i3wm: change QT/GTK theme

If you'd like to change your window appearance, you can use systemsettings utility for QT windows and .gtkrc conf for GTK windows.

systemsettings is part of the KDE (included in kdebase-workspace package). Navigate to Application Appearance to change window theme:

GPIO 05-pwm

Raspberry PI has the ability to use PWM (pulse width modulation) to control width of the pulse sent on the GPIO pin, which provides better granularity to control connected devices, in this case LED.
This feature allows to control LEDs intensity, which can be used with RGB LED to mix colors.

GPIO 04-rgb

I finally got to the RGB LED and tried to connect it to Raspberry PI.
This first script (04-rgb.sh) is a modification of previous one. It uses one new feature though, associative fields in bash to distinguish between the three basic colors (RGB) and their combinations (Yellow, Purple, Light Blue, White) as shown on the figure:

The following figure shows how the LED is connected to GPIO.

owncloud: Authentication error

This issue has been bothering me from version 5. After some investigation, it turned out the owncloud's authentication was "compromised" by other services running on the same web server (nginx) using the same fastcgi processor.

Installing GitLab on Odroid (ArchlinuxARM)

This post summarizes all steps necessary to install GitLab on odroid. The steps are basically the same as in the official guide.
Additionally I show my nginx and HA Proxy configuration for gitlab with changed docroot (relative url root) and explain how to successfully install bundle packages without libv8 dependency.

keepalive.sh: send keepalive to remote server

This script is deployed on my odroid. It serves to keep track if the odroid has internet access and if it is alive. It uses simple keepalive sending via HTTPS protocol to a remote server. The remote server watches keepalive signals and will notify if they stop comming.

GPIO 03-leds

This script controls LEDs connected to the GPIO, however, it uses different approach. Instead of using python library to handle GPIO pins, is uses direct calls from shell. It is written in bash.