The @MakeHackVoid crew would love this one - a singing laser

This is clever - Chris DePrisco works with lasers. He found that different speeds and spacing of laser burns made different sounds. So he decided to program the laser to play a tune - Still Alive by Portal was his chosen tune.

Then he went further and arranged the laser burns on a sheet of metal to "draw" the Portal logo as it played.



More details about the task are on the Penny Arcade Report.

Hat tip to @Griffiths_John for the find.