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Mini-Modules : Minimoog DIY clone on its way.
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Author Mini-Modules : Minimoog DIY clone on its way.
jdelgoulet
Learning to Wiggle


Joined: 05 Jun 2012
Last Visit: 26 Jan 2015

Posts: 36
Location: Brive , France

PostPosted: Tue Dec 02, 2014 8:11 am    Post subject: Mini-Modules : Minimoog DIY clone on its way. Reply with quote Add User to Ignore List

Hello everyone !

My name is Julien Delgoulet, I'm a synth DIY passionate from a little town in France called Brive-La-gaillarde. I usually spend my time lurking on muff, matrixsynth , electro-music.com when I'm not repairing,
moding or designing synth related circuits.
For quite a long time, I dream to own a Minimoog but never had the cash to buy one ...
About a year ago, a friend of mine get one and, after playing a few times with it, I decided to give it a go. (By that time, I did not know that this project will fill all my nights and week-ends ... fortunatly I have a
wonderfull wife love )
The initial target was to make an exact replica but finally ends up with what I call "Mini-modules" (Think ARP like sub-modules for Filter, VCO etc) for any format : eurorack / Moog 5U, you name it. Also, they could fit behind a "real minimoog sized panel".

All the design are exact replica of the Minimoog rev 2.0 (the one based on CA3046 expo converters) and are all using thru-whole components (excepted a few components that only exist in SMD packages)

So, let me introduce you the idea of "Mini-modules" and the control boards that actually "activate" them.

There will be 6 "Mini-modules":

- VCO
- VCA/Preamp
- VCF
- VCF Env
- VCA Env
- Noise/mod-mix/glide

There will be also 7 "Controller boards" :
- One for each mini-module (so you get an eurorack version of each for example).
- Another, my favorite one, which is 60HP eurorack version where 3VCOs, VCF etc plug into. ( I choose 60 HP so that if you have a 84HP case, you still have some room for a real LFO, a midi/CV interface etc)


At the moment, everything works great, I'm finalizing the "Mini-modules" and the 60 HP Controller Board to hold them.
To give you an idea of the progress made so far , here are some pictures of old prototypes and "Mini-modules" eagle boards. More to come in a few days...

As you might except, this will be a DIY project and I will propose PCBs, BOMs and schematics so that "everyone" can build his own Mini ;-)

I'm so thrilled to expose this project to you guys ,particularly on muff (where I've been more than a lurker and not very helpfull to the communtiy) and
hope you are excited as I am about this project now it is not "secret" anymore w00t

Julien














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Starspawn
Common Wiggler


Joined: 06 Mar 2012
Last Visit: 01 Feb 2015

Posts: 200
Location: Norway

PostPosted: Tue Dec 02, 2014 8:21 am    Post subject: Reply with quote Add User to Ignore List

Very nice!
Whats the rare parts count like?
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horstronic
Ultra Wiggler


Joined: 08 Aug 2013
Last Visit: 31 Jan 2015

Posts: 765
Location: Germany

PostPosted: Tue Dec 02, 2014 8:23 am    Post subject: Reply with quote Add User to Ignore List

Wow, that's a big project! You must have spent a lot of time with it.
As you say these are exact replicas: Are there any hard to find parts in it?
That would probably scare away a lot of people.

Nice one, keep it up thumbs up

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horstronic
Ultra Wiggler


Joined: 08 Aug 2013
Last Visit: 31 Jan 2015

Posts: 765
Location: Germany

PostPosted: Tue Dec 02, 2014 8:24 am    Post subject: Reply with quote Add User to Ignore List

2 minutes to late hihi
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ablearcher
Common Wiggler


Joined: 26 Dec 2013
Last Visit: 01 Feb 2015

Posts: 240
Location: Tucson

PostPosted: Tue Dec 02, 2014 8:35 am    Post subject: Reply with quote Add User to Ignore List

Whole minimoog in 60 hp? That is tight! Can you still wiggle on that? Also, impressive! Can't wait to hear the results.
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jdelgoulet
Learning to Wiggle


Joined: 05 Jun 2012
Last Visit: 26 Jan 2015

Posts: 36
Location: Brive , France

PostPosted: Tue Dec 02, 2014 8:39 am    Post subject: Reply with quote Add User to Ignore List

Rare parts are mainly 2N4058/2N4402 which could be replaced if one does not care about "an exact replica". During development, I tried replacement parts and, to my ear, there was no difference.
E402 has been replaced, like on some Minimoog series, with 2N3954.
Also, TIS97 are hard to find parts but I have a very, very nice popular replacement part which is, on paper (datasheet) and to my hears, the same ;-)

I might offer "rare parts" packages or have someone deal with that for me.
At the moment, the target is : finish the mini-modules, the 60HP board and give you a taste of how it sounds.

PS : The idea of doing Mini-Modules was also a way for DIYers to easily debug and get help from others to track down what is wrong in a specific board.
A Mini for everyone ! nanners Rockin' Banana!
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nicoodiy
Learning to Wiggle


Joined: 24 Aug 2013
Last Visit: 02 Dec 2014

Posts: 5

PostPosted: Tue Dec 02, 2014 9:18 am    Post subject: Reply with quote Add User to Ignore List

Un Français!!

Quote:
As you might except, this will be a DIY project and I will propose PCBs, BOMs and schematics so that "everyone" can build his own Mini ;-)


Thanks to you for your open-source project!! applause
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jdelgoulet
Learning to Wiggle


Joined: 05 Jun 2012
Last Visit: 26 Jan 2015

Posts: 36
Location: Brive , France

PostPosted: Tue Dec 02, 2014 9:25 am    Post subject: Reply with quote Add User to Ignore List

ablearcher wrote:
Whole minimoog in 60 hp? That is tight! Can you still wiggle on that? Also, impressive! Can't wait to hear the results.

Yes it is but not that bad actually. Spacing between pots, without knobs, is about 3 cm (1.15 inch).
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jdelgoulet
Learning to Wiggle


Joined: 05 Jun 2012
Last Visit: 26 Jan 2015

Posts: 36
Location: Brive , France

PostPosted: Tue Dec 02, 2014 9:29 am    Post subject: Reply with quote Add User to Ignore List

And you have more options like variable PW and PWM inputs (don't know why this was not "standard" back in the days), dedicated CV in for each VCO (crazy modulations or paraphonic 3 voices Mini), buffered ADSs outputs to play with etc
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seanpark
Wiggling with Experience


Joined: 30 Aug 2012
Last Visit: 01 Feb 2015

Posts: 479
Location: Nashville

PostPosted: Tue Dec 02, 2014 10:49 am    Post subject: Reply with quote Add User to Ignore List

This looks really cool! I've always wanted to build a mini.
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Isaiah
Super Deluxe Wiggler


Joined: 02 Jun 2010
Last Visit: 01 Feb 2015

Posts: 1307

PostPosted: Tue Dec 02, 2014 11:20 am    Post subject: Reply with quote Add User to Ignore List

Oh, goodness...
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trialanderror
Learning to Wiggle


Joined: 11 Sep 2014
Last Visit: 04 Jan 2015
Posts: 16
Location: Germany

PostPosted: Tue Dec 02, 2014 11:27 am    Post subject: Reply with quote Add User to Ignore List

That's an impressive and good looking project!
I'll definitely keep an eye on this.

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mush
Common Wiggler


Joined: 28 Sep 2010
Last Visit: 30 Jan 2015

Posts: 168
Location: Copenhagen, Denmark

PostPosted: Tue Dec 02, 2014 11:33 am    Post subject: Reply with quote Add User to Ignore List

May I say that I love you?!
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Morley
Super Deluxe Wiggler


Joined: 15 Oct 2008
Last Visit: 01 Feb 2015

Posts: 3030
Location: Belgium

PostPosted: Tue Dec 02, 2014 11:34 am    Post subject: Reply with quote Add User to Ignore List

Nice!
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latigid on
Wiggling with Experience


Joined: 25 Oct 2013
Last Visit: 01 Feb 2015

Posts: 264

PostPosted: Tue Dec 02, 2014 11:38 am    Post subject: Reply with quote Add User to Ignore List

Yeah, but does it sound like a Mini?

(hides)
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Moog$FooL$
Broke Dick Dog


Joined: 03 Jun 2008
Last Visit: 01 Feb 2015

Posts: 1467
Location: Vancouver, BC.

PostPosted: Tue Dec 02, 2014 11:45 am    Post subject: Reply with quote Add User to Ignore List

nice..... good luck with this.

thumbs up

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negativspace
Manhattan Analog


Joined: 13 Apr 2010
Last Visit: 01 Feb 2015

Posts: 5592
Location: Manhattan, KS

PostPosted: Tue Dec 02, 2014 11:57 am    Post subject: Reply with quote Add User to Ignore List

Definitely interested. w00t
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ThecureForSin
Common Wiggler


Joined: 20 Oct 2010
Last Visit: 31 Jan 2015

Posts: 241
Location: Buffalo, NY

PostPosted: Tue Dec 02, 2014 12:08 pm    Post subject: Reply with quote Add User to Ignore List

You can call me INTERESTED!
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gbiz
Common Wiggler


Joined: 07 May 2013
Last Visit: 01 Feb 2015

Posts: 109
Location: Sussex, UK

PostPosted: Tue Dec 02, 2014 12:08 pm    Post subject: Reply with quote Add User to Ignore List

Wow. Nice work Julien. applause
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Sparky
Learning to Wiggle


Joined: 02 Sep 2014
Last Visit: 29 Jan 2015
Posts: 30
Location: California, USA

PostPosted: Tue Dec 02, 2014 12:21 pm    Post subject: Reply with quote Add User to Ignore List

Wow, this looks good. I'm interested too.
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