My friend Alan over at HackedGadgets has done it again! He needed to cool his external (networked) hard drive more efficiently, so he made a hard disk PWM-controlled fan that automatically detects how fast the hard disk is working and adjusts accordingly.
I have an external Ethernet enabled hard drive that is connected to my LAN and it gets lots of use. I have noticed that after a few hours of hard use the case is quite hot to the touch. I’m sure the design is fine and the heat that is generated is within the tolerance of the drive but I wanted to give it some ventilation and some forced air cooling. This project adds a cooling feature that only functions when it’s needed.