Tech blog, projects and tutorials

Web Engineering, Mobile, IoT and DevOps (incl. virtualization)

/Tech blog, projects and tutorials/

Upgrade node / NPM on Windows

You could run [crayon-58acb69e5d090370747554-i/] to update your node, but you should go for: Open a Powershell as Administrator Set the Execution Policy the right way, with unrestricted rights: [crayon-58acb69e5d09b755476012/]   Install the npm-windows-upgrade package as global: [crayon-58acb69e5d0a0947066462/] Finally, run the updater and choose your desired version: [crayon-58acb69e5d0a4584654873/] Upgrade node on Windows   According to stack

By | September 10th, 2016|Internet and Web Engineering|0 Comments

Online Experimentation: Emerging Technologies and IoT

A new book I was involved in with a chapter about "Unified Remote and Virtual Lab Solutions for Engineering Education" was just published. It took now some time to get it edited and finally printed, but it was worth the time to wait for. Here  a part taken from the foreword, written by Mark Schulz from

Upgrading Wireless Light Control System via CLI

I got stucked while upgrading the Wireless Light Control System from Dresden Elektronik through the web interface. The deCONZ software just closed when I invoked an update. To work with this issue, one can just start the upgrade process manual via CLI. I write it down here, as I haven´t found it documented anywhere else. Log in

Let’s encrypt your server / (Bitnami Product Stack) – Updated!

I changed this tutorial on 2016-01-26 as I recognized, I missed to mention one of the config files, where you have to add the certificat files, too. The tutorial works with the final version of Let's encrypt, even when written in Beta phase. As I just wrote in a blog post before, Let's encrypt

Let’s Encrypt is Trusted

Let´s encryptMit dem 19. Oktober werden die Zertifikate von Let´s Encrypt nun in allen wichtigen Browsern als vertrauenswürdig akzeptiert. Damit ist der Grundstein gelegt um eine weite Verbreitung finden zu können. Einige Jahre lang verwende ich nun schon Zertifikate von Startssl oder aber CAcert. Leider haben sich die Anbieter nie wirklich etablieren können. Mit Let´s Encrypt sehe

Die ARD und ZDF – Onlinestudie 2015 und die digitale Kluft

Zum 12.10.2015 haben ARD und ZDF eine neue Version der seit dem Jahr 1997 publizierten Online-Studie auf der Internetseite bereit gestellt. In der Pressemitteilung von ARD und ZDF heißt es: "Die Anzahl derer, die das Internet täglich nutzen, ist 2015 um 3,5 auf 44,5 Millionen (63%) gestiegen. Zugenommen hat auch die Unterwegsnutzung: mittlerweile greifen 30,7 Millionen (55%)

By | Oktober 15th, 2015|Internet and Web Engineering, Mobile|1 Comment

Vagrant behind a proxy server

If you are using Vagrant behind a proxy server, you should go for installation of [crayon-58acb69e5e5ef987907726-i/]. But how to install this plug-in when you are currently limited by a proxy? Set your proxy on Windows, open a command prompt and enter: [crayon-58acb69e5e5f6168983557/] Set your proxy on Linux, open a command prompt and enter: [crayon-58acb69e5e5fa672605573/] After that

Holistic blended framework for Research and Education in Mechatronics and Computer Science

  “If real is what you can feel, smell, taste and see, then ’real’ is simply electrical signals interpreted by your brain” Laurence Fishburne, The Matrix, 1999   The 'Holistic blended framework for Research and Education in Mechatronics and Computer Science' (BLC) consists of a technical and a didactical part. These parts are accompanied by those