Constant buzzing from speaker on GPIO26 (CYD). Can an external I2S amp be used?

harbaum / galagino

A Galaga, Pac-Man and Donkey Kong arcade emulator for the ESP32

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Constant buzzing from speaker on GPIO26 (CYD). Can an external I2S amp be used? #39

Closed pinter75 closed 5 months ago

pinter75 commented 5 months ago

HI,

Steller work on this, it's faultless!!

Except for the sound on my CYD display. It has an amp on pin 26, but all I hear is a buzzing sound?

To be honest I have not really ever had much luck with the sound on these boards.

So can an external I2S amp (MAX98357) be used, probably overkill for the sounds generated, but a least I will hear something less annoying than a buzzing!

:-)

pinter75 commented 5 months ago

Seems I have a broken amp IC.

not-surt commented 5 months ago

There's a known design defect with the CYD amp: https://github.com/witnessmenow/ESP32-Cheap-Yellow-Display/blob/main/Mods/README.md#audio-amp-gain-mod

harbaum commented 5 months ago

It should be possible to use an external i2s amp with minimal changes. But I never tried that.