[sdiy] L(cheapo)FO

[Michael Ruberto]

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