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Wir bieten allen Interessierten die Möglichkeit, mit Elektronik zu basteln. Workshops und Vorträge zu verschiedenen Themen rund um Elektronik und Software sind willkommen. Von Arduino bis zu komplett selbst entwickelten High-End Schaltungen sind wir für alle kreativen Ideen offen. Wir haben auch Gruppen rund um das Nähen, Programmieren, Retro Computer. Wir treffen uns immer am Dienstag und am Freitag ab 18:00 Uhr. Egal ob Anfänger oder Profi – hier seid Ihr jederzeit Willkommen. Ihr könnt mit anderen fachsimpeln oder auch mit unserer Hilfe Eure ersten elektronischen Gehversuche starten. Wenn zeitgleich in den vorderen Räumen Workshops oder Vorträge stattfinden, kann hinten Werkstattbetrieb stattfinden.

Join us for a community-led developer event focused on **AI-assisted coding with GitHub Copilot**. This event brings together developers to explore practical workflows, real-world use cases, and hands-on experiences using GitHub Copilot. Whether you are new to GitHub Copilot or already using it, this event will help you better understand how to apply AI-assisted coding techniques in everyday development hosted at **adesso SE**. **Sessions & Workshops** 1. **GitHub Copilot in practise - Sandra Ahlgrimm** 2. **Let's create a tiny AI library together, Copilot powered - Johannes Bechberger** 3. **GitHub Copilot Hands-on workshop - bring your laptops!** **Location** [Prinzenstraße 34, 10969 Berlin](https://www.google.com/maps/place//data=!4m2!3m1!1s0x47a84e50ecd583e3:0xde16d03634776e3b?sa=X&ved=1t:8290&ictx=111) **Agenda** 17:30 - doors open 18:00 - warm welcome by JUG leader **Sandra Ahlgrimm** and **Andreas Voigt** from **adessoSE** 18:15 - first session 18:40 - second session 19:30 - workshop **Abstracts** **Let's create a tiny AI library together, Copilot powered** We all want to do it. When you want to integrate AI into your tools, what do you do? You add LangChain4j or SpringAI and run with it. But do you know how these libraries interact with the AI service providers or your local llama-server instance? These libraries aren't magic, so let's peek behind the curtain and write a tiny AI library together. This way you'll discover the REST APIs that power it all. **Speaker** **Johannes Bechberger,** a nerd passionate about compiler building and program analyses that enjoys cooking and works on the JVM at SAP ([LinkedIn](https://www.linkedin.com/in/johannes-bechberger-381296149)), making profiling easier for everyone. **Sandra Ahlgrimm** is Senior Developer Advocate working for Java Developers with Microsoft at GitHub. She also leads the Berlin/Brandenburg JUG together with Jörg, Oliver and Jan. **Andreas Voigt** is a Principal Software Architect at adesso SE. He has extensive experience in identifying and addressing architecture antipatterns. Andreas has spoken at several notable conferences, including JavaLand. He is dedicated to expanding the knowledge and application of architecture antipatterns within the community. **A big thank you to adesso SE** for hosting the event and generously providing food and drinks during the event. Your innovative approach and commitment to excellence are greatly appreciated!

We are back in the c-base! Do you already run NixOS and want to talk to other people or want an introductory session with some NixOS users. Just bring your machine! Usually there are no topics, we just sit in front of our computers, talk about stuff, debug some problems or review some PRs on nixpkgs. There are drinks usually available from the c-base bar. If you can't find us. just ask around or ask in irc (#krebs on hackint)

Hallo zusammen! In Rahmen der PAKD Gallery Kurse bieten wir euch einen Zeichenkurs an. Wenn Ihr Zeichnen liebt und eure Fähigkeiten weiterentwickeln möchtet, dann seid Ihr hier genau richtig. In diesem Video erzähle ich euch von meinem Kurs für realistisches Zeichnen mit Bleistift - und wie er Eure künstlerische Arbeit auf ein neues Level bringen kann. Hattest Du schon immer das Gefühl, zeichnen können zu wollen - Dir fehlt aber die richtige Anleitung? In diesem Kurs lernst Du realistisches Zeichnen mit Bleistift, einfach, verständlich und Schritt für Schritt: • Korrekte Perspektive • Licht und Schatten • Materialdarstellung wie Glas, Keramik, Stoff, Metall Der Kurs ist perfekt für Anfänger und für alle, die ihre Fähigkeiten verbessern möchten. Wenn dieses Video Eure Leidenschaft für das Zeichnen mit Bleistift geweckt hat, dann schickt mir einfach eine E-Mail und lasst uns gemeinsam eure Reise in die Welt des realistischen Zeichnens mit Bleistift beginnen. Kleiner Kurs, große Wirkung. Maximal 12 Teilnehmer\*innen! Anmeldung:Ä [kifan@pakd-gallery.com](mailto:kifan@pakd-gallery.com) Sichere dir deinen Platz, bevor alles ausgebucht ist. Dienstag 18:30 - 21:30 Uhr. 25€ für eine einzelne 3- stündige Einheit 200€ für ein 10er-Paket, flexibles einlösbar.

**We switched away from Meetup for organizing this event!** Right now, you have a couple of options, because we're still trying to find the best alternative. Please go to one of the following event pages, instead, and let us know, which one you'd prefer and for what reason! Help us find the best way to organize the event while supporting Free and Open Source software! \* [lu.ma/vuejs_berlin](https://lu.ma/vuejs_berlin) \- not open\, unfortunately \* [openmeet.net/groups/vuejs-berlin](https://openmeet.net/groups/vuejs-berlin) \- open alternative that supports atproto \* [roomy.space/vuejs.berlin](https://roomy.space/vuejs.berlin/) \- open community chat linked to OpenMeet

* **BOOK HERE: [www.BerlinPortraitAcademy.com](www.BerlinPortraitAcademy.com)** **More information:** Berlin Portrait Academy teaches realistic oil painting in the tradition of academies in Florence, Barcelona and London, bringing the Atelier experience to Berlin. Open to all levels from absolute beginner, to those who are more experienced but interested in tackling the academic method. Places are limited to six students per session. Cost is 45 euros per class 350 for a package of ten classes (enquire via email). Materials are provided free for the first lesson. **Please email [peter@pakd-gallery.com](peter@pakd-gallery.com) with any further questions!** See you there! **[www.BerlinPortraitAcademy.com](www.BerlinPortraitAcademy.com)**

**OpenClaw Anonymous Berlin** Informal meetup for people interested in OpenClaw and AI agents. We share what works/what doesn't and what we’re currently trying. Bring your ideas, experiments, and half-working setups. We're all here to learn how to tame the tiger. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- Events usually unfold in two parts: 1st part - People showcase what they're working on: projects, tools, setups 2nd part - Open discussion/Networking

Bist du bereit für einen Abend voller Geheimnisse, Täuschung und spannender Diskussionen? Am Mittwoch, den 22. April treffen wir uns zu einem neuen Mafia–Werwolf-Spielabend. Finde heraus, wer im Dorf die Wahrheit sagt – und wer heimlich zur Mafia oder zu den Werwölfen gehört. Ein Blick. Ein Verdacht. Eine Abstimmung. Und plötzlich ist jemand… raus. 📅 Datum: Mittwoch, 22.04 ⏰ Beginn: 18:00 Uhr 📍 Ort: Café Chagall 💰 Spende ab 5 € Egal ob Anfänger oder erfahrener Spieler – alle sind willkommen. Bring gerne Freunde mit und tauche ein in eine Nacht voller Intrigen, Strategie und Spaß. ‼️ Wichtiger Hinweis: Wir spielen die ursprüngliche Version von Werwolf/Mafia

Bist du bereit für einen Abend voller Geheimnisse, Täuschung und spannender Diskussionen? Am Mittwoch treffen wir uns zu einem neuen Mafia–Werwolf-Spielabend. Finde heraus, wer im Dorf die Wahrheit sagt – und wer heimlich zur Mafia oder zu den Werwölfen gehört. Ein Blick. Ein Verdacht. Eine Abstimmung. Und plötzlich ist jemand… raus. ⏰ Beginn: 18:00 Uhr 📍 Ort: Café Chagall 💰 Spende ab 5 € Egal ob Anfänger oder erfahrener Spieler – alle sind willkommen. Bring gerne Freunde mit und tauche ein in eine Nacht voller Intrigen, Strategie und Spaß. ‼️ Wichtiger Hinweis: Wir spielen die ursprüngliche Version von Werwolf/Mafia

Join us for an upcoming in-person Lean Coffee meetup. Lean Coffee is a lightly-structured meeting format where the attendees create the agenda. Bring your management challenges; whether you're managing people, products, processes or beyond, and solve them together with peers from a diverse set of backgrounds. This event is great for anybody trying to create better ways of working and wants to share with + learn from others trying to do the same.

Hello Gophers, Welcome back for another year of Go talks and networking! Would your company like to host our meetup? Let us know! If you'd like to give a talk - submit your proposals here: http://goo.gl/forms/54YvJT223F All talk formats work: short talks (5-10 min) as well as regular length (25 min). If you have more ideas - talk to us at the Gophers slack: https://invite.slack.gobridge.org/ in the #berlin channel, and follow us on twitter: https://twitter.com/gdgberlingo **Speakers**: *Simon Schulte* is a Tech Lead with nearly a decade of experience building scalable backend systems across fast-paced product companies. With a background in business informatics and a passion for Golang, cloud infrastructure, and DevOps, he has spent his career solving complex engineering challenges. He is particularly excited about leveraging AI and LLM workflows to eliminate the tedious, repetitive work that slows developers down — think tech debt, boilerplate, and documentation — so engineers can spend their energy on what actually moves the needle. For Simon, AI isn't about replacing developers; it's about giving them back their time. *Daniel Peralta Madriz* is a backend engineer from Costa Rica with around 6 years of experience working with Golang, although, sadly, he's been spending most of his time lately working with Node.js :(. He is interested in distributed systems, scalability, and developer experience, and is currently experimenting with how to leverage LLMs to safely and autonomously execute repetitive tasks. *Michael Morgen* is a Platform/infra engineer by day, runtime and network optimizations by night. Join in person at: **Talon.One** Talon.One is the incentives engine behind 300 of the world’s most-loved brands, unifying loyalty and promotions on a single flexible platform. Their customers run millions of real-time incentive decisions across markets, channels, and use [cases.As](http://cases.as/) incentives become more strategic than ever, they are continuing to raise the bar for what businesses can build and how fast they can build it Wiener Str. 10, 10999 Berlin https://maps.app.goo.gl/8eMjgWes1E4TBA3c7 or virtually at: https://www.youtube.com/live/qh__TQ1bMF0?is=hw21pk0ZE3HGyaaT *** Agenda 10:49 PM: Networking Networking over drinks and food 7:30 PM: Welcome Welcome words from the organizers 7:35 PM: Talk 1: Go-ing Against the Chaos: Deterministic LLM Workflows / Daniel Peralta Madriz (Backend developer) & Simon Schulte (Techlead of Webhooks and Notifications) @ Talon.One LLMs are powerful, but “it works most of the time” isn’t good enough for production. In this talk, we’ll walk through how to design deterministic workflows around non-deterministic models using Go. From structured iteration loops to validation steps and guardrails, you’ll learn how to move beyond prompting and start engineering reliable LLM-powered systems 8:10 PM: Announcements and break Announcements, HR lost & found, open mic 8:30 PM: Talk 2: About Go Memory Allocator / Michael Morgen, Platform/infra engineer @ Mirantis A short talk about how Go gives memory to your program. We will look at the main allocator parts, why small allocations are usually fast, when Go asks the OS for more memory, and a couple of simple examples where this knowledge helps performance. 9:05 PM: Networking Networking over drinks and food *** Hosted By Natalie Pistunovich, Organizer Ole Bulbuk, Organizer Tim Scheuermann, Organizer Anderson Queiroz, Organizer Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-berlin-golang-presents-hybrid-may-golang-meetup-1/.

**Chat & Updates:** Telegram: [https://t.me/+VfHrJXPGVWLflGhz](https://t.me/+VfHrJXPGVWLflGhz) Discord: [https://discord.gg/SVb44D9](https://discord.gg/SVb44D9) **\*Deutscher Text unten\*** **Come & go as it fits your schedule** We are meeting in-person and online every week. We offer an office environment for self-study, work and presentation/discussion (lightning talks). **Schedule:** * 10am open doors * 10am online video conference open [https://meet.in-berlin.de/fcc](https://meet.in-berlin.de/fcc) * optional, afternoon, around 1pm: 1h presentation session (if requested / offered) * 6pm or extended open-end **Open co-working / co-learning** work on the FreeCodeCamp curriculum or your own project. Vibe inside but vape outside. **Mutual exchange** and support is welcome. English and German, as needed. We have fast internet, chocolate bars, drinks and a nice atmosphere. :-) **Personal Consultation / Career advice** Bodo runs this meetup for many years. As a Senior Dev/DevOp he is open to giving guidance for your questions about career development. Book a free appointment (up to 60min) with him here: [https://calendar.app.google/yoZfVZR4D9zwt5in7](https://calendar.app.google/yoZfVZR4D9zwt5in7) **Code presentations on the projector** Everybody can participate. Show your code and present your project/problem. Get feedback or help and let others learn from you! You don't have to prepare a fancy presentation, show us what you're working on. Also in English or German, as you feel more comfortable. **Komm und gehe jederzeit. Zeitplan:** * 10:00 Uhr Öffnung vor Ort * 10:00 Uhr online room [https://meet.in-berlin.de/fcc](https://meet.in-berlin.de/fcc) * Nachmittag, ca 13 Uhr: optional 1 Std. Präsentation / Gruppen-Diskussion (nach Angebot/Bedarf) * 18:00 bzw. länger, open-end **Präsentationsrunde** nach Bedarf und Angebot am Nachmittag. Dort man kurz zeigen, woran man gerade arbeitet, eventuell Hilfe bekommen oder interessante Tool vorstellen. Du musst keine große Präsentation vorbereiten. Ebenfalls auf Englisch oder Deutsch, wie Du Dich wohl fühlst. **Gegenseitiger Austausch** und Unterstützung sind willkommen. Es wird Englisch und Deutsch gesprochen. **Persönliche Beratung / Karriereempfehlung** Bodo veranstaltet dieses Meetup seit vielen Jahren. Als Senior Dev/DevOp gibt er Dir auch persönliche Ratschläge für Karriere im 1:1 Gespräch. Reserviere Deinen kostenfreien Online-Videocall (bis zu 60min) hier: [https://calendar.app.google/yoZfVZR4D9zwt5in7](https://calendar.app.google/yoZfVZR4D9zwt5in7) **Tech & Buzz:** Claude Code, nodeJS, npm, nvm, TypeScript, JavaScript, Bootstrap, Tailwind, Bulma, React, Angular, NextJS, Vue, Nuxt, Docker, Container, Virtualization, Django, Codex, LLM, vibe coding, static site generation, OAuth2, Simple SAML, UX, UI, CMS, markdown, Hugo, Netlify, freeCodeCamp, Udemy, Community, Frontend Masters, Backend, SQL, noSQL, MySQL, Python, Linux, Development, git, Version Control, HTML, CSS, Open Source, Responsive Web design, Relational Database, API, Data Science, Machine Learning, Infosec, Cybersecurity, Big Data, AI, Artificial Intelligence, ChatGPT, Stable Diffusion, Data Structures, Data Mining, Ethical Hacking, OSI, Network Security, Julia, Deno, Test driven development, CI, continuous delivery, Deployment Pipe, Bash, devOps, Gitlab, GitHub, Jira, Cloud Computing, Azure, AWS, Apache Server, SSH, Algorithm optimization, SEO, C/C++, Mobile Apps, Apple iPhone, mac OS, Firefox, Chrome, Android, Programming Languages, Cryptography, Patching, Blockchain, DApp, Solidity, Analytics, geek, nerd, Neural Network, MongoDB, ExpressJS, Flutter, Go Lang, AJAX, OOP, UML Diagram, Computer Science, Engineering, Modell, View, Controller, Requirements, risks analysis, PKI, SSL, PGP Certs

Welcome to our cosy Godot Engine Community Meetup! This is not a structured meeting, but rather a friendly get-together. We will hang out, chat and maybe show some of our current projects! 🦜 Regardless if you are an artist, designer, programmer, beginner, hobbyist, professional or anything in between: join us for sharing knowledge, creating art together, coding together, joining game jams together and having fun! 🌼 This meetup will happen at [c-base](https://c-base.org), Rungestraße 20, 10179 Berlin. 🛰️ You can also join us on [our Discord Server](https://discord.gg/Sm3CgrqqQa). ☎️ Follow us on [Mastodon](https://mastodon.gamedev.place/@GodotUserGroupBerlin) for updates. 📢 Also check out [our website](https://godot.berlin). 🌐 Please be [excellent to each other](https://godotengine.org/code-of-conduct/)! 🕊️

**Topic: XP in Science?** Science and Extreme Programming might share more than people might think - both live from rapid feedback, sharing knowledge and a mindset which embraces change. Let's figure out togehter how science look like if it takes XP seriously and what XP practitioners might learn from how science handles uncertainty. **What to Expect:** * A concise, 5-10 minute expert presentation introducing us to the nuances of the topic. * Engage in insightful discussions with fellow participants in breakout groups, exploring diverse experiences and practices. * Dive into prepared questions designed to challenge and expand your perspective on the topic. * A fantastic opportunity to network with like-minded professionals and enthusiasts passionate about software development and team building. *** **Broadening Our Discussions:** We explore a wide range of topics, including Extreme Programming (XP), agile management methods, lean theory, career management, programming katas, and other areas related to software development. Whether you're new to software, a seasoned practitioner, or an expert, your insights and experiences are valued here! *** **Event Details:** We'll gather from 7:00 PM, officially start the session at 7:15 PM, and take a break at 8:30 PM to decide the topic for our next session. Don't miss this chance to learn, share, and connect!

Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](https://www.awscolumbus.com/get-involved/) **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: [https://www.veeam.com/](https://www.veeam.com/) **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

This meetup is a beginner-friendly session introducing version control for Unity projects, with a look at three common tools: Git, Perforce, and Unity Version Control. The goal is to help you understand what version control is, why it matters for Unity development, and what options are out there. The format will likely be presentation-style, with live demos and time for questions throughout. You'll see each tool in action and learn how they fit into a Unity workflow. What to Expect: * An introduction to version control and why it's essential for Unity projects * An overview of Git, Perforce, and Unity Version Control * Demos of each tool in a Unity workflow * Tips for getting started * No prior version control experience required * Resources for continued learning All experience levels are welcome. Whether you're new to version control or already using one of these tools, this session will help you understand what each one offers. Food and drinks provided. Join us to learn more about version control options for Unity.

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

**You're invited to join local Columbus animal advocates as we watch PETA's workshop together on cage-free campaigns. Free vegan pizza will be provided! After the workshop Q&A, we'll have a group discussion and brainstorm on future activism plans. Hope to see you there!** **Here are the details:** **WHEN: Tuesday, May 19, 2026 at 6pm EST** **WHERE: KTC Columbus** **If you cannot attend in person, you can still view the workshop virtually at https://www.facebook.com/events/1567122777711333** **Here's some background on the workshop:** **Please join us for an eye-opening online PETA Playbook discussion with PETA’s Associate Director of Vegan Campaigns, Amber Canavan, where we’ll ask the hard-hitting questions about the cage-free campaigns and their impact on both hens and vegan efforts.** **Whether you’re looking to strengthen your outreach or sharpen your messaging around the egg industry’s humane-washing tactics, this workshop will give you practical tools to help others understand what “cage-free” really means for hens and why the label is misleading.** **We’ll explore how to keep conversations respectful, fact-based, and focused on the animals’ reality while encouraging others to take effective action.** **Please join us for this important workshop to learn how you can cut through cage-free marketing and help animals.** **Come ready to learn, ask questions, and ignite your activism for animals!**

Join us for a practical, beginner-friendly guide to choosing the right large language model. We’ll compare major models like ChatGPT, Claude, Gemini, and Llama, talk about when to use hosted APIs versus local models, and break down the tradeoffs around cost, speed, quality, privacy, context windows, coding ability, and reliability. You’ll leave with a clearer mental model for picking an LLM based on your actual use case instead of hype, benchmarks, or brand names. No deep AI background required. LOGISTICS AND PARKING: The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks! The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.

On Thursday, May 21, 2026, we will meet at the 700N Conference Room at 700 N Hurstbourne Pkwy. Doors will open at 6:00 p.m., and the presentations will begin sharply at 6:30 p.m. Along with an excellent presentation, TEKsystems will provide food. Please RSVP so we know how much food to order. Afterward, we will go to Brick House Tavern for drinks and food to continue the conversation. The session will also be broadcast at https://twitch.tv/TaleLearnCode. ### **GitOps: Easy Deploy and Even Easier Rollback** GitOps isn't just for containers. The methodology of deploying from a build is now baked into our culture. Take it a touch farther with infrastructure as code and a few extra techniques, and you can reliably deploy to any platform: cloud, on-prem, container, PaaS, and more. Join us as we learn the methodology of GitOps, the critical pieces you need in place, and the elegance of rollbacks with GitOps. You'll leave with a working repo of deployment techniques that doesn't consume any paid tools or container-specific techniques.

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month John Lairson will share a notebook describing the Alpaca (Paper) Trading API and discuss different algorithms for evaluating stock trades. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com