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Carousel with mechanical lap counter

published by Volker Wegert on 31. December 2013 - 0:00

Another video that I somehow managed not to mention here. Somebody - Yeti? - inspired me to play with time lapse videos; I ended up using Time Lapse Assembler, and I think it worked out OK.

Marble Coaster (with track switch, ejector, electronic control)

published by Volker Wegert on 15. December 2013 - 0:00

For some obscure reason, I forgot to mention the video on my own site when posting it - well, here it is.

Marble Coaster - Parcours 1

published by Volker Wegert on 30. December 2012 - 0:00

Since there is little enough happening on this site right now, here's the result of "Christmas Present" + "Vacation" + "Wanting to try out this YouTube Thingy".

ABAP Trapdoors: Death By STRING

published by Volker Wegert on 21. November 2011 - 0:00

This is a repost of an article published on the SAP Community Network.

As in the previous post, this one is a trapdoor to be avoided by framework and toolkit designers rather than their users.

ABAP Trapdoors: Type Lock-In

published by Volker Wegert on 5. October 2011 - 0:00

This is a repost of an article published on the SAP Community Network.

In the past ABAP Trapdoor blogs, I've written about various problems that can occur when actually writing code in ABAP. Today's issue is more about a structural or design problem. For this example, we'll use the following class hierarchy:

CHANGING-Hierarchy-0002.png

ABAP Trapdoors: LOOP Dizziness

published by Volker Wegert on 28. April 2011 - 0:00

This is a repost of an article published on the SAP Community Network.

First off, I'd like to apologize for the delay since my last ABAP trapdoor article. I'm really grateful for all of the kind responses I'm getting for these articles. However, having a 14-months-old toddler around invariably implies having all kind of germs around, and some of them apparently teamed up to knock me out for some time...

Eclipse PDE Headless Build: To Order!

published by Volker Wegert on 24. April 2011 - 0:00

If your product-based Eclipse PDE Headless Build seems to work just fine and creates some archives with files and executables inside, you might still experience one ugly problem:

Unable to acquire application service. Ensure that the org.eclipse.core.runtime bundle is resolved and started (see config.ini)

Eclipse PDE Headless Build: Beware of OpenJDK / Debian

published by Volker Wegert on 24. April 2011 - 0:00

If you're setting up a linux box to run an Eclipse PDE headless build and by choice or accident end up using a Debian system and again by choice or accident installed the OpenJDK, you'll probably see the following p2 director error message after enabling the p2 integration:

One or more certificates rejected. Cannot proceed with installation.

ABAP Trapdoors: Morphing Method Parameters

published by Volker Wegert on 25. March 2011 - 0:00

This is a repost of an article published on the SAP Community Network.

ABAP Trapdoors: The Myth of the Instance Constructor

published by Volker Wegert on 7. March 2011 - 0:00

This is a repost of an article published on the SAP Community Network.

Arguably one of the most misleading field values in the entire ABAP Workbench is this one:

AT-Constructor-InstanceMethod_mw.png

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