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Very simple sawtooth VCO (V/Hz)
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Yipdeceiver



Joined: Apr 07, 2014
Posts: 4
Location: Athens GA

PostPosted: Mon Apr 07, 2014 3:47 pm    Post subject: Reply with quote  Mark this post and the followings unread

A friend and I built this and it's pretty rad. One thing though, patching it through the ext signal in on the ms10 and the extra oscillator doesn't respond to the lfo. Is there anyway to make that happen? Might be more of an ms10 question I guess, but I figured you guys might have some ideas.
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bod



Joined: Apr 28, 2009
Posts: 148
Location: Glasgow

PostPosted: Tue Apr 08, 2014 4:28 am    Post subject: Reply with quote  Mark this post and the followings unread

you would need to take a signal from the ms10 lfo output and connect it to the cv input of the oscilator for that to work, but it would work.
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Yipdeceiver



Joined: Apr 07, 2014
Posts: 4
Location: Athens GA

PostPosted: Thu Apr 24, 2014 1:30 pm    Post subject: Reply with quote  Mark this post and the followings unread

I've been looking around and found this cv scaling circuit. I used an lm324 because that's what I had lying around so I have the extra op amp already. Think it would be worth it to throw this in front of the cv input in an attempt to get this vco to track correctly? Or would that work?


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Yipdeceiver



Joined: Apr 07, 2014
Posts: 4
Location: Athens GA

PostPosted: Thu Apr 24, 2014 2:57 pm    Post subject: Reply with quote  Mark this post and the followings unread

I went ahead and bread boarded this up and after fiddling with resistors for a while I think I've got something. It tracks reasonably well with my ms 10 now. The lowest note and the highest note are perfectly in tune with a little bit of variation in the middle octave. Obviously it's not perfect but it is definitely better. I'm not sure why it is deviating in the middle octave though. Any thoughts?
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