ENRaspberry Pi and SPI 8x8 LED matrix example with Java and Pi4j
While looking for a cheap and nice component to demonstrate the use of SPI (Serial Peripheral Interface) I found out thi...
ENOpenWeatherMap forecast on LCD with Raspberry Pi, Java and Pi4J
Pi4J contains helper methods to minimize the work needed to use certain hardware modules on the Pi with Java. As an exam...
ENReactive Spring Flux data from a Pi
Trisha Gee (Coder, blogger, speaker, Developer Advocate at JetBrains, @trisha_gee), which I interviewed for "Chapter 4: ...
ENControlling a LED number display with JavaFX and Python on Raspberry Pi
In my book I explain the use of bits and bytes by using a shift register SN74HC595 IC and 5101AS LED number display. ...
ENCreating a timeline image with JavaFX
To create some timeline images for my book, I created this little JavaFX application to be able to easily update the con...
ENCalculating resistor value with a JavaFX application
Using the Java library I created (see previous post), it was a piece of cake to create a JavaFX UI on top of it! Sour...
ENResistor color codes and calculations as a Java Maven library
Next step in my book progress, is getting more into the details of hardware components. And as always starting with the ...
ENRaspberry Pi history, versions, pins and headers as a Java Maven library
The best way to understand and learn something new, is to document it yourself. That's what I'm doing in every step for ...
ENJust a thought - Beware of the Partner Acceptance Factor
I first learned about the "WAF" at work during a lunch discussion between engineers, on self-made domotica projects. App...
ENControlling Arduino with Mosquitto and JavaFX on Raspberry Pi
One of the example applications in my book "Getting started with Java on the Raspberry Pi" combines a JavaFX application...
ENThe mystery of the negative byte value in Java: a story of bits, bytes, signed and unsigned
Some time ago there was a question on the Pi4J-forum caused by some confusion about a numeric value handled as a byte wh...
ENLED number display JavaFX library published on Maven
My very first open source JavaFX library is now available in the Maven repository! A small step for mankind, one giant l...
ENDIY Arduino MIDI instrument
And another summer project got finished... ;-) My sons drum corps teacher triggered me to build an Arduino Midi contr...
ENMaking a DIY drum booth
What do you get if you combine a drum-playing son and a father who doesn't like to spend thousands of euros? A DIY drum ...
ENMission accomplished! The finished drum booth.
As a summer project requires, this project required a summer to get completed ;-) I still need to think about a big (...
As a summer project requires, this project required a summer to get completed ;-) I still need to think about a big (...
ENSelecting sound isolation
To work out my box-in-a-box I needed two types of materials: something "fluffy" for the walls, and something "strong" to...
ENQuick start Java development with Visual Studio CodeTo work out my box-in-a-box I needed two types of materials: something "fluffy" for the walls, and something "strong" to...
Great move of Microsoft! They provide an all-in-one installer for Java dependencies and Visual Studio Code. Take a lo...
ENClean Raspberry Pi GPIO testing with the Breadboard Pi Bridge
Some time ago I ordered a "Breadboard Pi Bridge - Pi Ports to Breadboard in Numerical Order" and reworked my Pi test set...
ENPi4J to easily work with the hardware of a Raspberry Pi with Java
What is Pi4J See https://www.pi4j.com/1.2/index.html This project is intended to provide a friendly object-oriented ...
ENPi4J - Extending with a JavaFX info application
While trying out what Pi4J can do, I found it could easily be extended with a JavaFX application to provide info about t...
While trying out what Pi4J can do, I found it could easily be extended with a JavaFX application to provide info about t...
ENPi4J - Adding a REST interface with Spring Boot
As I was learning Spring Boot myself, I thought the easiest way to learn was trying to build an example and write about ...
ENPiJava overview: Java 11 and JavaFX 11 on Raspberry PIAs I was learning Spring Boot myself, I thought the easiest way to learn was trying to build an example and write about ...
As my daily work mainly is Java and back-end stuff on "real servers", I set myself for 2019 as a personal goal to experi...
ENPiJava - Part 6: JavaFX 11 application on Raspberry PI with TilesFX and GPIO
What we will do Based on the previous blog posts we can install and run Java 11 we have a minimal JavaFX 11 applica...
What we will do Based on the previous blog posts we can install and run Java 11 we have a minimal JavaFX 11 applica...
ENPiJava - Part 5: Running the minimal JavaFX 11 application on Raspberry PI
In part 2 of this blog series Java 11 was successfully installed on a PI. And in part 4 a running Java FX jar was gen...
In part 2 of this blog series Java 11 was successfully installed on a PI. And in part 4 a running Java FX jar was gen...
ENPiJava - Part 4: Building a minimal JavaFX 11 application with Maven
I prefer a Java app above a web app, because starting a new "modern" web development requires you to pull a bunch of dep...
I prefer a Java app above a web app, because starting a new "modern" web development requires you to pull a bunch of dep...
ENPiJava - Part 3: What is Java FX?
What is JavaFX? From the Oracle site: "JavaFX is a set of graphics and media packages that enables developers to design...
What is JavaFX? From the Oracle site: "JavaFX is a set of graphics and media packages that enables developers to design...
ENPiJava - Part 2: Installing and running Java 11 on a Raspberry PI 3 Model B+
After my first (and failed) attempt to get Java 11 running on an old Raspberry PI, I bought a brand new 3 Model B+ versi...
After my first (and failed) attempt to get Java 11 running on an old Raspberry PI, I bought a brand new 3 Model B+ versi...
ENPiJava - Part 1: Trying to run Java 11 on an old Raspberry PI
One of my goals for 2019 is experimenting with the latest Java and JavaFX versions on a Raspberry PI. After my experimen...
NLTafelspelletjesOne of my goals for 2019 is experimenting with the latest Java and JavaFX versions on a Raspberry PI. After my experimen...
Een JavaScript experiment Ik had nog eens zin om een VanillaJS experimentje uit te werken en een 8-jarige die niet graa...
ENPong on a Raspberry PI
As a self-study project I experimented to create a Pong game + slide shown on a Raspberry PI with Tkinter, GPIO and phys...
NLRadio-DJ voor één uur
Voor "internationale broer-zus dag" kreeg ik de kans om nog eens mijn radio-stem van onder het stof te halen en samen me...
NLPokkekaarten
Pokkemonkaarten zijn de nieuwe-oude rage van het moment in de school van onze bijna-zeven-jarige. En dan begin je als ou...
ENSearching for online privacy
I have to admit, yes, I'm social addicted. Although I'm not the person who starts talking to everyone in real life. But ...
NLWeg met Latijn?!
Zo nu en dan barst er weer eens een gezellige discussie los pro en contra Latijn. Wie mij wat kent, zal mijn mening wel ...
NLBLOOVI: CoderDojo organiseert MegaDojo voor 1024 kinderen die willen leren coderen
De laatste jaren is het belang van een sterk STEM-beleid steeds duidelijker geworden. Science, Technology, Engineering e...
NLWe zijn allemaal proefkonijnen in de handen van Google, Facebook,...
Zoals velen maak ik ook gebruik van alle online tools die het leven gemakkelijk maken. Google, Dropbox, Facebook, Klout,...
ENBye bye Wordpress
I've always be a fan of Wordpress, Easy to set-up, to maintain, add themes and plugins... But this site has now become a...
NLMateriaal voor technieklessen
Leuk gevolg van netwerken en CoderDojo'en is mensen leren kennen en waar ze mee bezig zijn. En zo kan ik met veel plezie...
NLTechniek wedstrijden voor kids
Een kort overzichtje van enkele techniekwedstrijden voor kids http://whizzkids.cst.be/index.html ICT-wedstrijd voo...
NLTijd voor STEM - verander het systeem van binnenuit!
Ik ben zelf geen manager of zaakvoerder, maar ik zie toch hoe moeilijk het is om genoeg goede technische geschoolde coll...
NLStarten met programmeren
Als CoderDojo coach krijg ik regelmatig de vraag hoe je nu eigenlijk moet leren programmeren. Er is niet één goed ...
ENScratch and Arduino on Linux
At CoderDojo we have the luck to receive old laptops from companies. We use them for kids who don't have a laptop or can...
NLArduino voor CoderDojo
Eén van de grootste uitdagingen voor de CoderDojos is het geboeid houden van de kinderen. Scratch is heel laagdrempelin...
NLEen Dojo starten
Ondertussen tellen we in België al een 15-tal Dojo-locaties waar kids tussen 7 en 18 maandelijks kunnen leren programme...
NLStarten met Scratch
Nu en dan kom ik de vraag tegen hoe je met Scratch moet beginnen in bijv. een school. Dus met de ervaring van CoderDojo ...
NLPresentatie voor de West-Vlaamse bibliotheken
Vandaag mocht ik CoderDojo Belgium voorstellen aan de West-Vlaamse bibliotheken. Dat gaf mij ook de kans om nog eens te ...
NLVoel je het momentum?
Momentum = "Periode waarin een duidelijke beweging is te zien" Ik heb even al mijn vingers en tenen samengelegd en ja...
NLWijs Online Trendrapport 2014
Ik ben helemaal geen full-time communicatiespecialist of trendwatcher maar gewoon iemand met een (on)gezonde interesse v...
ENAdobe you lost a fan...
I don't like to complain and certainly not on a blog, but... this time my frustrations reached a boiling point. Colle...
NLEen welgemeende dank u...
Is het niet de regel van een goede blog dat je er regelmatig iets op zet? Ik ben niet goed bezig dus... Maar ik heb een ...
NLStart van nieuwe CoderDojo's... een update!
Het is nu drie weken geleden dat ik "met de ogen dicht en de voeten vooruit" in CoderDojo gesprongen ben. En ik moet zeg...
NLKids speels leren programmeren? Tijd voor actie!
"Practice what you preach" is een uitspraak die ik nu wel moet in praktijk brengen. Genoeg geblogged en getwitterd over ...
ENGirl techies!
As I blogged before (Education or how it all started and Terug naar school?!) I find it important to integrate the w...
ENPresenting for an audience, do's and don'ts.
In school and the professional world we all have to give presentations. Some of us love it, some hate it, but we all use...
ENBig data
Big data Open data "Big data" is one of those other trending topics. You could link it to "open data" I blogged abou...
ENThe web of things
What is it? The internet is no longer a network of computers only. Smartphones, tables and more and more devices are co...
NLTerug naar school?!
Eerder had ik het op deze blog over mijn schooltijd en hoe één leraar er voor verantwoordelijk was dat ik gebeten werd...
ENThe rise of Open Data
From all the current buzz words "big data" is probably the "buzziest". According to Wikipedia this is the description...
ENBitcoin: the virtual money
All money is for the main part virtual. Just numbers on bank accounts. Imagine what would happen if Bill Gates went to t...
ENEducation or how it all started
The Flemish government is discussing (again and already for a long time) a new organisation of the educational system. O...
ENLearn from artists
At Multi-Mania I've seen the presentations of two inspiring "technology artists". The first was Joshua Davis, joshuad...
ENSocial media: why?!
Why do we use social media? Or more specific, why do I want to use it? I have this blog and sometimes I ask myself what ...
ENBack to blogging...
In the last two months I visited Phare Conference and Multi-Mania. Not so much for my "technical education", but to be o...
ENPersonal Linux cheat sheet
This looks like a good place to store my own list of Linux commandos I always need but sometimes forget... List the p...
ENVisual Studio 2005 - OutputPath property is not set
This post is a reminder for myself if I should have this error again in the future. I think (and hope) that not many sti...
ENMicrosoft code mess
Many long years ago, so long ago it was even an other century, I started experimenting with website coding with Microsof...
ENFlash Player - Premium features
Flash Player 11.2 will introduce Premium Features for gaming development. But to use them, you will have to pay if you e...
ENSome tweets about Sencha2
I'm still a hughe fan of Flex but I have to say the recent changes at Adobe convinced me that it is more important then ...
ENsorting numeric values in a Flex DataGrid
When loading data from a webservice to be shown in a datagrid it seemed that all values in the grid are treated as strin...
ENscrollToIndex doesn't work when dataprovider has just been updated
I experienced a problem with a datagrid where I tried to use a scrollToIndex. This was the necessary workflow: lo...