ESP32 Forum • any compensate to use ESP32S3 for wave generate and shown?

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any compensate to use ESP32S3 for wave generate and shown?

Posted: Wed Apr 19, 2023 9:55 pm

by lladam

Hi all.
the ESP32 S3 don't have a DAC, is it possible to use it to generate waves like sine wave? or shown wave like a oscilloscope?
Thanks
Adam

Re: any compensate to use ESP32S3 for wave generate and shown?

Posted: Thu Apr 20, 2023 2:31 am

by ESP_Sprite

You can put the I2S peripheral into PDM mode, then use a simple RC filter to smooth out the pulses.

Re: any compensate to use ESP32S3 for wave generate and shown?

Posted: Thu Apr 20, 2023 4:06 pm

by lladam

Thanks.
Are there any examples? at least got better result one?