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Pixelator
Joined: Oct 24, 2018 Posts: 1 Location: Poland
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Posted: Wed Oct 24, 2018 11:53 am Post subject:
What is the easiest way to make 1v/oct VCO? Subject description: This will be one of my first projects |
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This will be my first serious project and I need tips and schematics |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320
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steved
Joined: Oct 07, 2015 Posts: 18 Location: usa
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cslammy
Joined: Apr 27, 2018 Posts: 206 Location: USA
Audio files: 1
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Posted: Wed Oct 31, 2018 1:16 pm Post subject:
Re: What is the easiest way to make 1v/oct VCO? Subject description: This will be one of my first projects |
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Pixelator wrote: | This will be my first serious project and I need tips and schematics |
Hi Pixelator:
Some options:
I have looked around a lot and as far as I can tell if you need 8+ octaves of v/oct tracking without using a dedicated chip, the easiest option remains the ASM VCO.
I have built this now 3 times, I have a new layout on my site, a couple of users are trying out the new fab so i can't vouch for that yet.
I can let you know how that goes.
http://www.charlielamm.com/gear/VCO/forums.html#2002VCO
Pretty sure Elby designs can sell you a PCB or kit? I recall they took over the ASM project.
Also if you want to go single chip Cool Audio sells a reboot of the old Curtis VCO chip. Not sure if that's less parts, but you don't need some of the matched trannies and whatnot. Here are some schematics that use it, I've never tested any of these but I'll bet others on the forum can weigh in.
https://electricdruid.net/cem3340-vco-voltage-controlled-oscillator-designs/
There is also a "LookMum" video on youtube where that guy has a series of vids about building a vco around this chip. No idea if any of it works but the lookMumNoComputer guys vids are always fun.
https://www.youtube.com/watch?v=4Kz8YopLTCQ _________________ Visit my AUDIODIWHY blog and website |
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Project_2501
Joined: Jan 31, 2018 Posts: 68 Location: Los Angeles
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Posted: Tue Nov 06, 2018 2:32 pm Post subject:
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https://www.lookmumnocomputer.com/projects/#/cem-3340-diy-simple/
AS3340 are roughly $10 shipped on ebay. cheap version of the cem3340, synthcube has Original curtis chips for $15
Easy build, sam makes great stuff.
I'm building this next week, I'll post notes and samples when I complete it. |
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cslammy
Joined: Apr 27, 2018 Posts: 206 Location: USA
Audio files: 1
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Posted: Wed Nov 07, 2018 8:11 am Post subject:
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Great, please let us know how this works!
I have some 3340's that need to be used for something, and LookMum always has great respect for low parts count. you got to just love the sam lookmum guy. He's funny and super enthusiastic, the really impressive thing is that he gets like 70K+ views for vids that involve DIY audio--wait, that's what we do! I didn't think it possible!! _________________ Visit my AUDIODIWHY blog and website |
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