Hardware Hacking and Reverse Engineering

We'll come together to talk about writing custom apps. Macoy Madson will show how he applied Handmade principles to creating a custom CAD application for a manufacturing company. He will go over the various features and his criteria for what he picked to build vs buy, as well as lessons learned from the shortcomings of his choices. If we have time, we'll also look at compiling native code to WebAssembly. **Agenda:** \- 2pm \- 3pm: Custom app presentation and WebAssembly \- 3pm \- 4pm: Open\-ended discussions\, presentations\, etc\. \- 4pm \- whenever: We'll go get food nearby\! **What we do** Presentations on lower-level, foundational programming topics, ethical software, knowledge sharing, mentoring, and discussion. **Who we are:** We are all about handmade software. Rather than focus on frameworks, heavy abstractions, and buzzwords - we typically create projects or research topics that build an understanding of foundational computing concepts, essential data structures, and hardware/software interaction. **What to bring?** Bring a laptop, project, or just a curious mind. If you're not sure you're ready to contribute, don't worry: we're all here to share our passions and hone our craft. **If you arrive late:** Please enter the room quietly as to not disrupt anyone that is presenting. You can take any empty seat.

## Join Our AI Workshop! Get ready to dive into the world of artificial intelligence at our fun and interactive in-person AI Workshop. Whether you're a newbie or a tech enthusiast, this is the perfect place to learn, experiment, and connect with like-minded folks. Don't miss out on hands-on sessions, cool demos, and great conversations. See you there! TO REGISTER - https://www.eventbrite.com/e/1984517585520?aff=oddtdtcreator Seema Alexander, Founder & CEO, Disruptive AI Hour 1 — Understanding the Moment ● Why AI is bigger than a tech trend ● The “Yes-And” era: optimize AND reimagine ● AI fluency for non-technical leaders ● Automation vs. agents vs. intelligent systems ● What this means for students, small businesses, and women building in this moment Hour 2 — Interactive AI Fluency Lab ● Live exercises to solve real world problems with learned AI concepts ● Audience-driven experimentation ● Small-group collaboration ● Frameworks attendees can immediately apply ● Group pitches Strategic AI Tool Exposure (1 Hour) Led by Marcus Finley, Chief AI Officer, Disruptive AI (or designated team member) Participants will experience powerful AI tools in real time, including: ● Business productivity AI ● Creative AI applications ● Workflow-enhancing AI systems This is a guided demo + interactive environment. Attendees follow along on laptops. PART III — Vibe Coding Intensive (2 Hours) Led by Addie Cruz, CEO of Clarity App & Vibe Coding Platform Ambassador This session demystifies building. Participants will: ● Explore vibe coding platforms ● Build simple, functional AI-driven outputs ● Learn beginner-friendly creation techniques ● Gain confidence experimenting with AI tools This is hands-on. Every attendee must bring a laptop.

Calling all gamers, developers, and video game enthusiasts! Dive into the vibrant world of indie games and play unique creations by talented local developers. Whether you're a seasoned gamer, an aspiring developer, or just curious about the indie scene, this is your chance to connect, play, and celebrate DC’s gaming community. **PARKING INFO**: Parking around this area is expensive ($15-20) and a bit annoying. However the library is right outside Gallery Place metro station. I would highly recommend taking the metro, or driving to a metro station, parking there, and then take the metro in. Location: MLK Library Basement Floor

**Backpacking 101** is the perfect introduction for beginners and a great refresher for those looking to brush up on their skills after time away from the trail. This hands-on course covers essential topics like selecting and using gear, improving safety and comfort on the trail, and practicing Leave No Trace principles to help protect our beautiful backcountry. Get ready to hit the trail with confidence—let’s make adventure happen! **Requirements** · Participants must 18 or older & a PATC Member · **Fee:** $100 · **Class Size:** Limited to 8 students. · **Waiver:** A signed waiver is required by PATC. **Topics Covered** * Dressing for Success – Clothing, layering, and footwear essentials * Gear Up! – Choosing the right pack, shelter, and sleep system * Backcountry Basics – Water purification & cooking on the trail * Home Sweet Campsite – Selecting and setting up your ideal spot * Leave No Trace – How to protect nature while enjoying it * Trail Hygiene – Sanitation and staying fresh in the wild * Plan & Navigate – Trip planning, maps, and finding your way **Class Structure** * Pre-Class Prep – Watch assigned YouTube videos for a head start * 2 Gear Demos & Discussions – Hands-on learning and Q&A sessions * Overnight Adventure – Put your skills to the test on a backpacking trip! **Classroom Sessions** Location: PATC Headquarters, Vienna, VA Online: There will not be an online option as this has not worked well previously. Time: 6:30pm - 8:30pm * Tuesday, April 7 * Tuesday, April 14 **Weekend Option #1:** This trip will be in Northern Virginia and includes a **6.5 miles hike (each way)** with 2,000 foot elevation. I’d rate this as “moderate" * Weekend Option #2: April 18-19 * Rain Date for Option #2: May 9-10

​Join the [Bitcoin District Initiative](https://bitcoindistrictinitiative.org/) (BDI) for a table tennis tournament fundraiser! Proceeds will support BDI's mission to spread Bitcoin education & adoption across the DMV, helping local nonprofits and communities build lasting financial independence. A portion of the funds raised will also be donated to the WDCTT Academy to create a long-term financial reserve (held in Bitcoin) to secure the future of its nonprofit community programs as the value of that reserve grows over time. 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b) ## ​**Event Details** ​Format: Round Robin play with a championship bracket. All skill levels welcome. Capacity: 36 players. Friends & family welcome to watch! Perks: Lunch included. ​Cost: $50 minimum donation. If you'd like to pay with Bitcoin, email trey@bitcoindistrictinitiative.org! 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b) ## ​**Why It Matters** ​Your support fuels BDI's efforts to bring Bitcoin education and adoption to the DMV, empowering local nonprofits and communities to achieve lasting financial independence. A portion of funds raised will also go to [WDCTT Academy](https://wdctt.com/non-profit/), whose nonprofit programs use table tennis to teach life skills, improve brain health, and strengthen community connections across generations. 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b)

Welcoming back Kecia Deveney for our annual Creative Minds Summit! This mixed media journal is a place for fragments. For what was saved without knowing why. For scraps, thoughts, images, and moments that did not ask to be finished. Nothing here needs to make sense. Nothing here needs to be useful. These pages are allowed to change, to be returned to, or left behind. This book belongs to the act of keeping. In **A Place for Fragments**, you’ll learn how to create a soft, fabric-covered journal using scraps and remnants using cardboard as our substrate; simple, forgiving binding and stitching methods; ways to layer paper and fabric without planning or pressure; how to let materials guide decisions instead of rules; how to work intuitively and trust when something feels complete enough; simple ways to work on inside pages and making an image focal point using resin. Learn more about this class, your student supply kit fee & list via Artistic Artifacts’ secure online website: [https://artisticartifacts.com/products/cms-place-for-fragments-with-kecia-deveney](https://artisticartifacts.com/products/cms-place-for-fragments-with-kecia-deveney) \*\*\* Due to the size or other requirements of the class or concurrent scheduling, some classes are in our second-floor space: access is via stairs only. Registrations for all Artistic Artifacts classes MUST be paid for [through our website](https://artisticartifacts.com/collections/wk), or via a visit to our shop at 4750 Eisenhower Avenue. We encourage you to RSVP here, but to ensure your seat you MUST follow through via our website. [View our complete class policies »](https://artisticartifacts.com/pages/class-policies)

Title: Potential Applications of Negative Radiation Pressure in Astronomy, Medicine and 2WQC Date: April 19 2026 10:00 am - Noon EDT (16:00 - 18:00 CET) Abstract: While we are used to heating and pushing with light, there is also optical cooling and pulling. I will talk about negative radiation pressure, potential ways to generate it, and its novel applications, like non-ionizing medical scanners, 2WQC (two-way quantum computers) in theory solving NP problems, also potential astronomical sources and their observation. Speaker: Dr Jarek Duda is an assistant professor at Jagiellonian University. He holds degrees in computer science (PhD), mathematics (MSc) and physics (PhD). He is mainly focused on physics foundations, information theory, statistical analysis, and is known for introduction of asymmetric numeral systems.

[Profs and Pints Northern Virginia](https://www.profsandpints.com/washingtondc) presents: **“Goddess of Spring and the Underworld,”** an introduction to the Greek goddess Persephone in her many incarnations, with Brittany Warman, former instructor at Ohio State University and co-founder of the Carterhaugh School of Folklore and the Fantastic. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/nv-persephone](https://events.ticketleap.com/tickets/profsandpints/nv-persephone) .] Join Brittany Warman, who has earned a huge following among Profs and Pints fans by delivering fantastic talks on folklore, myths, legends, and fantasy, for the perfect event for the season: a look at the spring goddess Persephone and the many ways in which she has inspired the human imagination. The story of Hades and Persephone is one of the most famous—and most retold—episodes in Greek mythology. Persephone’s abduction, her interlude in the Underworld, and her partial return to the world above have inspired statues and webcomics, ancient cults and contemporary poetry. Thousands of years after her tale was first told, we’re still fascinated by this goddess. Brittany will discuss how Persephone’s appeal lies in her liminality in being caught between two very different worlds and lives. She represents spring, renewal, and rebirth because Earth blooms with her return, but she’s also the Queen of the Underworld. From a 21st-century perspective, she’s basically a goth girl adorned with a flower crown. We’ll also look at Persephone’s mythic roots, including their connections to the Eleusinian Mysteries. And then we’ll dive into some of the ways that Persephone has been revised and retold in recent years, from the Tony award-winning musical *Hadestown* to the webcomic *Lore Olympus* to memes and fairy tales and fashion. After all, why be just one thing when you can be the queen of both spring and darkness? (Doors: $17, or $15 with a student ID. Listed time is for doors. Talk starts 30 minutes later.) Image: From “Proserpine” (Persephone) painted by Dante Gabriel Rossetti in 1882. (Birmingham Museums Trust / Wikimedia Commons.)

**MoCo Psychedelic Society — Monthly Gathering** 📅 Date/Time Sunday April 19th \| 1:00 – 3:00 PM 📍 Charles E\. McGee Public Library\, Downtown Silver Spring — Small Room *** Come join us for our monthly gathering — a space for fellowship, learning, advocacy, and community connection. Whether you're a familiar face or joining us for the first time, you are welcome here. *** **✨ This Month: Psychedelic Primer, Part 1 of 2** Are you new to psychedelics, or simply curious to learn more? This is the meeting for you. We're kicking off a two-part educational series with a friendly, accessible overview of psychedelic medicines — what they are, how they work, and why so many people and researchers are paying close attention to them right now. We'll take an in-depth look at five substances: * 🍄 **Psilocybin Mushrooms** * 💊 **MDMA** * 💉 **Ketamine** * 🌿 **Ayahuasca** * 🔬 **LSD** No prior knowledge is required — just curiosity and an open mind. *** **A Few Important Notes** The MoCo Psychedelic Society is a community space for education, connection, and advocacy — not a venue for sourcing or sales. All information shared at this event is for **educational purposes only** and does not constitute medical advice or encourage the use of any illegal substance. A note on legality: Most psychedelic substances are currently classified as **Schedule I** controlled substances by the DEA. Their use outside of clinical trial settings or states where they are becoming legal remains illegal in the United States. **Ketamine** is an exception — it is legal when administered by a licensed medical professional. *** We hope to see you there. Come as you are. 🌱

THIS CLASS IS OFFERED THROUGH CAPITAL PHOTOGRAPHY CENTER **PLEASE REGISTER WITH CAPITAL PHOTOGRAPHY CENTER, NOT MEETUP!** https://capitalphotographycenter.com/classes/class/2026-04-19-sculpting-photos **Sculpting Photos** The sculptures in the west wing National Gallery of Art offers photographers a unique creative challenge: The art is already shaped by light, form, and intention. In this class we will explore how photography can re-imagine three-dimensional works through thoughtful observation and creative choices. By paying close attention to light, shadow, texture, and perspective, photographers can reveal new interpretations of sculptures, highlighting details, moods, and relationships that may not be immediately visible to the naked eye. Through guided looking and hands-on practice in the galleries, students will learn how camera position, framing, depth of field, and timing transform solid, static objects into dynamic photographic images. Whether isolating a gesture, emphasizing scale, or experimenting with abstraction, this class encourages photographers to move beyond documentation and toward personal expression, using sculpture as a powerful starting point for visual storytelling. Whether you’re new to photography or looking to deepen your practice, this class invites you to see the sculpture and your creative process in fresh ways. In this class you will learn to: 1. Develop observational skills by learning to analyze sculpture in terms of form, space, light, and texture, and translating those observations into intentional photographic choices. 2. Explore creative photographic techniques such as framing, perspective, and selective focus to reinterpret sculptures and create expressive, original images in an indoor museum setting. 3. Build visual storytelling skills by using photography to convey mood, movement, or meaning, helping students articulate a personal response to sculptural works. All cameras are welcome, from your smartphone to DSLR. However, we recommend the camera you use has multiple lenses or a zoom, and ability to adjust exposure. Lenses in the range of 28mm to 200mm would be appropriate. No flash or tripod since we'll be in a museum. Questions can be directed to Marie Joabar at info@capitalphotographycenter.com. Class limit: 8-9 *** **THIS CLASS IS OFFERED THROUGH CAPITAL PHOTOGRAPHY CENTER** https://capitalphotographycenter.com/classes/class/2026-04-19-sculpting-photos

**Free Tickets:** [https://www.tixr.com/amp/ddncdy/178041](https://www.tixr.com/amp/ddncdy/178041) **We are attending the 5:00 pm to 7:00 pm session on April 18.** **Note: All the sessions for Saturday, April 18, have sold out. There are some sessions still available on Sunday.** Asia in a Bite Food Fest (ABFF) is a free-entry outdoor Asian street food series bringing bold flavors, live DJ music, merch vendors, and community vibes to Washington, D.C. throughout the summer of 2026. ## What to Expect * **\- 30\+ Food Vendors and Merch Vendors** * **\- Live DJ Music All Day** * \- Outdoor family\-friendly atmosphere * \- Rotating local favorites & pop\-ups * **\- FREE admission\!** **More Information:** [https://www.asiainabitefest.com/](https://www.asiainabitefest.com/) **MEETING:** We will start to gather outside Tingey Plaza at 4:45 pm. I will be wearing a Geek cap. We'll head into the festival when it opens. Don't worry if you miss us when we're outside the festival. Just message us on Discord when you arrive, and I will post our location along with a what3words link. Learn more about what3words: [https://youtu.be/DLG6WFx3XHQ?si=dRjkpGBNWkIBA1f5](https://youtu.be/DLG6WFx3XHQ?si=dRjkpGBNWkIBA1f5) A #aiab channel will be created on the GNO Discord server on the day of the event. It's to be used to help everyone communicate and find the group. You can join the Discord server here: [https://discord.gg/d4e9MKScVP ](https://discord.gg/d4e9MKScVP)(link should be permanent. Please let me know if it stops working) **Please Note:** We are not the organizers of the festival. Geek Nite Out is a Meetup group that is attending it. **METRO:** Tingey Plaza is about a 10-minute walk from the Navy Yard subway station, along the green line.

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.

The emotional pain from past bad experiences easily lingers in the present, making it hard to enjoy life and create your future. Even when you think you've moved on, the negative emotions can be triggered, sending you back into the pain of that experience. And we are talking about pain; emotions such as grief, depression, anxiety, fear (or terror), boiling anger, simmering resentment, feelings of shame, blaming and regret can leave you incapacitated to a greater or lesser degree. In this local event we will be discussing the reasons why these past bad experiences have the power to affect you long after they occurred. We'll go over why the emotional pain can be so strong. We'll also discuss some simple solutions to overcome your emotional pain and be free to fully enjoy your life again. Examples of painful experiences include: * A broken relationship or divorce. * Death or loss of a loved one. * Death of a pet. * A sudden shock or bad news. * A betrayal. * Being part of an abusive relationship. * A bad injustice. * Loss of a job, position or business. * A grave illness or injury. The negative emotions from these experiences don't just go away on their own. But the good news is there is a way to clear them out of your way. Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is sponsored the Dianetics & Scientology Self-Improvement Center.

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services) Sign up also accessible via [Transform Labs Luma](https://luma.com/55umjqta)

Do you want more motivation and confidence to build Lasting Relationships? This is a free, in-person meeting on the subject of betrayals, losses and how to get over them so you can build lasting relationships. Are you burdened by a stressful relationship? Unhealthy relationships can trigger feelings of anger, despair or self-doubt. They can create dwindling spirals of fights and seeking to make-up, or trying to “pin the blame” on someone or something. If you don’t find the RIGHT reasons, or select the correct sources of the problem, the problem can just get worse and worse. Whether in love or personal ties, with friends or at work, our life really IS affected by the quality of our relationships. Good ones can promote pleasure and survival, while less optimum ones can lead to annoyance, anger, self-doubt, stress, or even affect our health and ability to survive well. Whether you are suffering from a divorce, or a painful break-up, don’t know who to trust (or who to CHOOSE) as a partner, friend, boss or employee - the anxiety of relationship troubles can really make a mess of things. Maybe you’ve suffered a betrayal, or are dealing with hostility or criticalness or invalidation. Dwindling relationships can involve destructive behavior, where we hurt those we love, or start succumbing to self-destructive thoughts, attitudes or behaviors that spiral out of control and affect much more than our immediate relationship. Past losses in love or life can affect how we act or react to new people and situations and hold us back from even starting to create new, possibly great relationships! How can one get back onto a saner course of action? Come to our Meetup, where we can introduce you to some of the knowledge, tools and techniques of the breakthroughs in the field of the mind that we can apply to this ever important area of life: human relationships! Break free from self imposed limitations Here we will discuss: • How to “erase” the trauma of past hurts and betrayals so that one isn’t always repeating past mistakes. • Why and how do the negative emotions of others affect you? • Why is my partner withdrawing and what can I do about it? • Why do we sometimes feel compelled to hurt the ones we love? • Fights & arguments - what's really behind them? • What underlies “corrosive criticism” or the need to invalidate self or others? • How one can stably change one’s outlook on life so they can affect positive change? • Where do compulsive destructive behaviors come from and what can be done about them? • How to form closer bonds & keep growing the relationships with the people you care about? • How to enhance one’s own ability to survive and create positive healthy relationships whether in love, family & friendships or in work, business or one’s career? Relationships can be hard and life itself IS challenging. Why not arm yourself with the knowledge and breakthroughs that have been made about the mind, mental reactions & interpersonal relationships, so that one has better awareness and control over themselves and life in general. Learn where painful experiences are “stored” and how they can unknowingly affect us. You will also find out how one can “erase” those past painful experiences so that one is free to move forward without being tripped up by the past. Learn too, about what can lead some people to become “toxic” personalities and how to identify those traits in others so you won’t be tripped up trusting the wrong person. Our free Meet-ups occur in a safe environment where one can learn, without fear of judgment or criticism, and without the recommendation of harmful mental techniques or therapies, just how YOU can get yourself onto a happier & more successful path: in love & in life. Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This class is held at the Dianetics and Scientology Life Improvement Center.

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

This is an in-person meeting. Would you like to know the Real You, not just a shadow of yourself? Does your life energy feel somehow trapped within? Does your self-confidence get easily shaken? Do you get in the way of your own goals? We will discuss the real source of all this, what holds you back in life, and how to handle it so you can achieve more successful and happier living. Perhaps you get weighed down with negative emotions you can't seem to shrug off. Or find yourself doing strange and irrational things - not really being yourself. We will cover why that is and tools that work to help you unearth your self, your self-confidence and motivation. This meeting will help you learn about how to effectively overcome: -Out-of-control unwanted emotions -Low self-esteem -Anxiety -Negativity -Stress -Irrational fears -Traumatic or painfully emotional incidents -Breakups -Betrayals -Feeling like you're not really yourself -Self-doubt... We will discuss how to unleash the inner you and tap into your true potential. So come to this online meetup! This meeting is sponsored by the Hubbard Dianetics Foundation of Central Ohio

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!