Processing of recursively defined XML objects with DataStage

Recursively or not… Sometimes people get a bit over enthusiastic with define XML data objects using many XSDs including recursively defined objects in them. So basically defining objects with a definition of themselves… More or less… So as this can be fun to the person who creates them, this can be a pain to others. […]

Raspberry Pi cluster with MPICH3 and MPI4Py

As there are more out there I created a Raspberry Pi cluster as well. And like the others it starts of with a shopping list: 1 Raspberry Pi 3B (just because I already had one) 4 Raspberry Pi 3b+ 1 6 port USB charger 5 ethernet patch cables 5 micro USB cables 1 (cheap) ethernet […]

433mhz Arduino RF transmitter for HFY608A

So I have a set of small RF remotes that came with some led lights. This is how one of them looks like: I own a Homey and was wondering if and how it was possible to access the led lights by using the Homey and not these remotes. At this moment it took me […]

Processing of undefined XML occurrences with DataStage

Recently I got a question related to processing of an XML sample like this: The challenge in this case is to link some kind of team identifier to each of the players. As you can see there is no team data at all so the only identifier possible is the occurrence number of the team […]

The Internet of Things

The Internet of Things (IoT) refers to uniquely identifiable objects and their virtual representations in an Internet-like structure. The term Internet of Things was proposed by Kevin Ashton in 1999 though the concept has been discussed in the literature since at least 1991. The concept of the Internet of Things first became popular through the […]

Stream Computing and MQTT: A Simple Sample

In this topic I will be receiving data with IBM InfoSphere Streams using a highly volatile protocol from a sending source. Received data will be stored into a local file. The concept I am using is called pub/sub or the publish subsrcibe pattern. We need a few components to make this possible: IBM InfoSphere Streams […]

C# Mqtt Client

In this topic I will be sending data from a C# client using a highly volatile protocol to any other client that might be interested in this data. This concept is also called pub/sub or the publish subsrcibe pattern. We need a few components to make this possible: C# client A messaging protocol (used by […]

Mosquitto Mqtt Broker

In this topic I will be setting up a Mqtt broker. This broker will be the center of the publish subsrcibe pattern being using in this and related topics. We need a few components to make this possible: The small device with client software (for publishing). For more information goto this topic A messaging protocol […]

Arduino Mqtt Client

In this topic I will be sending data from a small device using a highly volatile protocol to any other client that might be interested in this data. This concept is also called pub/sub or the publish subsrcibe pattern. We need a few components to make this possible: The small device with client software (for […]