It is easily to drop it in your project or make an mp3 player using your microcontroller. Features Can play a variety of music formats, support for OGG encoding real-time recording SPI interface, the control signal lines are led out A headphone and stereo output. A microphone for recording a line in input interface Power indicator 3.3V and 2.8V of LDO chip AMS-1117 on board, provides up to 800mA current a single power supply: +5 VDC 12.288 MHz crystal TF cart slot. Features A line in input interface Power indicator 3.3V and 2.8V of LDO chip AMS-1117 on board, provides up to 800mA current A single power supply: +5 VDC 12.288 MHz crystal TF card slot
