Projects & Features
31 Build the Solar Sequencer
This innovative system lets you charge
multiple batteries of different sizes and
capacities while keeping them isolated from
each other ... all from the power of the sun.
■ By John Guyer
36 Build the Pi Scrolling Display
This versatile display lets you have your pi and
see it, too! With 15 available digits, you can
also use it to create your own desktop
National Debt clock. (Of course, that may make
you lose your appetite.)
■ By Dan Gravatt
42 Streamline Your Home Studio
With a Sound Card Switcher
Get to the business of making music instead of
messing with cords with this extremely useful
and simple device. Makes a great beginner’s
■ By Thomas Henry
46 Upgrade Your 16-bit Micro
Experimenter to 32-bit for
16x2 Processing Power
With Microchip’s PIC32MX2/MX1 chip and
the new MPLAB X IDE and free PIC32-bit
C compiler, you can easily transition your
16-bit Experimenter to 32-bit processing.
■ By Thomas Kibalo
10 TechKnowledgey 2012
Events, Advances, and News
Read about the world’s largest digital camera,
gigabit Wi-Fi, digital drinking, and the death of an
industry pioneer ... plus some other interesting stuff.
14 The Spin Zone
Adventures in Propeller Programming
Track ’em Danno!
22 Q & A
Reader Questions Answered Here
Answers to questions on three-phase motor control,
digital clocks, and multi-input A/V switches are some
of the topics covered this month.
54 Smiley’s Workshop
Programming • Hardware • Projects
It’s About Time.
68 Near Space
Approaching the Final Frontier
A New BalloonSat Airframe Design.
09 READER FEEDBACK
28 NEW PRODUCTS
FUNdamentals For Beginners
76 Build a Screaming Box
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