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 Forum index » DIY Hardware and Software » Arduino
MIDI2CV Project + PCB files
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Dodecasonico



Joined: Jul 12, 2015
Posts: 4
Location: México
PostPosted: Mon May 09, 2016 2:38 pm    Post subject: Reply with quote  Mark this post and the followings unread
himijendrix wrote:
+-15V should work fine (LF444 is rated at +-22V).
But you will get +15V as a gate out.

----

I wouldn't recommend this project, since the DAC are only 8-bit and the opamps' non-linearity is also a problem. Furthermore the MAX517 are so expensive now. With 8-bit resolution it could also be done with the Atmega328 and PWM+Low Pass Filter.

For a better Pitchbend (which is 14-bit) to CV convertion to MCP4922 (12-bit and cheaper) could be used. Together with a 5V reference and a opamp voltage doubler.

Four Channels could be Note (+ Pitchbend) , Velocity, Modulation Wheel, CC


Thanks man !!! Do you have a link to a good arduino midi to cv project ???
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himijendrix



Joined: Apr 16, 2012
Posts: 18
Location: Germany
PostPosted: Mon May 09, 2016 2:50 pm    Post subject: Reply with quote  Mark this post and the followings unread
If you want to user you PC and not a keyboard this is a one:
http://mutable-instruments.net/midipal
Very good ideas (Fine tuning with Midi), 12 bit and simple to build.
But it only has +5V Output, which might not be enough for many synths.

I was just looking for some similar new and cheap Midi/CV projects, but actually I didn't find any.

You can keep on looking here:
http://www.oakleysound.com/mididac.htm
http://store.hexinverter.net/forums.html?route=product/search&search=midi
http://registeringdomainnamesismorefunthandoingrealwork.com/2009/01/homebrew-midi-cv-box/
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