GateIn is a JBoss project that consists in a portal that goes beyond a simple portlet container. GateIn is the union of JBoss Portal and eXo Platform, so with GateIn you will have more than a JSR 168/286 implementation.
Recently in the new GateIn 3.2, efforts for a public API has been done. The navigation REST API, for example, is complete in "read-only" part which means you can access all your page nodes and iterate through them. For more information about the GateIn REST API you can look at this article.
To consume this API I decided to create a JavaFX application that would allow me to explore some of the new JavaFX features, like the cool embedded Browser and the TreeView control. In this post I want to show you this application, and try to share some of my experiences during the coding.
I have been having fun with Arduino these days! In this article I am going to show how did I use an electret mic with Arduino to create a Dancing Lights circuit. Dancing Lights I used to be an eletronician before starting the IT college. I had my own electronics maintenance office to fix television, radios, etc. In my free time I used to create electronic projects to sell and I made a few "reais" selling a version of Dancing lights, but it was too limited: it simply animated lamps using a relay in the output of a 4017 CMOS IC. The circuit was a decimal counter controlled by a 555. 4017 decimal counter. Source in the image When I met Arduino a few years ago, I was skeptical because I said: I can do this with IC, why should I use a microcontroller. I thought that Arduino was for kids. But now my pride is gone and I am having a lot of fun with Arduino :-) The implementation of Dancing Lights with Arduino uses an electret mic to capture the sound and light leds...
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