Ninja Shadow Warrior in its first phases used the Arduino to attach the Closet Light Start Button (modded with Normally Open Momentary Switch instead of On-Off Switch). It was being a bit unreliable, so I changed to just connecting it to a mouse — Syed from Babycastles suggested it! I used a Logitech Mouse that Syed had left over from one of his One Button workshops. Here are the wires I used to connect it to the Closet Light Start Button. I brought 4 back up start buttons to Paris, in case the start button busted during the show.