Little Phatty with 3 oscillators

The Moog Forum Little Phatty & Slim Phatty Forum
1

Hello everyone,

I built a VCO and ran it through my LP.

This is what I got.

http://www.youtube.com/watch?v=tru5pMNLt5g

Thanks for watching!

2

Cool sound. It’s hard to see on the breadboard (and you don’t say much) but there’s a little black rectangle. Is that a 555 based oscillator?

3

That sounds really good. I’d like to hear more about the details of the project.

4

Thanks. Yes, it is a 555 timer IC. I started out with a free running multivibrator and changed the capacitor from a 1uF to a 470uF; I put a 5Kohm slide pot in between the discharge and threshold legs parallel with 2 470 Ohm resistors and a 1K Ohm resistor. These resistors were in series. I put a 10K ohm slide from the reset leg to discharge in parallel with a 1K ohm resistor. I will make a schematic and put it up.

Thanks again.

5

Thanks.

It is a 555 timer IC. I started out with a free running multivibrator and changed the capacitor from a 1uF to a 470uF; I put a 5Kohm slide pot in between the discharge and threshold legs parallel with 2 470 Ohm resistors and a 1K Ohm resistor. These resistors were in series. I put a 10K ohm slide from the reset leg to discharge in parallel with a 1K ohm resistor. I got the idea to run it through my LP and it turned out to be a nice sound.