If you missed our first Robot Combat event back in November, don't worry, there's still time to get in on February's event!
The hardware development community at hackaday.io put together a challenge to build something awesome in less than 1Kb, so we decided to join the fun. Here's our entry.
despite all of your friends who like to say that "heat goes up", heat actual moves according to this equation,
If you're wondering what on earth that means, you have two options: study differential equations for a few years or watch the colors change on our LED board. This LED board displays our solution to the 2D heat equation, written in less than 1Kb of program space, which we've entered in Hackaday's 1Kb Challenge. If you were to heat up a 14.5x10.9 inch sheet of copper, the heat would move through it exactly as our board displays. The same temperatures would be at the same locations at the same time. Don't believe it? Grab your thermocouple and follow the details over at Hackaday.
Give the gift of making! This holiday season, gift your loved ones with access to the tools, materials and community to create anything they can dream up.
Vector Space membership (age 18+) includes access to the computer and electronics lab, textile room, wood and metal shops, 3D printer, lounge, and classroom area. Members recieve tool safety training and an RFID tag to grant entry to the workshop 24/7. Project storage space and basic materials are included (plywood, sheet metal, resistors, printer filament, etc.). Throughout December, you can purchase a three month membership for just \$50/month - a \$30 discount!
Gift memberships are actived once the recipient signs up, and can be used any time. Questions? Find us at info [at] vector-space [dot] org.
Workshop passes are for ages 12+ to participate in any of our available workshops. Tools and materials are always included, and everyone leaves with something they've made! For a limited time you can purchase 5 workshop passes for just $150 - a $25 discount! Sewing, 3D printing, bookbinding, electronics (Raspberry Pi and Arduino), leather working, metal and woodworking (lathe training) are workshops that will be available in 2017. For a current workshop schedule, visit: http://vector-space.org/projects
This Saturday's drag races were the second set of races in the Nitro RC series. In the week leading up, students were scrambling to get their cars together in time. Axles were rethreaded, wires re-soldered, a clever fix for a pull start that didn't quite fit, and a significant amount of carburetor tuning, ensuring each team would have just the right mixture of air and fuel.
The race they were preparing for was a 50 yard drag race. On race day, just an hour before the start time, Team Turbo finished assembling their car only to find that their steering mechanism wasn't working. They tried a few simple fixes before realizing they had over-tightened the hub carrier when installing new axles on the front wheels. This caused too much resistance on the balls that allow the wheels to pivot, so they quickly went back to work tearing off the front wheels to make the fix. At this point, the other teams had made their way to the track to start warming up.
JJ Racing was coming off a win and had picked up a sponsorship from Pipette Repair Service the previous week, so they were considered the favorite. They replaced all of their suspension springs to get a stiffer ride for this race, and their warm up laps were looking good. Purple Power had spent more time than any other team tweaking their carburetor, and it showed. They were doing wheelies just to intimidate the competition. Meanwhile, team Doubtful Confidence left their car unstarted before the race; partly as their own form of intimidation, but mostly for fear of breaking their rather delicate pull start.
The first race put JJ Racing against Doubtful Confidence. Once Doubtful Confidence started up their engine, you could see the fear in the other racers' eyes. The green flag waved and they came roaring off the start leaving JJ Racing far behind. It was clear that while JJ Racing had their car in a very reliable configuration, they'd need to get a little riskier if they wanted to win. Next up, Team Turbo went up against Purple Power. Purple Power took off while Team Turbo remained at the start line, engine screaming as the drive shaft had become disconnected from the transmission. Purple Power took the win, but not without losing a wheel.
The races continued, working through the double elimination bracket. As the pressure of the competition built, last minute solutions to problems began to get creative. Team Turbo tried a few tricks to keep their drive shaft engaged, but without time to resize the shaft like they needed to the best they could do was wrap the coupling in duct tape. It was a noble effort, but unfortunately didn't do the trick. Meanwhile, Purple Power knew the lost wheel was going to be trouble, as it was much worse than just a loose nut. They ran back to Vector Space to super glue the wheel and axle, only to find that it simply didn't have the strength. They were given the five minute warning when in desperation they caught sight of some trash in the parking lot, a water bottle to be specific. Jason ran over to grab it and began duct taping the bottle on in place of the missing wheel. "It'll act like a ski", he said. Everyone laughed, and then the green flag waved for the race against their powerful opponent Doubtful Confidence.
We were surprised how quickly Purple Power came off the start. The water bottle broke a leak but the car seemed to only get faster. I stood alone at the finish line, not expecting much of a race until I had to jump out of the way of what was the fastest ski car I've ever seen. The finish was unbelievably close. I couldn't tell who won, but among the commotion everyone seemed to think it was Doubtful Confidence, not our water bottle underdogs. Fortunately we had a camera on the finish line, so I ran it back to Vector Space to upload the footage. I had to slow it down frame by frame until it was clear, before emailing the image to Jordan, and running back to the race track. On my way I heard a unified burst of astonishment as Jordan showed them the photo of Purple Power taking the win. From that moment on, Purple Power took on a new name: Team Water Bottle.
Doubtful Confidence ended up coming back from the loser's bracket, defeating Team Water Bottle twice to take the win. As usual, it was an exciting day for Nitro RC racing.
Thanks to our sponsors for supporting these teams.
A few months ago, Jordan and I decided to build a chalk drawing robot. Our plan was to enter the Amazement Square 2016 Chalk Festival, draw an exact replica of the Mona Lisa, and walk away with the gold. We built Chalkbot over the course of three nights. Jordan focused on the electronics, wiring the stepper motors and programming the Arduino with a gcode interpreter, while I built the gantry and other mechanical aspects. Justin was there to lend some help in both realms.
We were pleased with Chalkbot's artistic talent . It wasn't drawing the Mona Lisa, but it made a pretty cool looking wolf. So full of confidence, thinking about how we would spend our winnings, we took Chalkbot to the Festival and unleashed his talent. In less than five minutes, it was clear that Chalkbot was the worst artist in sight. Embarrassingly, we had only ever tested him inside, on a smooth surface. So when it came time to draw on rough, uneven asphalt in the 95 degree summer heat, we'll just say that many things went wrong.
Not to be deterred, we vowed to rebuild Chalkbot, and this past Saturday began our endeavor to do so. We held our first member build, which involved nine Vector Space members, fueled by caffeine and bagels, working diligently on a CNC build from Thingiverse . They divided the work: cutting conduit, assembling various parts, building circuitry and programming the motor controller. The plan was to work on it for three hours, but they couldn't tear themselves away. At the end of the day, they had built the workings of a significantly improved CNC.
And while the members of Vector Space plan to use it as a CNC router, using it to make Christmas trees, airplanes, signs, 3D puzzles, and all sorts of other bizarre ideas, Jordan and I intend to attach a piece of chalk to it and defeat all humans at Chalk Fest 2017.
Meet Trey, Terrell, and Christian (from left to right) of Team Turbo. They had last pick of the four nitro cars, which came with a few challenges. It was clear at the start that the front wheel assembly was completely broken and most of the screws stripped. It wasn't until the teardown began that they got a better feel for how much work needed to be done. It turns out that screw extraction is an art that we've yet to master. But with enough broken drill bits, they managed to get the job done.
Given that the first race was only a week away, Team Turbo knew they wouldn't be able to get new parts in time. So they made due with what they had. The broken bulkhead received a generous helping of epoxy, the stripped screws were replaced, and the transmission ignored. The skid plate that protects the underside of many important components was in equally rough condition. Once they had the engine out, and the suspension off, they could more clearly see the transmission, which unfortunately revealed that they didn't have drive shafts to the front wheels, meaning they were the only team without four wheel drive.
Fortunately, our friends at AMG know that these are minor issues that can be fixed, so they were happy to sponsor Team Turbo. Which means that the drive shafts, front differential, and replacement skid plates are on the way.
Team Turbo was the first team to reassemble their car, which gave them some time to practice before the first race. Wish them luck!
Check out the current standings to see how they did.
This fall we have two high powered and high energy projects going on at Vector Space. As is tradition, we're building and launching something into the air. And- new this time around- we are [hopefully] keeping our Nitro RC Cars on the ground.
We have nine rocketeers in grades 7-12 participating in the Team America Rocketry Challenge (TARC), a national rocketry competition. Students are split into two teams, and each team is designing and building a rocket using OpenRocket software and 3D printed, hand-made and ordered parts. Teams will each launch 25-40 times, attempting to get as close as possible to the target altitude (775 feet) and time constraints (42 seconds) put forth by the competition, all while safely launching and delivering a raw hen egg back to the ground.
Four teams of two have spent the first week of this project completely dismantling their cars. Broken parts will be fixed or replaced, all parts will be cleaned and then reassembly will commence. Each week of the eight week project teams will pit their cars against the others in a race. Races will vary each week: cars will be adjusted to adapt from a street course to off-road conditions, with some tug-of-war and obstacles thrown in the mix as well. With each change in course, students will learn more about how their cars work as they make adjustments to how they drive in order to beat the competition.