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What Is 4G? Do I Need It? Do I Care? How Does It Work?
Cracking PDF File Passwords With a BeagleBone Board
Computer Related,
by Nuno Alves
Instead of installing third-party software to crack passwords of encrypted files, try this inexpensive off-the-shelf embedded system that you don’t have to connect to your computer. Page 34
Turn Your iPhone into a Plant Moisture Sensor
Wireless,
by Mike Westerfield
Convert an iPhone or iPad into a quadcorder and use it to “scan” for intel, like how wet or dry your plant soil is. Page 42
PICAXE Primer
by Ron Hackett
PICAXE Primer
Interfacing the DS18B20 Digital Thermometer. Page
Techknowledgey
by Jeff Eckert
TechKnowledgey 2012
This month, there’s a spotlight on bacteria, a scanner that features Wi-Fi memory, a big telescope for the big bang, plus some other interesting stuff. Page 10
Q&A
by Russell Kincaid
Q & A
Solar converters, speaker protectors, and transformerless power supplies are just some of the topics discussed this time. Page 24
Smiley’s Workshop
by Joe Pardue
Smileys Workshop: An AVR C Programming Series (Part 47)
Persistence of Vision Wand. Page 52
Open Communication
by Louis E. Frenzel
Open Communication
What is 4G Wireless? 3G/4G ... Does it really matter? Page 60
The Design Cycle
by Fred Eady
The Design Cycle
Some IEEE 802.15.4 Transceiver Magic. Page 68
Fundamentals For Beginners
Build a Morse Code Oscillator
Try your hand at an “old school” communications method that is still practiced today. Page 76
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