Analog Gauges for PC stats

[Galliano]

Ive been thinking of how to make my upcoming build to look more like an aircraft and I thought what about having an analog rpm gauge like the one belong

Im just wondering if anyone has or seen this done. 

 

Ive seen a few that receive info via electricity instead of mechanical. So could it be wired to a fan or through a fan controller

 

 

 

I think that along with an aircraft clock set at an angle on top of my case it look alright along with some of these done the front as intake fans

and 

[gylmir]

i haven't done this before but it is possible.

 

if you use a potentiometer between the fan power and the rpm meter you can set the max rpm of 12v to what your fan max speed is. and from the moment you drop down the voltage the rpm meter will go down to.

 

or the opposite if you want to have some hardcore profile if you put them on full speed to get the meter go all the way up to 35 and silent mode lower, it will not give an accurate rpm but then its more for show.

[Stefan1024]

@Galliano

 

Most mechanical gauges works like this:

gear movement -> generator -> analoge voltage -> coil with attatched needle.

A normal fan migth not be powerful enougth to dirve a mechanical gauge.

 

Since it is very easy to generate an analoge voltage with an PWM fan header, it's better to take one that uses an analoge voltage directly. It's also silent while the gear can make quite a lot of noise.

If you can fine a electrical one and if possible a datasheet, than you can send me a personal message and I can design an controll circuit for you (most likely 2 resistors and 1 cap).