PlantUML plugin for Moodle 2.4 tinymce editor

I’ve converted the PlantUML¬†tinymce plugin to work with tinymce used in Moodle 2.4.x.

Feel free to test it -> download

have fun


Trac Autocomplete User plugin migrated to jQuery 1.8.x

Hi there,

I’ve just migrated the Autocomplete-User plugin to work with the globale jQuery version (ui.autocomplete widget) used in the latest Trac versions.

Feel free to test it -> download

have fun


Syntax highlighting plugin for Moodle 2.4

I have just finished with the syntax-highlighting plugin for Moodle 2.4. The plugin is based on the rjinsertcode plugin for tinymce  done by Ryan Juckett.

Feel free to test it -> download updated (12.03.2013)

have fun


MedIt-ePortal moves to Moodle 2.4

Over X-Mas holidays I moved our Medit-ePortal Moodle to the¬†latest and greatest 2.4. Let’s check out the new goodies :-)

have fun


Some Impressions of our last Brussels / Medica Trip 2012

Some impressions of our last trip to Brussels and the Medica fair situated in Dusseldorf, Germany.

Every year Mr. Hoffland and his current semester are visiting the Medica, one of the world’s largest medical trade fair.

have fun


Thanks for visiting,… :-)

It is now almost two years since I started my blog. 2 Years with more than 100.000 visits.

Thank you all for visiting,….. :-)

have fun


Rankz – an innovative middleware for sports event ranking information distribution

In one of my last posts I wrote about a young company Rarebyte. The folks from Rarebyte are mainly focused in game development but they also have a great experience in building highly scalable middleware applications for sport timing respectively sport events.

They are named their product line Rankz.

Rankz is desigend for small to very large sports events with thousands of  athletes. Its purpose is to get detailed information about every aspect of a sport event in real time. It has already been successfully used at the

Rankz is also the central core layer in a student project called “IRONNET” (FH-Sportstiming) done by students from Network Engineering & Communication (NET) and is also the overall software basis used¬† by “FH Sportstiming” (NET).¬† An older version is also operated by Triangle Show & Sports Promotion Gmb.

The middleware uses spring core layer technologies which allows them to be highlight flexible. The data structures which specify the sport event can be entirely configured through XML. A full featured editor for XML/POJO  is also available. The interface to the timing database can also be configured through XML. For this reason you are neither limited by the used format of the timing data nor to the database engine. Rankz works out of the box with MySQL, PostgreSQL, Oracle, MSSql.

Furthermore Rankz uses a dynamic plugin system. So new features can be added very easily. Plugins can be loaded and unloaded @ runtime.


  • Superfast – detailed results nearly live during a race
  • Support for plugins (input, output, calculations)
  • Platform independent (completely written in Java)
  • Integrated webserver (Jetty)
  • Plugins:
    • Overall ranking
    • Ranking per split
    • Ranking in athlete’s age group
    • Relative ranking at certain splits
    • Timing, average Speed, finishing context,….
    • statistic system and missed time error correction system
    • FTP plugin upload
    • Athlete’s (geographical) real time position prediction.
    • SMS/MMS Notification Service
    • Athlete’s@Twitter …
    • Virtual Athlete’s rankings (audience favorite….)
    • Position estimation
    • RESTful resource connectors
    • Webservice Revision Layer
    • Distributed mode for sport events like wingsforlife
  • Query engine
  • RESTful interface
  • Web output for all plugins
  • CSV exports for all plugins
  • Android/iPhone¬† (iOS) applications for live data/timing visualization (special version for Event Moderator/sport commentators).
1 Comment more...

Moodle 2.3.x ajax marking block PostgreSQL compatibility fix

I just added the wonderful ajax marking block to our Moodle system. After little testing it seems that this block has some issues with our PostgreSQL backend.

In detail one of the major queries are aborting with the meaningful error message:

ERROR: failed to find conversion function from “unknown” to text

nice stuff :-)

It turns out that the usage of a “string as alias” are not handled correctly in postgresql, or so,… this part needs an explicit cast “::text”

If you also encountered this problem, you can download an updated query_base.class.php from -> here

have fun


Some Robot actions from our Robotic-Lab

This is a short video from one of our recently finished projects called FlexCell.

[local /files/2012/09/flexCellVideo.flv]

If you are interested to learn more of robot technologies and its wide range of use please visit our study program mechatronics.

have fun


NetLogo Filter for Moodle 2.3.x

Moodle Filter for Netlogo  files.

File links will trigger embedding of the Netlogo Java applets.

Download here

have fun


1 Comment more...

How to fix network mount access errors on Intel SS4400-E storage device

For the last couple of years we have been using  an Intel SS4400-E storage device for our internal backup stuff.

Suddenly the main RAID CIFS share stopped working. It seems for some reason nobody could mount this share anymore. All user got an access denied on mount attempts.

So what the hell was going on: The rather simple web interface wasn’t the burner, in fact the system log does not deserve the name Log :-)

So mostly every RAID in this class is based on an embedded system driven by our friend Linux. This one is no exception.

So we first need the most important part,…. a working telnet or SSH connection. But a first “test” connection to the SS4400 device gave us “connection refused”¬† as expected.

Luckily after some googling I found a hind that on this devices you can enable the SSH interface via a hidden CGI script.


Now you can login via “root” and your administration password.

By the way, this device comes with the Swiss Army Knife of Embedded Linux¬†BUSYBOX which I also use for my embedded projects. I’m working with Busybox sense 2004 (version 0.94x), ….. great stuff :-).

But it seems, INTEL has some GPL violation with these devices. lol, ..On our bundled CDs we didn’t get any GPL sources from Busybox and Co? This is only mentioned in passing.

In our case a look into the system logs indicates that our RAID share had some file system problems. INTEL uses XFS as the file system on the storage device. Our system log was filled up with error messages of the file access layer.

In our case the solution was really simple. On device startup the file-system reports that there are errors, but then the corrupt partition is mounted and then ,… kabudl……

To fix this you first have to detach the corresponding RAID with “NASdetach”. Now you can unmount the partition and run the XFS repair binary “xfs_repair“.

After 10 – 15 min the repair should be finished.

Reboot the storage device and you should be able to access your share.

have fun


iPod Touch 4gen broken glass fixing session

Some impressions of my last iPod Touch 4gen broken fixing session.

This beast took me more than 4 hours to get the glass + digitizer emerged :-)

(C) by Mario Wehr
iDream theme by Templates Next | Powered by WordPress