If you happen to reside in a serious metropolis, you’ve in all probability seen a road performer with some number of slapophone. It’s a easy musical instrument that usually makes use of totally different lengths of PVC pipe to behave as resonant cavities. When struck with an implement like a flip-flop, they launch a boring however nice tone. [Ivan Miranda] determined to construct such an instrument himself and went even additional by giving it MIDI functionality. Test it out within the video beneath.
[Ivan’s] design makes use of a easy trick to supply a variety of notes without having numerous particular person pipes. He constructed 4 telescoping pipe assemblies, every of which might change size with the help of a stepper motor and a toothed belt drive. Lengthening the cavity produces a decrease word, whereas shortening it produces the next word. The 4 pipe assemblies are electronically managed to supply notes despatched from a MIDI keyboard, all beneath the command of an Arduino. The pipes are struck by specifically constructed paddles fabricated from yoga mats, once more managed by giant stepper motors.
The ultimate result’s giant, power-hungry, and vaguely playable. It’s a bit of unconventional, although, as a result of shifting the pipes takes time. Thus, keypresses on a MIDI keyboard set the pipes to a given word, however don’t truly play it. The slapping of the pipe is then triggered with a drum pad.
We love bizarre devices round these components.
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