3 ms·
It's an LED on a tiny PCB with an inductive loop around it. One of the images in the gallery has a picture of it. The ultrasonic puffs of air keep it suspended
by edmundhuber 9y ago
It's an LED on a tiny PCB with an inductive loop around it. One of the images in the gallery has a picture of it.
The ultrasonic puffs of air keep it suspended.