N&V December 2004

N&V December 2004
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Price: $6.00
Product ID : SKU15924




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Build A Data Logger - For Less

by Karl Lunt

I often need some kind of data logging ability. Whether it’s measuring a battery voltage under load, temperature under the house, or light levels in the garden, it seems there’s always a need to sample sensor measurements over time for something. Happily, a data logger makes an excellent embedded control project; you end up with a useful gadget that is fun to build. Page 0

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Digital R/C Airplane Camera

by Dan Gravatt

I’ve always been interested in photography and, when I first saw an advertisement for a “key chain digital camera,” I had to get one. In fact, I got two, sincethey were inexpensive and so small that I figured I would lose one. Page 0

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Focus On The Shot, Not The Shutter

by Rajkumar Sharma

This project features a simple, small unit and full-use capabilities for arial, wildlife, and physically dangerous photography. Page 0

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Garage Parking Assistant

by Dave Siegel

Looking for an easier way to park your car or truck in the garage? Read on. Parking vehicles accurately in a standard-sized garage requires judgment, experience, and a little bit of guesswork. In my own case, there isn’t enough room to walk in front of my van if I pull it in too far. If I don’t pull in far enough, the rear bumper of the van will block the garage door’s closing path. This has been a challenge for several years... Page 0

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The Ever Shrinking µC - PART 1

by Peter Best

Six Pins and One MIP — If You Can See It! Page 0

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The Telephone Rang Indicator

by Michael Kornacker

Build This Device That Informs You When Someone Has Called Your Telephone Page 0

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Theory of Zeroing Circuitry

by John Kocerek

Cancel Out Your DVM Lead Resistance Page 0

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Build The Muscle Whistler

by Craig Sellen

There are 656 muscles in the human body and all of them generate a small voltage potential when they are activated. This voltage — which is called myoelectricity or EMG — is present on the surface of the skin surrounding the muscle. The detection of this signal is important in both clinical medicine and medical research. Page 42


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Personal Robotics
by Mike Keesling
A Look at Robotic Behavior
At the rate I have been adding motors, drivers, and sensors to my projects, I will be in a lot of trouble in only a few years. I have done 12 motored centipedes, 18 jointed hexapods, and I am planning a robotic ecosystem with 30 robots with three motors each. Of course, at some point, this has to stop; I’ll need to scale back. Page 0

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The Design Cycle
by Peter Best
A Specialized DSP-Equipped Microcontroller ...
To perform DSP (Digital Signal Processing) tasks, you’ll need a bit more than just math and some fancy programming. DSP hardware traditionally came (and still can come) as a dedicated DSP IC, which requires special compilers and debugging tools. Page 0

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Just for Starters
by Mark Balch
Applying PWM — A Light Dimmer
Varying the power delivered to DC loads is a common problem in projects — such as robotics — where motors and lights require more control than simply on/off. Rapidly changing supply voltage to a DC motor or light is often impractical or disallowed by the electrical characteristics of the load. Page 0

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Open Communication
by Louis E. Frenzel
Back to the Bands
A weekend project to return to amateur radio with kits — it doesn’t get any better than this. Page 0

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Stamp Applications
by Jon Williams
BASIC Stamp Accessories Made Easier
Not long after the BASIC Stamp started a revolution in small microcontrollers, Scott Edwards started what turned into a cottage industry: serial accessories. Thanks to the new (and free!) SX/B compiler from Parallax, you, too, can join the serial accessory club ... and do so much more. Page 0

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In The Trenches
by Gerard Fonte
How to Make Projects That Work
There is probably nothing more frustrating, annoying, and embarrassing than spending a week on a "simple" project that doesn't work, only to have someone else do it in an afternoon and with a handful of junk-box parts. What makes some people better at getting things to work properly? In this special all-projects issue, we'll look at ways to make you more successful in making projects that work. Page 0

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by TJ Byers
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. Page 0

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