[sdiy] controlling switches with CV

[Kylee Kennedy]

There's also the possibility to do the switching with CMOS chips.

Kylee

On Wed, Apr 19, 2017 at 8:54 PM, Elain Klopke <functionofform at gmail.com> wrote:
> Florian- Thank you, I'll look into A/D converters.
>
> Quincas- I'm using CD4066 quad switch chips for polyphonic (paraphonic)
> control of a module based on a top octave design. I already have a scheme
> for controlling it via MIDI, but after seeing the Intellijel Metropolis and
> the Klee sequencer, I kinda want my options open to be able to control the
> thing via CV as well. I hope that makes more sense.
>
> -Ian
>
> On Wed, Apr 19, 2017 at 7:19 PM, Quincas Moreira <quincas at gmail.com> wrote:
>>
>> That doesn't quite make sense... The whole switch situation exists so one
>> can manually activate them by pressing keys. If it is to be automated then
>> there's surely a simpler way than using relays into a normal CV keyboard
>> circuit, no?
>>
>> On Wed, Apr 19, 2017 at 4:38 PM, Florian Anwander
>> <fanwander at mnet-online.de> wrote:
>>>
>>> I think he means: have a switch based keyboard like an simple organ, an
>>> now select with a voltage, which switch should be activated (which key
>>> should be presse). The real activation of the switch/key will happen by a
>>> gate signal.
>>>
>>> My solution would be a simple A/D converter, which produces 6 bit data
>>> from the voltage. This data bus is used to address the corresponding switch.
>>> For example: it adresses a line of demultiplexers, the common signal is the
>>> gate, the individual outs are connected with FET switches.
>>>
>
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