[sdiy] Real slow LFO ICs?

[Troy Sheets]

Actually, a microcontroller would work great, but I want to keep it
an all-analog visual effects project... :)

-troy

On Tue, Oct 28, 2003 at 10:06:29AM +1100, Paul Perry wrote:
> At 10:14 PM 27/10/03 +0100, Achim. wrote:
> >> Hi, I am looking for a super-simple LFO IC... or multiple LFOs in a
> >> single package.  sine or saw output will be fine, must be able to run
> >> in the sub-1hz range.
> >A microcontroller with PWM ouput or a built-in DAC would probably be 
> >the easiest solution. In both cases you can achieve higher resolution 
> >than the typical 8..10bit by using multiple outputs.
> 
> Depending what you want to do with the LFO.... a very slowly stepped LFO 
> is very noticeable indeed. This is just about the only thing I wouldn't
> want to do with a micro, but I'd like to hear more opinions.
> The 3080 is good, but the range is (in practice) only about 1000 to 1.
> (was there a work-around for that? Transistor as timing resistor?)
> 
> paul perry Melbourne Australia
> 

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