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!

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.

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.

Join us on **Thursday, June 4th** for Kickback & Connect in **Washington, D.C.** From magazines to motion graphics and from newsrooms to nonprofits, if you make things in D.C., you’re invited. This is a low-key happy hour bringing together designers and creatives across disciplines in the DMV to kickback, connect, and share ideas—no panels, no pitches, no pressure. We hope to see you there! **Music by: Friends on Mars** Hosted by Good People DC and **[SPD](https://www.spd.org/)**, a nonprofit design community rooted in publishing and creative excellence. No cover charge = no excuse not to come Must be 21 to enter. Please drink responsibly.

Join us at **Hashtag** in Herndon on Thursday, **June 4th** at **6pm**. Adventure and roll dice with this week's **Starfinder** **GM: Maria**. **The story:** Despite being slowed by a disastrous crash landing, Elovai, master of the Wreck of the Returned launched her invasion of the planet Akiton, using her nodocite armies, converted minions, and reality-warping magic. The Starfinder Society has worked to counter this invasion, partnering with numerous allies. Recently, the Starfinders launched a rescue mission using a secret entrance, to liberate innocents captured for conversion. Though they succeeded (mostly). Determined to defeat Elovai before her forces overrun Akiton, First Seeker Sarmak is left with no other choice but to perform a concerted assault on the Wreck of the Returned alongside his fellow Starfinders and allies. While this joint coalition launches their well-planned assault and punches a whole in the Wreck’s defenses, a team is tasked with slipping into the Wreck, reaching the central core, and destroying Elovai. Without Elovai, this initial, first wave invasion launched by the First Ones will be thwarted, and the Wreck’s many forces will lack leadership, simultaneously saving Akiton and opening the Wreck of the Returned to future exploration. The fate of Akiton and the future of the Pact Worlds is in your hands! **Notes**: Replayable (with a different character) This is an adventure in the Invasion’s Edge metaplot, and is part one of a two-parter. The direct sequel is *#1-26: Final Gambit: Part Two*, which will probably be run sometime in July once it's available. \*\*\*\* **The Characters:** You can use a [level 5 pregen](https://paizo.com/starfinder) *or* bring your own if you have a society character in the 5-6 range. We'll have have paper copies of the pregens if anyone needs one. You can also make your own level 5 character if you feel confident in the system. -Some character building options are [Starbuilder 2e](https://pathbuilder2e.com/app.html?v=102b) (made by the maker of Pathbuilder!), [Hephaistos](https://sf2e.hephaistos.online/), [Demiplane](https://app.demiplane.com/characters), using the new Starfinder Player Core and pen/[paper](https://downloads.paizo.com/RemasterPlayerCoreCharacterSheet.pdf#), etc. You can use options from the [Invasion's Edge Player's Guide](https://downloads.paizo.com/OP-Files/SFS+Invasions+Edge+Players+Guide.pdf) too. \*\*\* **THE GAME:** [Starfinder](https://paizo.com/starfindersociety) 2e is a role-playing game similar to Pathfinder 2e (or Dungeons & Dragons) but in space with magic *and* technology. In this one-shot, you can jump in as a new player or join if you're more experienced. \*\*\* If you have any questions, feel free to comment or send a message.

• What we'll do On https://blackecon101.podbean.com/ Thursdays at 6 pm. discussing the economy....

Join us on Wednesday, June 3 8:00-10:30 PM. Anna Rain calls while Niki Yeracaris (fiddle), Colleen Reed (flute), and Francine Krasowska (piano) play Register: [https://www.fsgw.org/event-6689122](https://l.facebook.com/l.php?u=https%3A%2F%2Fwww.fsgw.org%2Fevent-6689122%3Ffbclid%3DIwZXh0bgNhZW0CMTAAYnJpZBExbW54OW83YXpWNzBoY0xjQ3NydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR5SWMEqZuImV4scHAIiWMYNPL_VZKcSqOP34sBpgzxj8A1JCqioabCSjeU69g_aem_aw4GTDh7YOc-DwNGOjl3DQ&h=AUBtJO-EzYlr7H6FgNT2ThjbUhQtjx0zEzFXZRps92LxydO7y6cQRER1Nt4bUUro4_t2tQ3VJKqiyNTH6QOSYpZZP7tL7MAm9C3w9CuDVgfzu4raVL0P6pAQUSzzHq1xpG7AR5WbXLo1NEPu1rpHYm1AazezpKa0eFY5iA&__tn__=q&c[0]=AUD6mc4zC9kLtnmlat_HidXcpr3eUf56g_NNMmIK_t158OqokBSyF_bafaNyQUfn9AWkQRp8tgTi3GIbeloSUiMhzHcm8dWXPtcjgjm1XNBswbMfmhqy6eSUWw1mtLK4tRF4YPwFF6HP6JwLCHlY4I0ToDt3QUZkqrg) (Please note, you are not registered by responding on meetup, you must register through the FSGW website, or at the door if tickets are available) The FSGW weekly English Country Dance offers delightful dancing, led by talented callers, accompanied by top-notch musicians playing a wide variety of instruments. The crowd is friendly and enthusiastic; new dancers are always welcome and can get an informal lesson if they arrive around 7:30. You don't need to bring a partner, or dress up. * If you have not previously attended a Wednesday night English country dance at Glen Echo, you may select "first time free" when registering. New dancers are welcome. If you have no previous English country dance experience or would like a refresher, please arrive at around 7:30 for a lesson. Covid Protocol: masks and vaccinations are encouraged but not required. Some dancers are sensitive to fragrances, and they are grateful when you skip the perfume and scented after-shave. Additional information about this weekly event is available on the English Country Dance (in-person) web page. [https://www.fsgw.org/ecd](https://www.fsgw.org/ecd) **Pay at the door:** Admission - $15 FSGW Members, $8 Students and those with limited income, $17 Others. **Questions?** Email English Country Dance * **We look forward to dancing with you!**

DC Code and Coffee is an inclusive, informal co-working session. It's community-led and community-run by devs, for devs. People of all skill levels attend. Whether you’re dev-curious, aspiring, or a professional developer, we’d love to have you! Come chat or learn to code on a Sunday afternoon with coffee and cool-inclusive people. Bring your laptop! We typically meet every month on the weekend. **Join our online community!** For all things Tech in DC and to get latest updates and tech events from the DMV area, join the [DCTech Slack](https://dctech.chat/). All DC Code & Coffee announcements are in the #dccodecoffee channel **How it works** Near the beginning of the event, we do an introduction circle. You say your name, what you can help others with, and what you would like help with. You can also share job opportunities. After the introduction circle, everything is self-organized.

With war breaking out, the gnomes of Brastlewark in Cheliax can no longer cling to their carefree ways. Self-proclaimed King Drum Thornfiddle is eager to ingratiate himself to Queen Abrogail, and so conscripts the city's magical and creative resources towards the war effort. A few gnomes have broken free, and they have brought evidence of the various works being created in Brastlewark. They're no fighters, though. It'll be up to the Pathfinders to get them safely across the border to Andoran and freedom. A Pathfinder Society Scenario designed for 1st- through 4th-level characters, playable in 4-5 hours. Written by Elizabeth V Nold **Scenario tags:** Hellfire Crisis

Date: June 7 2026 Sunday 10:00 am - Noon EDT Full title: Machine Learning for Reliable Quantum Computing: An Algorithm–Hardware Co-Design Perspective Summary: Reliable quantum computing requires co-design across the full stack, including algorithm structure, compilation, and execution, rather than isolated optimization of any single layer. This talk presents a unified framework in which these layers are jointly optimized under realistic hardware constraints. Structure-aware compilation exploits algorithmic interaction graphs to reduce circuit depth; joint optimization across mapping, term ordering, and algorithm parameters yields significantly improved success probability; and execution-layer analysis reveals that error mitigation effectiveness depends critically on circuit symmetry and native gate choice. While demonstrated on superconducting quantum processors, the underlying co-design principles are potentially transferable across architectures. Building on this foundation, the talk highlights machine learning as the key enabler for closing the feedback loop: data-efficient, parameterized noise models learned directly from workload execution data achieve substantially improved predictive fidelity over vendor models without the overhead of dedicated characterization. These insights situate the co-design perspective within the emerging framework of quantum deep learning. In this broader setting, the talk also presents an operational definition, a unifying taxonomy, and a benchmarking protocol grounded in explicit resource contracts. Speaker: Dr. Yanjun Ji has an interdisciplinary research background in Physics and Computer Science. In 2020, she completed my Master's degree in Theoretical Physics at Saarland University. In 2024, she earned her Ph.D. in Computer Science at the University of Stuttgart. She is currently a postdoctoral researcher at Forschungszentrum Jülich. She is committed to interdisciplinary research at the cutting-edge convergence of quantum computing and artificial intelligence. Her research encompasses both foundational theoretical investigations and the development of practical applications, aiming to serve society and benefit humanity. Moderators: Dr. Pawel Gora, CEO of Quantum AI Foundation [Quantum AI Foundation](https://www.qaif.org/ "https://www.qaif.org/") Dr. Sebastian Zajac, member of QPoland [QPoland - QWorld](https://qworld.net/qpoland/ "https://qworld.net/qpoland/")

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

Come hungry for culture, community, and feijoada. The kick off to Afro-Bahia Fest starts here. Not only will enjoy typical culinary trats from Bahia, there will be live music plus dancing. this w I ll be a night you won't forget. Get your tickets now!

**Click** [here ](https://www.eventbrite.com/e/patio-social-for-neurodivergent-adults-tickets-1990579924138)**for non-members to register and submit your info for the activity.** **[Constellations ](https://www.harringtonmatchmaking.com/constellations-membership)Patio Social + community lore activity** in Arlington, Virginia. This will be a relaxed patio social for neurodivergent adults (most will be 20s/30s) focused on conversation and meeting new people through a low-key activity. Participate in our “Community Lore” activity — a social scavenger hunt-style game designed to make mingling feel easier and spark better conversation. Before the event, attendees will submit a few fun facts, unusual skills, niche interests, and/or random details about themselves. We use these anonymous submissions to create the activity cards. When guests arrive, anyone who wants to participate will receive a card featuring fun facts submitted by other attendees. As you mingle throughout the evening, you’ll try to figure out which person matches each item on your card. We’ll have reserved patio seating, casual games, complimentary appetizers, and drinks available for the group. Alcoholic beverages and additional food or entrees can be purchased individually. While we do have reserved patio seating, this may not be the best fit for individuals who are highly sensitive to noise or busy environments. **Click [here](https://www.eventbrite.com/e/patio-social-for-neurodivergent-adults-tickets-1990579924138 ) for non-members to register and submit your info for the activity.**

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.

Topic to be announced. **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 have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd

If you are interested in selecting investment choices for your 401(k) or other workplace savings plan, minimizing your income tax liability, or identifying the most effective investments for your brokerage account, we are the group for you. We are a local chapter of Bogleheads, whose investment strategy can be found here: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy Or you can peruse the Boglehead forum here: https://www.bogleheads.org/index.php I look forward to seeing you there. Mark Vonder Haar

**Welcome to the Women’s Columbus Bogleheads® Sub-Group** This sub-group is for **women who want to learn and discuss finances in a safe, supportive space**. For those interested in moving towards financial independence and retirement by learning investment basics, choosing your 401(k) investments, minimizing taxes, and more. We’re a local chapter of **Bogleheads®**, following a long-term, practical investment philosophy: [Investment Philosophy](https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy): https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy [Bogleheads Forum](https://www.bogleheads.org/index.php): https://www.bogleheads.org/index.php No question is too small, and no experience is too simple. Share, ask, and learn — at your own pace, without judgment, in a group of like-minded women. Let’s build confidence and knowledge **together**!

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. So please RSVP for a head count!

QA or the Highway is a one-day, affordable, regional, professional conference featuring real-world experience and thought leadership in the QA and testing industry. This is a ticketed event please register here: https://www.qaorthehwy.com/ Featured Keynote Speakers: **Matthew-Hope Eland** **(Wizard at Leading EDJE)** \- An AI Specialist and Wizard at Leading EDJE who is known to teach software engineering\, AI\, and data science concepts in the most ridiculous ways possible\. Matt has used machine learning to settle debates over whether Die Hard is a Christmas movie\, reinforcement learning to drive the behavior of digital squirrels\, data analytics to suggest improvements to his favorite TV show\, and AI agents to play board games and create an AI agent with the personality of a dog\. Matt is the author of "Data Science in \.NET with Polyglot Notebooks" and "Refactoring with C\#" as well as several LinkedIn Learning courses\. Matt helps organize the Central Ohio \.NET Developer Group\, runs several blogs and a YouTube channel\, has a Master’s of Science in Data Analytics\, and is a current Microsoft MVP in AI and \.NET\. **Tatyana Arbouzova** **(CEO at Innovate QA)** \- Tatyana Arbouzova is an engineering and business leader with a strong background in Quality Engineering across multiple industries\, including Big Tech\, Healthcare\, and Entertainment\. She has held leadership roles at world\-class companies such as Microsoft\, VMware\, Disney\, and The Pokémon Company International\, where she focused on building quality\-driven cultures and scaling teams to deliver high\-impact products\. With decades of experience\, Tatyana has helped organizations transform their quality practices so teams can deliver software efficiently\, confidently\, and with measurable business outcomes\. Today\, Tatyana advises software companies on adopting AI to optimize quality practices and improve how software is delivered at scale\. She is also a passionate community builder and the founder of Innovate QA\, a thriving Seattle\-based community and conference for quality professionals\.