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schrankmonster blog


Last Build Date: Wed, 14 Sep 2016 06:20:10 +0000


How to weigh your cat! – the IoT version

Tue, 13 Sep 2016 18:47:44 +0000

This is Leela. She is a 7 year old lilac white British short hair cat that lives with us. Leela had a sister who used to live with us as well but she developed a heart condition and passed away last year. Witnessing how quickly such conditions develop and evaluate we thought that we can […]

the xenim streaming network SONOS integration now plays recent shows!

Fri, 31 Jul 2015 12:38:56 +0000

      Since I am frequently using the xenim streaming network service but I was missing out on the functionality to replay recent shows. With the wonderful functionality of Re-Live made available through ReliveBot  I have now added this replay feature and I am using it a lot since. Within the SONOS controller app it […]

Gaming: GTA V in Panoramic Views in 4k

Tue, 12 May 2015 20:39:00 +0000

Since games get bigger and bigger and their graphic gets more and more impressive I’ve made some panoramic views from In-Game with everything turned to 11.

Stitch Panoramic Views like a pro

Sun, 08 Mar 2015 18:12:19 +0000

I am using this for more several years now. Even though all my workflow happens on Macintosh computers these days I’ve kept this tool in my toolbox: Microsoft Image Composite Editor.   Now after along while with the 1.0 version Microsoft Research decided to release a new version of the free tool with even more […]

I wish there was: cheap network microphones with open source speech recognition

Wed, 25 Feb 2015 17:06:30 +0000

I was on a business trip the other day and the office space of that company was very very nice. So nice that they had all sorts of automation going on to help the people. For example when you would run into a room where there’s no light the system would light up the room […]

31st Chaos Communication Congress

Fri, 02 Jan 2015 12:53:17 +0000

  Like every year the Chaos Communication Congress gathered thousands of people in one place between the Christmas-Holidays and NewYears. Since I was out-of-order this year to attend I’ve opted for the Attending-by-Stream option. All Lectures are live-streamed by the awesome CCC Video Operations Center (C3VOC) and made available as recordings afterwards. Since the choice […]

Infinitely Bioshocking Panoramic Views pt. 2

Sun, 21 Dec 2014 08:56:14 +0000

Infinitely Bioshocking Panoramic Views

Sun, 14 Dec 2014 11:51:40 +0000

Here are just two of the panoramic images I’ve made while playing through BioShock Infinite this year. Gorgeous art!

in case of emergency: spoof your MAC address

Sun, 19 Oct 2014 07:21:37 +0000

    There have been several occasions in the past years that I had to quickly change the MAC address of my computer in order to get proper network connectivity. May it be a corporate network that does not allow me to use my notebook in a guest wifi because the original MAC address is “known” or any […]

Formula 1 is past – now it’s drone racing!

Sat, 18 Oct 2014 18:21:17 +0000

As racing cars with petrol engines gets more and more uninteresting for the masses and even Formula 1 faces competition by Formula E. Now having humans inside cars racing a wide track is one thing, but using relatively cheap but extremely high-tech multi-copters with first-person-view cameras mounted on them and flown by crazy guys sitting […]

Map, Search and Filter flights all around the world

Wed, 01 Oct 2014 06:08:10 +0000

“OpenFlights is a tool that lets you map your flights around the world, search and filter them in all sorts of interesting ways, calculate statistics automatically, and share your flights and trips with friends and the entire world (if you wish). It’s also the name of the open-source project to build the tool.” Source:

blast from the past: a Console Framework for .NET

Tue, 30 Sep 2014 06:03:19 +0000

“Console framework is cross-platform toolkit that allows to develop TUI applications using C# and based on WPF-like concepts.” Source 1: Source 2: Source 3:

when you’re working late: grant your eyes a rest

Mon, 29 Sep 2014 10:58:06 +0000

“Ever notice how people texting at night have that eerie blue glow? Or wake up ready to write down the Next Great Idea, and get blinded by your computer screen? During the day, computer screens look good—they’re designed to look like the sun. But, at 9PM, 10PM, or 3AM, you probably shouldn’t be looking at […]

Unlock PDF files

Sat, 27 Sep 2014 10:46:01 +0000

The next time you stumble across a PDF file with security and not allowing you to print or copy/paste. Do this: qpdf –decrypt “QPDF is a command-line program that does structural, content-preserving transformations on PDF files. It could have been called something like pdf-to-pdf. It also provides many useful capabilities to developers of PDF-producing software […]

Shaders in your browser

Sat, 27 Sep 2014 10:40:52 +0000

“Shadertoy is the first application to allow developers all over the globe to push pixels from code to screen using WebGL since 2009. This website is the natural evolution of that original idea. On one hand, it has been rebuilt in order to provide the computer graphics developers and hobbyists with a great platform to […]

a new Music Service for SONOS: xenim streaming network

Tue, 19 Aug 2014 19:23:55 +0000

I am a frequent podcast live-stream listener. And being that I am enjoying the awesome service called xenim streaming network. Any Podcast producer can join the xsn and with that can live-stream his own Podcast while recording. It’s CDN is based on voluntarily provided resources and pretty rock-solid as far as my experience with it goes. […]

How-To Set-Up your own Miataru server

Fri, 08 Aug 2014 11:07:23 +0000

Since a user of miataru asked about how to set-up your own miataru server I’ve decided to make a short screen recording of how you can do it with the help of Nitrous.IO:  

When your VU+ DUO just shows a red light and does not start up

Sat, 02 Aug 2014 12:58:48 +0000

So it happened to one of the VU+ Duos in the house. After a clean shutdown it did not boot up as expected but instead just showed the red light. It still blinked on remote keypresses and the harddisk spun up. Nothing else happened with it. So it was bricked. Reading the forums about that […]

Debugging Linux: Latency heatmaps

Sun, 27 Jul 2014 10:58:04 +0000

“Odd patterns of I/O latency can be hidden by line graphs and summary statistics, and revealed by histograms and heat maps. In my previous post I showed my Linux iosnoop tool, which can trace block device I/O along with timestamps and latency. This information can be visualized, revealing any odd patterns.” Source:

Do you need an alternative shell for your terminal?

Tue, 08 Jul 2014 19:36:23 +0000

“Commands have been a big part of computing ever since the 1970’s.  Their power comes from their simplicity.  Just type a word or two to do what you want.  The time has come to bring this power together with the usability and convenience of modern interfaces.” “Xiki is open and flexible.  It’s open source, and […]

Knight Rider: a conclusion

Tue, 08 Jul 2014 09:23:06 +0000

“Knight Rider ist wieder da! Nach Jahren des bangen Wartens zeigt RTL endlich wieder den jungen David Hasselhoff, der mit seinem “Wunderauto” auf große Verbrecherjagd geht. Knight Rider war Kult, Knight Rider ist Kult, und Knight Rider mit Bier ist Oberkult! Angeklebte Armaturen, deren Knöpfe beinahe beliebig in Farbe, Beschriftung und Anordnung variieren, während der […]

Next step: Holodeck.

Mon, 07 Jul 2014 09:10:11 +0000

“The Infinadeck is the world’s first affordable omnidirectional treadmill that is designed to work both in augmented and virtual reality.  This revolutionary device provides the missing link making it now possible to have a true Holodeck experience. You might say, “Reality just got bigger”.” Source:

Nitrous – full IDE in your browser – with Collaboration!

Sun, 06 Jul 2014 09:54:23 +0000

“Nitrous is a backend development platform which helps software developers save time by cutting out the repetitive parts of creating development environments and automating them. Once you create your first development environment, there are many features which will make development easier.” So what you’re getting is: a virtual machine operated for you and set-up with […]

Scaling Linux: Perfomance Tools and Measurements

Sun, 06 Jul 2014 09:09:52 +0000

  If you ever experienced a missmatch between the performance you expected from a server or application running on Linux you probably started to debug your way into it why the applications performance is not on the expected levels. With Linux being very mature you get an enormous amounts of helpers and interfaces to debug […]

How to get a list of all recent Podcasts on SONOS

Wed, 02 Jul 2014 17:19:34 +0000

I am using an external podcast download tool to stay updated on all podcasts I subscribed to. For this purpose SubSonic is a good choice – actually for a lot more also. One of the quirks of the SONOS products is that Podcasts are not really well supported. In fact there is no support at […]

Boblight Alternative: Hyperion

Sat, 28 Jun 2014 07:17:14 +0000

After setting up Boblight on two TVs in the house – one with 50 and one with 100 LEDs – I’ve used it for the last 5 months on a daily basis almost. First of all now every screen that does not come with “added color-context” on the wall seems off. It feels like something […]

APN Changer for iOS – when you’re abroad and in need of different mobile provider settings

Fri, 27 Jun 2014 11:49:09 +0000

When traveling you might find yourself in the situation that you get a new SIM card into your iPhone and it’ll start and do it’s automatic magic for you. And eventually you well end up with the right provider settings by default. But there are some cases when it picks the wrong provider settings. Like […]

using the RaspberryPi to make all SONOS speakers support Apple Airplay

Wed, 25 Jun 2014 10:38:57 +0000

Airplay allows you to conveniently play music and videos over the air from your iOS or Mac OS X devices on remote speakers. Since we just recently “migrated” almost all audio equipment in the house to SONOS multi-room audio we were missing a bit the convenience of just pushing a button on the iPad or […]

How to use the Tokyo public transportation system as a visitor

Wed, 21 May 2014 17:16:29 +0000

Being in Tokyo as a visitor brings a lot of challenges. Since you gotta use the public transport offers to get from A to B. Now we had the same challenge this May and this is how we tried to solve it. Problem: How do you know which train lines you take and where they […]

how to get mobile Internet (3G / LTE) in Japan

Tue, 20 May 2014 08:03:26 +0000

If you visit Japan the next time and you want to get perfectly good Internet access while there on your mobile phone I can recommend the b-mobile offer. On my last stay in Japan (May 2014) I tried their service for the first time and I was not let down. They give you two options: […]

Need to do Load Tests? Try Tsung!

Mon, 19 May 2014 15:59:22 +0000

Tsung is an open-source multi-protocol distributed load testing tool It can be used to stress HTTP, WebDAV, SOAP, PostgreSQL, MySQL, LDAP and Jabber/XMPP servers. Tsung is a free software released under the GPLv2 license. The purpose of Tsung is to simulate users in order to test the scalability and performance of IP based client/server applications. […]

did you know that the marriage rate in Ohio correlates with legal executions? Spurious Correlations!

Sun, 18 May 2014 15:58:41 +0000

I took notice of a website called “Spurious Correlations“. It seems that it collects all sorts of correlating statistics to proof the point of how important context is to statistics. Enjoy! Source 1:

new Webcams of Bamberg – even a panoramic one!

Mon, 05 May 2014 12:57:29 +0000

We’re living near a very nice city called Bamberg. And after a long time there are new Webcams availabel for anyone to look at. Even a 360 degree panoramic view! Source 1: Source 2:

Tokyo Trip ahead

Sun, 04 May 2014 20:58:03 +0000

Stay tuned here for at least some coverage of this years Japan trip.

MOSH (Mobile Shell) – fixing SSH for everyone

Sun, 04 May 2014 11:36:48 +0000

How many times did you experience a connection loss on your terminal window in the last week? Yeah I know – like everytime you close the lid of your notebook and move to a different place. So like a dozen times every day. And everytime you reconnect to your servers and you use things like […]

TIME_WAIT – how does it work?

Sat, 03 May 2014 11:34:44 +0000

The purpose of TIME-WAIT is to prevent delayed packets from one connection being accepted by a later connection. Concurrent connections are isolated by other mechanisms, primarily by addresses, ports, and sequence numbers Source:

when javascript equality checks, always use ===

Sun, 20 Apr 2014 10:34:25 +0000


IPv6 native root server has problems with OpenFire Jabber / XMPP Server to Server

Sun, 20 Apr 2014 10:22:03 +0000

I was setting up a new root-server machine and went for the Debian 7 minimal set-up. Thankfully the root-server provider I am using (hetzner) is connected with IPv4 and IPv6 natively. Awesome stuff! If you’re using an IPv6 native set-up these days you STILL have to be cautious about possible side-effects with software having bugs […]

Find out how words translate in europe

Fri, 11 Apr 2014 20:01:26 +0000

“Enter one or two lower-case English words to see translations from Google Translate.”  

The Data Visualisation Catalogue

Tue, 01 Apr 2014 12:12:05 +0000

“The Data Visualisation Catalogue is currently an on-going project developed by Severino Ribecca. Originally, this project was a way for me to develop my own knowledge of data visualisation and create a reference tool for me to use in the future for my own work. However, I thought it would also be useful tool to […]

Brackets: a multi-platform editor written in javascript – including NodeJS

Mon, 31 Mar 2014 12:02:16 +0000

“Brackets is an open source code editor for web designers and front-end developers.” On the first tries it’s an awesome thing to have all that JavaScript debugging, Live HTML editing and what-not in one place. Give it a spin. Source 1:

weave your net of things that have internet…ehm – internet of things

Sun, 30 Mar 2014 11:24:40 +0000

“The internet of things” is a buzzword used more and more. It means that things around you are connected to the (inter)network and therefore can talk to each other and, when combined, offer fantastic new opportunities. Yeah right. So NodeRed is a NodeJS based toolset that allows you to create so called “flows” (see picture […]

How to fix a mono CS0589 Internal compiler error during parsingSystem.FormatException error on the RaspberryPi

Sat, 29 Mar 2014 11:15:37 +0000

When you want to compile some C# code using MONO on Linux on your RaspberryPi and you encounter this strange error message: error CS0589: Internal compiler error during parsingSystem.FormatException You need to do: Update your Debian by running: sudo apt-get upgrade sudo apt-get update Upgrade your RaspberryPi firmware: sudo rpi-update Reboot your RaspberryPi Retry compiling […]

ZFS Tutorial

Sat, 29 Mar 2014 10:59:26 +0000

“ZFS is really the final word in filesystems. With a feature set longer than this tutorial, it can take a while to master. You can set many more options per dataset, enable disk usage quotes and much more. Once you’ve used it and seen the benefits, you’ll probably never want to use anything else. Hopefully […]

I give you: the SONOS Audiobook / Podcast Auto Bookmarker – never lose your Listening Progress again…

Sun, 23 Mar 2014 15:26:28 +0000

Since the SONOS system I’ve bought turned out to be highly hackable I’ve spent some quality-time this weekend fixing the worst downside I’ve found so far that the SONOS system had for me I am listening to a lot of Podcasts and Audiobooks. And it turns out that those two Genre are not particularly good […]

Let the SONOS hacking begin!

Sat, 22 Mar 2014 21:40:00 +0000

I always wanted a networked multi-room audio solution as you can easily see here and here and here and here. Now it seems I’ve finally found something that integrates very well into our music listening habits and our infrastructure. And on top of that it turned out to be highly hackable. I’ve went with SONOS […]

How to install NodeJS and NPM on the RaspberryPi without getting “Illegal Instruction” error messages

Sat, 22 Mar 2014 16:37:46 +0000

I tried a couple of times to compile NodeJS on the RaspberryPi and failed miserably. It not only takes ages to compile NodeJS on the Pi. After the successful compile and install run most of the time running it just results in an error message “Illegal Instruction” or “Ungültiger Maschinencode”. Now there’s a pretty easy […]

On-Screen OCR – helps you when all you get is an image…

Wed, 19 Mar 2014 11:45:23 +0000

“You want to extract one paragraph of text from a pdf your coworker sent you? One quote from your professor’s presentation? A couple of code lines from this tutorial clip on your favourite movie platform? It’s just one hotkeypress away. OCR everything on the fly. Condense is the product of many frustating years of using […]

DRAD.IO – “made for mobiles” german radio livestream

Tue, 18 Mar 2014 09:41:49 +0000

Having live streams of common german news radio handy when in other countries is essential. Here’s a good offer (not made by the radios :-)) Source 1:

when in Japan – get free Wifi

Mon, 17 Mar 2014 07:39:10 +0000

On a trip in Japan and feeling disconnected? There’s a lot of Wifi around and some of it is free:   Source 1: