Friday, June 30, 2023


This little gizmo was super simple to hook up and run.  The DFPlayer Mini MP3 Player for Arduino is a small and inexpensive MP3 module with direct output for a speaker. The module can be used as a standalone module with battery, speaker and pushbuttons or in combination with an Arduino UNO or any other controller with RX /TX capabilities. It has a built-in amplifier rated at 3 watts that is volume adjustable to 30 levels, and EQ adjustable to 6 levels.  The audio data is stored on a Micro SD card.  The SD card must be formatted in FAT16 or FAT32 format.  Once the card is formatted, MP3 files can be copied to it. They are played in the order in which they were copied to the card. The DFPlayer should be able to manage up to 100 folders with up to 255 MP3 files. A 32 gigabyte Micro SD card can hold 555 hours of audio in 128 kilobytes per second MP3 format.  85,102,75,0,B

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