I enthusiatically second the recommendation of the 149-1. it's random without being purely entropic (as S&H from white noise is).
I also recommend getting the 149-2 sub-module as well. i have the individual outs from the 149-2 going into the individual cv inputs of the lower row of steps on the 155 sequencer. then you clock the upper section of the 149-1 with a slow trigger from a clock divider, thus each sequencer cycle or x number of cycles the sequence itself will change semi-randomly. it can be a little tricky to tune in a sequence on the 155, since the lower row was intended for cv modulation of steps, not note generation (and the outs from the 149-2 only generate on/off cv signals), but the whole point of modular synthesis is the ability to utterly disregard what something is "intended to do" ;-)

Be Seeing You!

chris



________________________________
From: achtung_999 < heinrich.himmelwasser@... >
To: Doepfer_a100@yahoogroups.com
Sent: Tuesday, August 28, 2012 11:30 AM
Subject: Re: 1 Re: Self generating patch advice

Hi Alan!
I use shitloads of Sample & Holds in tandem with various LFOs and several
A118s to generate random values.
And at least one A149-1 is very useful.
This is one of my patches from my setup: https://vimeo.com/7074110

grtz

Ernst

[Non-text portions of this message have been removed]