1. VS1053 audio decoding module can play various music formats, and also supports OGG real-time encoding recording.2. AVR processor is used for MP3 development, and SPI interface is reserved on the board for easy connection. SPI interface and lead out control signal 1 headphone and speaker output connector1 microphone for recording1 1ine_ In input interfacePower indicatorWorking voltage: DC 5V, capacitor filteringThe 3.3V and 1.8V LDO chip -1117 on the plate can 800mA current at Crystal oscillator operating frequency: 12.288MHzInterface description:: 3.5mm headphone interface: cartridge microphone for recording IN: input mode , used to select ADPCM recording source,If it is 0, the microphone input pin MICP and MICN are used,If it is 1, LINEIN is usedSPI: SPI download connectionProduct size: 45 x 45mmcolor:GreenMaterial:PCBPackage Contents:1 x VS1053 MP3 BoardOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.