[sdiy] L(cheapo)FO

[Steve Lenham]

Hi Michael,

Just wanted to say nice work - that's the sort of efficient, elegant design 
I really admire.

Cheers,

Steve L.

----- Original Message ----- 
From: "Michael Ruberto" <frankentron at hotmail.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, June 26, 2005 3:56 AM
Subject: [sdiy] L(cheapo)FO


> Got in some breadboard time today. Since both of my previous synths 
> started out with an LFO I felt my new one should too. My design goal was 
> to make it as cheap as possible and use only the small supply of parts I 
> had on hand. Unfortunately, I had to desolder many of the resistors from 
> scrap PCBs to avoid running to Radio Shack.
> Anyway, this design works pretty good and has decent range and features 
> considering the small parts count - just 1 IC and 2 transistors. The 
> outputs are sine, triangle, square, and saw up or down. I get roughly 7V 
> peak to peak from the triangle and saw outputs, 6 volts peak to peak from 
> the sine output and +5V from the square.
>
> http://frankentron.freezope.org/source/diy_blue/images/LFO1_rev1.gif
>
> Enjoy!
>
> M. A. Ruberto
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