KVM any power available?

N

Newfdog

Guest
Hi all...... I need to install a visual indicator for a KVM box
indicating which computer is selected. I am wondering where I can get
enough power to drive a couple of leds. The only possibility I see is
from the serial port, however I understand that only a few milliamps are
available there. Any suggestions?

Newfdog
 
"Newfdog" <newfdog2nospam@warp.nfld.net> wrote in message
news:XZC2e.7270$Ln.346058@ursa-nb00s0.nbnet.nb.ca...
Hi all...... I need to install a visual indicator for a KVM box indicating
which computer is selected. I am wondering where I can get enough power to
drive a couple of leds. The only possibility I see is from the serial
port, however I understand that only a few milliamps are available there.
Any suggestions?

Newfdog
Click to expand...

How about hooking into pins 4 (+5 Volt) and 5 (Ground) of a PS/2 port. You
should be able to get enough power from there. My KVM switch, has LED's
that show which PC is active, also it has it's own buffer which hooks into
the Keyboard and monitors for a hotkey combination. For this I'm assuming
that it's driving an IC, and a few other bits and bats.

Colin Dawson
www.cjdawson.com
 
Colin Dawson wrote:
"Newfdog" <newfdog2nospam@warp.nfld.net> wrote in message
news:XZC2e.7270$Ln.346058@ursa-nb00s0.nbnet.nb.ca...

Hi all...... I need to install a visual indicator for a KVM box indicating
which computer is selected. I am wondering where I can get enough power to
drive a couple of leds. The only possibility I see is from the serial
port, however I understand that only a few milliamps are available there.
Any suggestions?

Newfdog



How about hooking into pins 4 (+5 Volt) and 5 (Ground) of a PS/2 port. You
should be able to get enough power from there. My KVM switch, has LED's
that show which PC is active, also it has it's own buffer which hooks into
the Keyboard and monitors for a hotkey combination. For this I'm assuming
that it's driving an IC, and a few other bits and bats.

Colin Dawson
www.cjdawson.com


I never even thought of the PS2 port Colin, thanks, problem solved.
Click to expand...

Newfdog
 
Newfdog wrote:
Hi all...... I need to install a visual indicator for a KVM box
indicating which computer is selected. I am wondering where I can get
enough power to drive a couple of leds. The only possibility I see is
from the serial port, however I understand that only a few milliamps are
available there. Any suggestions?
Click to expand...
USB?
http://www.bitsex.net/news.php?news_id=12


--
MVH,
Vidar
 
"Newfdog" <newfdog2nospam@warp.nfld.net> wrote in message
news:XZC2e.7270$Ln.346058@ursa-nb00s0.nbnet.nb.ca...
Hi all...... I need to install a visual indicator for a KVM box
indicating which computer is selected. I am wondering where I can get
enough power to drive a couple of leds. The only possibility I see is
from the serial port, however I understand that only a few milliamps
are
available there. Any suggestions?

Newfdog
Click to expand...
A few mA is enough to light a LED. But why are you bothering to do thie
to begin with? At work our 8-port KVM switch does this by putting the
selected port on the CRT screen. Duh.
 
"Newfdog" <newfdog2nospam@warp.nfld.net> wrote in message
news:qFS2e.7656$Ln.357538@ursa-nb00s0.nbnet.nb.ca...
Colin Dawson wrote:
"Newfdog" <newfdog2nospam@warp.nfld.net> wrote in message
news:XZC2e.7270$Ln.346058@ursa-nb00s0.nbnet.nb.ca...

Hi all...... I need to install a visual indicator for a KVM box
indicating
which computer is selected. I am wondering where I can get enough
power to
drive a couple of leds. The only possibility I see is from the
serial
port, however I understand that only a few milliamps are available
there.
Any suggestions?

Newfdog



How about hooking into pins 4 (+5 Volt) and 5 (Ground) of a PS/2
port. You
should be able to get enough power from there. My KVM switch, has
LED's
that show which PC is active, also it has it's own buffer which
hooks into
the Keyboard and monitors for a hotkey combination. For this I'm
assuming
that it's driving an IC, and a few other bits and bats.

Colin Dawson
www.cjdawson.com


I never even thought of the PS2 port Colin, thanks, problem solved.
Click to expand...
For awhile maybe. All our new Dells no longer come with any PS2 ports.
All they have are 5 USB ports.

> Newfdog
 
Watson A.Name - "Watt Sun, the Dark Remover" wrote:
"Newfdog" <newfdog2nospam@warp.nfld.net> wrote in message
news:XZC2e.7270$Ln.346058@ursa-nb00s0.nbnet.nb.ca...

Hi all...... I need to install a visual indicator for a KVM box
indicating which computer is selected. I am wondering where I can get
enough power to drive a couple of leds. The only possibility I see is
from the serial port, however I understand that only a few milliamps

are

available there. Any suggestions?


Newfdog


A few mA is enough to light a LED. But why are you bothering to do thie
to begin with? At work our 8-port KVM switch does this by putting the
selected port on the CRT screen. Duh.


So fucking what..... I not at your work asshole.
Click to expand...
 
Watson A.Name - "Watt Sun, the Dark Remover" wrote:

For awhile maybe. All our new Dells no longer come with any PS2 ports.
All they have are 5 USB ports.
Click to expand...
lol....... could care less about dell, I would never buy that crap.
 
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