Interaction Design

Moving to Discord to **keep the community and events free and accessible** for everyone. All details & future updates can be found here: [https://discord.gg/6cKgFKXY4f](https://discord.gg/6cKgFKXY4f)

**Welcome to Berlin's international training community! 🎾** **We offer professional training throughout the season, whether you're new to tennis and looking for a great start or a seasoned player seeking to enhance your skills. Our training programme features flexible booking sessions that mix learning with competition.** **Our aim is to equip players for the game whether you're playing for fun or aiming for Grand Slam success 😎**

Join us in Berlin for an evening dedicated to the present and future of mobile development with Mendix. In the first session, a developer from BlueBerk will share real-world insights from a recently completed large-scale Mendix Native project. The talk will cover the current state of native development, common limitations teams face today, and practical workarounds that proved successful in production. In the second session, a Product Manager from Mendix will provide a forward-looking perspective on mobile development with the Mendix platform. He will discuss the available mobile options today and what’s coming next, helping you understand how to choose the right approach for your project. The presentation will compare native mobile and Progressive Web App (PWA) strategies and introduce the PWA Wrapper as a flexible and practical alternative for many scenarios. Whether you are currently building mobile apps or planning your next Mendix project, this meetup will give you valuable hands-on experience, architectural guidance, and a clear view of the platform’s mobile

**Das vierte Treffen** Wir lieben Romane! Wir diskutieren alle vier bis sechs Wochen im Prenzlauer Berg-Café en passant über ein Buch, das wir gelesen haben. Unseren Lesestoff wählen wir demokratisch aus. Bestseller, Geheimtipp oder Lieblingsbuch – wir entscheiden bei unseren Treffen gemeinsam, welchen Titel wir für den nächsten Monat auf die Agenda nehmen. Die Teilnahme ist auf 12 Personen begrenzt, weil sich in einem größeren Kreis leider nicht gut diskutieren lässt. Und hier das Buch für's nächste Treffen. **Dorothee Elmiger, Die HOLLÄNDERINNEN** Dorothee Elmigers nimmt den realen Fall zweier Holländerinnen, die 2014 beim Wandern in Panama verschwanden und von denen später nur Skelette gefunden wurden zum Ausgangspunkt ihres schmalen Buches von nur 160 Seiten. Der Fall der verschwundenen Frauen führt eine Gruppe von Menschen, angeführt von einem Theatermacher, in den Dschungel und die Geschichte wuchert aus in ein Chaos von Gedanken, Erfahrungen und Reflexionen, die wild und verwirrend sind wie der Urwald selbst. Es ist kein leichtes Buch, eher ein intellektuelles Spiel mit Verweisen auf Literatur des Grauens und die Probleme des Erzählens. Es wurde mit Literaturpreisen überhäuft, bietet jede Menge Stoff für Deutungen, mag gefallen oder abgelehnt werden - ist also das Richtige für eine angeregte Diskussion.

Das alte T-Shirt mit einem Statement-Print wiederbeleben, eine verlorene Spielfigur nachdrucken oder einen Stempel designen: MeetUp im Humboldt Forum! In diesem dreistündigen Workshop sind alle Interessierten mit und ohne Vorkenntnisse dazu eingeladen, verschiedene Maker Space Technologien kennenzulernen. Wir erklären an unterschiedlichen Terminen (s.u.), wie sich mit Laser Cutter, 3D-Drucker, Schneidplotter, Näh- oder Stickmaschine nützliche Dinge für den Alltag herstellen lassen. Inspiriert von den aktuellen Ausstellungen und Themen des Hauses, können am Laptop mit der Software Inkscape oder Tinkercad eigene Grafiken und Objekte entworfen und gestaltet werden. Wer sich geschickt anstellt, kann am Ende ein fertiges Produkt mit nach Hause nehmen. Die Personenzahl ist begrenzt. Bitte buchen Sie **am Veranstaltungstag an der Tageskasse im Foyer** pro Person ein kostenfreies Teilnahmeticket! Der Workshop ist nicht für Kinder und Jugendliche unter 16 Jahren geeignet. **Die nächsten Termine und Themen:** **Nützliches aus Filz mit der Stickmaschine** 25\. April \(ohne/geringe Vorkenntnisse\) und 2\. Mai \(Fortgeschrittene\) **Pins und Anstecker aus dem 3D-Drucker** 23\. Mai \(ohne/geringe Vorkenntnisse\) und 30\. Mai \(Fortgeschrittene\) **WM-Special: Fan-Trikots selbst gemacht – Bitte T-Shirt mitbringen!** 20\. Juni \(ohne/geringe Vorkenntnisse\) und 27\. Juni \(Fortgeschrittene\) **Weitere Informationen:** Kostenfrei. Bitte buchen Sie Ihr Ticket direkt am Veranstaltungstag an der Tageskasse im Foyer. **Die Ticketbuchung im Voraus und im Webshop ist nicht möglich.** Dauer: 180 min. Ab 16 Jahre. Sprache: Deutsch, Englisch. Rollstuhlgerecht. Ort: Werkräume, 1. OG. Maximal 15 Personen.

The Language Café is primarily aimed at people who are struggling with their mental health which can make it hard to go to regular courses. We want to create a safe space for everyone to learn and practise without pressure. Everyone is welcome! Please try to be on time so we can all get started together :) We mainly practise on a beginner/lower intermediate level and adapt to everyone's prior level of German. The Language Café will focus on teaching you the most important words and phrases and basic grammar in German. The content of the course is adapted to real life. (everyday life in Germany, dealing with authorities, etc.) We will cover different topics every week and you can join us anytime, since the topics do not necessarily build on each other. The Sprachcafé is for free. \*If you cannot make it please cancel your participation so someone else from the waiting list can join, thank you!\* \| \| \| \|

**Hey Berlin Data Folks!** We’re looking forward to our first meetup of the spring on **23rd April**. Our Batch 45 participants have been working hard on their final projects, and they’re ready to share what they’ve built. It’s a casual evening to see some practical AI applications, meet others in the local data community, and chat about new ideas in the field. We’ll also have some pizza and drinks to keep the conversation going. 🍕🍻 **Free to Attend!** **Agenda:** **17:30** \- Drinks and Networking **18:00** \- Welcome & Introduction Followed by Project Presentations **Project Ideas:** **1\. AI/ML – Office Posture Classification** ***Project by Mariami Marsagishvili*** An intelligent desktop application using a computer vision pipeline (TensorFlow/MoveNet) to monitor 17 body keypoints in real time. It calculates joint angles to detect slouching and provides automated stretch recommendations. **2\. RestockVi — Smartphone\-Based Inventory Intelligence** ***Project by Vikhyati Singh*** A novel retail solution utilizing "Rectangular Lattice Gap Detection" (RLGD). This identifies out-of-stock items via smartphone scan without requiring pre-trained product datasets, making high-end inventory AI accessible to independent stores. **3\. Fraud Eye — Intelligent Verification for Insurance** ***Project by Juliya Sebastian*** An advanced verification layer that detects AI-generated or manipulated images in insurance claims. It analyzes pixel-level consistency and physical plausibility (lighting/reflections) to combat sophisticated digital fraud. **4\. MigraineChat — Voice\-First LLM Health Logging** ***Project by Isabella Boux and Maxim Smirnov*** A voice-to-data system that uses an LLM-powered extraction pipeline to transform unstructured speech into structured longitudinal health records, enabling predictive modeling for personal triggers. **19:30** \- Open for networking **20:30** \- Wrap up We have limited seat so please RSVP soon. See you all at the event.

Übersicht Join us for Butterflies Garden – a fun day of planting and creating together in person! Butterflies Garden – Co-Creation & Planting Day Join us for the first step of the Butterflies Garden project (With the support of IUCN Save Our Species, co-funded by the European Union)! This is a fun, hands-on community day where we will: Co-design the garden together (ideas, plants, layout) Prepare the soil Plant the first flowers and host plants 💚 Everyone is welcome – no experience needed! 💚 Whether you are a gardener, nature lover, designer, insect enthusiast, artist, student, neighbour, or someone who enjoys working in community, your energy is valuable. Schedule: 10:00 – 12:30 → Collaborative design session (with coffee, mate & tea) 12:30 – 13:30 → Picnic / lunch break (bring something to share) 13:30 – 16:30 → Practical work: soil preparation + planting You can join for the morning, afternoon, or the full day. 📍Location: Dammweg 216, 12057 (Neukölln, Berlin) 📅Date: Sunday 26 April 2026 Free event – previous registration required: https://tiny.cc/wq02101 🌱 Join us in this collaborative experience and help grow a community around pollinator-friendly gardens!

Join us for a cozy potluck to share food, meet new girls, and build real friendships with fellow Desi women in Berlin. **What to bring:** • A drink for yourself • Easy-to-share Indian food • A towel or picnic mat to sit on • Your own cutlery (you can also eat on your box’s lid) Note: The weather for Saturday looks sunny! (If it changes significantly, we may have to cancel.) Who are we? We host free community events for Desi women in Berlin (Desi = people from South Asia). We’re already 200 members strong! And the group is very active, not commercial at all. To keep this a safe and comfortable space, I personally add members to the WhatsApp group after meeting them.

Join our in-person meetup on April 24th to hear talks from experts on cutting-edge topics across AI, ML, and computer vision. **[Register to reserve your seat.](https://voxel51.com/events/berlin-ai-ml-and-computer-vision-meetup-april-24-2026)** Space is limited! **Date, Time and Location** Apr 24, 2026 5:30 PM - 8:30 PM [MotionLab](https://motionlab.berlin/) Bouchéstraße 12/Halle 20 12435 Berlin **Kaputt: A Large-Scale Dataset for Visual Defect Detection** We present a novel large-scale dataset for defect detection in a logistics setting. Recent work on industrial anomaly detection has primarily focused on manufacturing scenarios with highly controlled poses and a limited number of object categories. Existing benchmarks like MVTec-AD (Bergmann et al., 2021) and VisA (Zou et al., 2022) have reached saturation, with state-of-the-art methods achieving up to 99.9% AUROC scores. In contrast to manufacturing, anomaly detection in retail logistics faces new challenges, particularly in the diversity and variability of object pose and appearance. Leading anomaly detection methods fall short when applied to this new setting. To bridge this gap, we introduce a new benchmark that overcomes the current limitations of existing datasets. With over 230,000 images (and more than 29,000 defective instances), it is 40 times larger than MVTec and contains more than 48,000 distinct objects. To validate the difficulty of the problem, we conduct an extensive evaluation of multiple state-of-the-art anomaly detection methods, demonstrating that they do not surpass 56.96% AUROC on our dataset. Further qualitative analysis confirms that existing methods struggle to leverage normal samples under heavy pose and appearance variation. With our large-scale dataset, we set a new benchmark and encourage future research towards solving this challenging problem in retail logistics anomaly detection. The dataset is available for download under [https://www.kaputt-dataset.com](https://www.kaputt-dataset.com). *About the Speaker* [Sebastian Höfer](https://www.linkedin.com/in/sebastian-h%C3%B6fer-891178121/) is an Applied Science Manager at Amazon Fulfillment Technologies & Robotics, leading machine learning and computer vision research for large-scale robotics and warehouse automation. He received his PhD from the Robotics & Biology Lab at TU Berlin, focusing on Sim2Real transfer and robotic perception. His recent work, “Kaputt: A Large-Scale Dataset for Visual Defect Detection” (ICCV 2025) [37], established a major benchmark for industrial anomaly detection, reflecting his expertise at the intersection of academic research and real-world deployment. **Data Foundations for Vision-Language-Action Models** Model architectures get the papers, but data decides whether robots actually work. This talk introduces VLAs from a data-centric perspective: what makes robot datasets fundamentally different from image classification or video understanding, how the field is organizing its data (Open X-Embodiment, LeRobot, RLDS), and what evaluation benchmarks actually measure. We'll examine the unique challenges such as temporal structure, proprioceptive signals, and heterogeneity in embodiment, and discuss why addressing them matters more than the next architectural innovation. *About the Speaker* [Harpreet Sahota](https://www.linkedin.com/in/harpreetsahota204/) is a hacker-in-residence and machine learning engineer with a passion for deep learning and generative AI. He’s got a deep interest in VLMs, Visual Agents, Document AI, and Physical AI. **Most AI Agents Are Broken. Let’s Fix That** AI agents are having a moment, but most of them are little more than fragile prototypes that break under pressure. Together, we’ll explore why so many agentic systems fail in practice, and how to fix that with real engineering principles. In this talk, you’ll learn how to build agents that are modular, observable, and ready for production. If you’re tired of shiny agent demos that don't deliver, this talk is your blueprint for building agents that actually work. *About the Speaker* [Bilge Yücel](https://www.linkedin.com/in/bilge-yucel/) is a Senior Developer Relations Engineer at deepset, helping developers build agentic AI apps with Haystack. Passionate about AI, she makes complex concepts approachable through hands-on tutorials, both online and at real-life events. **Operationalizing Computer Vision for Overhead Lines: Beyond the Demo** At first glance, visual inspection of high-voltage power lines seems straightforward: collect imagery, run one or two AI models, and report the findings. In practice, moving beyond a proof of concept reveals a range of issues that can make or break a campaign. Common concerns include data quality and coverage, scarcity of the most relevant cases and abundance everywhere else, variations in pylon geometry and asset types across regions, calibration and GIS alignment challenges, and a long tail of edge cases that emerge in real-world operations. This talk introduces Siemens Energy’s end-to-end overhead line inspection solution and shares key learnings from inspecting more than 10,000 km of power lines for real customers across several continents. We will show how raw 2D/3D data is transformed into structured information, delivering insights into asset inventory as well as defects, and supporting maintenance and planning decisions for critical infrastructure. The focus is on the combination of algorithmic building blocks and scalable processing, designed for robustness and consistency at scale, where even low error rates can become operationally significant. *About the Speaker* [Stefan Wakolbinger](https://www.linkedin.com/in/stefan-wakolbinger-aa0ba874/) is the Development Team Lead for AI & Analytics at SIEAERO, Siemens Energy's digital powerline inspection service. He leads the development of cutting-edge AI and analytics solutions that transform aerial powerline inspection through multi-sensor technology. His team creates digital twins of powerline infrastructure, automates fault detection, and monitors vegetation management—making powerline inspection safer, more precise, and more efficient. Stefan has been driving innovation in this role since September 2022. **Search your video library like a database** Drop in YouTube URLs or upload files and query content four ways: exact keyword matching, semantic search across transcripts, visual scene search via SigLIP2, and LLM-generated answers that synthesise across segments. [Paras Mehta](https://www.linkedin.com/in/pmehtaeu/) is a Berlin-based AI engineer and CTO/co-founder of Sylby, a language learning app he built from scratch, reaching 10,000 users and raising €350K. Previously: data scientist at Motionlogic, senior software engineer at Volkswagen, a PhD from Freie Universität Berlin, and a visiting stint at Cambridge. He now works as an AI engineer at HPI's AI Service Centre.

Do you ever feel like your body is trying to tell you something, but you’re not quite sure how to read it? Signals like afternoon energy crashes, skin changes throughout the month, and shifting moods aren’t random - they’re deeply tied to your hormones. In this experiential workshop, let me take you on a deep dive into your body and the natural rhythm of your hormones. Balanced hormones can help you feel on top of the world, turned on, and energized while imbalanced hormones can leave you fatigued, emotionally dysregulated, and struggling with issues ranging from PCOS to acne. Though you can find a wealth of information online about hormonal health, this workshop focuses on something far more powerful: how to use your own body as a source of insight 💃 Together, we’ll bridge the gap between the internal world of your hormones and your lived, day-to-day experience. Instead of guessing or relying on generic advice, you'll learn how to read your body's signals and respond in a way that supports your vitality. **In this workshop, you’ll:** * Discover four key lifestyle drivers that shape your hormonal balance * Learn to recognize when these are out of sync and how to support them * Explore your own patterns through an interactive “Body Signals” game * Understand how your needs shift across your cycle and how to support each phase This workshop is primarily designed for women aged 20–45, as we’ll explore cycle-based patterns, but all women are very welcome. You’ll leave with a deeper sense of connection to your body, a new way of understanding your energy and physical signals, and a clear, personalized step to support your hormonal balance. At the end of the event, you’re warmly invited to stay and connect over quiche and salad at the beautiful Schätzchen Café in Prenzlauer Berg. 🥗❤️

Das alte T-Shirt mit einem Statement-Print wiederbeleben, eine verlorene Spielfigur nachdrucken oder einen Stempel designen: MeetUp im Humboldt Forum! In diesem dreistündigen Workshop sind alle Interessierten mit und ohne Vorkenntnisse dazu eingeladen, verschiedene Maker Space Technologien kennenzulernen. Wir erklären an unterschiedlichen Terminen (s.u.), wie sich mit Laser Cutter, 3D-Drucker, Schneidplotter, Näh- oder Stickmaschine nützliche Dinge für den Alltag herstellen lassen. Inspiriert von den aktuellen Ausstellungen und Themen des Hauses, können am Laptop mit der Software Inkscape oder Tinkercad eigene Grafiken und Objekte entworfen und gestaltet werden. Wer sich geschickt anstellt, kann am Ende ein fertiges Produkt mit nach Hause nehmen. Die Personenzahl ist begrenzt. Bitte buchen Sie **am Veranstaltungstag an der Tageskasse im Foyer** pro Person ein kostenfreies Teilnahmeticket! Der Workshop ist nicht für Kinder und Jugendliche unter 16 Jahren geeignet. **Die nächsten Termine und Themen:** **Nützliches aus Filz mit der Stickmaschine** 25\. April \(ohne/geringe Vorkenntnisse\) und 2\. Mai \(Fortgeschrittene\) **Pins und Anstecker aus dem 3D-Drucker** 23\. Mai \(ohne/geringe Vorkenntnisse\) und 30\. Mai \(Fortgeschrittene\) **WM-Special: Fan-Trikots selbst gemacht – Bitte T-Shirt mitbringen!** 20\. Juni \(ohne/geringe Vorkenntnisse\) und 27\. Juni \(Fortgeschrittene\) **Weitere Informationen:** Kostenfrei. Bitte buchen Sie Ihr Ticket direkt am Veranstaltungstag an der Tageskasse im Foyer. **Die Ticketbuchung im Voraus und im Webshop ist nicht möglich.** Dauer: 180 min. Ab 16 Jahre. Sprache: Deutsch, Englisch. Rollstuhlgerecht. Ort: Werkräume, 1. OG. Maximal 15 Personen.

Dear data-loving community, we’re excited to invite you to our next Meetup! This time in collaboration with [Spiced Academy](https://www.spiced-academy.com/en), who will be hosting us at their space. Join us on April 23 in Berlin and bring all your questions! :) **Tom Kaltofen: *"Building Deterministic Context Layers for AI Agents"*** [Tom Kaltofen](https://www.linkedin.com/in/tomkaltofen/) is an Engineer at [DHL Data & AI](https://www.linkedin.com/company/dhl-data-ai/) and a Creator at [mloda.ai.](http://mloda.ai.) About his keynote: "Data access and reuse are still unsolved, and AI agents are making it worse. This talk goes deeper into that problem: AI agents depend on reliable context (data, features, intermediate state) to make correct decisions. In practice, this context is tied to specific pipelines or infrastructure, leading to brittle systems when moving from prototype to production. I'll show how a plugin-based approach lets teams build deterministic context layers: separating what you compute from how you compute it, so the same feature definitions work on a laptop and in production. The talk includes a live demo where an AI agent discovers and queries data features programmatically. " **Behnaz Derakhshani: *"What If I Started Today? Rethinking Career Switching in the AI Era"*** [Behnaz Derakhshani](https://www.linkedin.com/in/behnaz-derakhshani-63342775/) works as a Data Engineer at [Diconium](https://diconium.com). She shares her personal career shift from finance to data engineering, including the unfiltered challenges and lessons along the way. About her keynote: "Eight years ago, there was no AI to debug my logic, just documentation and Stack Overflow. Now as a Data Engineer, I’m breaking down the lessons learned from my finance to tech transition and why AI makes this the most exciting (and accessible) time to pivot." ✧ ✧ ✧ **What to expect:** * Two expert talks and Q&A * A welcoming atmosphere with networking opportunities * Some snacks & drinks to fuel your thoughts :) ✧ ✧ ✧ **Timetable:** * 18:30 - Event admission * 18:50 - Welcome & Introduction * 19:00 - Tom Kaltofen: *"Building Deterministic Context Layers for AI Agents"* * 19:30 - 5 minutes break * 19:35 - Behnaz Derakhshani: *"What If I Started Today? Rethinking Career Switching in the AI Era"* * 20:05 - Snacks, Drinks & Networking * 21:30 - End ✧ ✧ ✧ More on the **-> [applydata data engineering meetup page](https://applydata.io/data-engineering-meetup/)**. **Our goal is to form a local data-loving community, so join us and let's talk data together!** ✧ ✧ ✧ *At the event, sound, image and video recordings are created and published for documentation purposes as well as for the presentation of the event in publicly accessible media, on websites and blogs and for presentation on social media. By participating the event, the participant implicitly consents to the aforementioned photo and/or video recordings. Find [more information on data protection here](https://applydata.io/events/information-on-data-protection/).*

**Zwischen Klarheit und Empathie: Die Kunst der Bewertungsrede** Feedback geben – das passiert nicht nur auf der Bühne. Im Job, im Team, im Alltag: Wer klar und einfühlsam kommunizieren kann, hinterlässt Eindruck. Aber wie kritisiert man, ohne zu verletzen – und lobt, ohne zu schmeicheln? In diesem praxisnahen Workshop zeigt uns **Gabi Brähler**, langjährige Meisterrednerin, wie konstruktives Feedback wirklich funktioniert. Kommt mit euren Fragen, macht euch Notizen – und geht mit konkreten Werkzeugen nach Hause, die ihr sofort einsetzen könnt. ✍️ 📍 **Wo und wann?** Im Clubraum in der Trinitatis Gemeinde (1. OG Hinterhaus – durch den Hof). Unsere Treffen folgen einem klaren, motivierenden Ablauf, der dir Sicherheit und Raum zum Ausprobieren gibt. 📌 **Neugierig geworden?** Dann schau vorbei – wir freuen uns auf dich! Mehr Infos findest du in unserem Linktree (https://linktr.ee/meisterredner)

We meet to learn and practice American Sign Language and to grow our familiarity with Deaf culture. Facilitated by hearing folks (with a connection to a professional interpreter) using Deaf-created content. People of all ASL skill levels are welcome! As we learn, we hope to connect more with the Deaf community in Central Ohio. Join us as you're able! Come regularly or just once - whatever you're looking for! Each meetup will explore different topics related to ASL/Deaf culture, and will feature time to practice conversation with one another. Just bring yourself and a willingness to learn!

**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** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD

Join other experienced and aspiring agile coaches and professionals to: * develop and practice your coaching skills in a peer-to-peer environment * share current successes and challenges in your work environment and get support from each other * learn from each other, build better relationships and experiment with new ideas ***NOTE:*** Pre-registration is required for this event. **Please arrive 10 minutes early** to check in at the security desk.

**TBA**

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

**TBA**

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. **New to electronics or curious about tinkering?** You’re absolutely welcome. If you’re a beginner and want to experiment, I’ll have a couple of starter kits available so you can try things out—whether that’s blinking your first LED, putting something on a display, or experimenting with simple sensors. No pressure and no experience required—just an interest in learning and building. While we continue to pursue a more permanent venue for this Meetup, we’ll be using public library facilities based on availability. This session will be at the Worthington Park Library in the Olentangy Meeting Room.