When creator mattb_138’s parents were cleaning out their house, he came across an old cassette player and decided to upgrade it with MP3 capabilities and an RFID interface.
The newly-enhanced device uses an Arduino Nano for control, along with a DFPlayer Mini module to play songs stored on a microSD card. An RC522 reader enables him to select tracks based on RFID cards, printed with their appropriate album art.
The cassette player’s internals are kept largely stock, using a potentiometer to adjust the volume of the original speakers. Two buttons are also implemented with long and short press functionality, allowing for pause/play, skip, shuffle, and selection between A/B “side” of each card.
You can find more details on the upcycled project — which was inspired by the Juuke RFID player — in mattb_138’s Instructables tutorial.
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