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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Posted: Sun Nov 05, 2017 1:35 pm Post subject:
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Fixed. Since the pcb images don't seem to be 100% reliable, I'll check that everything is in accordance to the schematic on the next one. I'm probably going to do the utility envelope generator next. |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Posted: Wed Nov 08, 2017 8:56 pm Post subject:
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I just got an interesting idea. I have a 9 gang 11 position rotary switch that I've been meaning to put to use. My idea is to make a 10 patch preset module where this rotary switch would be used to pre-patch the system. I'd use switched jacks so plugging in a cable overrides the pre-patch. one of the positions on the switch would have no pre-patched connections, which would make the system a normal modular one. unfortunately, the switch isn't standard and each gang has different connections and don't always have a common rail that it follows, but I'll be making a diagram to help with that. I'd imagine this being very useful for live applications to quickly switch patches, and for experimentation. |
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Ayab
Joined: Oct 27, 2015 Posts: 180 Location: London, UK
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Posted: Sat Nov 11, 2017 4:59 am Post subject:
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Hubba Bubba!! Going to have a go at the CV cluster!
Thank you |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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wackelpeter
Joined: May 05, 2013 Posts: 461 Location: germany
Audio files: 10
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Posted: Mon Nov 13, 2017 12:54 pm Post subject:
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you absolutely need a Minimum of 6 DUSG or VCS.
Just want to chime in and tell, that i yesterday fisrt time experienced with 2 VCs as slew limiters for my sequencer for controlled glide events.
Just stick the CV of the sequencer into the Signal Input of 1 VCS adjust fall and rise to taste, and connect a trig out from the seq to the trig in of the 2and and adjust rsie and fall there too and connect it's output to the controls for rise, fall or both... can give some nice variations on the sequenced Output. Well you can also produce steady glide with 1 VCS and just the rise and fall ratio.
Well this module is endless fun and literally a dozen of application to use for. _________________ https://soundcloud.com/bastian-j |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Posted: Mon Nov 13, 2017 4:46 pm Post subject:
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^ That's a neat idea, so I suppose if you have two rows of gates on/off switches on the sequencer, you'd be able to choose which steps glide, similar to a TB-303, while the other triggers a basic EG. That's pretty awesome.
The DUSG is the one module I'm looking forward to completing the most, as I've heard so much DUSG praise. I'm also curious as to how well it tracks as VCO. |
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The Bad Producer
Joined: Mar 08, 2009 Posts: 282 Location: The Manhole
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Posted: Tue Nov 14, 2017 5:35 am Post subject:
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The DUSG doesn't track so well without mods - which are quite easy to implement if you can be bothered!
Firstly make sure you match the transistors in the 'core' (I use BC550C and BC560C here FWIW) then you need to add a trimmer and a tempco (probably silly adding a tempco, but what the hell!)
I will eventually document the mod here, hopefully soon, I do keep meaning to do it!
http://www.loudestwarning.co.uk/portfolio/dusg/ _________________ http://loudestwarning.tumblr.com/ |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Posted: Tue Nov 14, 2017 12:21 pm Post subject:
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^ Thanks, I'll try it out once I build the DUSGs. That's a nice site you have there too, beautiful builds. |
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wackelpeter
Joined: May 05, 2013 Posts: 461 Location: germany
Audio files: 10
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Posted: Tue Nov 14, 2017 2:04 pm Post subject:
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The Bad Producer wrote: | The DUSG doesn't track so well without mods - which are quite easy to implement if you can be bothered!
Firstly make sure you match the transistors in the 'core' (I use BC550C and BC560C here FWIW) then you need to add a trimmer and a tempco (probably silly adding a tempco, but what the hell!)
I will eventually document the mod here, hopefully soon, I do keep meaning to do it!
http://www.loudestwarning.co.uk/portfolio/dusg/ |
How good does your modded versions track? I also did the trimmer and resistor in series as replacement for the 1k8 resistor at the V/oct Input but i only managed to get them tracking over 2 octaves and it significantly tracks more worse the higher the overall pitch is. Above 1kHz at ca. 1,2 or 1,6kHz it really looses on precision as far as i remember. (well i don't Play them normally with Keyboard) but i have some recordings made solely or mostly of DUSG and VCS and i find them, ahem well, mabye not adorable but tolerable, which is more relying on the case that i'm an imperfect musician.
Maybe i will post some snippets of them, to torture your ears. _________________ https://soundcloud.com/bastian-j |
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wackelpeter
Joined: May 05, 2013 Posts: 461 Location: germany
Audio files: 10
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Posted: Tue Nov 14, 2017 2:10 pm Post subject:
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One thing i forgot, what do you guys think of bringing the inverted EOC also to the Panel? I mean i'Ve done that on a few. It has a wider PW than the other and yeah it's the opposite, but when i'm mixing into the sound some divisions of the original Signal as sub-oscillator i find myself mostly using the inverted output for the divider, because i think it fit's better to the harmonics. _________________ https://soundcloud.com/bastian-j |
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The Bad Producer
Joined: Mar 08, 2009 Posts: 282 Location: The Manhole
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Posted: Wed Nov 15, 2017 3:20 am Post subject:
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I can get around 3-4 octaves, I *remember* getting 5 at one point but I've swapped so many bits in and out to get there that I didn't like the overall response (range etc) so went back to the 'normal' mods - which include changing the 22NF capacitor to 10NF for 'better' operation at high speed. It is certainly better at lower frequencies...
I say 'better' and 'normal' fully in the knowledge that these are subjective, it is, after all, just a fancy EG - and everything else of course! _________________ http://loudestwarning.tumblr.com/ |
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The Bad Producer
Joined: Mar 08, 2009 Posts: 282 Location: The Manhole
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Posted: Wed Nov 15, 2017 3:25 am Post subject:
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Oh, and thanks for the kind words about the site! I sell panels for the CGS PCB's so thought it a good idea to add a bit of support for builders!
The inverted EOC is a good idea, I was looking at that a while ago, I wondered if you could use the op-amp that buffers the bipolar out to make a comparator so you have GATE output, may require a lot of tomfoolery on the CGS PCB, I didn't get past thinking about it! _________________ http://loudestwarning.tumblr.com/ |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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wackelpeter
Joined: May 05, 2013 Posts: 461 Location: germany
Audio files: 10
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Posted: Fri Nov 17, 2017 7:31 am Post subject:
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VC FM is lin FM and Freq CV is exp. FM... At least anything going in into the summing Input from the OP amp of the Expo converter is somehow giving an exp. FM.
Half a year i build 4 of those ASM1 VCO's on which the CGS is based and they sound great. I altered them a bit by using the Expo Converter of the Thomas Henry 4046 VCO and the Buchla exp.CV processing from the 258 VCO. _________________ https://soundcloud.com/bastian-j |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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The Bad Producer
Joined: Mar 08, 2009 Posts: 282 Location: The Manhole
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haebbmaster
Joined: Aug 27, 2016 Posts: 40 Location: Windenreute, Germany
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haebbmaster
Joined: Aug 27, 2016 Posts: 40 Location: Windenreute, Germany
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Posted: Thu Nov 23, 2017 9:24 am Post subject:
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your color system:
CV and audio are not strictly separated here. You can use a DUSG for CV and also for audio.
So I decided to use black for inputs an red for outputs
I made paperface panels, laser printed paper laminated with an office laminator. Glued to an expoxy pcb with a contact adhesive.
But the max paper format is A4, so this will be too small for your suitcase. _________________ Make modular synthesizers great again!
Modular Synthesizer DIY blog: http://modular.haebbmaster.de |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Posted: Thu Nov 23, 2017 11:46 am Post subject:
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^ Yea, there are some exceptions with the color coding system. Another instance is on the Serge Noise module, where one of the jacks serves as both the trigger input and output. I may pick a different color to use on specifically "hybrid" functions, but I'm still unsure. I'll buy some extra jacks of each color and mess around a bit with different configurations once I figure out how I'm going to go about the panel.
Another idea for panels, is that I could check if a local print shop could print an adhesive vinyl sticker. Hopefully they would be able to do larger prints than A4.
I'm also going to ask Julian (on Muff Wiggler) if he can make panels from autocad files (it's the only cad software I can use). I remember him saying that he can only do brushed aluminum panels with 1.5mm thickness, Which would be too thin for such a large panel. I'm currently making separate graphics-only and drill holes only panels on cad, so I'll send those to him once I'm done and see if it's something he could do, and if it's something I could afford.
Anyways, Thanks for the feedback! |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Posted: Sat Jan 13, 2018 5:14 pm Post subject:
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Anyone know a suitable replacement for the PN4250 used on the Smooth & Stepped Generator? All of the pcbs for the modules came in and I'm filling up my cart online. Last edited by Hubaswift on Sat Jan 13, 2018 11:34 pm; edited 1 time in total |
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Hubaswift
Joined: Jul 06, 2016 Posts: 91 Location: Canada
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Posted: Sat Jan 13, 2018 11:34 pm Post subject:
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I just placed an orders for all the parts necessary to build all the modules in the synth, except the PN4250, I'll figure that one out when the time comes. Maybe a general purpose PNP will do. |
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Ayab
Joined: Oct 27, 2015 Posts: 180 Location: London, UK
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Posted: Sun Jan 14, 2018 5:22 am Post subject:
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Hubaswift wrote: | I just placed an orders for all the parts necessary to build all the modules in the synth, except the PN4250, I'll figure that one out when the time comes. Maybe a general purpose PNP will do. |
Sent you a pm |
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