Technology

Welcome to TechTuesday at HSBXL. It’s where tech enthusiasts hang out, projects get tinkered with, and the occasional debate over the best programming language ensues. Whether you’re an old hand at hacking or just dipping your toes: * **Chats & Code**: Engage in hushed tech tales, showcase your latest digital masterpiece, or simply bask in the mesmerizing rhythm of coders at work. * **Ambient Rhythms**: We curate a backdrop of everything from ambient rock to downtempo electronica. It sets the mood, enhancing the creativity without becoming a distraction. * **Refreshment Protocol**: Club Mate to fuel your creativity, assorted beers for contemplation, and soft drinks for a refreshing pause. Choose your brew. * **Machinery Magic**: Our space boasts more than just computers. Soldering irons hiss and 3D printers hum, telling tales of projects brought to life. * **Knowledge Exchange**: Encountered a tech puzzle? Someone in the room might have just the insight you need. And if you’ve unraveled a digital mystery, consider sharing it. **Note**: The beauty of HSBXL is its welcoming ethos. Member or not, if you’re curious and respectful, you’re one of us. ### Getting to HSBXL HSBXL, the beacon for tech enthusiasts in Brussels, awaits. For your navigational needs, check [here](https://hsbxl.be/enter/). Barrier issues? Broadcast at +32 28804004. For real-time digital dialogues, tap into our [Matrix chatroom](https://matrix.to/#/#hsbxl:matrix.org). ### Bring Along Your tech gear, a project in progress, or simply a mind open to the endless possibilities of tech. That’s TechTuesday at HSBXL. A laid-back evening where tech happens, naturally. See you there.

🦞 **OpenClaw User Group Belgium — Clawingly Yours! 🦞** Welcome to the **first ever meetup** of the *OpenClaw User Group Belgium*! Whether you’re here to tame your personal AI assistant, share wild tales of rogue skill installs, or just figure out if your OpenClaw agent is plotting to organize your inbox or take over your fridge — you’re in good company. 💻🤖🎉 At this inaugural gathering we’ll: 🐾 Exchange tips and tricks for getting OpenClaw running smoothly (without it requesting your coffee machine’s password) 🔐 Talk about best practices for **security** so your AI doesn’t start a side hustle of its own. 🤝 Share real experiences — the successes, the fails, and the agent that *accidentally booked you a trip..* 💡 Inspire each other to contribute to the community and help make OpenClaw **smarter, safer, and more fun** for everyone. Come for the AI, stay for the laughs, and leave with new friends who understand that “clawing” your way through setup is half the adventure! 🧠🎈 . This event is free, but do bring 10€ if you want to enjoy some pizza. Doors open at 18h for some networking and speakers start at 19h-21h. Reach out to the organisers if you want to be a speaker or help prepare. **Clawingly yours,** **The OpenClaw Belgium Crew**

La idea es quedar y practicar francés y español en Bruselas. Apto para todos los niveles. Groupe pour améliorer l'espagnol et français à Bruxelles. Pour tous les niveaux. Nos juntaremos en el Centro Cultural Metaprosa (Chaussée de Saint Pierre 9, 1040 Etterbeek, Bruselas) para conversar con un café o una cerveza en la mano. Todos los martes de 19.00- 21.30.

Let’s shake off the Tuesday blues with some easy kilometers. This is a no-drop social run designed to keep the heart rate down and the vibes high. 📍 The Details Meetup: 18:40 (for a quick briefing) Start Time: 18:45 sharp Meeting Point: Under the Arch 🏛️ 👟 Target Pace: 6:30 – 7:00 min/km Distance: 5.0 km Effort Level: Conversational. If you can't speak in full sentences, we're going too fast! 📝 Note Please ensure you have "active" lights or reflective gear, as it’ll be dark by the time we finish. No Bag/Sweater Drop

Nos juntaremos en el centro cultural Metaprosa para practicar español/ castellano y Neerlandés/Flamenco/Dutch con un café o una cerveza en la mano. Apto para todos los niveles. Dirección: chaussé de Saint Pierre 9, 1040 Etterbeek Hemos creado un grupo de Whastapp en caso de que estéis interesados en comunicaros antes de cada martes ya que somos consciente de que a veces nos hay suficiente gente para practicar neerlandés [https://chat.whatsapp.com/IaESqYfdbGiFVPR5teQkIf](https://urldefense.com/v3/__https:/chat.whatsapp.com/IaESqYfdbGiFVPR5teQkIf__;!!DOxrgLBm!DOeGH6jS_pBgwY_CvN1vYuh-JPX71kQpuIJl8WlhFejYKqyHCL0Q3HkfIXxOF7cvSDOpeAeYzr8K_zELLw75wZA7pfw2-jQW7_2x6UaK$) No Spam please!

Would you like to improve your language skills and networking in a casual atmosphere? This event is for you! All languages welcome! Everyone is welcome! The aim is to speak with native/fluent speakers of your target language(s). You'll be around all types of people throughout the whole event. We will be in a private area. A great atmosphere is guaranteed! You'll have to order a drink to attend the event 😀 Don't hesitate to contact us for any further information

19h: Doors open. 19h30, talks: * **Thomas Verelst,** *Axelera.AI,* Deep dive into quantization and efficient operator implementations such as Flash Attention, showing their role in hardware-software co-design for edge AI. * **Douw Marx,** *ML and signal processing research at KU Leuven*. Does your LLM care about the same things you do? RLHF, reward models and mild AI-safety marketing. * **Maarten Trekels**, *Data Scientist and Project coordinator DiSSCo Flanders at Plantentuin Meise*. From opportunistic observations to big data: making sense out of biodiversity records 21h: Drinks at STUKcafé. 🎤 We’re almost on the look-out for interesting speakers and topics. Submit your talk here: https://sessionize.com/data-science-leuven

The **BeJUG** is back on February 18, kindly hosted by [AE](https://www.ae.be/), for an evening that blends technical innovation with personal perspective. This edition features **two talks** that approach our craft from different angles: \- Green AI with JobRunr: Sustainable training and inference on the JVM by Ronald Dehuysser \- Finding the Spark: A Career Reset Button by Loïc Magnette Come join us for this next event! **Schedule** \- 18:00: Doors open \+ Food and Drinks \- 18:45: Intro and BeJUG updates \- 18:50: Talk 1 \- 19:35: Little break \- 19:45: Talk 2 \- 20:30: Mingling \+ Drinks **Topics** **Green AI with JobRunr: Sustainable training and inference on the JVM** AI is booming - but so are its energy costs and carbon emissions. What if your Java application could schedule AI training and inference tasks not only when resources are available, but also when energy is greener and cheaper? In this talk, we’ll show how JobRunr, a distributed background job scheduler for the JVM, can be used to orchestrate local AI workloads in a carbon-aware way. By combining JobRunr’s scheduling capabilities with carbon-intensity data and dynamic cloud pricing, we can: \- Train and fine\-tune models when electricity is cleanest \- Run inference jobs where latency meets sustainability \- Reduce CO₂ emissions and operational costs without sacrificing performance You’ll learn how to integrate local AI workloads using Ollama into your Java stack, configure carbon-aware scheduling, and measure both sustainability impact and cost savings. By the end of this session, you’ll know how to cut CO₂ emissions and costs while keeping your AI workloads running reliably and see how you can make AI work for both your business and the planet. **About Ronald** Meet Ronald Dehuysser, a software architect from Belgium and creator of JobRunr. Seamlessly integrating with Spring Boot, Micronaut, and Quarkus, JobRunr is Ronald's solution for efficient distributed background job processing. When he's not working on open-source software, he is probably either rock climbing or sipping a fine Belgian Duvel beer. **Finding the Spark: A Career Reset Button.** A few years ago, I hit a strange point in my career. On paper, everything looked fine: good projects, solid skills, a stable job but inside, something had gone quiet. The excitement I used to feel when writing code was gone. I wasn’t looking for a new language or a better framework, I was just trying to understand why I had stopped caring. At some point I decided to join the wider Java Community. I expected to learn techniques and tips, but what I actually found was something much deeper. I met people full of energy and generosity who reminded me that behind every line of code there’s a story, an exchange, a spark. Something I believed I had lost was gradually rebooted by that sensation of belonging. That rediscovery is the topic of this talk. About how meaning can be restored through contributing, sharing, and connecting. You'll discover what inspires and motivates us to do our work, how community can change how we grow as developers, and why giving back frequently results in more than you might anticipate. I hope this story helps you understand that a new relationship with your craft, your community, and yourself is the answer to career apathy, not a new language. **About Loïc** Loïc Magnette is a seasoned software developer with a strong background in consulting. Currently a senior developer at Oniryx, he specializes in Java and Angular, delivering innovative solutions and sharing his knowledge as a speaker. As a co-organizer of the Belgian Java User Group (BeJUG), he fosters connections within the developer community. Outside of tech, Loïc’s passion for wildlife inspires his work and creativity.

**This week’s session is a structured debate.** The question is not whether you *like* Donald Trump. The question is whether his geopolitical actions represent a coherent long-term strategic recalibration — or short-term transactional disruption. We aim for analytical distance. No cult energy. No Trump Derangement Syndrome. We examine the **who**, **what, why, when, and how**: * What concrete strategic shifts occurred under his policies? * Why did he use tariffs, sanctions, NATO pressure, and bilateral deals as leverage? * When does unpredictability strengthen negotiation? * How did his approach change global alignments? * Did he accelerate the shift from cooperation to competitive realism? This debate welcomes different conclusions: * Was this strategic chess? * Was it destabilizing improvisation? * Was it a transitional phase in a multipolar world? * Did it expose fragilities in the liberal international order? ## **What Makes This Different** We are not here for partisan tribalism. **We welcome:** * **Pro-Trump arguments** * **Anti-Trump arguments** * **Structural/system-level critiques** We reject: * Moral hysteria * Slogan repetition * Performative outrage * Intellectual laziness * TDS This is not a space for ideological defense teams. It is a space for stress-testing ideas. No one will be shamed for defending or criticizing Trump. Ideas will be challenged. Individuals will not. ## **Debate Principles** * Speak from analysis, not emotion * Bring facts, context, or comparative examples * Distinguish personality from policy outcomes * Argue ideas, not identities Strong disagreement is expected. Good faith is required. *** ## **Location & RSVP** 📍 Ixelles – public bar Exact venue shared via WhatsApp after RSVP. Join here to confirm attendance: https://chat.whatsapp.com/LX7UkWGZ3UdLQWLBvNdezN Briefly introduce yourself when joining. AS always, no creeps or people who are looking to date.

♟️ **Rejoignez l’aventure Knight Clubbers !** ♟️ Venez vivre une soirée où l’échiquier devient un champ de bataille, entre bonne humeur et esprit de compétition. 🔗 **Inscription gratuite** : [S'inscrire](https://knightclubbers.com/meetup/660832?utm_source=meetup&utm_medium=social) ✨ **Des parties pour tous les niveaux** Débutant curieux ou stratège aguerri, chaque partie est l’occasion parfaite pour progresser et rencontrer d’autres passionné.e.s. 🕒 **Liberté totale – Jouez à votre rythme** Participez aux duels ou observez dans une ambiance conviviale. 🏆 **Défiez vos adversaires et grimpez au classement** Accumulez les victoires pour tenter de devenir Roi ou Reine de l’Arène. 👑 **Prêts pour le défi ?** Rejoignez Knight Clubbers et entrez dans la légende !

This workshop series is a **follow-up to the ESP32 Robotics workshop**, but with a different concept. Here, there will be no subject set in advance, instead **all participants are welcome to join at any point and at any level, from beginner to expert**. Beginners will be guided though the basics (C programming, how to use measurement tools, soldering, PCB design, etc…) and can get advice on what tools and kits to start with, others can come with their own projects to get help or share some knowledge. ## Requirements * Bring your own laptop (Windows, Linux or Mac) * Any microcontroller/dev kit to develop your project(s). If you are a beginner and don’t know what to buy, come and we’ll find the best starter kit for you ! * A strong desire to learn stuff, good mood and some patience !

Join us for a full day of collaborative work at HSBXL! This event is open to everyone who enjoys working in a community environment, whether you're advancing on business ventures, freelance projects, or creative endeavors. Bring your laptops, your enthusiasm, and your projects to collaborate, learn, and share in the main room of our spacious hackerspace. During this **8-hour co-working event**, you'll have the opportunity to work on your project, ask for feedback, offer help to others, and if you wish, share your achievements at the end of the day. **Please Note**: While HSBXL has multiple rooms for various purposes, this coworking event is taking place in the main room. It's important to note that online meetings should be avoided during this event to prevent noise disturbance and to maintain a conducive work environment for everyone. \#\#\# What the day will look like: 1\. Introduction and setting up: Find a comfortable spot in the main room\, set up your workspace and grab a Club Mate\, soft drink\, or a coffee to get your day started\. 2\. Work Session: Dive into your project\, seek assistance\, and collaborate with others\. 3\. Sharing Session: Optional\, but encouraged\! Share what you've worked on\, your challenges\, and triumphs\. \#\#\# How to get to HSBXL: HSBXL is located in Brussels. For detailed instructions on how to get to the hackerspace, please visit [here](https://hsbxl.be/enter/). If you encounter any issues while trying to get in, you can contact us at +32 28804004. Please note that the phone is inside the space. Alternatively, you can also reach out to us in our [Matrix chatroom](https://matrix.to/#/#hsbxl:matrix.org). \#\#\# Requirements Please bring your laptop, and if you have, an extension cord. The space has WiFi, but having your own internet backup solution can also be useful. Join us at this **8-hour co-working day** in the main room of HSBXL, and we hope you'll have made progress on your projects, learned something new, and most importantly, enjoyed the power of community collaboration. Whether you're a freelancer, entrepreneur, or creative, we welcome you to this day of productivity, sharing, and collaboration.

Welcome to our weekly event in the upstairs room of The Sister Café, rue Chair et Pain 3, one block from the Grand Place. Please get there early enough to order your drink at the bar first. Thank you! After introductions we will collect questions from the group participants, choose one by voting then discuss it for an hour. Then most of us stay for drinks and bizarre conversations. Past questions have been wide and not confined to academic philosophy: What is a genuine friend? Is social media turning us into emotional zombies? Do we lose some of the experience of things by defining them? Are we driven by sex? Is loneliness a personal failure? Is morality relative? **Crucially, be kind and respectful and generous** in your disagreements; remember how much you personally enjoy someone else proving you wrong before celebrating your cutting counterexamples.

Join the Columbus AI community for our quarterly gathering — a casual, community-focused evening where everyone has a chance to share, learn, and connect. These open mic–style events give anyone in the community up to **5 minutes** to present a project, share a tool, pose a question, or offer a perspective on the evolving AI space. No slides required — just a welcoming space to exchange ideas and keep the local AI conversation moving. If you’d like to take the stage, message **Chris (the organizer)** with a **title and short description** of what you’d like to share. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services)

We will show a variety of methods for building agents that run in Microsoft Foundry. This covers the different types of agents: Prompt, Multi, and Hosted, as well as the development lifecycle using evals and traces.

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation* Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects. **YouTube Link** TBA

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

Bring your Raspberry Pi, Arduino, microcontroller, or any other electronic project and join fellow electronics makers for a night of creativity and collaboration! This session is open forum to share your current projects—whether complete or in progress, it’s all interesting! Whether you’re deep into embedded systems, exploring new ideas, or just getting started, you’ll find a welcoming space to collaborate, share, and get inspired. (NOTICE - Location change!) This session will be at the Karl Road Branch of the Columbus Library in the Conference Room 2.

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

**[No Surprise, ... YET]** Let's get together and **WORKSHOP** about Job Searching and Career Management. Here are some of the content areas we can cover - expect this to change. * Using AI effectively (search, resume). * Job Search Tooling (i.e. TopResume, Job-Squid). * Resume / LinkedIn Review * Practice Interview * Practice Elevator Pitch ***Bring your laptop and expect to write some (non-AI-generated) code!*** Food and drinks will be available. **LOCATION:** 6515 Longshore Loop, Suite 300, Dublin, OH 43017 **FREE PARKING:** 6725 Longshore Street, Dublin, OH 43017