homebrew vactrols

[Hallgeir Helland]

I owned a Lovetone Meatball filter pedal for about two years.
(recently sold it.) This filter pedal uses two LEDs that illuminate
one LDR each, but no optical isolation is used. So when I open up 
the case, the frequency of the filter changes. And when feeling
funky, I could wave a flashlight across the PCB area where the
LDRs were mounted, and the light would go through the PCB and
make a nice "quaka-owuicka" sound, if you take my meaning.

Cheap solution in an expensive pedal. (£199 direct price)

Hallgeir

BTW: those LEDs were green.
-- 
HELLAND MUSIKK TEKNOLOGI
-=  Hallgeir Helland  =-
hhelland at mailandnews.com