The audio player was built using an SD memory card and the ATtinyX5 series 8-pin AVR microcontroller. The SD audio player is able to output a wide frequency range audio signal since the ...
We’re definitely pretty fond of the DIY MP3 players here at Hackaday, but we don’t think we’ve seen one like CartridgeMP3 from [jpet26] before. All the electrical components are what we’ve come to ...
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