AUGUST 2008
www.nutsvolts.com
Projects
38 MODEL TRAIN SWITCH CONTROL
VIA PC OR PIC
Either version of this control system
can easily replace your old manual
controllers, plus the circuits are
versatile enough to use in other
applications.
■ By Dan Gravatt
●●●● Advanced Level
44 AUDIO SPECTRUM
ANALYZER
The device described here is a
configurable audio spectrum
analyzer incorporating FFTs
and a graphical LCD. You’ll also
be able to vew audio signals
up to approximately 20 kHz.
(And who doesn’t need that?)
■ By Larry Cicchinelli
●●●● Advanced Level
Departments
08 DEVELOPING 66
PERSPECTIVES 86
10 READER FEEDBACK 88
34 NEW PRODUCTS 94
36 SHOWCASE 97
ELECTRO-NET
CLASSIFIEDS
NV WEBSTORE
TECH FORUM
AD INDEX
Page 38
Page 44
Be sure to check the Nuts & Volts website
for downloads that go along with these projects.
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6 August 2008
