Check out the video below to learn more about the DIY Arduino laser engraver constructed using the innards from an old PC DVD player.

A tape can be selected and placed in the player, and the Arduino at the center of it will recognize the tag and play the corresponding MP3 file stored locally on an SD card.

Paul Rea builds an Arduino and Lego-based robot to pick up his piles of old burned CDs and DVDs, rip them, and throw them away.

[schollz] made a tape synth with not much more than a variable-speed playback cassette player, an Arduino, a DAC, and a couple of wires to hook it all up.