Embedded Systems

DubJUG 265, our live in-person event, presents Professor Ž (aka Željko Kozina!) Hear why Netflix dumped REST in favour of GraphQL and explore how memory management improves performance, the different parts of Java memory and the various garbage collectors. OFFICIAL BOOKING >>>>> https://ti.to/dublin-java-user-group/265-zeljko-kozina ## **Talk 1:** Netflix dropped REST, but should you? Last year, Netflix announced that it was dropping REST completely in favour of GraphQL. It is undoubtedly one of the popular kids on the Development playground right now. GraphQL is a new way to build APIs, one that's easier, faster, better, and more flexible than the old RESTful API system, or at least that's the promise. In this session, a REST developers' Assessment of Spring GraphQL, Željko will cover the basics of Spring GraphQL, explore its strengths and weaknesses, and determine whether it is a better option for your company than a conventional REST API. ## **Talk 2:** Trash Talk - Optimising Java Garbage Collection Understanding how Java organises memory is important for every Java professional, but this particular topic is a common knowledge gap for many software professionals. With the help of Željko, this talk explores how memory management can help you improve performance effectively, helping you understand the different parts of Java memory and the various garbage collectors so you can select your preferred one.

**IMPORTANT UPDATE:** Due to a fire incident at Kyodai Izakaya, It's been **temporarily closed**. Let's meet at J.R Mahon's on 1-2, Burgh Quay, Dublin 2 (across the river from Izakaya Kyodai). We still need a venue for presentations. If anyone can help, please get in touch (e.g. via Discord). The minimum requirement is a room with a screen, or projector. We have a Discord server, which you're welcome to join: https://discord.gg/nCBrCXB6 Clojure Ireland is sponsored by [Taxamo - a Vertex Company](https://twitter.com/taxamo).

This beautiful and historic building has 365 rooms and is officially the largest Orange Hall in the world. It contains two museums: covering Orangeism and the British forces. It's approx three quarters of a mile from Lurgan station and looks out on some 200 acres of parkland. The tour incl access to the museums and costs 12 pounds p.p. for over 66s and 15 pounds for under 66s. The dining facilities are excellent, main courses start around 16 pounds. We'll meet at Connolly station in time for the 9.50 Enterprise train. It's best to get a Dublin to Belfast return ticket but we'll alight at Portadown to get a local train for Lurgan. Your Dublin/ Belfast ticket covers you for travel between Portadown and Lurgan. If you want to go straight home after seeing the museums you'll make the 16.00 hrs train from Lurgan which connects at Portadown with the Enterprise, at 16.30, to arrive at Connolly Station at 18.13 hrs. If you want to walk around the grounds with me we'll make the 17.30 train at Portadown, arr Connolly around 19.13 hrs. As I'm booking lunch places in Brownlow and agreeing numbers with the owners please RSVP only if you're definitely coming. Payments for the tour and meal can be made by debit card or Sterling on the day. Please do not offer payment in euros.

IFSC Toastmasters will hold its next meeting on Weds 6th May at 6.30pm. It will take place in the CIE Boardroom in Connolly Station, North Dock, Dublin 1. Please ensure that you are up on the Station Concourse outside Tom Stanley newsagents by 6:15pm sharp as late arrivals will not be permitted access. [Connelly Station Concourse Locator](https://maps.app.goo.gl/ew5HA8BxgfoFyHm28) (Eircode: D01V6V6) [Meeting Point Picture](https://drive.google.com/file/d/1bKQNl_6wEXY6WrcbKBfYsqbY1nkqnhHo/view?usp=drive_link) You can expect to receive a warm welcome and experience the different ways we help our members and guests achieve their public speaking goals. Our meetings have a variety of speaking opportunities ranging from spontaneous topic discussions to prepared speeches and more formal roles. You can sit back and absorb the meeting or get involved a little and introduce yourself. Either way you can be assured of a fun and interesting evening of personal development. We really hope to see you there!

***[Save 50% getting a ticket in advance (only first 20 people)](https://www.eventbrite.ie/e/social-language-exchange-tickets-1985534555304?discount=EarlyBirdsMeetup&keep_tld=true)*** **✨ Dynamic Conversations** Enjoy small-group conversations (2–3 people per table) at dedicated language tables. There will always be **English-only tables**, and every attendee rotates through these tables during the **first and last rotation**. **🏷️ Language Stickers on Arrival** As soon as you arrive, you’ll receive: • **Native language stickers** (with flags + “native”) • **Practicing language stickers** (with flags + “practicing”) You may choose multiple practicing languages. These stickers help you join the right tables and connect with people who match your goals. **🔄 Rotations Every 30 Minutes** Every 30 minutes, the organizer rearranges groups based on preferred languages. We aim for **bilingual tables**, ideally with at least one native or advanced speaker. If no native speakers are available, we can still create a table as long as **two people want to practice the same language**. **🌍 Popular Languages** English, Spanish, French, German, Portuguese, Italian, and any other language requested by at least two attendees. **📈 All Levels Welcome** Beginner or advanced—everyone is welcome. The only requirement is enthusiasm and willingness to communicate. **🃏 Conversation Cards + Complimentary Fries** Need inspiration? Conversation cards are available at every table. Enjoy complimentary **fries around 8:00 PM**. **💸 Pay-as-you-go (Cash / Card)** • €6 General Admission • €5 Students • €4 per person when you bring friends **⭐ Loyalty Card (Automatically Activated)** Attend **4 Language Exchanges or International Meetups**, and your **5th event is FREE**. **💳 [Membership Options (Save € & unlock perks)](https://buymeacoffee.com/newindublin)** **🟡 Regular Membership (€12/mo)** ✔ Free: Singles, Language Exchange, International Meetup ✔ –50%: Quizzes, Big Singles, Theme Party, Cultural Mix, Social Games, Music Challenge ✔ Extra perks **🔵 Theme Membership (€15/mo)** ✔ Free: Quizzes, Big Singles, Theme Party, Cultural Mix, Social Games, Music Challenge ✔ –50%: Singles, Language Exchange, International Meetup ✔ Extra Perks **🟣 Complete Membership (€20/mo)** ✔ Free access to ALL events ✔ Extra Perks **📱 Stay Connected** 🔗 **[Linktree](https://linktr.ee/newindublin)**[ ](https://linktr.ee/newindublin)– full weekly calendar 💬 **[WhatsApp](https://chat.whatsapp.com/L8IcUuQzHVVLGaoUZ8ONRt)**[ ](https://chat.whatsapp.com/L8IcUuQzHVVLGaoUZ8ONRt)– reminders & updates 📘 **[Facebook](https://www.facebook.com/newindublinmeetup)**[ ](https://www.facebook.com/newindublinmeetup)– photos & highlights 📸 **[Instagram](https://www.instagram.com/newindublinmeetups/)**[ ](https://www.instagram.com/newindublinmeetups/)– stories & behind-the-scenes 🌐 **[Website](https://newindublin.net/)**[ ](https://newindublin.net/)– all information about our events **🎉 Join Us!** A fun, relaxed evening full of languages, new people, and confidence-building conversations. **RSVP now! 🚀**

**Book your ticket (6;34 euros) on EVENTBRITE. Money going to chariety.** Overview Come join us for a fascinating tour exploring the history and art of The Masonry building in Dublin 8! **The Masonry - History and Art Tour** Discover the hidden gems of Dublin 8 with our immersive tour of the historic Masonry building, now a vibrant workspace (Iconic Offices) and café. Step back in time as we explore the refurbished former seed warehouse, a beacon of Dublin's architectural heritage dating back to 1778. Marvel at the intricate craftsmanship and rich history embedded in its walls. Then, immerse yourself in the creative pulse of the neighbourhood as we showcase the diverse artwork of talented local artists. Our tour offers a captivating blend of past and present, weaving together the stories of Dublin's past with the vibrant expressions of its present-day culture. Join us for an unforgettable journey through Dublin's historic heart and artistic soul. Light refreshments and pastries will be provided on the day by The Art of Coffee. **MONIES GOING TO LOCAL CHARITY** DETAILS: **09:45 Meet outside the main entrance to the building** \*\*10:00:\*\*Tour begins Afer the tour there is coffee/tea provided **Buy your ticket on Eventbrite BEFORE pressing Attend!**

🔐 **Hack and Chill – Weekly Meetup** 🔐 📍 **Tog Hackerspace** \| 🕖 **Fridays, 7–9 PM** *(Except the first Friday of the month – we’re at 2600 Dublin then!)* Are you into cybersecurity, hardware hacking, or just love the hacker mindset? Bring your laptop, your curiosity, and your latest digital mischief to our chill Friday night sessions. No talks, no pressure — just hacking, learning, and chatting with like-minded folks in a relaxed space. 💻 BYO projects, hacks, and war stories ☕ Tea, tools, and toggers provided 💬 New faces always welcome Come hang out. We don’t bite — unless you’re a vulnerable service. https://www.tog.ie/2025/08/new-weekly-group-night-hack-and-chill/

Vision Language Models (VLMs) such as LLaVA, Qwen-VL, Nemotron VL and GPT-4o have unlocked a new era in AI where language and sight converge into a single reasoning system. These models can describe images, answer visual questions, read documents, and interpret charts — but their true power emerges when you fine-tune them on domain-specific data, teaching them to see and reason about the visual world that matters to you. In this hands-on session, we walk through the full fine-tuning pipeline for vision-language models. We begin by understanding how these architectures work — how a visual encoder like CLIP or SigLIP is coupled with a large language model through a projection layer, and how the interplay between image tokens and text tokens enables multimodal reasoning. We then move into the practical side: preparing image-text datasets, choosing the right fine-tuning strategy (full fine-tuning vs. LoRA vs. QLoRA), configuring training with frameworks like Hugging Face Transformers and PEFT, and evaluating results on real-world benchmarks. We will also discuss when and why fine-tuning a VLM is the right approach compared to alternatives like prompt engineering or retrieval-augmented generation, and how to avoid common pitfalls such as catastrophic forgetting, overfitting on small visual datasets, and misaligned image-text pairs. Bring your laptop, your curiosity, and — if you have one — a dataset you would like to try. By the end of the session you will have a clear, reproducible workflow for adapting any open-source vision-language model to a custom task. \*\*📅 Open to all levels — no prerequisites, just curiosity.\*\*

Hi all, Our first Meetup will be a casual get-together for anyone interested in Time Series Analytics, Forecasting, and Data Analytics. The idea is simple: meet new people, share your background, talk about your work/study experience, exchange ideas, and enjoy a coffee or a beer together in a relaxed atmosphere. We’ll meet at the bar on the ground floor of the Camden Court Hotel Camden Street Lower, Saint Kevin's, Dublin, D02 W086 www.camdencourthotel.com/en/ I’ll be there, so feel free to join! See you soon! Simone

Hello TEDheads! All of us will go through suffering at some point. What will you cling to on that day? Cliches and easy answers won't be enough. You will need something beyond 'everything happens for a reason'. Where will you find hope beyond positive thinking and pop-psychology? The talks below will invite us to figure out a path that deals with reality without cliche. A path that invites us to drink of the real and not simply cover our pain. Let's explore these questions and more together next week. ***Please watch the following TED talk and read the article on your own device before the event.*** *** # ★ **Talk #1:** ["Everything happens for a reason" -- and other lies I've loved](https://www.youtube.com/watch?v=DTcJmIbn5nw) \| Kate Bowler In life's toughest moments, how do you go on living? Kate Bowler has been exploring this question ever since she was diagnosed with stage IV cancer at age 35. In a profound, heartbreaking and unexpectedly funny talk, she offers some answers -- challenging the idea that "everything happens for a reason" and sharing hard-won wisdom about how to make sense of the world after your life is suddenly, completely changed. "I believe that in the darkness, even there, there will be beauty and there will be love," she says. Kate Bowler \| TED • July 2019 https://www.youtube.com/watch?v=DTcJmIbn5nw # ★ **Resource # 2:** [The gift and power of emotional courage](https://www.ted.com/talks/susan_david_the_gift_and_power_of_emotional_courage) \| Susan David Psychologist Susan David shares how the way we deal with our emotions shapes everything that matters: our actions, careers, relationships, health and happiness. In this deeply moving, humorous and potentially life-changing talk, she challenges a culture that prizes positivity over emotional truth and discusses the powerful strategies of emotional agility. A talk to share. https://www.ted.com/talks/susan_david_the_gift_and_power_of_emotional_courage **Please note the following:** We want to provide a space for those who are curious about life, enjoy TED Talks, and want to share their findings with others. Please join us as we consider this topic, **Wednesday, May 6 at 7:15pm.** Newcomers are most welcome! Hoping to see you there. (Please sign up only if you really intend to attend). NOTE: We ask for a **4 Euro contribution** on the night to cover costs. Thank you.

Join us to **practise and improve your target language with native speakers on Thursday downstairs in River Bar** (Burgh Quay, Dublin 2) from **6.30pm to 8.30pm**. **Our system:** **• You sit opposite a native speaker of the language you're learning** **• You speak 5mins English, 5mins other language, then change table** This ensures everyone gets an equal opportunity to practise the language they're learning. Our team seats people, controls the time, organises the table changes etc. What to expect: • Relaxed easy going atmosphere • Professional and quality service • Great networking opportunities • All levels welcome from absolute beginner to fully fluent • A big mix of ages with attendees at each event from 18 to 70+ years old • Topic cards on the tables to help start conversations Wide range of languages: We usually have **native speakers of English, Spanish, French, Portuguese, German, Italian, Japanese, Chinese** and more depending on who shows up. **Admission fee €7** (€6 for student card holders). **No pre-registration required, just show up**. Loyalty card system: Come to 5 events and the 6th is free. Over 150,000 people have attended our language exchange events since 2012 to practise and improve their target language - you can too! Everyone is welcome! For more news and info check: Website: [www.languageexchangeireland.com](http://www.languageexchangeireland.com/) FB: [www.facebook.com/languageexchangeireland](http://www.facebook.com/languageexchangeireland) Instagram: [www.instagram.com/languageexchangeireland](http://www.instagram.com/languageexchangeireland) NOTE: The MeetUp attendance does not reflect actual attendance. There are usually around 100 people at each event.

Most language exchanges are built around **movement**. —fast rotations, brief chats, surface-level conversation. New table. New person. Start again. It feels productive. It isn’t. Real conversations don’t happen in 10 minutes. They start there. Then they get interesting. At Flip Lingoes, **you stay.** Same table. Same group. Enough time for real conversation and real connection, beyond the surface level. Every 5 minutes, you switch roles: **fluent speaker ↔ learner**, not people. Before you arrive, **[create a profile here](https://www.fliplingoes.com/language-exchange-dublin/)**[,](https://www.fliplingoes.com/language-exchange-dublin/) tell us what language you're learning. This helps our **automated matching algorithm** put you in the right small group. No awkward searching. No guesswork. Simply scan the QR code on arrival and it automatically matches you with fluent speakers of your target language. We host events at Zanzibar Locke: calm, well-designed, easy to hear, easy to focus. *** **Event Flow** 6:45–7:15 → Seamless check-in (QR code, get matched, sit down) 7:15–8:30 → Language Exchange (structured, focused) 8:30 → Optional social + snacks included **Crispy chicken wings. Cheesy loaded nachos.** Straight from Zanzibar Locke’s kitchen. Perfect for chatting, relaxing, and refueling after a great language session. **Entry:** €8 (tasty snacks included) **Bundles:** 4 events €24 \| 10 events €50\, purchase [here](https://www.fliplingoes.com/language-exchange-dublin/?pricing_filter=in_person#bundles-section) in advance for express check in. Save time and money. **Be generous and invite a friend for free:** It's simple. Create a profile [here](https://www.fliplingoes.com/language-exchange-dublin/), log in, and click “**Invite Friend** to sign up.” It generates a link and you send that to them. Easy and your friend will thank you later ;) If they register for the event before you, you both get free entry.🙌 \*P.S We ask if you consider to buy a drink at the bar upon arrival and support their venue and excellent hospitality in the heart of Dublin. *** **Why Flip Lingoes works:** * Go deeper: longer conversations at the same table * Speak with the right people via automated matching * Smooth, calm, focused environment * Fun social finish If you’re tired of restarting conversations and want to **actually speak beyond the greeting and small talk**, this is your place. [Flip Lingoes](https://www.fliplingoes.com) is a new and innovative language exchange event, with a clear vision: **To upgrade language exchange events online and in cities around the world.** Currently in Dublin, Zurich and Online. **Can you guess our next city?** **Flip into our world:** **[On Instagram](https://www.instagram.com/fliplingoes/)** **[Sign up to FlipLingoes.Com](https://www.fliplingoes.com/language-exchange-dublin/)** ***

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.

Join the CONNECTED Westerville Mastermind Group for a dynamic afternoon of B2B networking! This event is perfect for professionals looking to expand their business connections, share insights, and foster collaboration within the community. Whether you are a seasoned entrepreneur or just starting out, this event offers a valuable opportunity to exchange ideas, build relationships, and grow your network in a supportive environment. Connect with like-minded individuals, explore potential partnerships, and discover new opportunities for professional growth. Don't miss out on this chance to enhance your business network and take your career to the next level with CONNECTED Westerville Mastermind Group! We meet the 4th Monday of every month from 11am-1pm. Welcome and general networking from 11am - 11:30am with core meeting 11;30 - 12:30 and a final round of networking from 12:30 - 1pm.

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.

FREE event [https://www.ccad.edu/chroma](https://www.ccad.edu/chroma) Friday, May 15, 3–7 p.m. CCAD campus, 60 Cleveland Ave, Columbus, OH Join Columbus College of Art & Design for *2025* *Chroma: Best of CCAD*, our annual campuswide exhibition showcasing outstanding student work from across the college’s academic programs. This faculty-juried show features select work from CCAD students of all class years, and is a can’t-miss end-of-year campus celebration recognizing their tremendous achievements. It’ll be a night of fun and entertainment, with interactive games, animation and film screenings, art symposiums, poetry and prose readings, and more (along with some of the best local food trucks). *Chroma* is free and open to all. Many exhibitions including... **Game Art & Design:** **DSB, first floor, Welcome Center lobby and Room 115**

Connected Westerville Night of Networking flips the script on networking, with surprises and connections that'll make you say, "Who knew networking could be this much fun?!"

**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