instrument-a-day 16: singing flower

[video link]

Spinning flower sings Mozart!

A hastily-constructed Max patch reads a midi file and turns it into rotation speeds for the motorized flower. Based on the wooden synthesizer and an idea by John Glover.

You can actually see the motor seize up when it tries to hit the high note the second time.

instrument-a-day 11: cacophony organ

[video link]

Inspired by yesterday’s LED candle with a hidden song, I set up an arduino to transmit 16 different notes on 16 LEDs simultaneously. (The notes are laid out like the bass keys of an accordion, though you can’t really tell.)

The optical receiver hears all the notes at once, unless you cover some of them up.

Bonus: the flickering LEDs do crazy things to a cell phone camera.

The underlying idea and the arduino code (available here) are nearly identical to the Jeltone from a few years ago, just transmitting the sound through light instead of skin conduction.