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Posts Categorized: Allgemein
GWT Proxy Servlet
When developing GWT applications, you will eventually reach the point where debugging your client with the GWT embedded Jetty is no longer is feasible and you would like to debug it against an already existing servlet or JEE container (local Tomcat/WebLogic/Websphere, integration or development machines, etc. you name it). This is the moment where GWT… Read more »
Ivy Repository for my GWT Stuff
All my GWT stuff will from now on be available in my Ivy repository, available at http://ivy.pelle.io/repository/. Resolver configuration for Ivy settings file: 1234<url name="gwt-commons"> <ivy pattern="http://ivy.pelle.io/repository/[organisation]/[module]/[revision]/[type]s/[artifact].[ext]" /> <artifact pattern="http://ivy.pelle.io/repository/[organisation]/[module]/[revision]/[type]s/[artifact].[ext]" /> </url> Dependency for Ivy file: 1<dependency org="de.pellepelster" name="gwt-commons" rev="latest.integration" />
Humanized Messages for GWT
While working on a GWT project, I had to display various messages to the user and wanted it to do it in one of this fancy-schmanzy transparent overlays that fade out after some time, since in my opinion this is the most unobtrusive way to do this while still pretty well noticeable to the user…. Read more »
Import jars with Ivy
While converting a java project that was built using ant to a java project built with ant and Ivy, I came across the problem (as well as many others if I can trust Google) that some of my dependencies were not available in one of the usual public repositories (http://search.maven.org, …). What I needed was a solution… Read more »
Project motorized timelapse slider 5
The new bipolar stepper and the new controller arrived, a first quick test showed that the new motor is finally strong enough. The new motor controller also has four digital inputs, so it should be possible to add two switches to detect when the slide has reached the end of the rail.
Project motorized timelapse slider 4
Here are the first pictures of the slider during construction. Sadly the unipolar stepper is to weak to move the slider, so I had to swallow the bitter pill and replace the unipolar setup with a bipolar one (currently on the way). There are stronger unipolar motors on the market, but they are hard to… Read more »
Project motorized timelapse slider 3
For control of the stepper motor I decided for a USB stepper motor controller from Phidgets Inc. (PhidgetStepper Unipolar 4-Motor). They provide a high level interface for stepper motor control with binding for many languages (Java, Python, Ruby, C, C++, C#), so I don’t have to fiddle with the nasty details of stepper motor control…. Read more »
Simple IO Benchmark
Sometimes I need a quick IO performance overview for a Linux system. The last time I got bored of manually typing dd commands and aggregating the output so I wrote a little script to do that for me. Please don’t rely to heavy on the results benchmarking with dd isn’t very accurate (even when using… Read more »
Project motorized timelapse slider 2
My first plan was a simple dolly with rubber wheels running on aluminium rails, driven by a stepper motor connected to a slider by a simple cord. This was until a friend of mine (who happens to be a mechatronic technician, yay lucky me!) proposed the following setup: A being a threaded rod will hopefully… Read more »