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On Tue, Apr 03, 2007 at 03:58:48PM +0200, Robin Gareus wrote:
>
>
> listreader wrote:
> > Robin Gareus wrote:
> >> listreader wrote:
> >>> [..]
> >>> Whats good software in linux to generate certain frequencies?
> >>
> >> judging from your motivation I can't say if it's /good software/, but
> >> "xmms" is avail. for many linux-distros:
> >> [..]
> >
> > My motivation?! What? I didn't say anything about why I wanted to copy
> > that device. I think it's a cool exercise.
>
> sorry, if my comment was a ambiguous. If you've got some more time to
> exercise, it's easy to do a hardware implementation - it's called
> "astable multivibrator" take a battery, two Transistors a Cap and few
> Resistors,... - eg. http://en.wikipedia.org/wiki/Multivibrator - for a
> more professional approach, follow the NE555 IC idea. radio-shack sells
> those..
>
I had good luck using Schmidt triggers to make quick-and-dirty square-wave oscillators for testing purposes:
http://en.wikipedia.org/wiki/Schmitt_trigger
Very cheap and simple: one chip, a resistor, and a cap, IIRC.
- -ken
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Received on Wed Apr 4 00:15:02 2007
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