Tweakers · Technology

Hobbyist converts cassette tape into mp3 player

A hobbyist has converted an old Walkman into an mp3 player, with music played via a modified cassette tape.

The project combines an old cassette player with an mp3 player. A special 'cassette tape' contains the necessary hardware, including an ESP32 with an SD card, a sound card, and a battery.

The 600mAh battery provides up to ten hours of listening time. A rotary sensor detects when the player's gears start to turn after pressing the play button.

A sound card converts the digital music into magnetic pulses that the cassette player can read and convert into analog sound.

Many components, such as the gears, are 3D-printed. The project is purely for hobby purposes and has no practical application beyond playing music via the physical buttons of a cassette player.

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