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 Forum index » DIY Hardware and Software
The DoubleDeka Ultrasonic VCO
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frijitz



Joined: May 04, 2007
Posts: 1734
Location: NM USA
Audio files: 54

PostPosted: Sun Jul 25, 2010 2:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

Abby Normal wrote:
What size screws are needed for the front panel to slider mounting? I have 2-56 size screws, but they don't seem to fit. It seems like the wrong thread pitch.

According to the Alpha data sheet, the screws are M2 x .4 . Did you not get screws with the kit?

Quote:
I'm also wondering if I'm missing any documentation. All I have is the dd_board_doc.pdf. Is there anything else that I might be missing?

No, that's it. I can work with you on any issues or questions you have. Just let me know.

Very Happy

Ian
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Abby Normal



Joined: Feb 20, 2010
Posts: 66
Location: USA
Audio files: 2

PostPosted: Sun Jul 25, 2010 3:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks Ian.. For some reason, I didn't think the kit came with screws. I looked in the bag and they are there. Scott doesn't leave anything out, does he? Smile
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bridechamber



Joined: Oct 06, 2007
Posts: 64
Location: Saint Paul, MN

PostPosted: Mon Jul 26, 2010 9:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

Oh, don't say that -- I do!
I'm glad I didn't this time, though.
Smile
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schmidtc



Joined: May 16, 2009
Posts: 34
Location: Boston

PostPosted: Mon Oct 22, 2012 4:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

Ian, the link to the documentation on your site looks to be broken. Is there some other corner of the internet where I might find the info I need to get building? Thanks!
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frijitz



Joined: May 04, 2007
Posts: 1734
Location: NM USA
Audio files: 54

PostPosted: Mon Oct 22, 2012 5:17 pm    Post subject: Reply with quote  Mark this post and the followings unread

schmidtc wrote:
Ian, the link to the documentation on your site looks to be broken.

Unfortunately I had to take down a lot of material because of the Blue Lantern debacle. Did you buy a board or a kit from Bridechamber? If so, Scott should have emailed the docs to you.

Ian
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fonik



Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23

PostPosted: Tue Oct 23, 2012 3:49 am    Post subject: Reply with quote  Mark this post and the followings unread

any plans on doing a slider PCB for eurorack, ian?
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frijitz



Joined: May 04, 2007
Posts: 1734
Location: NM USA
Audio files: 54

PostPosted: Tue Oct 23, 2012 8:23 am    Post subject: Reply with quote  Mark this post and the followings unread

fonik wrote:
any plans on doing a slider PCB for eurorack, ian?

Yes, Laurie is doing the DD in Euro. I think it's almost finished.

Ian
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schmidtc



Joined: May 16, 2009
Posts: 34
Location: Boston

PostPosted: Tue Oct 23, 2012 11:12 am    Post subject: Reply with quote  Mark this post and the followings unread

Turns out, the build docs were buried in my hard drive
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LED-man



Joined: Feb 22, 2013
Posts: 40
Location: Germany

PostPosted: Fri Oct 09, 2015 2:39 am    Post subject: Reply with quote  Mark this post and the followings unread

i have ordered the great VCO and miss the documentation specially BOM
where i can find this ?
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frijitz



Joined: May 04, 2007
Posts: 1734
Location: NM USA
Audio files: 54

PostPosted: Fri Oct 09, 2015 9:14 am    Post subject: Reply with quote  Mark this post and the followings unread

LED-man wrote:
i have ordered the great VCO and miss the documentation specially BOM
where i can find this ?

Which version did you order?
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LED-man



Joined: Feb 22, 2013
Posts: 40
Location: Germany

PostPosted: Fri Oct 09, 2015 9:47 am    Post subject: Reply with quote  Mark this post and the followings unread

frijitz wrote:
LED-man wrote:
i have ordered the great VCO and miss the documentation specially BOM
where i can find this ?

Which version did you order?


From bridechamber the MOTM version
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sduck



Joined: Dec 16, 2007
Posts: 459
Location: Nashville
Audio files: 5

PostPosted: Fri Oct 09, 2015 7:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

He should send it you when you order it - but he sometimes forgets, so don't be afraid to ask him for it again.
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frijitz



Joined: May 04, 2007
Posts: 1734
Location: NM USA
Audio files: 54

PostPosted: Sat Oct 10, 2015 3:56 pm    Post subject: DD docs Reply with quote  Mark this post and the followings unread

Sent by PM.

Ian
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LED-man



Joined: Feb 22, 2013
Posts: 40
Location: Germany

PostPosted: Sat Oct 10, 2015 4:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thank you.
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davebr



Joined: Jun 09, 2007
Posts: 198
Location: portland, or

PostPosted: Thu Oct 29, 2015 10:56 pm    Post subject: DoubleDeka Reply with quote  Mark this post and the followings unread

I just finished my DoubleDeka build using the Bridechamber kit. It came out pretty nice. I did a couple of minor mods on it. Photos, details and scope images on my page at http://modularsynthesis.com/bridechamber/doubledeka/doubledeka.htm. I used 0.5" square potentiometers and made an aluminum bracket for it. And yes, I did wire my octave switches backwards initially also.

Dave

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LED-man



Joined: Feb 22, 2013
Posts: 40
Location: Germany

PostPosted: Tue Feb 19, 2019 1:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

I’m looking for the BOM and the buildguide which was offered many years ago by bridechamber.
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Starspawn



Joined: Jun 14, 2013
Posts: 85
Location: Oslo

PostPosted: Tue Feb 19, 2019 2:40 pm    Post subject: Reply with quote  Mark this post and the followings unread

Dave, I tried your mods but it seems like the comparator for HF out at 12V is a bit off, could you suggest an alternate value for resistors 12V?
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Grumble



Joined: Nov 23, 2015
Posts: 1277
Location: Netherlands
Audio files: 30

PostPosted: Tue Feb 19, 2019 4:08 pm    Post subject: Reply with quote  Mark this post and the followings unread

I just got curious about this vco, is there a way to have a look at schematics?
I’m not going to build it or make money out of it in any way, just interested from a technical point of view...

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my synth
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vladosh



Joined: Aug 02, 2010
Posts: 641
Location: macedonia
Audio files: 43

PostPosted: Fri Feb 22, 2019 5:06 am    Post subject: Reply with quote  Mark this post and the followings unread

the schematics are http://ijfritz.byethost4.com/sy_cir15_DD_link.htm ,thanks to Ian for that ,for me it would take 3 pcb's at least to make it Very Happy
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piedwagtail



Joined: Apr 15, 2006
Posts: 297
Location: shoreditch
Audio files: 3

PostPosted: Mon Feb 25, 2019 10:11 am    Post subject: Reply with quote  Mark this post and the followings unread

I did it with 3 pcbs :mother/daughter/slider- used 4022 for 8 faders and 4040 for mega division. Jumpers rather than rotary.

As there's a lot of 4070 real estate sitting around looking for Chinese (pcb) investors- I implemented a /8 digital sine with a 4520 from Don Lancaster.

R
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Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
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