Hardware

Want to mess with some electronics? Or perhaps contribute to HacDC's main group project? HacDC's latest event brings hardware projects to the community. We will focus primarily on the main project (Space Blimp!) but please feel free to bring some of your own projects to show off and work on!

Come volunteer with us refurbishing donated bicycles so that they can be used again by the community! This event is open to new volunteers and existing volunteers. No mechanical experience is necessary. Note: The warehouse location is in the alley behind 1502 Mt Vernon Ave. Enter through the gray door next to a roll-down garage door. If you drive to the location, be sure to park in the street, not in the alleys or parking lots surrounding the warehouse. And wear clothes you don't mind getting dirty with bicycle grease! Volunteers under 18 need a parent or guardian to accompany them to their first volunteer experience and sign a liability waiver. Volunteers under 16 need a parent or guardian to accompany them at all times while volunteering with Vélocity.

A small team of AWS Solutions Architects not traditional software engineers, built AIRE Traffic Control (ATC), a production agentic AI platform now serving thousands of builders. We used AI at every stage: spec-driven development, AI-generated code, automated testing, and agentic workflows. In this talk, we'll share the real story, the architecture, the failures, the breakthroughs, and what we learned about driving adoption from 32% to 92% in 10 weeks. You'll walk away with practical patterns for building multi-agent systems, using AI-DLC methodology, and empowering non-traditional dev teams to ship production-grade applications.

📚 Do you love reading, but wish you had a structure and a community to share your insights with? Join our small circle of curious minds (just 4 members per gathering) as we come together for an hour of focused reading—in the calm setting of a library or the cozy atmosphere of a café. Here’s how it works: First part: Quiet reading on your own—bring a book you’re exploring, whether it’s philosophy, history, psychology, literature, or anything meaningful to you. Second part: We regroup and each person shares key takeaways, insights, or questions sparked by their reading. This sparks a structured yet free-flowing conversation around ideas, perspectives, and personal reflections. Why join? Add structure to your reading habit. Discover new books, authors, and ideas through others’ choices. Build real connections by sharing and listening deeply. Socialize around something meaningful instead of small talk.

**Agenda:** • 5:00 PM - Doors Open (in-person attendees). • 5:30 PM - **Deep Dive into Claude Code** • 6:30 PM - Networking • 7:00 PM - Doors Close **Talk Overview:** **Deep Dive into Claude Code** Ever wondered what happens under the hood when Claude Code runs your next Android task? This talk dives into the internals of Anthropic's AI coding agent — its bootstrap pipeline and agent loop. You'll see how fork agents share prompt-cache prefixes to cut input token costs and how four-layer context compression keeps long conversations from exhausting the window. You'll leave with a mental model of how this production AI agent actually works. Whether you're building custom MCP integrations, orchestrating multi-agent tasks, or just trying to get more from the tool you use every day, you'll have a toolkit of patterns to apply to your own Android workflows. **Speaker**: Mohit Sarveiya **Speaker Bio:** Staff Android Engineer AirBnb & Google Developer Expert **How to find us:** 1680 Capital One Drive, McLean, VA 22102 We'll be located in C2 **100 D/E**. The area is publicly accessible. If you can't find it, you can ask the front desk for directions to the **C2 100 D/E** **Attending Virtually?** Zoom Link: [https://us06web.zoom.us/j/84509924569?pwd=jLXAAyOY94b9BARoiACKtKz16MoDi1.1](https://www.google.com/url?q=https://urldefense.com/v3/__https://us06web.zoom.us/j/84509924569?pwd%3DjLXAAyOY94b9BARoiACKtKz16MoDi1.1__;!!FrPt2g6CO4Wadw!LFvXbAXwA9nr_LdcnaIwoMGePe66Msg5rsnSUkUB9Z2ixCtXMfmUuOCTC5hZPsJVUdvuRVQrAUvdV-jdXQm6$&sa=D&source=calendar&usd=2&usg=AOvVaw16hb6F9SrCsaIabEet1HR7) Meeting ID: 845 0992 4569 Passcode: 754789 **Parking**: You can park at 1680 Capital One Drive; this garage has a sign indicating public parking. Or at the WEGMANS parking lot.

**Do you want to play and grow with a band, without the commitment of starting a band? Join us for our Blues Jams. Great place to network with other musicians.** \*\*$10 for at the door\*\* **\*Members Get in free and receive other benefits\*** **[Become a Member](https://patreon.com/DoctorStrings?utm_medium=unknown&utm_source=join_link&utm_campaign=creatorshare_creator&utm_content=copyLink)** **Beginner to Pro Blues jam 21+ only, BYOB. Every Thursday.** This is a smaller more practice focused event at my shop. **Open to everyone and is a learning experience for most.** Just bring your instrument(Electric), no need to bring an amp we have all of that. Do not bring a pedal board with a bunch of pedals. The amps are dialed in for blues, trust me it's all there. Drums are here already, very basic kit. If you want to bring cymbals or any other drum gear, please show up early to set up. Also please be aware that other people are going to play the kit as well.

We invite you to get acquainted with some popular modern European board games. We grew up enjoying Careers, Clue, Monopoly, and other such games. These new games are even better. They are easy to learn and are loved by a wide range of players. People will be available to teach how to play each of the games described below. Beginners are welcome. Everyone is welcome to bring other board games and card games that you think people will enjoy. The Mexican Train domino game, Stone Age, and Alhambra are likely to be available. Scrabble and Rumikub have been mentioned as possibilities. **TICKET TO RIDE**: Engaging for players of almost any age, Ticket to Ride is great fun. The rules are simple, but deciding what plays to make in any specific game situation remains interesting and enjoyable for years. **CATAN**: In this game players act as competitive settlers. They acquire resources, trade them with other players, and build and develop their holdings on the island of Catan. Players gain victory points as their settlements grow. A feature that makes it easy to enjoy this game over and over is that the island is different for every game. It consists of hexagonal terrain tiles that can connect in any order. **CARCASSONNE**: Players take turns placing tiles to build a land with cities, farms, roads, and cloisters. They earn points by claiming and completing those things. This game remains enjoyable, time after time, for years. All are invited to come to the Lodge as guests of Virginia Colin. Please make sure that she signs you in. Drinks and good quality bar food will be available for purchase. Salads, onion rings, and sweet potato fries are recommended by many of us.

Join PSW Science® on THURSDAY June 11 at 8 PM as we welcome Earl Miller, Picower Professor of Neuroscience. During the question and answer period, in-person attendees and live stream viewers may ask the speaker questions, and in-person attendees may also engage with the speaker during the post-lecture reception. Refreshments are served. For more information on this meeting, please visit: https://pswscience.org/meeting/2537 The meeting will be held in the John Wesley Powell Auditorium, adjacent to the Cosmos Club. The Powell Auditorium is located at 2170 Florida Avenue, NW Washington, DC 20008. Use of the Cosmos Club is restricted to the Powell Auditorium, the entryway to the auditorium, and the restrooms immediately outside the auditorium. Please note there is no onsite parking available. PSW Science, founded in 1871, is one of the oldest scientific societies in Washington D.C. Now, over 150 years later, we celebrate the Society's rich history and contributions to scientific discovery and cross-disciplinary collaboration. For information on how to become a member of PSW Science and membership benefits, please visit https://pswscience.org/join/

Grab a game or bring your own, this event is open play. Whether it is chucking dice, full of traitors, laying tiles, or only cards involved, it doesn't matter; as long as it is a fun game, let's get it to the table and play it. The library will have games available to play but as always, you are welcome and encouraged to bring your own games. So leave a comment about what you are bringing! But be ready to teach your games. The library is located within walking distance of the Silver Spring Metro stop and there is a parking garage across the street. **NTBG** *is a safe environment for all to have fun. Bullying/harassment is not tolerated.*

Title: An Easy Intro to Feynman's QED, Part 3: Electron-Photon Interactions Date: June 13 2026 Noon - 14:00 EDT Summary: In his second QED talk on May 16, Terry discussed how Nobel Laureate Richard Feynman kept Einstein’s idea of a photon as a particle, but replaced the photon’s singular path through space and time with an integral of all paths the photon could have taken. In this final talk, Terry adds Feynman’s critical concept of how photons interact with another incredibly common particle, the electron. He shows the resulting model, called QED, describes not only most everyday phenomena, but also issues such as why antimatter can be interpreted as ordinary matter traveling backward in time. Speaker: Terry Bollinger is a computer scientist with BS, MS, and Professional Degrees from the Missouri University of Science and Technology.

😀♠️❤️ A Spades Special - Cards in Downtown Silver Spring 😀♠️❤️ We are hosting another event in Downtown Silver Spring - at Comma's Food Hall inside City Place Mall. 😀 Enjoy a friendly night of Spades play, lots of laughs, and Friday fun. ♠️ Spades games will be the main event, from 6pm to 10pm! 🌯 Play cards, eat, drink, & socialize! Enjoy drink specials and variety of reasonably-priced restaurant options. 🌟 Get matched with a partner onsite. All skill levels are welcome. The fun starts at 6pm! 🍷 Happy Hour Specials all night! 🎶 A Live DJ will be playing music all evening 🚗 Parking available in Ellsworth Garage (connected to the venue through the Skywalk) 📷 See the photo section for details 🌜Join us for a night of card play and fun times! 🌛 🙏🏿 We will also be honoring our friend, Tony, we recently lost in the Spades community. 🙏🏿 <><><><><><><><><><><><><><><

Let's enjoy a delicious Egyptian lunch! From the beginning, Fava Pot kept their eyes on the prize: serving the best of healthy, home-style Egyptian cuisine in an atmosphere that would make their customers feel like they were amongst a family. They do this by sourcing high-quality ingredients to cook their authentic meals. That means serving locally sourced foods such as chicken and game hens that are antibiotic-free and succulent meats that are grass-fed. And they also offer what more and more of our customers were asking for: delicious vegetarian and gluten-free options. Their motto has always been Eat Healthy for a Good Cause -through every purchase you make, they give back to Egyptian orphans in need. There is lots of free parking!

Open gaming at Panera! New players welcome. We have many games on hand or you can bring your own. We are happy to teach or learn one of yours.

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.

Over a billion documents processed. Millions of Veterans impacted. Hundreds of thousands of employee hours saved. Faster decisions. Greater accuracy. More benefits in the hands of our disabled Veterans. We created Smart Search, the world’s largest consumer of Amazon Textract, right when GenAI began reshaping what’s possible. Since then, we’ve built a suite of AI‑driven solutions that transform this data into real, measurable outcomes—accelerating benefits decisions for our Nation’s Veterans. Join us for a focused conversation on how an outcome‑driven approach to AI is helping us boost accuracy, streamline workflows, and deliver faster results for those who have served. This is a follow up to the AWS re:Invent 2023 "Intelligent Document Processing with Gen AI for Public Sector" presentation. About Speaker: Cameron Williams is a Senior Technical Project Manager and cross-functional technical leader at Booz Allen Hamilton with 15+ years of experience architecting and evolving scalable, cloud-native systems, from greenfield development to complex enterprise modernization. https://www.linkedin.com/in/cameronw711/ **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **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

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).

Thanks for being a part of the CABS Meetup Group! We meet @ the COFFEE UNDERGROUND on Indianola Avenue. We play many different games @ CABS - bring your own or play one of the OVER 2222 in our library. What are your favorite games? What was the last game you played? Hope to see and game with you soon! Check us out on Facebook! Doors open early on Saturday Mornings at 10am and around 4pm on Fridays if you are interested in learning new / simpler games ... or new to the hobby or just want to check us out come in early just after noon and we will show you around before the crowd grows. Stay for a game or two, an hour or two or for the day! Your first visit is free and after that it's $5 a meeting or you can join for the year! It's Your Move

Title: Smart Search + AI: An Outcome-Driven Journey from IDP to a Suite of AI Register at the Columbus AWS meetup: [https://www.meetup.com/columbus-aws-amazon-web-services-meetup/events/313426379/](https://www.meetup.com/columbus-aws-amazon-web-services-meetup/events/313426379/) Over a billion documents processed. Millions of Veterans impacted. Hundreds of thousands of employee hours saved. Faster decisions. Greater accuracy. More benefits in the hands of our disabled Veterans. We created Smart Search, the world’s largest consumer of Amazon Textract, right when GenAI began reshaping what’s possible. Since then, we’ve built a suite of AI‑driven solutions that transform this data into real, measurable outcomes—accelerating benefits decisions for our Nation’s Veterans. Join us for a focused conversation on how an outcome‑driven approach to AI is helping us boost accuracy, streamline workflows, and deliver faster results for those who have served. This is a follow up to the AWS re:Invent 2023 "Intelligent Document Processing with Gen AI for Public Sector" presentation. About Speaker: Cameron Williams is a Senior Technical Project Manager and cross-functional technical leader at Booz Allen Hamilton with 15+ years of experience architecting and evolving scalable, cloud-native systems, from greenfield development to complex enterprise modernization. https://www.linkedin.com/in/cameronw711/ **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **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