There's actually a fair amount of line-level codecs as well (more than there are ones with integrated amps, actually), the PCM5102 and ES9023 are examples. (If you use one of those, I'd suggest the PCM5102 as it doesn't need a MCLK.) I was hoping I could use the SD pin on the MAX98357 to just turn ...

(ESP32 Dev Board) Im trying to read wav files off an SD card (and play them), but keep running into this error: And contrary to the Serial Monitor, I do have three short wav files on the SD card. Starting setup... SD Card initialized. I2S output initialized. Root directory opened. No WAV files found...

For playing wav files you can use a MAX98357A I2S Decoder : https://www.youtube.com/watch?v=cnBDMpMSeQI I was going that route, but those have their own built in amps for a 3w speaker or something. I need an un-amplified signal so I can send it to my TPA3118 amp to drive a larger speaker. https://w...

It's not needed for either; the downside is that the internal DAC is only 8 bit so the audio will sound quite crusty. You will need some kind of amplifier before the speaker as well; the internal DAC isn't really intended to drive large loads. Thanks for the info, I think I'm ok with crusty because...

I'm newer to coding and this is on of my first real projects (ESP32 Dev), I've figured a bunch of stuff out, but I'm banging my head agasinst the wall on this one! I can't seem to get rid of the error: error: 'SD_SCK_MHZ' was not declared in this scope It'd (supposedly) defined on line 8 of the main...

Did you ever figure this out? I've been trying to do the exact same thing!

My first ESP32 project. I'm trying to make a basic audio player that plays the Wav files from a SD card reader strait to a speaker.

All the examples I'm finding seem to be using an external DAC. I know this is needed for mp3's, but didn't think so for Wav files.