go-luxafor

README

goluxafor

A little script to manage colors of Luxafor LED devices

How to use

You must compile for the platform where is going to be executed.

The available parameters are:

• -d (1-n) device where command will be performed
• -r (0-255) intensity of red color
• -g (0-255) intensity of green color
• -b (0-255) intensity of blue color

To turn on a color you have to know the RGB codes. For example, if you want to turn on the leds of your device with a green color, you could use the following command:

• ./luxafor -g 255

Maybe you have multiple Luxafor LED devices. You can select which device will receive the commando using -d parameter. For example, you can send the command to another device with this command:

• ./luxafor -d 4 -r 255 -b 255

If you want to turn off the device, execute the command without color parameters:

• ./luxafor

Real use example

I have a Raspberry Pi 3B+. I can use it combined with a bash script to monitor RPi CPU temperature and switch colors when it's too high. The script was compiled for arm5 and copied to /usr/bin/to be able to execute simply using luxafor command.

Then a bash script is executed as cron job each minute to check the temperature and send the proper command to the device:

#!/bin/bash

MIN_TEMP=52
MAX_TEMP=56

cpu=$(</sys/class/thermal/thermal_zone0/temp)
cpu=$((cpu/1000))


echo "CPU temperature is: $cpu ºC"


if [ "$cpu" -lt $MIN_TEMP ]; then
   luxafor -g 20
elif [ "$cpu" -ge $MIN_TEMP ] && [ "$cpu" -lt $MAX_TEMP ]; then
   luxafor -r 20 -g 20
elif [ "$cpu" -ge $MAX_TEMP ]; then
   luxafor -r 60
fi

The possibilities are multiple. Use your own imagination :-)