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 Forum index » DIY Hardware and Software » Synthasystem
VCO Finished!
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dingebre



Joined: Aug 10, 2008
Posts: 263
Location: Salt Lake City, UT USA

PostPosted: Tue Sep 21, 2010 10:46 pm    Post subject: VCO Finished! Reply with quote  Mark this post and the followings unread

Here are some photos of the finished VCO module. You can see how the PCBs stack and the edge connectors.

It isn't fully calibrated yet. I'm still tweaking some of the billion trimmers to see how they interact. I'm finding the Sync Bias propagates through to the sine wave shape as well. I think there will be more iterations in the calibration than I thought there would be.

You can see the -10 volt regulator as I chose to run on the "vintage" +12 / -10 volts just because I can Smile

David


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_________________
David M. Ingebretsen, M.S., M.E.
Collision Forensics & Enginering, Inc.

dingebre@3dphysics.net
http://www.xmission.com/~dingebre/Synthasystem.html
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jksuperstar



Joined: Aug 20, 2004
Posts: 2491
Location: Denver
Audio files: 1
G2 patch files: 18

PostPosted: Wed Sep 22, 2010 7:25 am    Post subject: Reply with quote  Mark this post and the followings unread

Congrats on the VCO! If you do figure out the calibration process, make sure you document it! Smile
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emdot_ambient



Joined: Nov 22, 2009
Posts: 669
Location: Frederick, MD

PostPosted: Wed Sep 22, 2010 2:42 pm    Post subject: Reply with quote  Mark this post and the followings unread

Lookin' good! Will be nice to hear some audio from it whenever you've got it calibrated.
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dingebre



Joined: Aug 10, 2008
Posts: 263
Location: Salt Lake City, UT USA

PostPosted: Sat Oct 09, 2010 7:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

jksuperstar wrote:
Congrats on the VCO! If you do figure out the calibration process, make sure you document it! Smile


I finally was able to make time to finish the calibration. The web pages have been updated based on my experience doing it.

It was actually very straightforward and the trimmers all did exactly what they were supposed to.

I'll get some audio put together as soon as I can an will upload it.

_________________
David M. Ingebretsen, M.S., M.E.
Collision Forensics & Enginering, Inc.

dingebre@3dphysics.net
http://www.xmission.com/~dingebre/Synthasystem.html
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