Playing a violin requires far more finesse than just dragging a bow across its strings. There are subtle nuances in motion, pressure, and speed required that take years to master. Or, you can wait for Dylan Menzies to perfect his easy-to-play optical O-Bow and just skip all the practice and rehearsals.
Instead of strings, the instrument is essentially a smooth copper cylinder with a dented groove that holds the bow as it’s dragged across. At the bottom of that groove is an illuminated optical sensor that tracks the bow’s speed, angle, and position, allowing different notes to be played, including the vibrato effect stringed instruments are known for.
via Gizmodo
