Helio Cola

Ruby and RaspberryPi are available to us for quite sometime and this talk is meant to discuss how to use Ruby to explore things on a RaspberryPi. From a practical point of view, we will go through installation, setup, and build a simple Motion Sensor application on a RaspberryPi.

In a world we teach ourselves a lot of things, why not do it Ruby & Pi way? Let’s get our hands on a piece of hardware, understand what it takes to setup one up, install a couple of libraries, Ruby, RVM, RBENV, a GUI. Let’s get a couple of sensors: motion, temperature, humidity, tsunami, ectoplasm and see if we detect a cool thing or two.

Whether you are building a Robot, controlling a Radar, or creating a Web App, the Ruby Garbage Collector (GC) can help you. The stats exposed by the Garbage Collector since Ruby v2.1 caught my attention and pushed me to dig deeper. Both Ruby 2.1 and 2.2 brought great performance improvements. From a practical point of view, we will discuss how to use the GC to enhance significantly the performance of your software, from configuration parameters to different approaches on how you can change them yourself.