Lunetta and WSG Mashup

monokinetic · Joined: Aug 01, 2006 Posts: 100 Location: prague

Hi all,
I’m pretty sure this isn’t my first post at EM, but memory fails me at the moment Smile

I’m planning in the distant future a “big” modular using all of the fantastic resources here, but unfortunately I don’t have so much time currently. However, due to the relative simplicity of the Lunetta circuits my interest has been fired again… plus whenever I see Tom Bugs stuff I go all green with envy!

I have been lurking and tried to read up all I can before harassing you all with some questions/ideas:

As mentioned I have been looking at bugbrands amazing modules. It seems that he has two types of sockets, which I presume are split into control/clock signals and audio signals. Is this correct? Is there any risk cross connecting the two types of connector?

I am half way through building a WSG on stripboard (thanks Unkle Krunkus!). I realised that it is based around lots of similar ideas as some of the circuits here on the Lunetta board (which is why I hope this is the right place to ask this…). I’m thinking about patching out some of the elements of the WSG to my front panel to give more possibilities crossing elements with the Lunetta circuits. Do you think this is worthwhile? If so, any tips where to patch out from?

I’m currently planning a minimodular extension to the WSG with Lunetta circuits. After a lot of reading through this forum I think I will start to experiment with the bugbrand 4X Oscillator and XNOR (sound generation) and a basic sequencer from the milkcrate site. Do you think this is enough to get started with? Any suggestions for other simple modules to compliment this basic set up?

Coming from a more traditional modular synth background, I’m not sure how I use the shift registers etc. Could anyone explain how I use these in a patch?

Thanks in advance for any help/comments

Dave mK

RF · Posted: Wed Jul 23, 2008 5:41 am Post subject:

Hi Dave
I want to encourage you to build up a couple circuits and just 'have at it'.
Yes - Those circuits you mention are enough to get started.

Last night I was playing around with the Bugs 4*osc and 4015 shift register on perfboard with aligator clips - just those two 'modules' are capable of a great variety of odd sound - and apparently quite tolerant. I was cross connecting and mixing audio rate signals and clocking signals and ins and outs with reckless abandon and didn't manage to fry any chips. Laughing

It really got crazy when I 'starved' the osc. of power (as mentioned elsewhere in this forum) - it does some really great, unusual things.
This stuff is just fun.

Lots from a completed WSG could be patched in and out if you want to, but after playing with these two chips last night I'm just going to keep at the 'single chip to patch points' concept for my Lunetta.

The shift register creates patterns, divisions, audio and/or clocking signals based on what signals (audio rate/clock rate or both) you input. It's kind of an unruly sequencer. Way cool.

Good luck

bruce

Pehr · Posted: Wed Jul 23, 2008 6:19 am Post subject:

The WSG is more or less a lunetta put together ina box, with a filter and no patchpoints. It actually includes a gated and voltage controlled 40106 oscillator (weird osc) Very Happy

Good patchpoints are:
WK2A, out
ZA1A, out
leg 1 of R5, out
1M to Odd, in
100kOhm to the base of Q1, in
1N4148 anode to leg 1 of R14, in

I think that the filter could be made voltage controlled somehow...

monokinetic · Joined: Aug 01, 2006 Posts: 100 Location: prague

monokinetic · Joined: Aug 01, 2006 Posts: 100 Location: prague

Hi Pehr,
thanks for taking the time to reply...

Pehr · Posted: Wed Jul 23, 2008 10:00 am Post subject:

Yes, vactrol is possible: http://mypeoplepc.com/members/scottnoanh/birthofasynth/id16.html

But I also think it can be done with a JFET or NPN transistor...

http://www.musicfromouterspace.com/analogsynth/WP20/WP20_PG16.html

idea: http://www.analog-monster.de/simple_vca_circuit.jpg

scriptstyle · Joined: Jan 22, 2008 Posts: 250 Location: nj

as of right now i have 1/4 not even really finished lunetta:
556 dual osc with cv ins and starve
shift register x2
baby 10 seq
and a 40106 osc project on breadboard
wow dosnt look like much in type? but it sounds awesome!! i also built a wsg and it hasn't been put into a proper case maybe it will become part of my lunetta someday?

i really should get motivated to finish this up!!