You’ll Flip Over This Coin Toss Circuit
by Jim Stewart
Exclusive Online Article: It’s Friday night and you’re hungry, so you decide to go pick up some food. Maybe a pizza, or maybe some kungpao chicken. You love them both, but you must choose one or the other. Do you flip a coin? Sure! But now, you can do it electronically! Let’s build a coin toss circuit! Page 0

Build A Ballistic Chronograph
Electronic Gadgets
by David Collins
Wanna know how fast your projectile is going? Than you need to build this! Page 36

Turning A Microwave Oven Into A Darkroom Timer
Electronic Gadgets
by Al Jaszek
Find out what you can do with a dead microwave, a wooden box, a power cord, and a socket. Page 44

Techknowledgey
by Jeff Eckert
TechKnowledgey 2009
Topics covered include cold fusion... it's back, new Minis arrive, PUMAs, chip sales bottoming, pluys other cool stuff. Page 12

Open Communication
by Louis E. Frenzel
Smart Phones Leading Cellular Growth
The cell phone has become a must-have item in our modern life. You pick it up when you grab your car keys and wallet or purse every day. Page 22

Smiley’s Workshop
by Joe Pardue
Smiley’s Workshop: An AVR C Programming Series (Part 11)
Getting started with the Arduino Projects Kit Page 52

PICAXE Primer
by Ron Hackett
Taming Unruly LCD’s: Part 2
The 14M is the perfect processor for this project. It has more than enough I/O lines and program memory for the task at hand and it’s cheap enough that you can construct two or three complete “serialized” LCDs for the price of one commercial display. Page 67

Developing Perspectives
by Bryan Bergeron
Please visit our Developing Perspectives blog to read the full article and comment. Page 8