MP3 v3.0

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MP3 is a 20x40mm super mini Music module based on WT2003S-20SS audio decoder. It supports high-quality MP3 format audio files with a sampling rate of 8~48KHz and a bit rate of 8~320Kbps. In order to expand the storage capacity, we added a TF card slot on the back of the module. TF card adopts DIO interface mode, supports up to 32GB, supports FAT16, FAT32 file system. Now with this little music module, you can carry hundreds and thousands of music in your pocket.

As the name indicates, the Grove – MP3 V3 is the upgraded version of Grove – MP3 V2. Compared with Grove MP3 V2, the V3 added a JST2.0 speaker port, so that you can output the audio via speaker and 3.5mm earphone at the same time.


  • Supports MP3 format audio files
  • Sampling rate: 8~48KHz / bit rate: 8~320Kbps
  • Support up to 32GB TF card
  • Support speaker and earphone output audio at the same time
  • Compatible with 3.3V and 5V platform.
  • Support 32-level volume adjustment


Supply voltage3.3V / 5V
Sampling rate8~48KHz / bit rate: 8~320Kbps
InterfaceI2C(Default I2C Address: 0x36) & Non-Changeable
OutputSpeaker/3.5mm Audio Jack
ResolutionSupport 32-level volume adjustment

Hardware Overview

Farees Ahmed

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