[sdiy] Control voltages for digital modules

[john slee]

On 14 July 2017 at 20:11, Elaine Klopke <functionofform at gmail.com> wrote:

> 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?
>

LOTS of prior art here in Mutable Instruments modules. Olivier has
generously shared not only the schematics/design files, but also the source
code for them all. There's much to be learned, if you look :-)

https://github.com/pichenettes/eurorack

eg. his Rings module uses one of these:

https://www.cirrus.com/products/wm8731/

John
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