The module is asimple MP3 player device which is based on a high-quality MP3 audio chip---YX5300. It can support 8k Hz ~ 48k Hz sampling frequency MP3 and WAV file formats. There is a TF card socket on board, so you can plug the micro SD card that stores audio files. MCU can control the MP3 playback state by sending commands to the module via UART port, such as switch songs, change the volume and play mode and so on. You can also debug the module via USB to UARTmodule. SD card not included Connect a speaker or headset to the audio jack to play a sound, any music, your voice, and more. Micro:bit Extension Extension name: makerbit-mp3 The microSD card shall be formatted as FAT16 or FAT32. exFAT is not supported properly and shall be avoided. To support all commands properly, the names of folders and files need to obey the following strict pattern: Directory names are two-digit numbers, e.g. 01. Track names within the directories shall start with a three digit numbers such as 001.mp3 or 002.wav Up to 99 directories and 255 tracks per directory are supported. Example project https://www.etchkshop.com/pages/soudtrapmicro-bit
