Robotics

Looking for a new skill? Want to seem mysterious when people ask about your hobbies? Enjoy puzzles? Lock picking might be right for you! Is this legal? Yes! Is it fun? Yes! The meeting is very casual, come and go as you please. We meet in the upstairs area of Board Room. No payment, skills, tools, or RSVP necessary. If you can make small precise movements with your hands, you can learn to pick locks. Introductory talk at 7pm. All are welcome. We meet in a bar but minors are allowed to attend. We are not in a private room; parental discretion advised. If you are a minor or are responsible for one who's attending, please email the organizer in advance at chapter-DC@toool.us Open invite; bring friends! We are the DC chapter of TOOOL. More information here: http://toool.us/

Let's get together to play some fun BB level Quads games at Quincy Park. **Format**: Quads and Doubles **COST**: FREE **Court Type**: Outdoor grass **Minimum Skill Requirements**: Intermediate-BB (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Smiley Social documents:** 1. [Group Rules ](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco) 3. [Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/)

This class will be a terrific skill builder. Caixa (Brazilian snare drum) is fundamenta to the energetic pulse of samba from Rio de Janeiro. Repinique's unique tonality adds texture and momentum. Learn the basics and beyond. Improve your technique, heighten your playing stamina and learn new patterns! Get new information from Rio to grow your skill. $20 Drums provided.

Covid Alert: We will start having classes again at Canal Park on Wednesdays and Saturdays. Please bring your own hand sanitizer, and mask are a must! We'll practice from a safe distance from each other; and progress from there. "DC Kali" is an official training group for FCS Kali. Our curriculum includes knifes, swords, stick-fighting, striking, and grappling; but we place a special emphasis on edged weapons. Please come out and learn some Kali. Our aim is to train hard, learn some sound defense strategies, and make friends along the way. Although FCS Kali is a combat-oriented systems that involves edged weapons, we provide a safe environment for learning w/o sacrificing realism in our training. We teach in small semi-private groups, allowing each individual student to progress as quickly as he or she can absorb the info being taught. Hope to see you all there. Mosi K. Jack, Esq. Training Group Instructor · FCS Manong (under Tuhon Ray Dionaldo) http://www.fcskali.com/ ) FCS Kali: Founded by Tuhon Ray Dionaldo,Filipino Combat Systems is an organization dedicated the preservation and promotion of all Filipino Martial Arts. Filipino Combat Systems(FCS) is an organization/system with members from around the world. FCS is based onTuhon Ray Dionaldo's over 35 years of practicing various FMA (Filipino Martial Arts) styles. He's combine elements of each, into one system that's efficient, fast, concise, and logical. FCS members have extremely diverse backgrounds, and Martial Arts systems. We’ve all come together because of our love of the Filipino Martial Arts, and our unwillingness to become involved in the politics that has so often stifled our growth. Please pick one of the following class and fee combos: Drop-In Fee: $25/per class (after 1st free Saturday class) Monthly fees: $80/month (Wednesday park classes included for free), or Quarterly fees: $210/every 3 months (which comes to $70/month; includes the Wednesday park classes), or Wednesday Park only: $50/month • Credit cards and Paypal are preferred method of payment (online payments via Square are available at: https://squareup.com/market/dc-kali ) • One free trial class is permitted (but must rsvp ahead of class) • Equipment: if you have training knives, rattan sticks, training swords, and/or mma gloves bring them. If not, we may have a few extra. Training Videos http://www.fcskaliphilippines.com/fcs-curriculum-videos.html http://www.bloodnbonesgear.com/id5.html

At this event you'll discover how to better understand and control your subconscious mind, helping you overcome doubts and fears. If you have anger issues, depressions and anxieties. this event will show you how to overcome them.

**The rules are simple:** Take photographs **Each and Every Day** and post your best **ONE** (1) shot of the day - **EACH DAY** for **April**. If you happen to miss a day or two (life happens), it is **OK** to catch up and upload the photos for the days missed or just skip those days. **Please don't post over 2 to 3 at a time**. This is part of the learning process. **DO NOT POST TO THE ALBUM *UNTIL* AFTER 04/01/2026**. Please use a browser like Chrome and the Meetup.com website to post the images, as **the Meetup app does not handle albums very well**. Towards the top-left of the page is a link to **Add Photos** for uploading your photo to the album. **CONFIRM** **that your photo was Added to the correct Album.** Remember to post your **best photo (JUST ONE)** you took every day on that day! **DO NOT POST PHOTOS FROM ANY OTHER TIME!** If you have time to post an older image, you can take a new image and post it. Be creative. Please **add a caption** to know how far you are in the process. After you upload the image you took that day, find your photo at the end of the album, and edit the caption to state the day and total of days in the month like this:**?/30**. You can add the title of the image if you wish. A good title can make a photo! So, your photo for the **April 1st** caption would be "**1/30: My great photo!**" \*\* Adding a caption helps you keep track of where you are in the month. It does help. The purpose is to have fun and get in the habit of shooting every day. Learn to use your camera. Read your manual and test out a new feature you have never used before. Sometimes picking a theme/project can help focus (pun intended), like flowers, your pet(s), a lens you haven't used in a while, or whatever your passion is. Or try something new... The **end date is 04/30/2026**. Meetup.com does not allow events to be longer than 2 weeks. Other images that were not taken by you will be removed. Please keep the images family-friendly. You need to be a member of the Virginia Beltway Photography Group. I look forward to seeing how far people go and grow as better photographers!

Wednesday night skate and chill is our weekly group ride. DCESK8 has been hosting this weekly ride for several years now. We are very active in our group chat and that is where you will find the most up to date information on the rides. Follow the link below to join. Join our Telegram chat here https://t.me/dcesk8 to stay current on what's going on in DCESK8. Our ride meets up at the Lincoln Memorial, near the southwest side of the Reflecting Pool and the Korean War Memorial. That is on the left side if you are looking at the Lincoln Memorial. We meetup at 6:30pm, with the ride leaving at 7:00pm.

Title: Beyond Cryptography: Geometric Symmetry & Parity Stability Summary: Decoding Chaos: Using Quantum-Inspired Symmetry Metrics to Detect Stealth Attacks in High-Stakes Infrastructure. Agenda: Why symmetry matters after the proof is done. Symmetry as an Invariant Symmetry as a Security Primitive Trust as a Continuous Function Live Thought Experiment Engineering, Implications & Open Questions Move away from traditional bit-matching and discuss "Symmetry Drift." Explain how system states can be modeled as high-dimensional manifolds where an attack represents a geometric deformation.T(t)=f(symmetry stability,parity consistency,temporal coherence) Speaker: Vijay Krishna Vijay is a security engineer focused on runtime observability and symmetry drift in cryptographic systems. He is the founder of Vyapti Resonance and the creator of the Quantum Security Probe (QSP), a telemetry-driven integrity monitoring framework for post-quantum infrastructures. His work bridges theory, engineering, and long-lived system behavior, emphasizing measurable trust over binary verification. Vijay has 9 accredited licenses in Quantum Computing. Career Snapshot: Microsoft → DuPont → Rockefeller Capital Management → Morgan Stanley → New York Life → Founder, Vyapti Resonance Across this trajectory, Vijay has operated at the core infrastructure layer of organizations—cloud platforms, identity systems, distributed compute, reliability engineering, and governance frameworks. His work has consistently involved systems that cannot fail, particularly in regulated financial and insurance environments. This enterprise grounding strongly informs his academic and research outlook: quantum and AI systems must be operable, governable, auditable, and teachable, not merely theoretically elegant.

[https://www.novaparks.com/parks/meadowlark-botanical-gardens](https://www.novaparks.com/parks/meadowlark-botanical-gardens) **Regular Garden admission and memberships apply.** Ages 5 & under Free Age 6 - 17 $5.00 Age 18 - 59 $9.00 Age 60 and over $5.00 **We will meet at the visitor center.** **Bring Water, a tripod, comfortable shoes, fully charged batteries, and empty cards** **There is no specific route in this park. Folks are free to wander around the trails in the park at their own pace.** **Check out Rob Trek's video from May 16, 2021: [https://youtu.be/QwNR_TuxM4Y](https://youtu.be/QwNR_TuxM4Y)** **For lunch, after the field trip around 12:00 PM, we will head to The Virginian Restaurant, 169 Glyndon St SE, Vienna, VA 22180** Share only your very best, most interesting shots after the field trip, and keep it down to between 5 and 10 photos. Beauty, conservation, education, and discovery flourish throughout the year at this 95-acre complex of large ornamental display gardens and unique native plant collections. Walking trails, lakes, more than twenty varieties of cherry trees, irises, peonies, an extensive shade garden, native wildflowers, gazebos, birds, butterflies, seasonal blooms, and foliage create a sanctuary of beauty and nature. [https://www.nvrpa.org/park/meadowlark_botanical_gardens/](https://www.nvrpa.org/park/meadowlark_botanical_gardens/) By sending in an RSVP and joining this meetup event hosted by the Virginia Beltway Photography Meetup, I am also agreeing to the terms of the following release and waiver of liability, which shall be binding on my heirs, executors, administrators, successors, and assigns. In consideration of my (and my child’s) participation in the Virginia Beltway Photography Meetup, I do hereby release, discharge, and hold harmless the Organizer, its members, officers, directors, employees, and the leader(s) of this event from any and all liability by reason of any damage, loss, expenses, or injury arising from my (and my child’s) participation in this event, including that caused solely or in part by the fault of any and all of the above-named parties.

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.

HANDS-ON (Bring your notebook or laptop computer...) Have you ever taken a workshop and asked yourself why your images didn't look like the instructors or your images just don't have the polish that other photographers have? "FINISHING" YOUR IMAGES IS A KEY TO PROFESSIONAL PHOTOGRAPHY SUCCESS! If you have taken any of our NVPPA workshops, PPA Super 1 Days, other 3rd party workshops, or held your own client sessions, this is the chance to get the knowledge on exactly what to edit to strategically take your images to the next level. Competition judges will notice these flaws first! The techniques applied are targeted to make your images way better -- FAST! You will LEARN HOW TO improve your portrait and lifestyle people photography by applying strategic edits to one or more images in Lightroom accompanied by some Photoshop (when necessary). These Lightroom techniques and unique application of these tools are seldom used but fast and effective. The students will be able to follow along with the edits using the same image as the instructor. A follow-along outline and practice files are provided. The Lightroom portion focuses on- and demonstrates the specific use of the basic and ADVANCED tools of the Develop Module; it's assumed you have some knowledge already of the Library Module, rating images, and organizing your images into Collections. PLEASE COME TO THIS WORKSHOP WITH YOUR SELECTED IMAGES FOR CRITIQUE OR EDITING ORGANIZED INTO COLLECTIONS AND READY-TO-VIEW! This will save us valuable time :-). HERE ARE JUST SOME OF THE TECHNIQUES YOU WILL LEARN: • Lighten & Resolve Shadowy Eye Sockets With Just a Click (No Brush)! • Add More Depth & Dimension to Your images! • Correct Bad Skin-tone & White Balance • Learn 5 Ways To Resolve Glare Or Highlights On Face, Cheek, Hands, or Shoulders (Lr And Ps) • Correct Catch Light Problems: Quickly Add a Missing Catch Light in an Eye W/O Ps and Only 2 Clicks! • Change Light Direction From Broad to Short • Identify & Correct Blocked Up Blacks. Why is this Bad? • Identify & Improve Bad Composition • Improve Focus or Sharpness: Quickly Understand the Sliders and Identify What Each Controls • Reveal & Correct Overexposed Highlights • Remove Stray Hair (Ps, Studio Example) ONE-ON-ONE INSTRUCTION! For the final portion, we will answer specific questions about your own images. Due to the small class size, you will receive individual and specific instruction! QUESTIONS: We will be glad to help with any questions. Please contact the instructor and host of this workshop by clicking on Philip's profile image above. You can also email workshops@gallery252.com (no spam please). TO REGISTER: 1. Please RSVP to the right or message/Contact Philip Brasch via his profile in the right sidebar to express your interest. You will not be able to RSVP with the button in the upper right sidebar if you are not a member in this group. 2. Either way, PLEASE complete this short and secure (https) Registration and Contact Information FORM (https://goo.gl/forms/HFsiT6bL9Ntx4nfx2) <== Click this to register for this course! We will not share this information to other parties. Or click or paste this URL into your browser: https://goo.gl/forms/HFsiT6bL9Ntx4nfx2 . *** RSVP NOW! *** INVESTMENT: There is an investment for this professional photography workshop of $89. NVPPA Gold Members (paid) receive a $10 discount. Contact Philip for the discounted link. • FIRST, please RSVP on this site so we can meet you and know you're attending. • SECOND, classes are purposely kept small so we need a commitment to hold your spot beyond 24 hours; please remit your investment here via PayPal for $89: https://tinyurl.com/yxsvw5rd • Onsite registration or after Wednesday 11:59pm the day prior to the workshop: $109 https://tinyurl.com/y4y8lzf5 ---------------------------------------------------------------------------

**Cost:** Free (If you enjoy the free class and would like to donate to the coach, you can do so here via **Venmo,** **@mpineyro26)** **What to bring:** Please bring a ball with your name on it and drinking water. Please be ready to learn and to have fun with people in the area. Are you new to sports, want to learn a new sport, or want to improve in volleyball? Here is your chance! Volleyball is a growing sport here in the DMV. The host will teach you basic volleyball skills that will allow you to get better at or learn a new sport. The host will take you through a 6-week program that will make you feel better about how you play and your volleyball confidence. **\*New Group Chat:** Because of the amount of crypto scammers out there, only people who ask to be added in front of me will be added. [https://chat.whatsapp.com/FhLXZY2kvjRBC8mSsXW8Ms](https://chat.whatsapp.com/FhLXZY2kvjRBC8mSsXW8Ms) **\*Our YouTube Channel:** [https://www.youtube.com/@mp02626](https://www.youtube.com/@mp02626) **Game Plan:** Week 1: Underhand Serve, Basics, Rules, and Defensive Positions **Week 2: Platform, Receive/Passing (1), Receive/Com (6)** Week 3: Serving overhand, Set, Set, Set Week 4: Spiking/Blocking/Testing Day! Week 5: Beginners Tournament Week 6: Trip to VA Beach to play Beach Volleyball * The plan is to do *drills for 60 minutes* and *60 minutes of playing* to apply what we've learned. * *If you missed week 1*, let the host know so he can give you a quick tutorial on the basic rules. **Important Videos:** Week 1 [101 Basics](https://www.youtube.com/watch?v=33sWyhjhacM) [Volleyball Rules:](https://www.youtube.com/watch?v=FzO7EvB7mDE) [Base Defence (positions)](https://youtu.be/IGfj8k9QjwI) *** Week 2 [Receive/Pass](https://www.youtube.com/watch?v=gOgfoEGUDCA) *** Week 3 [Overhand Serve](https://www.youtube.com/watch?v=au3QYrvsy9k) [Setting](https://www.youtube.com/watch?v=h5mpBCRK_yk) [Setting](https://www.youtube.com/watch?v=VH0LiQH5D5U) [Spin Set](https://youtu.be/04CgNspFFxQ?si=KqilChLYjy5LA_WQ&t=24) *** Week 4 [3 Step Approach](https://youtu.be/4hTPaeJQzEs?si=9gC3ae-jIVuvsH-I&t=35) [Spiking](https://www.youtube.com/watch?v=GIdN4eYCc2A) [Blocking](https://www.youtube.com/watch?v=8CSQARq6JC8) Tests Week 5 Beginners Vball Tournament 6 Teams [Last Tournament](https://www.youtube.com/watch?v=wDRQRedCHWE) Week 6 Virginia Beach Getaway [Beach Trip](https://www.youtube.com/watch?v=OKFe3-xnGts) **FAQ:** I missed the first week, can I still attend week x? *Yes, any week is a good week to learn and practice.* I am taking another beginner's volleyball class; can I attend this one? *Yes* I am more advanced than a beginner; can I attend week x? *Yes, come and practice in whatever you are weak in.* Can I bring a friend? *Yes* Can I come even if I don't have a ball? *Yes, but we recommend a ball so you can use it while you are here, and you can practice with your ball.* Do you have a ball pump for the ball? *I do*

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.

Let's bedazzle some books while we discuss our April pick: Bloodguard by Cecy Robson! Book description: One hundred years. Tens of thousands of gladiators. And today, only one will rise… Everything in the Kingdom of Arrow is a lie. Leith of Grey thought coming to this new land and volunteering to fight in the gladiator arena—vicious, bloodthirsty tournaments where only the strongest survive—would earn him enough gold to save his dying sister. He thought there was nothing left to lose. He was wrong—and they took everything. His hope. His freedom. His very humanity. All Leith has left is his battle-scarred body, fueled by rage and hardened from years of fighting for the right to live another day. Then Leith meets Maeve, an elven royal who is everything he despises. Everything he should hate. Until the alluring princess offers him the one thing he needs most: a chance to win the coveted title of Bloodguard—and his freedom. But in a kingdom built on secrets and lies, hope doesn’t come cheap. Nor will his ultimate revenge… Event: Please bring your own book, journal, bookmarks, etc to bedazzle. If you have bedazzling supplies, please bring them as well. I will supply gems, glue, and picker tools, but if you have certain colors in mind, you may want to bring your own.

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).

NFT's are here to stay folks! This is a group for like minded people interested in understanding, leveraging, using, creating for, profiting from, trading too i suppose, NFT's.. everything around them, complexity, fear and exploits, best practices and more. **PLUS** This group will talk AI ART tools, techniques, artists, video, audio, prototypes and more in the AI assisted production space- ART specifically, but we can get into any aspect of some of the cooler things happening in AI in general.

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

**The Data-Driven Brand: Using Analytics to Shape Perception** Can you use analytics to improve tacos? This being CBUSDAW, we think the answer is probably “yes”, but we’re not sure how to implement or test this theory. For our April meetup we’ve got Sara Kear, CMO of Condado Tacos, to investigate this delicious question. Sara will explore how she blends quantitative data and qualitative customer feedback to shape brand positioning and drive business decisions. We all know that marketing and analytics go way beyond attribution. Sara will show how Condado uses customer insights to inform product and pricing strategy. She’ll also highlight how Condado leverages customer feedback at scale to influence operational priorities, positioning marketing as the voice of the customer across the organization. In the last 12 years Condado has gone from one location in Columbus to 52 locations across 10 states, so we’re guessing there’s more to that growth than really good guac (though the guac probably helps). Ultimately, this talk focuses on the intersection of art and science—using data to inform creativity and build a brand that resonates with customers in a measurable way. **About Our Speaker** Sara Kear is Chief Marketing Officer at Condado Tacos, where she oversees brand, restaurant design, menu and pricing strategy, off-premise including catering, and customer data strategy. Since joining in 2021, she has helped grow the brand from 19 to 52 locations while building a data-driven marketing organization focused on loyalty and customer insights. Condado has since been named to the Inc. 5000, recognized as Breakout Retailer by Chain Store Age, and consistently ranked among FastCasual’s Top 100 Movers & Shakers. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)