[sdiy] controlling switches with CV

[Elain Klopke]

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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