Here is a project my bother and I have been working on, in the end there will be a dummy hooked up to an electric motor to simulate electocution. A light flicker box will also be hooked up giving the elusion of electocution with additional lighting and sound effects and smoke machine. Also the video below shows what happens when the onlookers go up to the chair to pay there final respects. More information and pictures coming soon on how this will all look when completed.
Here is a video clip of the electric chiar with pnumatics hooked up sorry the picture is side ways, just turn your head
Here is the chair from the back view
Here is our finished electric chair completed with dummy, this puppy is very intense to watch, I will be adding video later this week of the prop in full motion.