I have converted a wooden sideboard in my front room to discreetly house my PC base unit and peripherals, and another to house my stereo and sky box. Both have their backs removed, and use adapted shelving. The issue with the cabinet housing the PC is the heat that builds up when the doors are closed over (for example if I want to stream music when guests round). It is fine with doors open if working by myself.
Does anybody know of a way that I can use a base unit fan, embedded in a suitable venting hole in the side of the cabinet, which will also power up and down automatially by being linked to a USB slot for example. Even better - that will also use an additional cabinet temperature to control fan to reduce unnecessary noise (e.g. when temp acceptable).
Can this be done? Will it operate 'silently'? Does a product already exist, or is it a trip to Maplin?
Perhaps you could use a smallish version of a kitchen window extractor fan in the front and in the back of the cabinet - at front to suck cool are in (and subsequently through the pc) and at the back to suck warm air out.
A USB port only delivers a maximum of 500mAh, no where near enough to drive a "base unit fan".
If you are prepared to provide a venting hole or holes in the top of the side of the cabinet, you could either fit mesh grille on the inside to allow hot air to escape or, alternatively, fit computer case fans powered from the computer system's PSU.