywords:
Sound, microcontroller, AT89C2051, piezoelectric
buzzer, timer/counter, duration, music theory, RTTTL,
ring tones, compression
(If you have pop-ups disabled, click
here for a password.)
DMX-512
Control
Build a USB-to-DMX-512 Converterr
Stefan
Kalbermatter
Stefan recently found himself in need of a controller
for a lighting system. In this article, he describes
how he used an FTDI FT232BM USB-to-serial converter
chip to achieve DMX-512 control. p. 72
Keywords:
DMX-512, USB, FT232BM, protocol, break pulse,
data stream, refresh, drivers, termination
(If you have pop-ups disabled, click
here for a password.)
SILICON
UPDATE
A Simple Plan
Tom Cantrell
Is the MAXQ a RISC, CISC, or something in-between?
According to Tom, it doesn’t matter. What is important
is that the MAXQ is becoming increasingly competitive
in the MCU market. p. 78
Keywords:
MAXQ,
RISC, CISC, Turing, instructions, pipeline, LCD,
timer/counter, multiplier, memory
(If you have pop-ups disabled, click
here for a password.)
Test
Your EQ
Index of Advertisers
PREVIEW
October #171
Data
Aquisition
Intelligent Sensor Head
E-Field Serial Touchpad
Telephone
Message Watchdog: An Intelligent Call-Forwarding
System
Pseudo-Random Noise Theory and Applications
Single-Board Logic Analyzer
Supervisory Control and Data Acquisition
ABOVE THE GROUND PLANE
Stepper Driver (Part 2): Digital
APPLIED PCs Big PICs
FROM THE BENCH
Digital Radio Control
SILICON UPDATE Try
Hard with a Vengeance
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