Upright Laser Harp

If you enjoyed the project and learned something new, please consider donating to my Patreon at HACKADAY: INSTRUCTABLES: Laser harps are musical devices with laser beam When the beam is blocked, a note is played by the instrument. Usually laser harps have the beams travel vertically in the shape of a fan or vertical lines. In this project, I built a laser harp with stacked laser beams that propagate horizontally. The beams reflect off mirrors to form square shaped beam paths. Instead of a MIDI output like my previous laser harp, this device has builtin MIDI player so the output is an audio signal. This means the device does not have to be connected to a computer or MIDI player keyboard) to play sound. Both builtin speakers an audio output jack are available for playing music.