Ghostbusters Proton Pack with Arduino and LASERS!: "Last year, I was a Ghostbuster for Halloween. It was pretty cool, but I had some problems with the costume. I decided to do it again, but get it right this time. I picked up a khaki flight suit instead of blue coveralls, built a trap and some ecto goggles, and made some major refinements to proton pack. Here I will share with you how I went about the various improvements to my costume."