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| NV March 2009 |
Features
Making the DEFCON 16 Badge
by Joe Grand
Joe highlights his design process and the problems he encountered during the creation of his most recent DEFCON badge. Page 54
Projects
Inductive Proximity Sensors
Circuits
by Beau Schwabe
A series resonant circuit built on a Propeller demo board is utilized in this build to detect the proximity of metallic objects. Page 36
Makin’ MIDI with mistraIXG: Part 2
Audio/Video
by Steve Russell
This time, we look under the hood of last month's design to see how the mistaIXG hardware and software work together. Page 40
Wind Your Own Transformers and Build a DC-to-DC Converter
Nuts & Volts Special
by Jim Stewart
Use this board as a platform for your switch-mode projects and experiment with winding transformers. Page 46
Columns
Techknowledgey
by Jeff Eckert
Techknowledgey 2009
Topics covered include a dual screen laptop, phone watch, motor sets RPM record, plus more. Page 12
Stamp Applications
by Jon Williams
Creating Time-Lapse Video
In the video age, time-lapse movies are not easily produced with a video camera, but as my friend (and VFX wizard) John demonstrated, one can easily create a time-lapse movie with a digital still camera and video editing software. Page 16
Q&A
by Russell Kincaid
Q & A
Measuring energy use, more on oscillators, flat panel TVs, plus more. Page 28
The Design Cycle
by Fred Eady
Demystifying USB To Serial
It's time to stop talking and start soldering. This month, you have your choice of USB projects. Page 60
Smiley’s Workshop
by Joe Pardue
Smileys Workshop: An AVR C Programming Series (Part 8)
Interrupts, I/O Registers, and the Butterfly Joystick. Page 67
Personal Robotics
by Vern Graner
Robotics on a Budget
Most towns have a thrift store or other shops that recycle and resell clothes, toys, household wares, and the like. In many cases, you'll find these stores carry lots of useful electronics that can be picked up for a song. Page 71
Near Space
by L. Paul Verhage
BalloonSat Minis
BalloonSat Minis: One small step for a PICAXE, One giant leap for a BalloonSat Design. Page 76
Getting Started With PICS
by Chuck Hellebuyck
SPI Communication
In my January column, I described the I2C form of serial communication. This month, I am covering its cousin — the Serial Peripheral Interface or SPI communication. Page 82
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