How to play MP3- and WAV-Files from a Micro-SD-Card with the WT2003M03 Module by Waytronic. Only Key Control Mode (Control with three buttons: Play/Pause, Previous, Next).

Build with the WT2003M03 Module from Waytronic. This is only a tutorial for the Key Control Mode, NOT for One Line Serial Communication (will follow soon). This Module supports MP3- and WAV-files. You can use maximum a 32GB Micro SD-Card, with maximum 65487 audio files.

On the Fritzing sketch have the buttons (from left to right) the following functions: Play/Pause, Next, Previous.