[sdiy] LFO through PWM

[Derek Holzer]

Hi Mikhail,

the bits are fine, but you'll need to use something to smooth the 
Arduino voltage output, otherwise you'll hear the PWM frequency. I use a 
slew limiter on the lowest setting, which unfortunately makes the 
vertical ramps of square and sawtooth shapes less sharp. The slew 
limiter I use is the "dual lag generator" from Harry Bissel, you can 
find schemos on the web. Also check the thread "smoothing out PWM CV" 
which I started here a few months back for some other suggestions.

best!
D.

Mikhail Novikov wrote:

> I want to build a complex Arduino based LFO. But Arduino PWM resolution 
> is just 8 bit, so I wonder if that would be enough for most CV 
> applications.

-- 
derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
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