4 ms·
I tried something similar, i.e. MP3 playback from SD card on a "small board". Because I am an electronics noob progress is slow. There's a lot to consider like
by ofrzeta 4y ago
I tried something similar, i.e. MP3 playback from SD card on a "small board". Because I am an electronics noob progress is slow. There's a lot to consider like SPI multiplexing when you run a display and the SD card adapter over SPI (that display/SD combo in the "tape player" project is quite interesting). First I went with some lm386 audio amp until I learned it's a lot easier with an I2S amp such as it is used in Walkm3person.
After some semi-successful attempts with a Metro M4 Express (samd51 chip) I have now switched to ESP8266 (built-in Wifi opposed to the M4). It never occurred to me that the Raspberry Pico is powerful enough for MP3 playback.