CURRENT ISSUE
Contests
Table of Contents
|
|
Issue #205 August 2007 — Embedded Development
Task Manager
Another Eclectic Mix, by
C.J. Abate
Priority Interrupt
Let's Count the Lumens,
by Steve Ciarcia
New Product News, edited by John Gorsky
FEATURE ARTICLES
Handheld Multifunction Scope —
Read it now!
by Jingxi Zhang & Yang Zhang
If you need to monitor signals and inspect target devices, you can design
your own LM3S811-based handheld multifunctional oscilloscope. This system
supports several modes: Oscilloscope, Voltmeter, Ohmmeter, Capacitance
Meter, Inductance Meter, Frequency Counter, Logic Probe, and Pulse Generator.
p. 14
Keywords: Oscilloscope, meter, voltage, capacitance, inductance, frequency counter, logic probe, pulse generator, LM3S811, OLED, LT6912
Electronic Bicycle Design
by Roxanne Ahmed, Michael Buchanan, Andrew Clarke,
Chris Elder, & Warren Shrieves
This electronic bicycle will work only as hard as you do. Motor power
is controlled by the amount of torque you apply to the pedals: the harder
you ride, the more torque is added to the rear wheel. Lithium-ion batteries
and ultracapacitors power the system. p. 24
Keywords: Bicycle, Lithium-ion battery, motor control, brushless, ultracapacitor, H-bridge, MOSFET, dsPIC30F6015, ADC, torque, PWM, dynamic regenerative braking
(A link to the article will be emailed to you.)
Text Adventure Gaming
by Chris Cantrell
Remember the old Pyramid 2000 text game? Chris shows you how to use a
Parallax Propeller chip and the Cog Coordination language (CCL)—a simple
interpretive language that he developed for the Propeller—to breathe new
life into the old text adventure game. p. 40
Keywords: Pyramid 2000, Propeller, cog, CCL, RISC, SD card, FAT
(A link to the article will be emailed to you.)
Build a PHP Components Database
by Keith Brown
Keith introduces you to the LAMP software suite and walks you through
your first PHP project: a program for logging and tracking your parts.
Now you can use your favorite browser to access your programs without
having to generate a GUI for new applications. p. 48
Keywords: PHP, database, LAMP, MySQL
(A link to the article will be emailed to you.)
1-Wire in the Real World (Part 1):The Challenges
by Steve Hendrix
Steve explains the challenges of taking a 1-Wire deicing system for small
aircraft from a laboratory prototype to a real-world application. The
ThermaWing Deice System relies on a proprietary algorithm requiring tight
control of surface temperatures to enable the system to melt ice. p. 58
Keywords: 1-Wire, deicing, airplane, temperature sensing, DS2751, reliability, RTD
(A link to the article will be emailed to you.)
COLUMNS
THE DARKER SIDE
Let's Play with EMI!
by Robert Lacoste
Robert sheds light on the “dark” subject of electromagnetic interference.
He covers everything from electromagnetic compatibility (EMC) issues to
helpful design techniques. With a few modifications to your next design,
you will be able to reduce the amount of unwanted radiation emission.
p. 66
Keywords: EMI, EMC, electromagnetic, spectrum analyzer, radiated, conducted
(A link to the article will be emailed to you.)
ABOVE THE GROUND PLANE
Hearing Clearly
by Ed Nisley
After experiencing some hearing loss, Ed decided to perform several measurements
on ears, earphones, and microphones. In this article, he introduces a
circuit that compensates for his poor hearing. p. 71
Keywords: Hearing loss, ears, earphone, microphone, dynamic range, ear canal, filters, MAX5406
(A link to the article will be emailed to you.)
FROM THE BENCH
Graphical User Interfacing
by Jeff Bachiochi
Jeff explains how he used NS Basic to connect the Palm operating system
to a microcontroller through its hard-wired serial connection. Now he
can create applications for handheld devices and harness his PDA’s full
potential. p. 75
Keywords: GUI, PDA, NS Basic, Handspring Visor, communications, display
(A link to the article will be emailed to you.)
SILICON UPDATE
Silicon Secrets
by Tom Cantrell
Tom assuages your concerns about identity theft with information about
some new chips that can protect your embedded designs. Atmel’s AT88SC
CryptoMemory lineup features passwords, encryption, and other security
features that will guard your system from hack attacks. p. 80
Keywords: AT88SC, CryptoMemory, RFID, memory, Smartcard, security
(A link to the article will be emailed to you.)
PREVIEW
Issue #206 September 2007 — Data Acquisition
◊ Smart Power: An
Intelligent Power Supply for Embedded Systems
◊ PIC an
LCD: A Character-Based Serial LCD Controller
◊ Pulse Generation: Encoder
Interfacing to Microcontrollers
◊ Resilience
in Embedded Designs (Part 1): Power Supply, Inputs, and Ground
◊ 1-Wire
in the Real World (Part 2): The Solutions
◊ High-Performance
Motor Controller
◊ Embedded
Scripting
◊
LESSONS FROM THE TRENCHES String Theory
◊ FROM THE BENCH
I-Zip Dashboard
◊ SILICON UPDATE
Game On
|
