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 Forum index » DIY Hardware and Software
Buchla 208 Random PCB
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julian



Joined: Jan 11, 2008
Posts: 93
Location: UK

PostPosted: Mon Nov 30, 2009 4:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

Its not pretty, but...

I wanted to make the board self supporting, so i messed about making it into a euro module. Its not glamorous, or particularly well thought out, but i think itll work (its populated now, but i dont have all the ics at present)

Julian


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Coriolis



Joined: Apr 11, 2005
Posts: 616
Location: Stilling, Denmark

PostPosted: Tue Dec 01, 2009 1:56 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey that's cool! Looks good I think...

C

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Tasmanian Alkaloid



Joined: Jun 29, 2008
Posts: 116
Location: Isle De Mort

PostPosted: Wed Dec 02, 2009 2:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

I made a video of my 208 module. I haven't made a panel for it yet, but i put a CGS LED driver on each of the outputs.
The video title is a bit of a misnomer- the blue flashing LED is from a CGS Utility LFO, & the 4 LED's of the 208 are at the back.
It's a really fun module for firing off parameters like delay time cv, or for mixing to a single (summed) signal.
In the video, the 208 triggers delay parameters, a 258 VCO, Teezer & VCS.
The VCS triggers the 208 & the Utility LFO & VCS modulate the oscillators.
Thanks Romeo & to Luka

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RF



Joined: Mar 23, 2007
Posts: 1493
Location: Northern Minnesota, USA
Audio files: 28

PostPosted: Fri Jan 22, 2010 6:38 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the PCB run guys -well done!
I shoulda bought more of them than I did... If anyone has a couple they want to part with, PM me Smile

I finished the build on the first one of mine late last night. I added an internal clock, ext clock input, votage range adjust for each output and clock/trigger outputs.

I enjoyed experimenting with it last night and look forward to using it more. Among other things, I know I'll be using it often as a CV for various filters - I have sometimes tied up a sequencer doing that duty and this is a much better solution.

Thanks!

bruce


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mono-poly



Joined: Jul 07, 2004
Posts: 935
Location: Rotterdam, Netherlands
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PostPosted: Mon Jan 25, 2010 12:11 pm    Post subject: Reply with quote  Mark this post and the followings unread

Still waiting for my pcbs to arrive Mad
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fluxmonkey



Joined: Jun 24, 2005
Posts: 696
Location: cleve

PostPosted: Mon Jan 25, 2010 7:32 pm    Post subject: Reply with quote  Mark this post and the followings unread

mono-poly wrote:
Still waiting for my pcbs to arrive Mad


problem solved (they showed up shortly after this was posted). hope you like 'em!

b

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mono-poly



Joined: Jul 07, 2004
Posts: 935
Location: Rotterdam, Netherlands
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PostPosted: Tue Jan 26, 2010 3:18 am    Post subject: Reply with quote  Mark this post and the followings unread

I guess i will!
Thank you!
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ricoloverde



Joined: Nov 09, 2009
Posts: 38
Location: berkeley

PostPosted: Fri Aug 27, 2010 8:27 pm    Post subject: 208 thanx Reply with quote  Mark this post and the followings unread

Hi got a pcb for this off muffwiggler and built it today. Really enjoying it. Thank you so much for this one, cant wait to play with it more...

rico
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Quad



Joined: Dec 30, 2006
Posts: 18
Location: Stockholm, Sweden

PostPosted: Sat Sep 11, 2010 4:39 am    Post subject: Reply with quote  Mark this post and the followings unread

I finally sat down and finished one of these, it works great. A lot of fun. Thank you Now I'm thinking I should build in a voltage controlled clock, is this something I could rip out of the 266 design (I am thinking the FRV 555 driver might work) or should I look for a VC-lfo, which is simplest to build? What have you guys used?
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fluxmonkey



Joined: Jun 24, 2005
Posts: 696
Location: cleve

PostPosted: Sat Sep 11, 2010 4:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

Quad wrote:
I finally sat down and finished one of these, it works great. A lot of fun. Thank you Now I'm thinking I should build in a voltage controlled clock, is this something I could rip out of the 266 design (I am thinking the FRV 555 driver might work) or should I look for a VC-lfo, which is simplest to build? What have you guys used?


you might look at the 4046-based vco that's part of ken stone's digital noise...

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Peake



Joined: Jun 29, 2007
Posts: 1106
Location: Loss Angeles
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PostPosted: Wed Sep 15, 2010 11:33 am    Post subject: Reply with quote  Mark this post and the followings unread

If anyone has one or more of these PCBs they'd like to part with, please contact me.
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electang



Joined: Dec 20, 2007
Posts: 15
Location: fr

PostPosted: Thu Sep 16, 2010 10:40 am    Post subject: Reply with quote  Mark this post and the followings unread

Peake wrote:
If anyone has one or more of these PCBs they'd like to part with, please contact me.



I would be interested in one PCB too
Please contact me
Thanks
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LektroiD



Joined: Aug 23, 2008
Posts: 977
Location: Scottish Borders
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G2 patch files: 2

PostPosted: Fri Sep 17, 2010 6:56 am    Post subject: Reply with quote  Mark this post and the followings unread

If there are any PCBs left, please let me know, as I'd like one.

Many thanks Smile

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krisp14u



Joined: Nov 11, 2006
Posts: 206
Location: uk

PostPosted: Fri Sep 17, 2010 11:45 am    Post subject: Reply with quote  Mark this post and the followings unread

also be in for 2 PCB if there is a rerun I just dont feel like etching no more Razz
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Peake



Joined: Jun 29, 2007
Posts: 1106
Location: Loss Angeles
Audio files: 3

PostPosted: Fri Sep 17, 2010 12:08 pm    Post subject: Reply with quote  Mark this post and the followings unread

I almost have 1000 posts, and I'm pretty sure that EM sends out free PCBs to you when you pass 1000, so I'll forward them as they come in.

(hides)

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RSFC



Joined: Sep 02, 2010
Posts: 63
Location: space lab

PostPosted: Fri Sep 17, 2010 5:29 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'll take 1 or 2 if there is another go.
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synthi



Joined: Jul 20, 2007
Posts: 28
Location: Spain

PostPosted: Mon Sep 27, 2010 4:39 am    Post subject: Reply with quote  Mark this post and the followings unread

same here: 2 pcbs if the rerun is done Cool
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fluxmonkey



Joined: Jun 24, 2005
Posts: 696
Location: cleve

PostPosted: Mon Sep 27, 2010 4:51 am    Post subject: Reply with quote  Mark this post and the followings unread

i don't have permission to do a second run of the original design; but i might consider a run of a modified layout to include an onboard clocking vco and some (optional) output level trimmers. please continue to post so i can gauge interest.

b

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/mr



Joined: Aug 05, 2007
Posts: 223
Location: Elektron City, Sweden
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PostPosted: Mon Sep 27, 2010 6:09 am    Post subject: Reply with quote  Mark this post and the followings unread

I could use a PCB or two if it's done.
A clocking oscillator would be a good thing to include (I would add one if I'd build one myself), but output level trimmers feel unnecessary. Decent synths have level pots on their inputs. Smile
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fluxmonkey



Joined: Jun 24, 2005
Posts: 696
Location: cleve

PostPosted: Mon Sep 27, 2010 7:11 am    Post subject: Reply with quote  Mark this post and the followings unread

/mr wrote:
I could use a PCB or two if it's done.
A clocking oscillator would be a good thing to include (I would add one if I'd build one myself), but output level trimmers feel unnecessary. Decent synths have level pots on their inputs. Smile


as designed, these outputs swing almost rail-to-rail, so i usually put at least some fixed dividers to bring 'em down to +/-5 or 10 v. of course, they'd be entirely optional.

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/mr



Joined: Aug 05, 2007
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Location: Elektron City, Sweden
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PostPosted: Mon Sep 27, 2010 7:45 am    Post subject: Reply with quote  Mark this post and the followings unread

fluxmonkey wrote:
as designed, these outputs swing almost rail-to-rail, so i usually put at least some fixed dividers to bring 'em down to +/-5 or 10 v.

That's a good idea. Smile
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The Bad Producer



Joined: Mar 08, 2009
Posts: 255
Location: The Manhole

PostPosted: Mon Sep 27, 2010 11:10 am    Post subject: Reply with quote  Mark this post and the followings unread

fluxmonkey wrote:
i don't have permission to do a second run of the original design; but i might consider a run of a modified layout to include an onboard clocking vco and some (optional) output level trimmers. please continue to post so i can gauge interest.

b


I'd probably go for a few (4 maybe?) if this happens..

Charlie

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Quad



Joined: Dec 30, 2006
Posts: 18
Location: Stockholm, Sweden

PostPosted: Mon Sep 27, 2010 11:44 am    Post subject: Reply with quote  Mark this post and the followings unread

A variable lag processor that could be coupled with the clock could be an interesting add-on...
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rosch



Joined: Oct 03, 2009
Posts: 162
Location: germany

PostPosted: Tue Sep 28, 2010 4:09 am    Post subject: Reply with quote  Mark this post and the followings unread

i'd be interested too. at least 2 please-
thank you!
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Photon



Joined: Mar 22, 2005
Posts: 363
Location: Boston
Audio files: 1

PostPosted: Tue Sep 28, 2010 6:50 am    Post subject: Reply with quote  Mark this post and the followings unread

Sounds great, bbob. I'm interested in a board or two. The output trimmers and clock would be very nice additions.
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