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T & L Publications, Inc > Back Issues > 2012 > NV May 2012

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NV May 2012

Features

Electronic Schematic Diagrams for Experimenters and Technicians
by David Herres
Read about some of the options you have to create your own professional looking diagrams. Page 46

Projects

Build the Poor Man’s Seismograph
Nuts & Volts Special
Personally, I have been using seismographs most of my life. I actually have three in my back garage. In this article, I will present an old school way of performing measurements with an updated, yet simple seismograph that can be used anywhere. Page 32

Build a Sound-Activated Laser Parking System
Nuts & Volts Special
by Paulo Oliveira
If you’d like to break free from your “hanging tennis ball” method of parking, check out this approach which utilizes two ordinary low power laser pointers. Page 40

Columns

Techknowledgey
by Jeff Eckert
TechKnowledgey 2012
This month, read about really twisted radio, no-compromise sound from your PC, a sonic screwdriver, plus some other interesting stuff. Page 10

The Spin Zone
by Jon Williams
The Spin Zone
Back to the Beginning. Page 14

Q&A
by Russell Kincaid
Q & A
AC ammeters, battery internal resistance, and transformerless power supplies are discussed this time. Page 24

The Design Cycle
by Fred Eady
The Design Cycle
Control Gadgets With Your Smart Phone. Page 52

Near Space
Near Space
Making One Camera Do the Work of Three. Page 58

Smiley’s Workshop
by Joe Pardue
Smileys Workshop: An AVR C Programming Series (Part 45)
Chaser Light Marquee — Part 2. Page 68

Fundamentals For Beginners
Build a Nose Beeper
With this circuit, when you touch your friend’s nose you can make the speaker sound. Page 76

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