Messages in this thread | | | Date | Thu, 31 Jul 2003 01:31:39 -0700 | From | jw schultz <> | Subject | Re: PATCH : LEDs - possibly the most pointless kernel subsystem ever |
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On Wed, Jul 30, 2003 at 05:08:34PM +0100, John Bradford wrote: > I'll buy some LEDs and build a parallel port connected LED panel > tomorrow... Do you think the overhead of driving the LEDs would have > too much of a negative effect on system performance? If so, or if we > want more flexibility, maybe we could work out a design for a PCI > card, which could include more than 12 LEDs - 7-segment numeric > displays of pid, etc.
If you are going to talk special hardware i'd suggest making it a USB device instead of a PCI card.
Most systems manufactured in the last five years or so ago have USB but laptops don't and many servers don't have a spare PCI slot. There is enough power specified by the standard to make it a passive device in most cases. If you want you could use a cable long enough to mount the display on the wall outside the wiring closet or server room.
Sounds fun so have some.
-- ________________________________________________________________ J.W. Schultz Pegasystems Technologies email address: jw@pegasys.ws
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