I run VC on a computer that is headless (connected to TV for debuting only) ... and often I am unaware of the sate of VC ... so I was looking for a solution .... until few days ago I stumbled upon this software

http://slicksolutions.eu/ledsdriver.shtml

which enables controlling up to three LEDs connected to serial port or the ones in a keyboard ...

so I picked and old USB to serial adapter, my soldering iron, some remains of old computer and put together the super simple circuit explained in the web page ( I cancelled the resistors, as the LEDs where a bit dim)

then a quick VC command based on VC state events ... and problem solved ...

next step is to see if I can make bluetooth version ... to free the USB port and have the less portable or even create multiple and spread them over the apartment so I can no VC state everywhere ...

I've also created similar with a arduino 

http://www.youtube.com/watch?v=YfyJO7AmMXA

this works also without the LCD screen.

 Kalle for sure arduino rocks .... however this one wins in terms of simplicity and cost, it can be done in less then $5 ...

I am waiting for multicolor LED then I can connected internally to MB USB connector and replace the case light with one that changes colors following VC ...

You can do an Arduino Nano version for less than $10.  Just saying.  I'm not saying it's better, but obviously you have more sophisticated options with an Arduino.

Quote from: Haddood on April 24, 2014, 02:35:56 PM...and replace the case light with one that changes colors following VC ...

That would be very cool. 

... and I think it is easier to create a wireless version with arduino.

Haha, ok James - one day in June is reserved to play with our arduino stuff 

Quote from: Haddood on April 24, 2014, 02:30:18 AM( I cancelled the resistors, as the LEDs where a bit dim)

Be careful with your new LED.  I don't know what your actual voltage is but I thought RS 232 could go to +12 volts and some LEDs will burn out at around +5 volts or higher.  Even if they don't explode right away running them too hot will shorten their life a lot I think.

If you can, measure the voltage across your current LEDs and compare to the specs for what you are buying.  If you can't, then start with a resistor and if it is not bright enough, try one with a bit lower resistance, rather than just removing it.

I'm speaking from experience...

James ... if you have a true RS232 then you are right voltage can be up 12v .... this is the true specs .... but with USB to RS232 the signals are at TTL level so shouldn't be a problem ...

Quote from: jitterjames on April 24, 2014, 02:46:15 PM
You can do an Arduino Nano version for less than $10.  Just saying.  I'm not saying it's better, but obviously you have more sophisticated options with an Arduino.

that is sweet ... will check it out