DFPlayer Mini MP3 Player Module V3.0 16P TF Card U Disk DF Player Module Mini MP3 Player Audio Module MP3 Voice Decode Board for Arduino. The module can be used alone with a power supply battery, speakers, and buttons, or it can be controlled through the serial port as a module for Arduino or any microcontroller with a serial port. The module itself integrates hard decoding of MP3, WAV, and WMA. At the same time, the software supports TF card driver and FAT16 and FAT32 file systems. Through simple serial port instructions, you can complete functions such as playing specified music and how to play music. There is no need for cumbersome underlying operations. It is easy to use, stable and reliable.