[NJARC] Star trek theremin goes arduino

[Joe Giliberti]

Assuming you are referring to the opening theme of the original Star Trek
series, that was done by a vocalist, soprano Loulie Jean Norman.

On Thu, Apr 5, 2012 at 3:41 PM, Thomas Lee <thomas_v_lee at hotmail.com> wrote:

> Just remember
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>
> _________________________________________________________
>
> Quick and easy Arduino-powered theremin
>
>
>          by Brian Benchoff
>
>
>
>
>
>
> [Martin] sent in a great guide
>  to a simple Arduino based theremin. It's a very small build - just a
> single common IC and some passive components - and easy enough to build
> in an afternoon.
> The
>  theremin is based on a simple LC oscillator built around a 7400 quad
> NAND gate IC, a wire antenna, and a few caps and resistors. When a hand
> moves closer to the antenna, the frequency of the oscillator increases;
> when a hand moves away, the frequency decreases. On the software side,
> the oscillator is connected to the internal hardware counter of the
> Arduino. Every time there's a change in the voltage output by the
> oscillator (all the time, varying slightly with the distance from a hand
>  to the antenna), the counter increases by one. This counter is tallied
> up over 1/10th of a second, and the distance from the instrumentalist to
>  the theremin can be determined. From there, it's just outputting a
> frequency to a speaker.
> All
>  the code, schematics, and board layouts are available on [Martin]'s
> guide, and most of our readers probably have the parts to build this
> lying around their workbench. You can check out a video of [Martin]'s
> theremin in action on his guide.
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-- 
Joseph Giliberti
Director of Buildings, Grounds and Facilities
InfoAge Science / History Learning Center and Museum
Get more information at http://www.infoage.org