hiya..
thanks for that.. i like the idea or feeding it into my parallel port
as i have a few unused so ill start coding a lil prog to make it all
pretty ;-)
thanks alot
alex
> Black and Red are the 12V power for the fan.
> Yellow is an open collector output that changes state 4 times per
> hi
> i have one of those 3 wire fans on my cpu. My question is how do i measure
> the rpm of my fan from it. not through software like lm_sensors but in real life
> ie so it dosent even have to be in a pc.
>
> Is there some kind of eq i can use so i can measure the voltage across the 3rd
> wi
On 9 May 01, at 17:38, Alex Salmon wrote:
> hi
> i have one of those 3 wire fans on my cpu. My question is how do i measure
> the rpm of my fan from it. not through software like lm_sensors but in real life
> ie so it dosent even have to be in a pc.
>
> Is there some kind of eq i can use so i c
On Wed, May 09, 2001 at 05:38:31PM +0800, Alex Salmon ([EMAIL PROTECTED]) wrote:
> hi
> i have one of those 3 wire fans on my cpu. My question is how do i measure
> the rpm of my fan from it. not through software like lm_sensors but in real
> life ie so it dosent even have to be in a pc.
>
> Is
ooh ooh ooh
you learn this in high school physics
you need a stobe light with a controllable frequency
you point it at it and adjust it till the blades stop
at that point your frequency is a multiple of the fans
frequency.
Youll find as you lower the frequency the blades will
move again and then
Alex Salmon wrote:
> i have one of those 3 wire fans on my cpu. My question is how do i measure
> the rpm of my fan from it.
rpm --query --speed -p fan
Mike :-)
--
Michael Lake
Active caver, Linux enthusiast and interested in
hi
i have one of those 3 wire fans on my cpu. My question is how do i measure
the rpm of my fan from it. not through software like lm_sensors but in real
life ie so it dosent even have to be in a pc.
Is there some kind of eq i can use so i can measure the voltage across the
3rd wire and get a
