Another interesting aspect of this project is that the hardware also includes fan controllers which allows for fine tuning the fog's density. By independently controlling each fans, the fog density could be improved by limiting the fans' speed to a certain arbitrary degree; the optimal display setting seems to be achieved by making the four fans facing towards you at a higher speed and the other four fans away from you at slower speed. At higher speed, the front facing fans reduce jitter effect while the fans at the back increases the fog's density. If all fans goes on full speed, the jitter decreases but fog density is lower, making the display less opaque and the opposite will occur if the fans goes slower; jitter increases, fog is much more dense meaning more opacity.