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Tim Servo
Joined: Jul 16, 2006 Posts: 924 Location: Silicon Valley
Audio files: 11
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Posted: Wed Jun 03, 2009 11:52 am Post subject:
Next AS21C PCB? Subject description: What's next... |
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So now that the Cucamonga LFO is done, I was wondering what project from AS21C people would be interested in seeing next. The schematics in the book include:
Power Supply
ADSR Envelope Generator
XR VCO
LM VCO
VCF / VCA
LFO (done!)
Sample and Hold
VC Noise
VC Phase Shifter
I have a few other PCBs and projects in the pipeline (including Thomas' VCO book and ARP clone VCO and VCF boards), but I'd love to hear what AS21C stuff people would like to see next. There seems to be a lot of interest in the XR VCO, and I was actually thinking of attempting put the VC Noise, S/H, ADSR and a simple LFO all on one board, with a scheme for 'normalled' connections so that the different parts could work together or be used separately. I think that would make a very cool mod source, and a handy PCB to have (which I was going to call the "Mod Squad"). I also think the SV VCF / VCA combo would be a fun project, or perhaps use Thomas' SV VCF design and make it into a dual SV filter (which you can do with a single 2164 VCA chip).
Anyway, goofy names aside, what sparks your interest? Thoughts? Comments? Suggestions?
I'd also love to hear from people who have built some of the other circuits from AS21C. What are your favorites? How do they behave?
Thanks!
Tim ("El Cerrito" and "Memphis" are next on the list) Servo |
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parasitk
Joined: Sep 21, 2008 Posts: 69 Location: NYC
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Posted: Wed Jun 03, 2009 9:54 pm Post subject:
Re: Next AS21C PCB? Subject description: What's next... |
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Tim Servo wrote: | Anyway, goofy names aside, what sparks your interest? Thoughts? Comments? Suggestions?
I'd also love to hear from people who have built some of the other circuits from AS21C. What are your favorites? How do they behave? |
I had emailed you about the VCO-1, and after your response I'm definitely most interested in the LM VCO, followed by the XR! _________________ [ http://soundcloud.com/parasitk ]
[ http://www.iparasite.net ] |
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Junk Rhythm
Joined: Jan 07, 2008 Posts: 81 Location: San Francisco, CA
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Dego
Joined: Apr 22, 2008 Posts: 139 Location: Sweden
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Posted: Thu Jun 04, 2009 3:06 am Post subject:
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XR VCO and LM VCO |
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magman
Joined: Feb 04, 2009 Posts: 363 Location: Liverpool, UK
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Posted: Thu Jun 04, 2009 8:54 am Post subject:
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I'd put my vote in for the ADSR, as this would give enough modules for a basic TH synth.
Regards
Magman |
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numbernone
Joined: Aug 16, 2006 Posts: 477 Location: new york city
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Posted: Thu Jun 04, 2009 12:29 pm Post subject:
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The ADSR is such a TINY circuit, it should be multiples on a single board IMHO.
I fit 3 on an express PCB mini board (2.8" x 3.5").
If not at least pair it up with the S&H or something. |
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Tim Servo
Joined: Jul 16, 2006 Posts: 924 Location: Silicon Valley
Audio files: 11
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Posted: Thu Jun 04, 2009 12:53 pm Post subject:
Next AS21C PCB? |
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numbernone wrote: | The ADSR is such a TINY circuit, it should be multiples on a single board IMHO.
I fit 3 on an express PCB mini board (2.8" x 3.5").
If not at least pair it up with the S&H or something. |
Exactly. That's why I was thinking of putting the ADSR together with the S/H, Digital Noise and maybe my 8K LFO to form the "Mod Squad." Should be able to shoe horn that all onto one PCB, and then you have a nifty little self-contained modulation module.
Tim (Nerd Squad) Servo |
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vtl5c3
Joined: Sep 08, 2006 Posts: 425 Location: PDX
Audio files: 13
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Posted: Thu Jun 04, 2009 1:40 pm Post subject:
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I would like a board for the VC-Noise circuit! |
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parasitk
Joined: Sep 21, 2008 Posts: 69 Location: NYC
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Posted: Thu Jun 04, 2009 2:42 pm Post subject:
Re: Next AS21C PCB? |
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Tim Servo wrote: | Exactly. That's why I was thinking of putting the ADSR together with the S/H, Digital Noise and maybe my 8K LFO to form the "Mod Squad." Should be able to shoe horn that all onto one PCB, and then you have a nifty little self-contained modulation module. |
Okay, that sounds cool too! _________________ [ http://soundcloud.com/parasitk ]
[ http://www.iparasite.net ] |
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magman
Joined: Feb 04, 2009 Posts: 363 Location: Liverpool, UK
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Posted: Thu Jun 04, 2009 3:12 pm Post subject:
Re: Next AS21C PCB? |
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Tim Servo wrote: | numbernone wrote: | The ADSR is such a TINY circuit, it should be multiples on a single board IMHO.
I fit 3 on an express PCB mini board (2.8" x 3.5").
If not at least pair it up with the S&H or something. |
Exactly. That's why I was thinking of putting the ADSR together with the S/H, Digital Noise and maybe my 8K LFO to form the "Mod Squad." Should be able to shoe horn that all onto one PCB, and then you have a nifty little self-contained modulation module.
Tim (Nerd Squad) Servo |
I think things may get a bit tight on a front panel with this lot (Thinking of a MOTM style 2U panel for example, these normally aim for 6 pots and up to 12 jacks).
I make it 8 pots and 12 jacks. I would see the pots being the main constraint, the 8K LFO is the one that tips the balance I suspect.
Regards
Magman |
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Tim Servo
Joined: Jul 16, 2006 Posts: 924 Location: Silicon Valley
Audio files: 11
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Sound
Joined: Jun 06, 2006 Posts: 842
Audio files: 1
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Posted: Fri Jun 05, 2009 2:38 pm Post subject:
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I would like the filter.
Also the Adsr. |
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fluxmonkey
Joined: Jun 24, 2005 Posts: 708 Location: cleve
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Posted: Fri Jun 05, 2009 6:56 pm Post subject:
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numbernone wrote: | The ADSR is such a TINY circuit, it should be multiples on a single board IMHO.
I fit 3 on an express PCB mini board (2.8" x 3.5").
If not at least pair it up with the S&H or something. |
for me, not so much. altho the components might fit, the board-to-panel wiring starts getting pretty hairy. also, i generally prefer to have things separate, in terms of versatility/flexibility... that's what makes it modular. just my $.02.
b _________________ www.fluxmonkey.com |
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Tue Jun 09, 2009 2:45 pm Post subject:
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i may seem a little bit quirky, but i liked to have the VC phase shifter. we don't see lot of PCBs for phase shifters, don't we?
i made a PCB myself, but it does not work (actually not at all) and i am still looking for the error _________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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slo
Joined: Feb 18, 2007 Posts: 204 Location: Victoria, BC
Audio files: 1
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Posted: Fri Jun 12, 2009 1:33 pm Post subject:
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Ditto for the phase shifter
George |
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Sound
Joined: Jun 06, 2006 Posts: 842
Audio files: 1
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Posted: Fri Jun 12, 2009 2:42 pm Post subject:
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Yes the phase shifter is a good idea! |
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