3D Printing
Scad4J – A Parameterized 3D Quadrotor¶
I was struggling quite a bit to integrate the parameters into the Scad4J API. Here is an example which demonstrates how we can use the Scad4J library to build a simple RC quad.
3D Printing
Modules in Scad4J
I tried to build some complex models with Scad4J and realised that the generated code is getting quite unreadable. So it would be useful if we could use modules to structure our models. Here is an example how we can use the Scad4J library to build a first DRAFT of a simple RC airplane. We demonstrate how to use modules.
3D Printing
Parametrized Cork Pals in Scad4J
Cork Pals are toys that utilize 3D printing and recycling. Use a wine cork to connect two 3D printed pieces and there you have it. In my experience not all corks were always fitting: one cork side might be too big or too small – so I decided to make it customizable. All my designs can be found on Thingiverse. In this Gist I demonstrate how to load my OpenScad models from Github with the Read more…
3D Printing
Hinges in Scad4J
I am about to design a model RC plane. In order to attach the control surfaces to the body I am planning to use some hinges. Fortunately there is a ‘Parametric Hinge’ written by ‘Rohin Gosling’ that can be used in OpenSCAD. In this Blog I will check out how we can use this in Scad4J. Here is a quick Gist that demonstrates how we can use this library in Scad4J.
3D Printing
Solid Modelling for 3D Printing for the JVM in Jupyterlab
I bought myself a 3D printer and I thought it would be cool to program the models in Jupyter. I am currently doing quite some development in Scala so a JVM based solution running in Jupyter would be my preferred option. Most of the people use some GUI driven CAD or Graphics Modelling Tools like Blender to develop 3D models. There are only a few lean, easy to learn options that focus on specifying the Read more…
Data Science
Is Trump good for the Economy ? – The Evolution of Company Profits and R&D
Donald Trump is the best, smartest, most beautiful, richest, youngest … President that was ever elected in the US. He is also the best that could happen to the profites of the companies which are located in the US. But is this actually true ? We use the values from the Edgar database to analyse the profits of the filing US companies over time. The result can be found in the following Gist
Infrastructure
Identity Management and Authentication for Java Webservices and Javascript GUIs
I am currently working on a new project which uses Vue.js on the frontend and JAX-RS Webservices implemented in Java in the backend. Both, the frontend and the backend will be deployed with Docker. The solution will need to manage customers, users and provide authentication to protect the web application and web services. It does not make any sense to build my own solution for this so I decided to base my architecture on some Read more…
Infrastructure
Docker and Treafik – A Comprehensive Tutorial
In Docker you expose functionality by specifying a port mapping and then you can address the application on the physical host with the mapped port. I am using Docker quite some time now and this was getting a little bit too tedious because each mapped port needs to be unique and then you need to remember the port numbers to be able to start your application. So I wanted to simpler way by using speaking Read more…
Infrastructure
NFS in Docker-Compose
My main Docker deployments are on a single linux server. I have a central ‘data’ directory where I keep my common data. The application specific data or settings are stored in /srv/. But for testing or demos I am usually using local Docker installations on my McBook or McBook Air under OS/X. I am using NFS to access the shared central data. In this Blog I give a quick overview of the setup: Install the Read more…
EDGAR
Using the ‘Smart EDGAR’ Library to Access EDGAR Filings
The initial concept of Smart EDGAR was to provide the tools to download the data from the EDGAR website and – store the information as local files – store the information in a SQL database – provide reporting functionality from this data We have extended the functionality a little bit so that the Smart EDGAR Library can be used without having any data available locally. So we also provide – an API which retrieves the Read more…