[sdiy] Control voltages for digital modules

[Elaine Klopke]

Hey all, 

I was originally going to title this "how hard would it be to turn Cthulhu into a synth module?" But I figured that would be followed by comments about H.P. Lovecraft and possibly Deep (House) Ones. Or that may just be me... ;)

Anyway, I'm talking about the VST plugin. https://www.xferrecords.com/products/cthulhu

Brief description for those that don't want to click the link: it's a MIDI utility(?). Each note on the keyboard is mapped to a certain chord depending on which preset you have loaded. Stock presets are mostly Bach Chorales. There's also an arpeggio module to spice things up. 

I figured that would actually be pretty easy to implement in a module and probably can hack together some Arduino code with a little effort. 

Here's the problem: how do I get a pitch CV from a sequencer or other module converted to the 0-5 volt input necessary for the microcontroller ADC. And what sort of DAC should be used to make proper CVs out of the digital signals?

Thanks in advance 

Sent from my iPhone
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