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Nuts and Volts Magazine - February 2012

The Battery That Wouldn’t Die


Features

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The Edison Cell
by Walter Noon
Rediscover the secrets of a 100 year old “green” battery whose time may finally have come. Page 38

Projects

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Channel Surfing With An Arduino
Arduino,
by William Baird

The Arduino is perfectly suited to emulate the IR remote controls associated with many modern appliances. If your TV recorder and tuner are different devices, this will allow you to change channels between scheduled recordings on whatever schedule suits you. Page 32

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Creating a Virtual Serial Port With the 32-Bit Micro Experimenter
Computer Related,
by Thomas Kibalo

Need a serial port but don’t have one on your computer? No problem! We’ll show you how to use your Experimenter to provide virtual serial communications. Page 44

Columns

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Q&A
by Russell Kincaid
Q & A
Help with a random number generator, battery tester, LED dimmer, and a nonsense circuit are just some of the topics covered in this month’s column. Page 0

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Techknowledgey
by Jeff Eckert
TechKnowledgey 2012
Read about a battery that offers a 25 year operating life, Clouds with ears, and seeing sound, to name a few. Plus, Pong turns 40. Page 10

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PICAXE Primer
by Ron Hackett
PICAXE Primer
Constructing a two-digit seven segment LED project board. Page 14

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The Design Cycle
by Fred Eady
The Design Cycle
CLC Culture. Page 52

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Smiley’s Workshop
by Joe Pardue
Smileys Workshop: An AVR C Programming Series (Part 43)
Breadboard LCD Navigator Part 2: The Navigator Buttons. Page 59

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Open Communication
by Louis E. Frenzel
Open Communication
Comm Kits — A radio kit is a great way to get familiar with electronics and communications. Page 68

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Fundamentals For Beginners
Build a Moisture Detector
If you’d like to test plant soil for moisture, you can use this circuit to do so. The more moisture there is, the faster the LED will blink. Page 76