I'm not sure how well known Processing is within the HN community, but in the media arts and education space, Processing is pretty famous.
I met Casey at a festival once and he was a remarkably kind and interested person. I think his playful approach to technology shines through in projects like the sketch machine.
Probably relatively well known due to its usage in some Arduino projects.
I rarely, if ever, see a Processing/Arduino project. I do a lot with Arduinos, including interactive art, but maybe I'm hanging with the wrong crowd.
Everyone is commenting how neat this is and all I got is some dots that follow my line? Then I tried to clear all frames and now it just draws a fat blobby line that doesn't move anymore?
But this is an even better idea, drawing in a finite piece of space AND time, for its own sake. Thanks for the discovery!