If you’re diving into the world of robotics with ROS2 (Robot Operating System 2), setting up a solid foundation is crucial. A well-organized workspace and properly structured nodes are the backbone of any successful ROS project. Whether you’re a beginner or a seasoned developer, this guide will walk you through creating and managing a ROS2 […]
Category: Tutorials
WebST: Web Components with Smalltalk @ ESUG 2024 in Lille – France
The 30th edition of the ESUG international conference held in Lille, France, 8 – 11 July 2024 was a blast. Beside, meeting the great the Smalltalk community, I gave a talk introducing WebST. This MIT licensed project is a PharoJS-based solution that provides a framework to seamlessly implement and test web components. Web Components are standard web […]
Pharo Networking by Example
On March 8th 2011, I gave a hands on talk on Pharo Networking. It was part of the Deep into Smalltalk sprint school organized by RMoD team from INRIA in Lille, France. You can find below slides are available on SlideShare. There is as well a 3 parts video from Youtube, although the audio is […]
Client-Server Application Development with PharoJS
PharoJS is a free open source infrastructure that allow developing and testing in Pharo applications that ultimately run on a Javascript interpreter. It is a general purpose solution that can target a wide range of applications, running in a web browser, on top of NodeJs or packaged in cross-platform mobile apps using some framework such […]
Getting Rid of Chemical and Carbon Waste from Batteries – A Maker’s Perspective
Many devices we use daily rely either on batteries that we need to replace more or less often. Beside the economical cost, this is a source of toxic waste. Using rechargeable batteries does not help much. Rechargeables are more expensive, and they eventually die and go to waste. There are some possibilities to recycle batteries. […]
Mac OS X Bug and Workaround to Open a “file:” URL with Parameters from Command-Line
Testing the PLC3000 project requires opening HTML files by a web browser. Indeed, PLC3000 is developed using PharoJS. Its code is written in Pharo, before getting transpiled to JavaScript and exported to a JS files referenced by HTML files. Developing PLC3000 in a TDD fashion, I quickly faced an issue. I realized that it is […]
How to Make Lifelike Robots with a Soul
A common misconception is that robots need advanced AI algorithms to have fluid interactions with people. Another myth is that robots need to have some special shape to be engaging.There’s actually a better, simpler, and more elegant way! Secrets of Engaging Interactive Robots Guy Hoffman from Cornell University introduced a solution that requires 2 complementary […]
PharoJS ESUG 2019 Update
I gave a short presentation at the ESUG 2019 Smalltalk conference that was held this year in Cologne, Germany. In this talk, I made a summary of main PharoJS changes and improvements done during the last 12 months. This includes a more robust test framework to run and test Javascript code generated from Pharo code. […]
Observer Pattern Made Easy with Pharo Lightweight Observer
Lightweight Observer is an alternative to Announcement, the default Pharo implementation of the Observer Design Pattern. I started developing Lightweight Observer because I needed a small framework, with an implementation that can be easily converted to Javascript using PharoJS. I also wanted to be straight forward to use. I had in mind beginners such as […]
Green Websites: Solutions for a CO2 Free Internet
Green websites is the way to go for a carbon free Internet. By going green, content providers will contribute to fight climate change. The impact will be significant since the Internet energy consumption is ever growing. The communications industry could use 20% of all the world’s electricity by 2025, hampering global attempts to meet climate […]