10 TechKnowledgey 2009
Events, Advances, and News
Topics covered include tapping tree power,
a dual monitor laptop, subminiature
pushbutton switch, plus other stuff.
14 The Spin Zone
Adventures in Propeller Programming
Do it up with DMX.
20 Near Space
Approaching the Final Frontier
A near space environment chamber update.
Projects & Features
34 Computer to Computer Link
Using Laser Pointers
Establish serial communications between
computers or microcontrollers over
low power laser beams.
■By Ed Ringel
40 Phone Ring-A-Thing Control
Use your cell phone and this device as a
receiver/decoder system to perform
■By John F. Mastromoro
44 Experiments with
Learn the fundamentals of renewable
energy through this educational series.
This month: Build a Double Wide Sun Tracker.
■ By John Gavlik
Reader Questions Answered Here
Fish feeder project, ferrite core search,
flashing light alarm, plus more.
49 The Design Cycle
Advanced Techniques for Design Engineers
Take an IO-Warrior into your next
56 Getting Started With PICs
The Latest in Programming Microcontrollers
61 Personal Robotics
Understanding, Designing &
Persistence pays off when dealing
with problematic projects.
67 Smiley’s Workshop
An AVR C Programming Series
Typing up some loose Arduino ends.
6 November 2009
32 NEW PRODUCTS
72 NV WEBSTORE
78 TECH FORUM
81 AD INDEX
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