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April 2012

Nuts and Volts Magazine

Direct Digital Synthesis

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Features

DDS and the Electronic Music Box

Make Music With Digitally Generated Analog Signals.


Return to Transistor Land

This article describes Keith’s process of designing a no-IC, high voltage power supply for his updated Nixie-Transistor clock.


Add USB Devices to Your Projects

Data storage, user input, printing, audio, video, and network communications are just a few of the functions that off-the-shelf USB devices can perform. Learn how to include USB devices in your creations with the BeagleBoard-xM.


Using Color Graphics and Widgets with the 32-bit Micro Experimenter

Discover and harness the power of widgets to use on your Experimenter board.



Columns

TechKnowledgey
by Jeff Eckert
TechKnowledgey 2012
This month, read about an alarm that combines light and sound, the magnetic memory limit being attained, a tablet to take without water, plus some other interesting stuff.

PICAXE Primer
by Ron Hackett
PICAXE Primer
Developing software for the LED-2x7 project board.

Q&A
by Russell Kincaid
Q & A
Get answers about LED flasher circuits, lighthouse lamps, PCMCIA memory cards, and multi-station intercoms.

Smiley’s Workshop
by Joe Pardue
Smiley’s Workshop 45: Chaser Light Marquee
C Pointers, Arrays, and Structures — Part 2-45: Chaser Light Marquee

Fundamentals For Beginners
FUNdamentals For Beginners
Build Railroad Lights.

Open Communication
by Louis E. Frenzel
Open Communication
How to get your ham license.