This serial MP3/WAV playback module is based on a high-quality MP3 audio chip. It supports 8k Hz to 48k Hz sampling frequency MP3 and WAV file formats. There is a TF card socket on board, so you can plug in the micro SD card that stores audio files.
MP3 playback can be controlled via a Microcontroller such as an Arduino by sending commands such as switch songs, change the volume, play mode, repeat, etc. to the module via the serial UART port. It is compatible with most Microcontrollers capable of serial communication at 9600 BAUD (Arduino / AVR / ARM / PIC). The module also includes a 3-Watt amplifier to connect directly to a speaker.
Supported sampling frequencies (kHz): 8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48
Supported file formats: MP3, WAV, WMA
Support Micro SD and Micro SDHC Cards up to 32GB
30-step adjustable volume
UART TTL serial control playback mode, 9600 baud rate
Support Power Supply: 3.2V ~ 5.2VDC
Dimensions: 1.7 x 1 x 0.2 inches (43 x 25 x 5 mm)