Students [Berk Gokmen] and [Justin Green] developed an RP2040-based LED-illuminated lightsaber as a final project with a bit of a twist. It has two unusual sound-reactive modes: disco mode, and vowel detection mode.
This is a companion discussion topic for the original entry at https://hackaday.com/2023/12/29/sound-reactive-light-saber-flips-allegiance-via-vowel-sounds/