Software Defined Radio

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!

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.

Have you been thinking about trying self-defense training, but do not want a loud, aggressive, or overly competitive environment? This free intro class is a simple way to get started. Maryland Systema offers practical self-defense training for adults in Takoma Park with a focus on movement, awareness, breathing, posture, and calm under pressure. This class is designed for beginners and first-timers who want real-world self-defense training in a welcoming setting. You do not need experience. You do not need to be in top shape. You do not need a martial arts background. You just need to show up ready to learn. This is not a sport-based class built around winning points, memorizing routines, or trying to look impressive. It is a more practical approach to adult self-defense training that helps you stay balanced, aware, and functional when things feel uncertain. If you have been searching for self-defense classes in Takoma Park, beginner self-defense near you, or practical self-defense training for adults, this class is a good place to start. **What you will work on** * Breathing and staying calm under pressure * Movement that improves balance and mobility * Awareness and posture * Simple partner drills * Practical self-defense training for beginners **Who this class is for** * Adults new to self-defense training * Beginners looking for a low-pressure class * People who want practical self-defense instead of sport martial arts * Adults in Takoma Park, Silver Spring, Rockville, and nearby areas looking for realistic self-defense classes **What to wear** Please wear comfortable workout clothes. No uniform is required. **Why start with this class** This free intro class gives you a chance to experience the training, meet the group, and see whether Maryland Systema is the right fit for you before joining regular weekly classes. **RSVP** Reserve your spot and come try a beginner-friendly self-defense class in Takoma Park.

**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.

Join DC Polyam at our monthly weekday social. Come by yourself, invite your friends, your partner(s), and even your entire polycule! Come join us from DC proper, Maryland, or Virginia; we welcome all people from all aspects of life and relationship dynamics. Metrobar has non-alcoholic options for those that don't want/don't drink alongside usual food trucks for eating options. Follow us on Instagram and join our Discord @DCPolyam We always enforce a set of house rules in order to maintain a safe space: * **Respectful Behavior** towards hosts and other guests is required; anyone who violates these rules may be asked to leave the event. * **Expectations:** Check your expectations at the door. Being at this event does not signal sexual availability or indicate any aspect of sexual orientation. Our events are about developing friendships and connections within the community. This is a no cruising event, in order to maintain a comfortable atmosphere for our guests. * **Safe Spaces:** We strive to create a safe space for people of ALL identities, including those who do not identify as polyamorous. * **No photography, video, or recording** of any kind is allowed **without prior verbal consent** of all parties involved. * **Verbal Consent:** Please be sure to ask and wait for a yes before hugging or initiating any physical contact, and encourage each other to speak openly about consent and personal boundaries. This helps foster a culture where personal boundaries are supported and attendees are empowered to speak confidently of their limits. (i.e. “Can I give you a hug?” “No thank you, but I would love a handshake.”) If you have any questions please feel free to reach out!

Today we are Steve's Lab. RSVP and you'll be sent the location. It's in Silver Spring. ***Join us for an evening in an electronics lab where we will attempt to run clean scans of graphene and gold samples, and then clean up that data with post processing.*** This is a high sensitivity experiment, and we do not plan on being successful so early. But we've had promising results lately - so we will be putting in the time. We are NOT meeting at our usual location, but rather at Steve's house/lab. If you RSVP, you will get a DM with the address but it's located in Silver Spring. We will attempt full, clean lab - clean tip repeated scanning tests to see what we can learn and improve. We will experiment with online attendees, but if all possible showing up in person is strongly encouraged. Online join link is: - [https://meet.jit.si/mocomakers](https://meet.jit.si/mocomakers) Our community is building (and documenting for other teams) how to build a scanning tunneling microscope using a mix of common and 3D printed parts. This will allow us to scan and visualize a single atom - an ambitious we are doing over the course of a few months. The MoCo Makers community is one of the most innovative and competent groups in Maryland, and we've done everything from [publishing cancer research](https://pubmed.ncbi.nlm.nih.gov/38136356/), to [launching products](https://www.kickstarter.com/projects/gotim/cozy-curvy-multi-contour-pillow), [winning grants](https://covidinfocommons.datascience.columbia.edu/awards/2014255), and inspiring thousands. Now our biggest challenge yet has appeared. We are building a Scanning Tunneling Microscope, that will allow us to scan and visualize single atoms. To get a better idea of what we are doing, see our reference project here: [https://www.youtube.com/watch?v=7N3OqTEq08g](https://www.youtube.com/watch?v=7N3OqTEq08g) All starting CAD, code, and reference files should exist. However, let's be the first Maker community to document the build process and share it with learners around the world. We will be publishing our work here -[ https://hackaday.io/project/202816-qt-panda](https://hackaday.io/project/202816-qt-panda) If you need a ride, let us know.

Come learn how money really works. We’ll cover how to grow it, protect it, get out of debt, and use smart retirement and infinite banking strategies to build long-term security.

PLEASE CHECK THE ONLINE MEDITATION CALENDAR FOR DETAILS OF THESE MORE THAN 50 SERVICES A WEEK- https://onlinemeditation.yogananda.org/calendar/

Join us in some debauchery for a night of socializing, mingling and dancing the night away, your memorable one, rubbing your shoulder with party snobs. Cover free entrance at all Clubs! Fellas this is hard to pass on this! ***GRAB A DRINK AND YOU ARE ALL SET TO ENJOY THE EVENT. YOU NEED TO GET AT LEAST A DRINK OR FOOD :) To get the event going and show support. We know that you like our events. P.S. : We have non-alcoholic drinks as well.*** We have a tiny venue and we hit capacity often and early arrival is suggested. We have the discretion to decide entry. ***AFTER THE SOCIAL, WE HIT THE DANCE FLOOR. BRING YOUR DANCING SHOES. WE WILL DANCE THE NIGHT AWAY!*** **This is also a wicked 'MeRtUp'!** **What is MERTUP?:) Mer + Meetup = Mertup.** **Mer is known as the Meetup guy. He likes to connect people and his fans coined that name for him. So, at his events, everyone will become a Wing Person to everyone:) When you get get there, we will introduce you to someone and you will be responsible to introduce that person to another person. That is MERTUP!** We will have specials, including our usual suspect MERtini:) **DEETS :** **Cover is $20. But it is FREE with RSVP.** ***\*Registration/PREGAME : 8:00PM-9:00PM*** ***You'll receive your wristband . If you can't make it by 10pm TEXT/EMAIL YOUR QR CODE to a friend, so that they can pick everything up for you.*** ***Also, you can text us at (202) 368-1878, after 10pm.*** ***So that we would let you know which club we are at.*** ***But the party continues till 3AM!*** **YOU NEED OUR WRISTBANDS FOR A FREE ENTRY AT THE CLUBS.** Event is 21+ ***Why do we stuck at one, whereas we can party at many?!:)*** ***\- Celebrate your birthday or your moments \(Graduation\, Anniversary\,*** ***Promotion, Retirement, Bachelorette/Bridal parties,....etc) in life with us!*** ***\- For bottle specials\, table reservation and girls night out TEXT 202\-368\-1878\.*** ***\~\~\~\~\~CHECK-IN DETAILS\~\~\~\~\~\~\~\~*** ***1\. You need our wristband to get the VIP Entrance\.*** ***2\. Photo ID: Everyone will be required to have a valid photo ID with them in order to enter\. If you forget your ID\, you will not be allowed in\.*** Dress code : Chick/Stylish/Elegant (all the clubs enforce dress code) ##### **DRESS CODE STRICTLY ENFORCED** We ask that you approach your wardrobe deliberately. No Athletic Clothing or excessively baggy clothing. Keep it chic, smart and classy! Jeans are allowed. Acceptable Mens shorts include those with belt loops. Unacceptable Attire: 1. Athletic Clothing: This Includes gym attire, sweatpants, yoga pants, and tracksuits 2. Baggy Clothing: Clothing that is excessively loose-fitting or oversized, such as baggy jeans, sagging sweatpants or oversized t-shirts. 3. Sportswear: Jerseys, team logos, and other sport-specific attire 4. Beachwear: shorts, tank tops, swimwear, and revealing clothing 5. Flip Flops: Open-toe sandals, thong sandals, and flip flops are not allowed 6. Timberlands and Steel Toed Shoes. Payment Instructions : 1\. Click on the ticket link and 'Pay Now' button\, after RSVPing\. Then hit the button\. 2\. Verify correct dollar amount for number of people you're paying for\. **3\. If you don't have a Paypal account\, click "Pay with a Debit or Credit Card"\.** 4\. If you have a Paypal account\, simply log in\, and pay as you normally would via Paypal\. **How to Unblock the Pop-up Blocker on Your Phone** Many of our patrons advised us that they have a Pop-up Blocker on their iPhones and it hinders them from buying tickets. To unblock, please follow the following steps : For Safari Users : 1\. Go to Settings\. 2\. Scroll down to Safari and click on it\. 3\. Select Block Pop\-ups and turn it off\. For Google Chrome Users : 1\. Open Google Chrome\. 2\. Click on the three dots and you will see many options\. 3\. Click on Settings\. 4\. Scroll down to content settings\. 5\. Select Block Pop\-ups and turn it off\. Refund & Ticket Resell Policy All sales are final. We only refund the full amount, if the event is canceled. If it is rescheduled, we will send an email to ticket holders advising that. A full refund will be given to those that let us know within 2 calendar days of the update email, if you are unable to make it on the new date. No refunds will be given after that time. However, you can sell your ticket to someone else if you are unable to attend. Please, feel free to post in the comment box for the event, that you have a ticket for sale. Work out payment between yourselves, and have the seller only send the organizers a message, letting us know the full name of the person taking your spot. You must let us know two hours before the RSVP close time, on the day of the event. PARKING INFO Parking might be a challenge and the event involves drinking, we highly recommend you to get a shared ride or taxi service. DRINK RESPONSIBLY! [) [) **Fellas, it is hard to pass on this!** http://photos1.meetupstatic.com/photos/event/d/8/c/0/600_447175488.jpeg http://photos4.meetupstatic.com/photos/event/d/8/c/7/600_447175495.jpeg http://photos3.meetupstatic.com/photos/event/b/0/8/2/600_436665186.jpeg http://photos4.meetupstatic.com/photos/event/b/0/8/8/600_436665192.jpeg http://photos2.meetupstatic.com/photos/event/9/e/8/9/600_433120585.jpeg http://photos3.meetupstatic.com/photos/event/9/f/a/d/600_433120877.jpeg http://photos3.meetupstatic.com/photos/event/a/5/8/7/600_433122375.jpeg

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/

Dance forro 😄Enjoy the music of Brazil and grab a dance partner. BID Dupont Circle hosts this free music concert series. Simone is a top local musician and forro is Brasil's favorite dance. See you there.

**\*TO ATTEND GET TICKET At** [https://www.socialevents123.com/event-details.aspx?id=13508#tix](https://www.socialevents123.com/event-details.aspx?id=13508#tix) (Multiple Meetup groups are co-organizing so the RSVP's shown are just a very small portion attending. We'll have at least 20 registered.) Our last online Bingo Night Party was such a BIG hit, we're doing it again! Do you like to play BINGO or want to just do something different?! Then you will LOVE this event! Here is your opportunity to have some fun playing our Live "Bingo" game. You will also get to socialize and make other friends from the comfort of your home. Prizes included Amazon gift cards, free future events and more! This completely online event will be LIVE and you will be able to see and hear the other participants while playing. You will either need to print or draw out your bingo cards. We will email you with how to get it after registering. You can have more than 1 person on your team as long as they're from your house and use same device. Friends/family around the country can also play. They would just need to also register for a ticket. This event will be held on Zoom which you would access through your computer/webcam, or via your phone/tablet. On day of the event, you will get a secured Zoom link and link to print out Bingo cards. \*RSVPS ON HERE ARE NOT REFLECTIVE OF ACTUAL ATTENDANCE as this is a multi group event. Cost: $15-$20 depending on how early you register. **\*TO ATTEND GET TICKET AT -** [https://www.socialevents123.com/event-details.aspx?id=13508#tix](https://www.socialevents123.com/event-details.aspx?id=13508#tix)

🖤🔥 Sara Landry @ Echostage – DC Ravers Night Out Sara Landry isn't simply one of the fastest-rising names in electronic music—she's helping define an entire movement. Known for her relentless, hypnotic, and emotionally charged techno sets, Sara Landry has built a devoted global following by creating experiences that are immersive, powerful, and completely unique. This isn't about festival singalongs or commercial radio hits. It's about surrendering to the rhythm, connecting with the crowd, and experiencing electronic music in its rawest form. Her shows have become must-see events for techno fans, and her rise from underground favorite to international headliner has been remarkable to watch. If you're curious about why techno continues to grow around the world—or if you're already a fan of darker, harder, and more immersive sounds—this is one of the most compelling artists you can see today. Come with an open mind and be ready for a completely different kind of journey. 📅 Event Details Date: Friday, June 12, 2026 Doors: 10:00 PM Venue: Echostage Address: 2135 Queens Chapel Rd NE, Washington, DC Support: • Zorza • Conrad Taylor • JSMN 🎟 Tickets & Event Links Official Venue: https://echostage.com Official Event Page: https://echostage.com/events/factory-93-presnts-sara-landry-2026-june-12/ Ticket Source: https://www.ticketmaster.com/sara-landry-washington-district-of-columbia-06-12-2026/event/15006473A2E6942B 🔥 What to Expect • Hard techno and immersive energy • Intense visuals and production • A crowd that came to dance • A very different side of EDM culture 👥 DC Ravers Plan Optional pre-meetup nearby (details in comments) Come solo or bring friends. This one should be a memorable experience. ⚡ Why You Should Go If you’re curious about the harder and more underground side of electronic music, this is one of the most interesting events on the calendar.

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

**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** *Customize the IDE: Building Extensions for Visual Studio Code* Visual Studio Code is one of the most widely used development environments today, and much of its flexibility comes from its extension ecosystem. Extensions allow developers to customize the editor with new features, integrations, and workflow improvements tailored to their needs. In this session, we’ll cover what extensions are and the different types available, including full extensions written in TypeScript or JavaScript, along with lighter-weight extensions such as color themes, language packs, language support, code snippets, and keymaps. We’ll also look at practical reasons a developer might create an extension, from automating repetitive tasks to adding custom tooling. The session includes a hands-on walkthrough of creating a new extension, testing it locally, and understanding the basic project structure. We’ll close with a brief overview of how extensions are packaged and published to the Visual Studio Marketplace and other distribution options. **YouTube Link** TBD

Hey everyone! I am so excited to invite you to our next community gathering at **Two Dollar Radio Headquarters**. If you haven't heard yet, their new **Summer Menu** has officially dropped, and it is absolute "debauchery in food form". We’re heading to Parsons Ave to celebrate independent culture, play some games, and dive into some of the most creative plant-based comfort food in Columbus. Whether you're looking for a night of meaningful connection or just great vegan eats, this is the place to be. **When:** Saturday\, June 13th \| 2:00 PM – 5:00 PM **Where:** 1124 Parsons Ave, Columbus, OH 43206 *** **The Main Event** * **Play:** Bring a favorite game from home to share or dive into the ones available at the shop. * **Connect:** Meet new and old friends in a space that values independent culture and plant-based living. * **Support:** Help us champion a local, family-owned vegan business that doubles as a powerhouse indie book publisher. [[1](https://www.facebook.com/columbusveganevents/photos/join-columbus-vegan-meetup-for-a-game-night-at-two-dollar-radio-hqwhen-saturday-/824512820641009/)] *** **What’s on the Summer Menu?** While 2$R typically serves house-made sandwiches and vegan pastries, they are creating a special menu specifically for our event!. You can also grab a coffee, tea, or a drink from their full bar of cocktails and beer. [[1](https://www.facebook.com/columbusveganevents/photos/join-columbus-vegan-meetup-for-a-game-night-at-two-dollar-radio-hqwhen-saturday-/824512820641009/)] **New Summer Highlights Include:** * **Birria “Beef” Tacos**: A absolute must-try! Featuring birria soy “beef,” housemade chimichurri slaw, cashew crema, pickled onion, and roasted corn relish on corn tortillas. * **Buffalo Eggplant Pita**: Breaded eggplant tossed in smoky dojo hot sauce, topped with avocado, tomato, pickled onion, and cashew crema. * **Falafel Pitas & Bowls**: Housemade falafel served with chimichurri slaw, cashew crema, smashed cucumbers, and fresh greens. [[1](https://www.instagram.com/p/DZNfx9yjg9F/), [2](https://twodollarradiohq.com/weekly-food)] *** **Parking & Logistics** * **Street Parking:** Free public street parking is available on both sides of Parsons Avenue and surrounding residential streets. * **Lot Parking:** The Columbus Metropolitan Library lot (1113 Parsons Ave) is directly across the street. On Saturdays, it is typically available for guest use starting at 6:00 PM (after the library closes). * **Bike Parking:** For those cycling, there is a bike rack conveniently located at the corner of Cline and Parsons. [[1](https://www.facebook.com/columbusveganevents/photos/join-columbus-vegan-meetup-for-a-game-night-at-two-dollar-radio-hqwhen-saturday-/824512820641009/)] I’ve been vegan for five years now, and places like this make the journey so vibrant and easy. I can’t wait to catch up, play some games, and share an incredible meal with all of you. See you there! 🌯📖 ***

We are going to build together with all the CLIs! E will be doing it at Columbus Code and Coffee Agenda --- Hosted By James Power, Organizer Pete Gordon, Organizer Just a Software Guy in the age of the Internet. Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-columbus-presents-ai-improv-lets-build-a-game-together-with-claude-code-codex-and-gemini-and-be-the-judge/.

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/).