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Features

A Practical Guide to Using A Bitscope by Michael Simpson
EXCLUSIVE-ONLINE ARTICLE. A computer-based scope called the BitScope. Page 0

Steinmentz Father of Elec Engineering by Vaughn D. Martin
EXCLUSIVE-ONLINE ARTICLE. Historians often miss inventor’s most important inventions — and even miss great inventors altogether! Page 0

A Primer on Phase Locked Loops by Gerard Fonte
Learn the fundamental principles that PLL circuits embody and try your hand at a couple applications. Page 44
Projects

Inductive Proximity Sensors Part 2 by Beau Schwabe
As promised last month, the two different operation modes will be explained, as multople coils in a differential sensor approach are used.

Build the RetroGame by Eric Rothfus
Build it, play it, and re-master your skills at Retro Rover and Retris.

Columns

Techknowledgey by Jeff Eckert
TechKnowledgey 2009
Topics covered include "meat" for robot brains, rodent power, dangerous printer particles, plus other cool stuff.

The Design Cycle by Fred Eady
The Design Cycle
Older language, newer interface.

Q&A by Russell Kincaid
Q&A
Softening up a table saw, returning light to Christmas, high voltage generation, plus more.

Personal Robotics by Vern Graner
Robot Art
In an attempt to explore some of the interesting and inspiring ways art and technology intertwine, this month we will focus on a number of works from some talented technoartisans who have used technology and robotics to pursue their muse in interesting and ingenious ways.

PICAXE Primer by Ron Hackett
Taming Unruly LCDs: Part 1
In the previous installment of the PICAXE Primer, I said we would turn our attention toward interfacing our Master Processor with inexpensive LCD displays based on the Hitachi HD44780 controller

Smiley’s Workshop by Joe Pardue
Smileys Workshop: An AVR C Programming Series (Part 9)
The Arduino Way.

Open Communication by Louis E. Frenzel
Wireless Made Easy with a New Kit
Think of your TV remote control, garage door opener, remote keyless entry on your car, and other wireless devices you use daily. Now you can bring that convenience and functionality to other projects.