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 Forum index » DIY Hardware and Software
Bananalogue VCS diy board set available
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Ilanode



Joined: Sep 14, 2007
Posts: 80
Location: Berlin/FRG

PostPosted: Thu Aug 21, 2008 4:34 am    Post subject: Reply with quote  Mark this post and the followings unread

That's sounds like the way to go, thanks!
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zthee



Joined: Feb 20, 2008
Posts: 414
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PostPosted: Sat Oct 04, 2008 2:53 am    Post subject: Reply with quote  Mark this post and the followings unread

Has anyone finished theirs yet?

I'm about to start with mine next week...
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janvanvolt



Joined: Nov 24, 2005
Posts: 285
Location: Mainz, Germany

PostPosted: Sat Oct 04, 2008 5:33 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'm halfway thru. Just bought missing parts today. Two questions came up:
- module works with 15V as well, right ?
- if i am using regular pots, which pins do i need to short with a SPST ? (i would assume :

12
34
56

pins 1/2 and 3/4 (or just 1 with 3 and 2 with 4)

also currently working on my MOTM frontpanel for this thingie.

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jnuaury



Joined: Feb 28, 2008
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PostPosted: Tue Oct 07, 2008 7:08 am    Post subject: Reply with quote  Mark this post and the followings unread

unit-sound wrote:

- module works with 15V as well, right ?


i assumed it was meant to run off 15....
and was hoping i wouldnt have too much trouble running it off twelve

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e-grad



Joined: Sep 12, 2008
Posts: 142
Location: Berlin

PostPosted: Tue Oct 07, 2008 7:41 am    Post subject: Reply with quote  Mark this post and the followings unread

Since it was available with Frac and Euro faceplates and having both Euro and Frac power connectors the module should run on both +/-12V and +/-15V.
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zthee



Joined: Feb 20, 2008
Posts: 414
Location: Stockholm

PostPosted: Wed Oct 29, 2008 1:01 am    Post subject: Reply with quote  Mark this post and the followings unread

Finished my set of boards yesterday - Now I just need to get pots and jacks and stuff and make a frontpanel out of paper and see if it all works as it should.

Any idea what the trim-pot adjusts? (I guess I'll find out once I start turning it..).
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e-grad



Joined: Sep 12, 2008
Posts: 142
Location: Berlin

PostPosted: Wed Oct 29, 2008 1:48 am    Post subject: Reply with quote  Mark this post and the followings unread

Congrats! My one still needs one (!) part and I'm lacking time to finish it.

I'm not good in electronics so I could be wrong: However, IIRC one of the add on boards can't work if it's populated according to it's imprints!

There are 2 links which connect the 3 jacks (VC Rise; VC Fall; VC Both) while VC Rise and Fall must not be connected. Thus I intend to leaf of the links and connect the Both jack to the switch contacts of the other 2 jacks mentioned. If I'm right the Both jack must not soldered onto the board.

Again, this is from memeory and not tested yet, however, I strongly advice you to give the add on board a thought before you make your connections. And, pls, report back your findings. Wink
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Sound



Joined: Jun 06, 2006
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PostPosted: Wed Oct 29, 2008 1:57 am    Post subject: Reply with quote  Mark this post and the followings unread

zthee wrote:

Any idea what the trim-pot adjusts? (I guess I'll find out once I start turning it..).


Hi the trimpot adjusts the amplitude of the output.

mines, that they are not DIY, the output is about 6,4 V the AC output as well the DC output.

Regards.
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helitron



Joined: Feb 27, 2008
Posts: 21
Location: vienna

PostPosted: Sun Dec 07, 2008 8:06 am    Post subject: Reply with quote  Mark this post and the followings unread

Sound wrote:
zthee wrote:

Any idea what the trim-pot adjusts? (I guess I'll find out once I start turning it..).


Hi the trimpot adjusts the amplitude of the output.

mines, that they are not DIY, the output is about 6,4 V the AC output as well the DC output.

Regards.


thanks for that!

anyone finsihed theirs? i just populated the board...
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helitron



Joined: Feb 27, 2008
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PostPosted: Sat Dec 13, 2008 3:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

so .. it's finsihed. It seems to work properly except that the rise poti does not change anything unless I plug a voltage source in the VC-rise input. Release works perfect.
it's a bit odd. since I could not figure out the problem I shorted V+ to the VC-rise socket, that sould do the trick unless somebody here has a clue what went wrong.

hel
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janvanvolt



Joined: Nov 24, 2005
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PostPosted: Sun Dec 14, 2008 8:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

Just finished mine (in MOTM Format), but too tired to put it into modular. Will test it tomorrow:

Posted Image, might have been reduced in size. Click Image to view fullscreen.

and sideview:

Posted Image, might have been reduced in size. Click Image to view fullscreen.

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creatorlars



Joined: Nov 26, 2007
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PostPosted: Mon Dec 15, 2008 10:33 am    Post subject: Reply with quote  Mark this post and the followings unread

Looks great! Was the panel made by frontpanel express? Let us know how it works... I am trying to design a 1U MOTM sized panel w/ 1/2" knobs and banana jacks for mine.
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janvanvolt



Joined: Nov 24, 2005
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PostPosted: Mon Dec 15, 2008 11:27 am    Post subject: Reply with quote  Mark this post and the followings unread

creatorlars wrote:
Looks great! Was the panel made by frontpanel express? Let us know how it works... I am trying to design a 1U MOTM sized panel w/ 1/2" knobs and banana jacks for mine.


Yes it is a frontpanel express file.

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sduck



Joined: Dec 16, 2007
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PostPosted: Mon Dec 15, 2008 6:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

Very nice! I've got to get rolling on this one - I've been sitting on 2 sets of pcb's for a while, and just got 2 more (in motm format). I'm hoping to find a way to squeeze 2 of them into a 2u panel - we'll see.
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Luka



Joined: Jun 29, 2007
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PostPosted: Mon Dec 15, 2008 7:23 pm    Post subject: Reply with quote  Mark this post and the followings unread

i just copied and squashed down the euro layout into a 2U panel sduck

but i think the fact that using banana plugs and low profile knobs helps me make it work perhaps you 1/4' jack and motm knob kids will need to be a bit more creative to make it fit.

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janvanvolt



Joined: Nov 24, 2005
Posts: 285
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PostPosted: Mon Dec 15, 2008 8:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

I've connected it today, but still seem to have issues. It is not doing anything like the "REAL" VCS.

Would be good to know if the "DIY" Version are having some issues which needs to be fixed.

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neandrewthal



Joined: May 11, 2007
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PostPosted: Mon Dec 15, 2008 11:03 pm    Post subject: Reply with quote  Mark this post and the followings unread

sduck wrote:
Very nice! I've got to get rolling on this one - I've been sitting on 2 sets of pcb's for a while, and just got 2 more (in motm format). I'm hoping to find a way to squeeze 2 of them into a 2u panel - we'll see.


Welcome to the exciting world of neo-MOTM. There's no going back Razz

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zthee



Joined: Feb 20, 2008
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PostPosted: Tue Dec 16, 2008 12:28 am    Post subject: Reply with quote  Mark this post and the followings unread

unit-sound wrote:
I've connected it today, but still seem to have issues. It is not doing anything like the "REAL" VCS.

Would be good to know if the "DIY" Version are having some issues which needs to be fixed.


What's it doing and what's it not doing?

I think the boards are exactly the same as the ones sold as real modules? Only it's an early rev.?
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sduck



Joined: Dec 16, 2007
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PostPosted: Tue Dec 16, 2008 6:54 am    Post subject: Reply with quote  Mark this post and the followings unread

neandrewthal wrote:
sduck wrote:
Very nice! I've got to get rolling on this one - I've been sitting on 2 sets of pcb's for a while, and just got 2 more (in motm format). I'm hoping to find a way to squeeze 2 of them into a 2u panel - we'll see.


Welcome to the exciting world of neo-MOTM. There's no going back Razz


Ha! I've been doing neo-motm for some time, but thanks anyway! Not nearly as cool as your system, but I'm thinking of posting a follow-up in your 2008 builds thread.

I tried some things last night, and I think I'm going to use one of these motm format pcb's in a 2u panel, similar to the one unit-sound did - it's got 4 pots on the pcb, might as well try it that way. I've also got 2 of the smaller pcb sets, if I find the thing useful I've got a plan for a 2 vcs in a 2u panel approach, using small knobs of course.

Here's the pcb in motm format -


motmvcspcbtop.jpg
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neandrewthal



Joined: May 11, 2007
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PostPosted: Tue Dec 16, 2008 11:22 am    Post subject: Reply with quote  Mark this post and the followings unread

WHOAH! Where did you get that?

That should be released as a regular PCB, as the one thing CGS REALLY needs is an envelope generator. Then it would be possible to construct an all CGS system of incredible power.

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sduck



Joined: Dec 16, 2007
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PostPosted: Tue Dec 16, 2008 2:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

Seth - the Bananaloque guy - posted an ad fairly recently - Nov 11? or so - trying to get rid of a bunch of pcb's, and down at the bottom was listed a few motm format boards, but at a really high price. I bit the bullet and bought 2 - he might have more.

Some back history - summer before last, when I first heard of the VCS and found his site, I emailed him asking about buying a module or just the guts of one to put onto a motm panel. He responded by saying that motm format was in the works, just hold on. Never heard anything about it again, despite several emails. Then he started selling the old euro pcb's, which we all have, and then finally, these ones popped up - what were supposed to be those motm format modules eventually, I guess.

Last edited by sduck on Tue Dec 16, 2008 8:11 pm; edited 1 time in total
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zthee



Joined: Feb 20, 2008
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PostPosted: Tue Dec 16, 2008 3:24 pm    Post subject: Reply with quote  Mark this post and the followings unread

neandrewthal wrote:
That should be released as a regular PCB, as the one thing CGS REALLY needs is an envelope generator. Then it would be possible to construct an all CGS system of incredible power.


I second that!

But I think that CGS feels there is already a great number of good envelopes on the DIY scene. So why do something that everybody else is doing?

I think what CGS should do is a Serge VCS type of module. But from what I heard the guy who owns the rights to build Serge modules keeps everything on a tight leash? (Now this is a rumor I picked up somewhere, so please correct me if I'm wrong! I don't want to go spread false information!! (But I mean why are there practicly no Serge schematics online? There are a ton of all the other stuff - but the only Serge shem I've seen is the TKB..)) So it's very unlikely that it would happen?

The schematics for the Serge VCS and a real CGS (2" x 6") board would be great though! Smile
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janvanvolt



Joined: Nov 24, 2005
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PostPosted: Tue Dec 16, 2008 6:45 pm    Post subject: Reply with quote  Mark this post and the followings unread

>> I shorted V+ to the VC-rise socket

i did that likewise and now the module seems to work, however i have every jack + pot connected as drawn on the pcb. so ... why is the module not working without that ? i am no PCB expert Sad

cheers

jan

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helitron



Joined: Feb 27, 2008
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PostPosted: Thu Dec 18, 2008 4:12 am    Post subject: Reply with quote  Mark this post and the followings unread

same here, ...no idea why. I just found it out by chance while testing the VC functions using a joystic as voltage source.

however I still have no clue what the trimmpot is good for. I tried what sound wrote, but I couldnt get both outputs at the same level (6.4V).
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e-grad



Joined: Sep 12, 2008
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PostPosted: Thu Dec 18, 2008 4:45 am    Post subject: Reply with quote  Mark this post and the followings unread

Strange, other than that it works fine?

@unit-sound. Great panel! How did you fix the card support?
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