Filter with very slow LFO

[heuermh]

When running my guitar through my modular synthesizer I like to use a filter driven by a very slow LFO, specifically the nonlinearcircuits sloth

http://nonlinearcircuits.blogspot.com/2014/09/sloth-chaos.html

The sloth LFO is very slow and is chaotic.

I wonder, might anyone like to help me adapt this for guitar pedal usage and then use it to modulate a simple LPF or HPF?

Another interesting idea would be to use it to modulate the bias in a fuzz that is very sensitive to mis-biasing.

[andrea83]

Hi! It's an interesting project and it looks like it's an easy circuit. Do you have the schematic?

[heuermh]

There is one in the original build docs, not sure it would be appropriate to post here.  The circuit would need to be adapted from -12v/+12v eurorack power supply to 0v/+9v, and then I guess the output would have to be DC offset and run into a vactrol or LED/LDR.

[andrea83]

sorry maybe it's me but I can't find the build docs..

[lborl]

It's freely hosted on the designer's linked site so I'll take the risk of being a bastard and share it:

http://www.sdiy.org/pinky/data/SLOTH%20schematic%20and%20BOM.pdf

[andrea83]

oh thank you!