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October 2008

Nuts and Volts Magazine

Peanut Butter Monster Detector

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Features

Inverting and Non-inverting Amplifier Design Using Op-Amps

This article discusses simulation results for both inverting and non-inverting amplifiers, using the uA741 pp-amp. Additionally, the article highlights how overall amplifier performance is affected by the gain and bandwidth limitations of the op-amp, as illustrated by PSpice simulations. The uA741 operational amplifier is discussed because it is included in most versions of PSpice, so you can easily repeat the simulations on your own...


How To Dual Boot Microsoft XP With Vista

Most new computer systems come with Microsoft Windows Vista preinstalled. The Vista operating system provides many new features, but suffers from three shortcomings...



Projects

Temperature Gauge Project

We will build a temperature gauge for the range 0°C to 50°C using a thermistor in an analog circuit. Why use a thermistor? Two words: temperature transducers. Along the way, we will look at various ideas such as how to linearize a thermistor, the effect of thermistor self-heating, and zero and span adjust in a gauge...


Microprocessor Controlled Wood Stove Part 1

Many of us burn wood for the numerous benefits that this fuel may provide. I have been burning wood for many years now and have found that anything that will lighten some of the drudgery from the work involved with this is a distinct benefit.


Make The Smart Room Air Conditioner Controller

by Tom Fox

A Microcontroller Based Multipurpose A/C Remote Thermostat



Columns

TechKnowledgey
by Jeff Eckert
Techknowledgey 2008
Events, Advances, and News

Open Communication
by Louis E. Frenzel
The Software-Defind Radio Is Real
Reading Hardware for Software Makes for the Ultimate in Versatility

Q&A
by Russell Kincaid
Q&A
In this column, I answer questions about all aspects of electronics, including computer hardware, software, circuits, electronic theory, troubleshooting, and anything else of interest to the hobbyist.

Smiley’s Workshop
by Joe Pardue
Smiley’s Workshop 3: C Types, Operators, and Expressions
AVR port input and output, and add an eight-bit DIP switch to our learning platform. Part 3

Personal Robotics
by Vern Graner
The Peanut Butter Monster Detector
Build this robotic bedside companion to help ease your child’s nighttime fears.

The Design Cycle
by Fred Eady
Roll Your Own WiFi Spot
This month, we will build a very useful data communications device that is right at home with just about any of today’s laptops, PDAs, and personal computers. Depending on your intended application, our easy-to-build PIC-based data communications device can transfer data using its serial port or its WLAN (Wireless Local Area Network) capabilities. If you prefer to exclude Windows and Linux from your data communications network, the device we’re about to discuss also has the ability...

PICAXE Primer
by Ron Hackett
Build The PICAXE IR Multiboard
This month, we’re going to develop and test our first I/O device for use with the PICAXE-28X1: an 08M-based, multi-function infrared board capable of implementing the entire range of PICAXE IR communications.

Departments

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