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Possible to add a CPU LED?

D

DellAxim

Gawd
Joined
Feb 14, 2003
Messages
999
I'm building a wooden case for my new computer...I'm just wondering, is it possible to add a CPU activity LED just like the one for the hard drive?
 
Well...might as well just have a constant light on when you turn your computer on.....
 
The CPU is technically working all the time, just at varying rates. Whether or not it's possible to add an LED that would only light at a certain percentage of CPU load, I'm not sure. It would have to be software-driven with probably a custom serial-port or similar interface for the hardware, and now you're getting into things I have no clue about. Perhaps someone else can help you further there.
 
Indeed the only way to have some sort of LED CPU usage display is by using some piece of hardware connected by usb/serial/printer port and driven by software. You're probally easier off mounting an LCD/LED/VFD display that most people use, such as these.

mnewxcv said:
isnt the hdd too?
Click to expand...

The difference is a HDD can actually have 0 activity (reads/writes) where as this is never the case with a CPU, its always handling interrupts and various OS functions. Even at "0%" (below 1%) cpu utilization that can still represent around 20-200 million cycles on a modern processor.
 
you could have a line or square of leds that show the amount of cpu being used..that would be interesting
 
Yep, software driven. Xoxide used to sell a tachometer kit, that had a tach driven from the serial port, if I remember right, that would measure cpu usage. They discontinued that, though, and I haven't had any luck finding the software elsewhere.

If anyone has it or finds it, it'd be cool to see a link for it posted here. :)
 
i really like the idea here though, but you would have to interface with usb or something like that and write scripts and drivers to run it
 
You could interface it with the parallel port on the back of your computer easily enough!
 
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