Hacking an mp3 player

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Mp3board.jpeg 

Parts:
*Cheap mp3 player
*PAM8403 Audio amplifier
*UA78M33 voltage regulator
  • On the back the [VOLUME +] button is soldered to be connecting.
  • this makes the mp3 player start up automatically, and put the voltage up.
  • Add a potmeter for volume control
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