This is MIT student Tyler Christensen’s Tesla coil hat, which — in the name of sheer comedy — he programmed to play the theme from Mortal Kombat (recently) and Harry Potter. Sadly, strapping a Tesla coil to one’s head isn’t always the best idea — the hat blew up before he could show it off on Halloween.
https://gizmodo.com/mortal-kombat-flash-rave-harasses-passers-by-with-deadl-5856722
[TC-Engineering via Boing Boing]
