Hacking

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.

We will start at the Four Mile Run Trail Parking Area in Bluemont Park, follow the Four Mile Run Trail to Columbia Pike, then return and take the Lubber Run Trail to complete a 6-mile loop Exact location to meet https://maps.app.goo.gl/icy7jbdbefNzNvQX8 Cost: Free Walking speed: 2.5 -3 mph Note: We start on time, so please arrive early or on time to join the group Dinner: At the end of the walk, we’ll take a vote for dinner. If more than 5 people choose to join, we’ll go to dinner, otherwise, we’ll skip dinner

• What we'll do Economist William Michael Cunningham on Podbeam Thursdays at 6 pm. https://www.podbean.com/

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 for an South African Wine Tasting night! Six different types of wines will be featured. This is a wine tasting night, where we pour six types of delicious wines for hours, we get educated on the wines by the top notch experts from the industry. On top of that, we socialize and mingle with many like minded wine lovers through out the evening. http://photos1.meetupstatic.com/photos/event/7/a/6/3/event_431371331.jpeg Payment Instructions : 1. You should login from a PC to see the '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. http://photos1.meetupstatic.com/photos/event/1/5/a/e/600_441545550.jpeg Refund & Ticket Resell : 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 us (organizers) a message 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.

Let's get together to play some fun BB level Double games at Bluemont. **Format**: 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) 1. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco) 1. [Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/)

Hey Poetry Lovers! This group is on a roll. Here’s the gist: We meet at the **Capital One Café in Chinatown** from **12pm - 2pm** every other week. For enrichment, we start by reading and reflecting on a **“published poem”**, suggested by someone in the group. No advance preparation is necessary. But feel free to check out some of the poems we’ve read [here](https://docs.google.com/spreadsheets/d/e/2PACX-1vSyE_wCLQCPHRrKmN5F9tOIeeRQUZESxjRXGVBoCF2uU8Gm0_d0uECiCBCQXEy6ksxfsBOhtRIOpW3T/pubhtml?gid=0&single=true&widget=true&headers=false%22%3E%3C/iframe%3E). Or submit suggestions for future meetings [here](https://docs.google.com/forms/d/e/1FAIpQLSexGc2Z2Kp6bZW0D3_hfJ7NUUkfNHf7TXX-43FglCeBd9EF2Q/viewform?usp=send_form). Next, we **share our work and offer feedback**. Depending on attendance, everyone gets \~10 minutes to use as they like. (No need to share, though; you’re welcome to come even if you prefer just to listen.) We maintain a **Discord server** to help share our work and communicate outside our bi-weekly meet-ups. If you haven’t used Discord before, take a moment to download it and create an account before arriving. When we meet you on Saturday, we will add you to our server, the “DC Poetry Workshop”, and can help you navigate the app if you have questions. Finally, if you plan on sharing a poem, consider how you will do so. Some options include: * Print 5-10 copies to distribute in person * Take and share screenshots in the Discord chat. * Copy the poem into a google doc, change sharing settings to “anyone with link”, and copy the google doc link into the Discord chat. Most importantly, we’re excited to meet you! Catch you on Saturday, Diego / Ian / Cayden / Nate / Otasha / Lia / An

**IMPORTANT -** If you are not 100% committed please do ***not RSVP.*** No shows will be de-propritized for future events. We got rained out on Memorial day - so let's try this again on July 4th weekend! The Mount Rogers/Grayson Highlands loop hike is an iconic section of the Appalachian Trail, located in the southwestern hills of Virginia within the Jefferson National Forest. This region is best known for its vast mountain views and alpine peaks with **wild ponies** roaming about. This area is also home to Virginia's highest point, Mount Rogers, sitting at 5,729'. This is a premier east-coast backpacking destination, so don't miss this one. ## **Trail Facts** * **Difficulty Level:** Moderate * **Length:** 21.4 Miles * **Duration:** 3 Days * **Elevation Gain:** 3,898 Feet * **Bear Canisters:** Not Required * **Permits:** None * **Dogs**: Allowed * **Meetup/Carpool:** Vienna Metro South * **Trailhead Parking:** 36.6893579, -81.5320954 * **AllTrails Map**: https://www.alltrails.com/explore/map/mount-rogers-and-appalachian-trail-loop-958adb5?u=i&sh=rak641 **Trail Details:** We will meet at The Vienna Metro station on Friday morning at 8am and drive to the Mt Rogers Trailhead (off Rt 603). This parking lot is **NOT** the paid lot near Masie Gap, and so can fill up. I'd like to try to get there as early as possible. The drive is about 5 hours. I will drive and am happy to have others carpool with me - but please note, I will have my small black labrador in the back seat. **Day 1** After we park, we will hike about 7 miles to our campsite, diverting once to summit Mt Rogers. There arent any views here, but it's worth the .3 miles to say you've been to the highest point in VA! We will camp on the first night at the scenic tent sites near the Thomas Knob Shelter on the AT. There is water at this site and we may see wild ponies if we're lucky. **Day 2** The second day is about 10.7 miles, which includes spectacular views, unique rock formations and wide open grassy meadows. We will camp near the Old Orchard Shelter. There is a spring with water at this site as well. **Day 3** The third day will be a short 3.5 mile hike from camp back to the cars. Getting to the cars early will mean that we should get back to DC around 4-5pm. On the drive home, I plan to stop at Martin's in downtown Roanoke (413 1st St SW, Roanoke, VA 24011). **Essential Items**: * Tent * Sleeping pad​ * Sleeping bag suitable for expected temperatures​ * Backpack (appropriate for overnight backpacking)​ * Backpacking stove with fuel​ * Pot, cup, dish, and utensils​ * Dehydrated meals​ and snacks * Water bottles or hydration system (capacity for at least 2 liters)​ * Water filter or purification tablets​ * Headlamp with extra batteries​ * Rain gear * Dry bags or pack cover​ * Warm clothing layers (non-cotton) * Trowel for and toiletries for Leave-No-Trace compliance **Optional Items**: * Personal first aid kit​ * Map and compass or GPS device * Power bank or external battery * Trekking poles​ * Camp shoes * Electrolyte supplements​ * Alcohol​ * Books, games, or other enterainment * Gaiters​ * Sunscreen, lip balm, insect repellent​​ **CARPOOL:** Don't forget if you want a ride or are willing to offer a ride – be a friend to the environment, save money, and make friends. **LIABILITY NOTICE:** Please remember that this group operates under the common adventurer model. We are a group of friends and volunteers organizing trips for fun and shared experience. Participants are expected to be familiar with best hiking practices and choose hikes that align with their physical abilities and experience. Organizers and members are not liable for any injuries, loss, or damage to persons or property arising from group activities. By attending this event, you agree to assume all risks associated with the activity.​ For more information on the common adventurer model, please see [Ron Watters' definition](https://www.ronwatters.com/CADefine.htm).​ If you believe you may be lost during the hike, follow the advice of the [US Forest Service](https://www.fs.usda.gov/visit/know-before-you-go/if-you-get-lost). ​ See you on the trail!

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!

Guys, we need to do this slow. Mishki gets overheated, so we take breaks from time to time, plus there may be other folks who walk slow. To make everyone feel included in the group experience, we walk slow, we wait and are kind. **Meeting Spot**: We gather at the main parking lot close to the park entrance, under the trees. **Lake Artemesia Walk – College Park** Join us for a relaxed, easy-paced walk around beautiful Lake Artemesia. A chance to unwind, enjoy nature, and connect with others in a calm, welcoming setting. We’ll walk the scenic loop, take in the lake views, and enjoy light conversation along the way. All fitness levels are welcome. **Main parking lot: 55th Ave & Berwyn Rd,** College Park, MD 20740 Bring plenty of water, whatever you need for your hike, and your awesome authentic self. Keep it easygoing. RELEASE OF LIABILITY & ASSUMPTION OF RISK AGREEMENT: By being a member of this Group, RSVPing to any Activity, or participating in any Activity, You accept and agree to the terms and conditions described below: 1. You acknowledge that hiking in nature carries the risk of potential harm to yourself, including the risk of injuries such as broken bones or muscle/tendon injuries, illness, disability, or death. 2. You agree that You will at all times be responsible for Yourself and Your own safety. 3. You release and hold harmless with respect to all injury, disability, death, or loss of property, whether caused by negligence or otherwise, this group's leadership and members for the hikes that you participate in. 4. You acknowledge and agree that this Group is merely a collection of friends or potential friends who enjoy doing activities, and that in no event does any Organizer or Other Member assume any responsibility or liability for You. 5\. You agree not to sue and to release\, discharge\, waive and hold harmless all organizers and other members from and against all liabilities\, claims\, demands\, losses\, damages\, suits and proceedings\, for negligence\, carelessness or any other cause which you may have or that hereafter may accrue arising\, resulting from or related to your membership in this group or participation in any activity\.

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

🇺🇸 Red, White & BOOM: A Black Love Summer Social ❤️ Skip the downtown chaos and celebrate with great people instead! Join Black Love & Friends as we spend the evening together in the beautiful, historic King-Lincoln District, just steps from Mayme Moore Park, with an incredible view of the Red, White & BOOM fireworks. This isn't a formal event—it's a relaxed summer gathering. Come early or stop by later. Stay for an hour or stay all evening. We'll have our own private meetup space where you can kick back, meet new people, play a few games, enjoy light refreshments, and simply enjoy the holiday together. Throughout the evening we'll explore the King-Lincoln District, soak up the atmosphere, laugh, connect, and then settle in as the Columbus skyline lights up with one of the biggest fireworks shows of the year. ✨ What to expect: 🎆 Great views of the Red, White & BOOM fireworks 🏙️ Historic King-Lincoln District ⛺ Private Black Love & Friends meetup tent 🎲 Lawn games & conversation 🥤 Light refreshments 🤝 New friends & great vibes 📸 Perfect summer photo opportunities Event begins: 6:30 PM Fireworks begin later in the evening, so arrive whenever works for you. Feel free to come and go throughout the night. ⚠️ RSVP is required. Space at our tent is limited, so we'll only be able to accommodate those who register in advance. Bring a chair if you'd like, wear your favorite red, white, and blue, and come celebrate community, connection, and summer with Black Love & Friends. Good people. Great conversations. Amazing fireworks.

Private Group. Closed to the Public Knowing ourselves and understanding our abilities is the first step toward wielding our gifts with control and accuracy. In subsequent classes we will verify and hone our talents with activities and discussion. These are hands-on workshops and participation is expected. The goal of our series will be to develop expertise in areas of particular interest such as mediumship, channeling, divination, healing and, etc.. Our ultimate directions will be determined by class members as we evolve. I look forward to sharing and discovering with you. - Cynthia

**Hello Columbus!** **The community is buzzing and growing well. We are thrilled to bring our fourth BrowserStack QA Meetup on Thursday, July 9th!** We are creating a space for deeper insights, meaningful connections, and a vibe you won't want to miss. **What to expect:** * **Connect:** Network with Columbus' top engineering and QA minds. * **Learn:** Real-world tactics and trends you can use immediately. * **Enjoy:** Food, drinks, and great community spirit. **Agenda** * **Two Roads Diverged in a Wood: Docker Compose vs. Kubernetes** by **[Doug Reeder](https://www.linkedin.com/in/pdouglasreeder/)** **RSVP Essential:** Space is limited, and we want to ensure a great experience for everyone. **RSVP now to secure your spot!** 📍 **Venue:** Leading EDJE, 6515 Longshore Loop, Suite 300, Dublin, OH 43017 📍 **Free Parking:** 6725 Longshore Street, Dublin, OH 43017 📅 **Date & Time:** July 9, 6:00 PM **Stay Connected!** Want to continue the conversation beyond the meetup? Join our **BrowserStack Discord Server** to get updates, connect with fellow QA professionals, and be part of an ongoing discussion. **Don’t miss out—click below to join!** 🔗 [\[](https://discord.gg/6SdCyWTNyW)**[Join the BrowserStack Discord Server](https://discord.gg/6SdCyWTNyW)**[\]](https://discord.gg/6SdCyWTNyW) **A Few Notes:** ✅ This is an **in-person event** ✅ **RSVP does not guarantee a seat** – A confirmation email will be sent one day before the event. **TALK ABSTRACT:** Docker Compose and Kubernetes are two of the most popular tools for running containerized applications. Their feature lists are similar. Architects and senior developers need to know how their different paradigms lead to unexpectedly different experiences in production.

Most people use LLMs by feel: ask a question, read the answer, decide whether it “seems good,” and move on. That works for casual use. It does not work when you are building software, automating workflows, writing important documents, or relying on AI for anything that needs to be repeatable. In this talk, we’ll look at how to improve and evaluate the inputs and outputs of LLMs using practical measurement techniques. We’ll cover how prompt changes affect results, how to compare outputs, how to build simple evaluation sets, and how math-based methods like similarity scoring can help you move beyond guesswork. This will be beginner-friendly, so even if you don't know anything about AI, you should get something out of it. However, this will be a little more technical than our intro talks. You do not need to be an AI researcher, but programmers and technically curious attendees will get a lot out of it. We’ll cover: * Why “it looks good” is not enough * How to improve prompts by changing the input, context, and constraints * How to compare LLM outputs more systematically * Basic evaluation techniques for accuracy, consistency, and usefulness * How embeddings, cosine similarity, and scoring can help evaluate results * Where automated evaluation works — and where humans still need to stay in the loop By the end, you’ll have a practical mental model for treating LLMs less like magic and more like systems you can test, measure, and improve. LOGISTICS AND PARKING: The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks! The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.

Do you feel introverted when you are in a group setting? Are you shy? Do other people have more fun than you do? There are simple life hacks you can use to improve your connection to others and improve your social life. Talking is one thing. Truly connecting is altogether another. It's the whole experience of connecting with people and forming relationships. It includes the joy, understanding, and love formed among people. * In our meetings, you will learn: * A simple life hack to increase your liking and tolerance of other people, or even of yourself! * How to become more interested and enjoy conversations with people. * How to be comfortable in social settings. * How to be yourself * How to become more extroverted and, * How to make connections with people. Feeling lonely, isolated, or bored? This local meeting is exactly what you need! Come join us! Be sure to click on the red "Attend" button below to come to the local event. We look forward to seeing you there. This group is created by the Dianetics and Scientology life improvement center.

Highlights and Hidden Gems in SQL Server 2025 With so much emphasis on cloud data platforms and AI these days, SQL people can feel left behind by all the marketing hype. SQL Server 2025 was officially released in November of 2025, though, and contains a ton of improvements that will make our SQL Server deployments a bit faster, better, and more secure. There are even more improvements tucked into the release that never made a marketing blog or press release that you'll likely be learning about for the first time in this session! Join this session to learn about what makes your high availability a little more available, your performance a bit more performant, and your database more developer and app-friendly. Come spend an hour with SQL people talking SQL Server 2025 – the good, the "not quite ready for prime time", and the hidden awesomeness.