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April 2007

Nuts and Volts Magazine

Build The Mysterious Magic Box

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Features

USB For Projects On A Budget

If you have an idea for a device that communicates with PCs, the chances are good that the device will connect to the PC via the Universal Serial Bus (USB). You’re probably well acquainted with USB as the interface...


Fuse And Meter Savers

Here are three circuits which can save time and prevent frustration. They go well with “Don’t Blow a Fuse” by Ronald Newton (Nuts & Volts, August 2006, page 40)...


Understanding Digital Buffer, Gate, and Logic IC Circuits - Part 1

Logic gate basics and a detailed look at practical TTL and CMOS digital buffer IC circuits. Part 1



Projects

X-10 Interfaces - Part 3

Last month, we looked at interfacing your PC to various 1-Wire weather sensors. This month, we are going to dive head-first into home automation. I am going to show you how to use your PC to control lamps and appliances using the X10 protocol.


Pulse Speed Timer

There is a delay between when your heart beats and when the pulse is felt at your wrist (or elsewhere). This delay depends upon a number of physical factors, including the elasticity of the walls of the arteries...


The Mysterious Magic Box - Part 1

This unique DIY construction project blends electronics technology with carefully planned hand craftsmanship. It is where the old world meets the new. Its delightful innovative twists will surely amuse you...



Columns

Personal Robotics
by Phil Davis
Parameters On the Fly - Part 2
Last month, I conceptually designed a hand-held console which would allow one to remotely change critical parameters in their autonomous robot. Since last month, I decided that I wanted to go into more detail on the software and some of the hardware...

Getting Started With PICS
by Chuck Hellebuyck
PIC vs. PIC Speed Test
If you look through Nuts & Volts or surf the Internet, you’ll see lots of different Microchip PIC-based development chips and modules offering all kinds of different features...

In The Spotlight
by Marvin Mallon
An Interview with Wayne Thorpe
Mesa, AZ is home to one of the largest distributors of electronic equipment and supplies in the country. The 12,000 square foot facility of Circuit Specialists, Inc., houses the more than 11,000 items that they sell by mail order, as well as online...

TechKnowledgey
by Jeff Eckert
Techknowledgey 2007
Events, Advances, and News

The Design Cycle
by Peter Best
In The Shadow Of The 8051
I can recall making the “step up” to the eight-bit 8051 from the venerable eight-bit 8048 way back when dinosaurs still roamed the plains and valleys...

Open Communication
by Louis E. Frenzel
MIMO 101: Next Generation Wireless Technology is Finding Its Way Into Most New Systems
In case you haven’t heard, MIMO means Multiple Input Multiple Output which — by itself — still does not explain very much. It is a relatively new wireless technique that makes use of two or more transmitters, receivers, and antennas to greatly improve...

Departments

New Products
by Nuts & Volts Magazine
New product reviews

News Bytes
by Nuts & Volts Magazine
New Program for SchmartBoard Advocates