September 2004 Issue

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PROJECTS
SPIN A MOTOR WITH YOUR COFFEE MUG
Use that excess heat!
by Dr. Ralph Lorenz
THE ELECTRONIC SNIFFER
An electronic nose for detecting chemicals.
by Ron Newton
Related Info - Parts List Inside
THE ENIGMA MACHINE, PART 4
De-bunking Kirlian photography.
by Gerard Fonte
FLOATING LIGHT SHOW
A fun summer project to jazz up your swimming pool.
by Michael Simpson
Related Info
FEATURES
TETSUJIN 2004
The cutting edge event sponsored by our sister publication
SERVO Magazine.
THE DIGITAL CONSUMER TECHNOLOGY HANDBOOK
Book review.
by Ed Driscoll, Jr.
A NEW LIFE FOR LORAN — PART 2
Completing the conversion to solid-state amplifiers.
by Clifford Appel
HAM RADIO FOR DUMMIES
Another book review.
by Karl Lunt


COLUMNS
TECHKNOWLEDGEY 2004
Magnetic refrigeration; pirated software; and more.
JUST FOR STARTERS
Learn all about diodes.
MICRO MEMORIES
Shakey, an early robot.
LET’S GET TECHNICAL
Digital data compression.
Q&A
All about lightning; more 555 timer circuits; classic car voltage conversion; and more.
PERSONAL ROBOTICS
Hexapod hoedown!
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IN THE TRENCHES
For design engineers facing real world problems
This month: specifications.
STAMP APPLICATIONS
An active coffee stabilization system.
 Related Info
NEAR SPACE
Detecting cosmic rays.
Also: Winners of the Great Plains Super Launch are announced! Read More