HorstBaerbel

Setting up a Qt 5 CMake project for Visual Studio and Linux

CMake is cool, Qt is cool. Both together not so, if you don’t know what you’re doing. This describes how to build a Qt project CMakeLists.txt so everything works and how to run / debug your application in Linux and Visual Studio. Make sure to additionally check out the Qt5 CMake docs and the CMakeContinue reading “Setting up a Qt 5 CMake project for Visual Studio and Linux”

Building and installing the MP4 / M4A / AAC plugin for Mixxx 2.0 / 2.1 on Ubuntu

This is a pita. You’ve installed and set up Mixxx, but your .m4a files are not shown in the library. You need to compile Mixxx from source, but it is fast to do so. Here’s how. I tested this on Ubuntu 16.04.02 LTS 64bit and it will build Mixxx 2.0 / 2.1 under “/mixxx”. YmmvContinue reading “Building and installing the MP4 / M4A / AAC plugin for Mixxx 2.0 / 2.1 on Ubuntu”

Stream hardware-encoded H.264 video from a Raspberry Pi to a web page using WebRTC

I use the wonderful 3D printing distribution OctoPi (which in turn uses OctoPrint) on a Raspberry Pi Zero to start and monitor my 3D prints. It has built-in webcam functionality, which means you can monitor your printer and see in the web interface if the print is going well or not – really nice! TheContinue reading “Stream hardware-encoded H.264 video from a Raspberry Pi to a web page using WebRTC”

Setting up the XYZ Da Vinci 1.0A 3D printer with RepetierHost and Slic3r on Ubuntu

I finally bought a 3D printer. It’s a used one and entry level, but printing parts is good fun. Here’s how to set it up on Ubuntu 14.04: Install Repetier firmware The new firmware will give you much more control over the printing process. Mine was already installed (v0.92), so I upgrading to the 0.92.10Continue reading “Setting up the XYZ Da Vinci 1.0A 3D printer with RepetierHost and Slic3r on Ubuntu”

Hiding the mouse cursor in Kodi

I use Kodi with a touchscreen and wanted to hide the mouse cursor, but NOT disable mouse input. This can be done by using a 1×1 transparent PNG file as the mouse cursor. Find out what skin you’re using and where your skin directory is. For me this is “estouchy” and its directory is /usr/share/kodi/addons/skin.estouchy.Continue reading “Hiding the mouse cursor in Kodi”

Properly setting up a 5″ HDMI touchscreen for Kodi on Raspbian

Wow. This was a royal pita. I wanted to build this wake-up-light-alarm-clock-media-thingy for my girlfriend. Well, I got my hands on a RPi Zero and needed an LCD display. I found this nice-looking “WaveShare 4″ IPS display” on Ebay and spent days trying to get it to work properly. You want a hint? DONT DOContinue reading “Properly setting up a 5″ HDMI touchscreen for Kodi on Raspbian”

Adding backlight control to a 5″ HDMI screen (and Kodi)

So the screen from here is working in Kodi now (LCD datasheet / pinout), but it draws a lot of power when the backlight is on (~200mA extra). We want to turn at least the backlight off, leaving the touchscreen active so we can interact and wake it up again. Buuut the LCD has noContinue reading “Adding backlight control to a 5″ HDMI screen (and Kodi)”

Building a mobile magnet lamp / flashlight from repurposed parts

I needed a mobile “flashlight” in my car you could simple attach somewhere to the chassis where you’d need it. The are plenty of offers on the interwebs, so could have simply bought one, but I (as usual) had some parts lying around…I had: A spare 12Wh Li-Ion battery left over from my Kodi carContinue reading “Building a mobile magnet lamp / flashlight from repurposed parts”

Building a Kodi in-car entertainment system using a Motorola Atrix Lapdock and an Odroid C0

Watching movies in the car is great fun. It is even better when you have a camper and lie in your comfy sleeping bag – I needed an in-car entertainment system.I have a stereo in the car already that can even play videos, but the screen is small, codec support is limited and it isContinue reading “Building a Kodi in-car entertainment system using a Motorola Atrix Lapdock and an Odroid C0”

Using the Easybox 803A (Arcadyan ARV752DPW22) with OpenWRT 14.07 / 15.05

The Vodafone Easybox 803A has nice router hardware. I found one on the trash recently and decided to put OpenWRT on it. Here’s how. This is based on the instructions found in the OpenWRT wiki, the OpenWRT forum and random bits on the net. UPDATE 2: I have updated the post to make it clearerContinue reading “Using the Easybox 803A (Arcadyan ARV752DPW22) with OpenWRT 14.07 / 15.05”