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August 2014

Nuts and Volts Magazine

Please Welcome ISaAC To The Stage; A New Add-On Adapter For The Raspberry Pi

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Features

ISaAC — A New Add-on Adapter for the Raspberry Pi

Enhance your RaspPi projects and add functionality with this ultimate interface board.



Projects

Frequency Counters and Retrofitting

Even the lowest grade frequency counters are often the most accurate instruments on the bench. Here, we'll describe their general principles of operation, construction and retrofitting into existing equipment, all the way to a full blown universal counter.


The Versatile Wireless Doorbell

Advances in technology often decrease price points, but not usefulness. See how to turn one circuit into several devices that most homeowners would find invaluable.


USB, LEDs, and Some Sensors

Turning LEDs on and off is fun and all, but why not add a sensor or two that would be useful for something other than the usual light show?



Columns

PICAXE Primer
by Ron Hackett
Build an Auto-Off Continuity Tester
Follow through a few experiments to construct a PICAXE-based auto-off continuity tester that will help save money on batteries.

The Design Cycle
by Fred Eady
Finishing Touches
We have finally eaten most all of that elephant we started cooking a couple of issues back. This month, we will add touch and audio routines to our FT800 driver. By the time you have digested this edition of Design Cycle, you will be able to command the FT800 to draw buttons and text, detect touch events, and generate audio.

Smiley’s Workshop
by Joe Pardue
The Arduino Classroom. Arduino 101/Chapter 8: Displaying Information.
Learn a bunch while blinking a lot of LEDs, then see how to make the world’s smallest moving message sign with seven-segment displays.

Open Communication
by Louis E. Frenzel
White Space Wireless Ready for New Services
It is no secret that we are running out of spectrum space for certain new and/or improved wireless services. One potential solution for this can be found in the white space spectrum.