CPU load monitoring using GPIO and leds

[chteuchteu]

Hello !
I wrote today an article on my blog about CPU load monitoring (using GPIO and leds) on Raspberry's. It is really simple (written in a little shell script), but I think it can be useful (for people who want to learn leds stuff on their R. Pi)

There are 5 leds turning on and off regarding the CPU load:
- CPU < 20%: 1 led
- CPU < 40%: 2 leds
- CPU < 60%: 3 leds
- CPU < 80%: 4 leds
- CPU < 90%: 5/5 leds
- CPU >= 90%: 5 leds flashing

Here is the article: it is written in French, but you can just watch the Youtube video and download the code at the bottom of the article.
http://www.chteuchteu.com/2012/10/26/ra ... e-au-gpio/

If you find any errors in the code, you can post a comment on the article. Thanks !

[chteuchteu]

Up
Any code enhancements ?

[bgirardot]

My only comment is: Thank you very much, I found the code to be educational. I like doing things from shell scripts and found your approach far superior to my current approach.

[chteuchteu]

My only comment is: Thank you very much, I found the code to be educational. I like doing things from shell scripts and found your approach far superior to my current approach.

Thank you !

The article is now available in english ! (comments are also in english):
http://www.chteuchteu.com/2012/11/05/ra ... sing-gpio/

[jagoda]

Thank you for your article ...
I will try and incorporate it and expand on it in the various RaspberryPi workshops and courses I am
involved in developing
(http://ftt/co.uk)
(http://www.absolutebeginners.uk.com)

[chteuchteu]

Thanks !

[gridrun]

Yeah! Blinkenlights! Reminds me of the BeBox, pretty cool.

[MattHawkinsUK]

The script is great. I'm modifying it to work with my BerryClip 6 LED board.

One thing I noticed is that the script does not flash the LEDs. The function is defined to flash the LEDs but it is not referred to in the script.

[chteuchteu]

Thanks for the reply !
Yes indeed. It is a function I written but I'm not really using it in the main part of the script: I left it in the code in case of someone would use it

[pyrater]

Do you still have the 5 led version?