Case modder [SXRguyinMA] decided to make his NZXT Tempest EVO unique by crafting a system that automatically opens or closes top-mounted vents based on the temperature of his computer. There's even a supercap in the circuit that will close the vents when the PC powers down or when power is unexpectedly lost. I wonder which case maker will be the first to attempt something similar
With some careful measurements he modeled the parts in Sketchup and sent out for them to be cut from styrene with a water jet cutter. The parts came back looking great and the assembly of the shutters went swimmingly. The bezel also includes a lighted screen for temperature information, as well as the front USB ports, headphone and mic jacks, etc. Hidden underneath is an Arduino board and servo motor. The Arduino polls the temperature and drives the servo to adjust the fins accordingly.