Turn On/Off Keyboard LEDs via commandline

xset led 3
Usefull as a light blink to remember events, mails, intrusions, etc... yet another output Since nobody ever uses the scroll lock function... Usefull to interface a linux system with some hardware, for example, opto interfacing the keyboard led to a relay to remotely reset, etc. ( a simple LDR glued over the LED will do the trick ) xset led 3 turns on the third led, ie, Scroll lock xset -led 3 turns it off xset led 1 turns on Numerical Lock led ( doesn t work on all computer ) xset led 2 turns on Caps Lock led ( idem ) Using it as a reset watchdog, the relay expected light pulses. Shall the computer hangs, the relay releases and reset the machine ( discharge of a capacitor ) ;-)

5
By: m33600
2009-10-23 00:25:56

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What Others Think

Awesome!
DaveQB · 451 weeks and 5 days ago
Any CLI ascii to morse translators around?
rbossy · 451 weeks ago
this is what I call an idea!!!
m33600 · 450 weeks and 6 days ago
Try this: http://freshmeat.net/projects/morse2led/ (it's in the AUR if you have Arch Linux)
matthewbauer · 450 weeks and 1 day ago
I found that setleds worked better. Usage: setleds +num < /dev/tty7
matthewbauer · 450 weeks ago
Happy Xmes! while true; do setleds -D -num < /dev/tty7; sleep 3; setleds -D +num < /dev/tty; done
Heoa · 443 weeks and 1 day ago
err while true; do setleds -D -num < /dev/tty7; sleep 3; setleds -D +num < /dev/tty; sleep 3; done
Heoa · 443 weeks ago

What do you think?

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