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 for a special post-AWS DC Summit **“Meet the Community” evening** with **AWS DMV User Group** with special guest, AWS Principal Developer Advocate, Aaron Hunter! This casual networking session is a great way to connect with fellow builders, cloud enthusiasts, and AWS community members after the AWS DC Summit. Whether you’re a student, developer, architect, or just curious about cloud, this is a perfect space to meet like-minded people, exchange ideas, and grow your network. Expect light conversations, meaningful connections, and a relaxed atmosphere as we bring the community together after the big event. 📅 **Date:** July 2, 2026 🕠 **Time:** 5:00 PM – 8:30 PM 📍 **Venue:** Amazon HQ2, WAS19 2.103 + 2.104. 525 14th St S, Arlington, VA 22202 Looking forward to seeing everyone there and discussing the summit with great energy and conversations! Please RSVP with the same name as is on your state-issued ID, which will be required to check in at security.

Join us at **Hashtag** in Herndon on Thursday, **July 2nd** at **6pm**. Adventure and roll dice with this week's **Starfinder** **GM: Maria**. **The story:** The invasion of the Wreck of the Returned continues as a team of Starfinders enters the magical heart of the Wreck, a metaphysical liminal space occupied by Elovai’s mind. But can a foe as dangerous and powerful as a First One be defeated in a realm under her control? Battle your way through the heart of the Wreck to take down Elovai in a final showdown over the fate of Akiton! **Notes**: Replayable (with a different character) This is an adventure in the ongoing Invasion’s Edge metaplot, and is part two of a two-part scenario series. This adventure’s direct prequel is *[Starfinder Society Scenario #1-24: Final Gambit: Part One](https://store.paizo.com/starfinder-society-scenario-1-24-final-gambit-part-one)*. \*\*\*\* **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....

Details **Location:** Bus Boy and Poets (K st) The purpose of Thinkers and Drinkers is to facilitate casual but meaningful and interesting conversations with other people in a face-to-face setting. The topics cover a wide variety of issues and are different for every meeting. While conversations may get heated at times, we ask that all members be respectful of each other and refrain from personal insults. **Topic: Party Politics and the Future of the Two-Party System** For more than 150 years, American politics has been dominated by two major parties. While third parties have occasionally influenced elections or introduced new ideas, the Democratic and Republican parties have remained remarkably resilient. In recent years, public frustration with the current system has become increasingly apparent. According to a 2025 [Gallup poll](https://www.pewresearch.org/politics/2026/05/01/americans-continue-to-view-both-the-republican-and-democratic-parties-negatively/?utm_source=chatgpt.com), **62% of Americans believe the Democratic and Republican parties are doing such a poor job that a third major party is needed.** This dissatisfaction has led the percentage of Americans identifying as political independents to increase from **33% in 1988 to a record 45% in 2025**, **Questions to Consider:** 1. Could a third party ever find success within the near future? 2. Will the main parties see an increase in factionalism? (Socialist faction in the Democratic Party MAGA in the Republican Party) 3. Would electoral reforms such as ranked-choice voting or proportional representation improve political representation? 4. Is today's political polarization primarily caused by the two-party system? 5. What do you think American politics will look like 20–30 years from now?

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/

# Pathfinder Society Scenario #7-16: A Star's Journey A Pathfinder Society adventure for 1st-2nd level characters, playable in 2-3 hours. During the exploration of an ancient Jistkan ruin in Katapesh, the automaton Star goes missing, leaving their archeologist companions worried for their safety. The head archeologist calls upon the Pathfinder Society for assistance, but warns the agents that arrive that the ruin is filled with dangerous creatures and traps and that they should be careful while exploring. A strange frozen automaton meets the Pathfinders on each floor, slowly pointing the way deeper and deeper into the ruin. Will they find Star? Or does the automaton have more malicious motives? Written by Adam Wright Expected release date: April 1st, 2026 **Scenario tags:** **Repeatable**

Social Sips & Bites is setting sail in style! 🚢✨ Join us for an unforgettable escape filled with ocean views, elegant evenings, and island indulgence. The Bermuda await. Exciting updates coming soon—keep an eye out!

**THE POWER OF THE SUBCONSCIOUS OVER YOU** You are welcome to arrive 15 minutes early for refreshments! At the lecture "The Power of the Subconscious", the speaker will clearly and understandably explain topics such as: * What is the exact definition of the Subconscious Mind? * How does it inflict unwanted feelings and anxiety in you? * What determines how much pressure it exerts on a person? * What exactly is the goal of the subconscious? This is not just a lecture where you sit quietly and listen. It's interactive and LIVE, so you can ask questions at any time. And the most important topic: **HOW DO YOU TAKE CONTROL OF YOUR SUBCOUNSCIOUS!** This group is sponsored by the Dianetics Life Improvement Center.

Playtesting Agent and Battle-scale of the Zone-17 role-playing and miniatures game.

Join us on Wednesday, July 1 8:00-10:30 PM. Anna Rain calls while Paul Oorts (mandolin and accordion), Tina Chancey (fiddle), and Francine Krasowska (piano) play the music Register: [https://www.fsgw.org/event-6725337](https://www.fsgw.org/event-6725337) (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!**

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.

We have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd

These meetings will be a building block approach to learning photographic mastery over three disciplines: Completely Mechanical (CM) - A 13-week series Completely Exposed (CE) - A 26-week series Completely Composed (CC) - A 52-week series All three series will run concurrently and will dovetail as follows: Q3/26 - CM (Iter 1), CE (Iter 1, Pt 1), CC (Iter 1, Pt1) Q4/26 - CM (Iter 2), CE (Iter 1, Pt 2), CC (Iter 1, Pt2) Q1/27 - CM (Iter 3), CE (Iter 2, Pt 1), CC (Iter 1, Pt3) Q2/27 - CM (Iter 4), CE (Iter 2, Pt 2), CC (Iter 1, Pt4) That's likely confusing, but essentially, CM offered 4 times in that period, CE offered 2 times, and CC offered 1 time. **TO BE CLEAR - THERE IS NO CHARGE FOR THESE CLASSES.** This is an aggressive series, with presentations, homework, group shoots to be added in, likely at LEAST twice a month, image critiques, and an expectation that you are willing to put in the work to elevate your photography significantly. Open to all levels and all equipment levels. Don't let hesitation about your skillset and/or gear keep you from a one-time opportunity. The group will meet every Tuesday, with periodic exceptions, and we will try to keep as close as possible to the original plan. Obviously, more data is coming and will be published as this is further developed, but now is the time to decide if you want to be a part of this.

You can sleep in on the Sesquicentennial (observed), we’re shifting to the following Friday. But join the local UX community for a chat and some biscuits to catch up. If you were in CA for Figma Config, tell us all the lines and you can tell me how I can animate an SVG without coding it by hand, and why I’d even want to. Thanks to the team at Nationwide of supporting the group.

This will be our regular monthly meeting, with a new topic picked each month. Topics to be determined and posted soon.

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!