[sdiy] Quantizer DAC or PWM?

[The SynthiMuse]

Hi Didier

Thanks for the info on the latest esp32 having no DACs.
I'll have to try a workaround or find some other useless but interesting
project for the seasonal break. :-)

Best wishes of the season to everyone.

Gerry


On Wed, 21 Dec 2022, 20:19 ezion, <ezion67 at gmail.com> wrote:

> ESP32 S3 might be overkill. ESP32 S2 is the little brother, single core
> lower clock. BUT it has 2 channels of 8 bit DAC.
> For pitch CV I would prefer to hook up an external DAC with more
> resolution.
>
> Cheers Theo
>
> On Mon, Dec 19, 2022 at 10:58 PM Didier Leplae via Synth-diy <
> synth-diy at synth-diy.org> wrote:
>
>> If I understand correctly, the ESP32-s3 got rid of DACs but previous
>> versions had them. I was a bit surprised not to find any
>>
>> On Dec 19, 2022, at 4:59 PM, The SynthiMuse <synthimuse at gmail.com> wrote:
>>
>> 
>> Literally today, I just received my first esp32 dev board to build :
>>
>>
>> https://www.google.com/amp/s/www.instructables.com/Extremly-Simple-Oscilloscope-Clock-With-ESP32/%3famp_page=true
>>
>> I was under the impression that the standard esp32 had native DACs.
>> Am I wrong?
>>
>> Gerry
>>
>> On Mon, 19 Dec 2022, 16:14 Didier Leplae via Synth-diy, <
>> synth-diy at synth-diy.org> wrote:
>>
>>> I’m working on developing a quantizer module for eurorack. I made a
>>> previous version using a PIC chip with a DAC which I abandoned during the
>>> chip shortage.
>>> Now I’m looking at taking up the project again but possibly with an
>>> esp32-s3 chip instead. This chip only has PWM, though.
>>>
>>> Question is whether PWM with smoothing circuit is it accurate enough for
>>> a quantizer? Does anyone have smoothing circuit to recommend?
>>> Or is a DAC the better option?
>>>
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