Author Archives for Manuel Dewald

A Christmas Poem

December 19, 2018 7:31 am Published by Comments Off on A Christmas Poem

1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031 #include <stdio.h>/* A CHRISTMAS POEM * * Christmas is near, * brings relaxed atmosphere. * The devs are staying at home, * feeling bored like a stone. * * Left the winter outside, * but still not satisfied. * They are missing their code, * yet so tired of node. * * And if this feels like you - * here is something to do. * Celebrate! It's written in C:... View Article


Blogpost: CloudFoundry Summit Europe 2018

December 18, 2018 7:31 am Published by Comments Off on Blogpost: CloudFoundry Summit Europe 2018

After attending CloudFoundry Summit 2018 in Basel in October, I published an event summary together with my colleagues. This writing summarizes the talks that where interesting from the perspective of us as BOSH developers. You can find the post on the community page of SAP. Recap and collected replays: Cloud Foundry Summit Europe 2018 — thanks @ManuelDewald and team! #cfsummit @cloudfoundryhttps://t.co/t7b6NjplyN — SAP Cloud Platform (@sapcp) 6. November 2018 Watch all talks online via the youtube playlist.


Define interfaces in a duck typed language like ruby

October 5, 2018 6:55 am Published by Comments Off on Define interfaces in a duck typed language like ruby

In Java, it is very intuitive how interfaces are defined and used. You just create an interface in a similar way you would create a class and derive the classes, implementing the interface. interface Drivable { public void drive(int meters); public void stop();}class Car implements Drivable { public void drive(int meters) { //start the engine //go for it } public void stop() { //stop the engine }}class Bagger implements Drivable { public void drive(int meters) { //start engine //start left... View Article


RaspberryPi NAS

July 27, 2018 7:47 am Published by Comments Off on RaspberryPi NAS

Guest Series at opensource.com After my recent first guest article on https://opensource.com the first part of a series about creating a Raspberry Pi based NAS has just been published. You can read it here. There has been a surprising amount of twitter reactions to the article and it seems it also collected more than a thousand visits on the first day. Building a network attached storage device with a #RaspberryPi https://t.co/PrNwRsZnjr via @opensourceway by @manueldewald #RPi #OpenSource #FOSS — Juha Remes (@jremes84)... View Article


Use Ansible to clone & update private git repositories via ssh

July 7, 2018 7:21 am Published by Comments Off on Use Ansible to clone & update private git repositories via ssh

One of the first things I wanted to do when I started using Ansible was to clone a git repository on a remote machine as I keep configuration, scripts, and source code in github or gitlab repositories. Things that are not meant for the public, I store in private repositories that I want to clone via ssh. Cloning and updating them I now want to automate with Ansible. There are different ways to go for this task: Checkout the repo locally and copy it... View Article


Guest Post on opensource.com: “Try this vi setup to keep and organize your notes”

June 19, 2018 9:14 pm Published by Comments Off on Guest Post on opensource.com: “Try this vi setup to keep and organize your notes”

Today my first blog post on opensource.com has been published, please have a look at it if your are, similar to myself, interested in an easy, intuitive, synchronized way to keep your notes. You can find it on the opensource.com blog or just by following this link. Thanks to the opensource.com team for collaboration and editing, I hope I will get the chance to write another one soon!


Thoughts on Members vs. Parameters

May 17, 2018 6:38 am Published by Comments Off on Thoughts on Members vs. Parameters

Yesterday in a longer refactoring session, we stumbled across some open questions when it comes to member variables vs function parameters. In a function with a huge number of parameters, we decided to create new class(es) to split this mess up a bit. As the new class first contained only one public function – because we moved one function out of a bigger class – we had to decide which of the parameters to choose for the input of the... View Article


Quick and Dirty Java Service Template

December 25, 2017 1:04 pm Published by Comments Off on Quick and Dirty Java Service Template

To get a java service running, you don’t always need to start a tomcat and deploy a war file, as described in an earlier blog post. Even if tomcat gives you a number of benefits, such as user management and database connection handling, sometimes you do not need this and just want to start up a small http server to provide a bit of functionality. The template contents To get such projects started as fast as possible, I created the... View Article


PLA Print Settings: Print bed temperature

October 17, 2017 7:42 pm Published by Comments Off on PLA Print Settings: Print bed temperature

Yesterday, I found this useful model by SpaceFanatic on thingiverse: https://www.thingiverse.com/thing:1002024 and wanted to print it, using golden eSun pla (http://www.esun3d.net/products/144.html).Unfortunately, when printing on a 60°C print bed with my lulzbot taz 6 (which is the cura lulzbot edition preset for eSun PLA), I recently had problems with the bed adhesion of PLA. The printbed has been cleaned with alcohol before the print has been started. You can see the problem in the following images of the first print attempt. Of cause,... View Article


Minimal steps for modelling 3D prints in Blender

October 4, 2017 9:20 pm Published by Comments Off on Minimal steps for modelling 3D prints in Blender

When I started 3D printing, I decided to go with blender for modelling my objects. I made this decision as it simply was the only 3D modelling tool I knew and had used before. It can do much more than you need for modelling for 3D printing: Things like textures and shading are not necessary and therefore you don’t need to get an expert in those topics but only need to know the basics of modelling to get started. Here... View Article