This is a fun one.
It’s also a testament to how nifty and easy it is to quickly whip up a project with Arduinos, provided you have enough of a “critical mass”, as I’ve called it before, of other stuff that you might end up needing.
How was this one born? Well, there was a Halloween grad student party our school was throwing, on a Friday night. It’s… honestly, really the type of thing I, or any grad student, should go to. We’re mostly isolated from other grad students, and these parties have typically gotten pretty raucous when I’ve gone to them. However, that night, I really wasn’t feelin it. I got home from work/the gym kind of late, hadn’t eaten, and the party was downtown. I think it might’ve also been raining or something, adding to the “I don’t want to go out” side of the scale.