Coding Champs!

The following article appeared in the Santa Barbara News-Press on the 7th of January, written by Christian Whittle.

When Freshman Ruby Kilpper and sophomore Sydney Whited of the Providence School high school set out to develop an app for the Congressional App Challenge, they had a lot of ideas and not much time to choose one.

“We kept narrowing it down based on our skill level, what we thought we could do, and how much time we had,” said Sydney.

Eventually the two settled on Santa Barbara Volunteer Opportunities, a way for high schoolers to find volunteer opportunities in the area. And after a month of dedication their hard work paid off, winning the app challenge in Rep. Salud Carbajal’s 24th Congressional District.

Ruby and Sydney received the Congressional App Challenge award from Mr. Carbajal on Monday.

The annual coding competition for students was created to increase congressional awareness of computer science and STEM fields (science, technology, engineering and math).

Mr. Carbajal brought the two students to his Santa Barbara district office to honor their achievements and invite them to a reception at the House of Representatives in Washington, D.C.

“It’s a great opportunity to provide to our constituents and our young people, and it’s really cool to have young people from your district represented in Washington. We’re all very proud of you,” said Mr. Carbajal, D-Santa Barbara.

The pair are students in the Providence Engineering Academy. Launched in 2015, the academy, led by Rodney Meadth, serves as a springboard for students considering a career in math, science, or engineering disciplines. Participants enroll in specific classes from ninth through 12th grades.

Santa Barbara High School students won the challenge last year, but Providence stepped up the competition in 2019 by submitting eight projects.

“We’ve never gotten so many projects submitted from one school in particular, so obviously your teacher and your school had a lot to do with it and it just makes me feel really good about our future, the fact that you have a local school who’s really promoting coding,” Mr. Carbajal told the students.

The app Ruby and Sydney created for the competition, the Santa Barbara Volunteer Opportunities app, allows local nonprofits to post opportunities to serve, with details about age and time requirements, location, and the work needed from volunteers.

Users can use the app when they are interested in finding somewhere to serve. The pair wrote the app’s script in Java with 500 lines of code, and designed it mainly for use by high school students.

Sydney and Ruby were inspired to make the app by Providence’s annual day of service, in which students volunteer around the city, as well as Sydney’s experience volunteering with her mother for the Santa Barbara chapter of the National Charity League.

“I think it’s a great requirement to go out and serve your community, but sometimes it can be difficult to find opportunities to serve,” Ruby said.

The pair wanted to create a platform where students can reach out to organizations on their own to find different opportunities that work for their schedule and interests.

“We wanted to create an app that made the process easier and overall better for our community,” said Ruby.

“This was very innovative,” said Mr. Carbajal. “My staff and I, we went through them all, and yours was clearly at the top early on because it’s just so practical, and it’s so user friendly.”

Although they had some experience coding, it was the first time either of them had worked with Java. Sydney had tried coding in middle school and didn’t take to it, but this time around she and Ruby had a lot of fun. Both have been inspired to continue learning about coding as they think about college and the future.

With the limited time to come up with a concept and develop the app, Sydney and Ruby weren’t able to fit in every feature they wanted, like a search bar and map. Nevertheless, they’re proud of what they were able to accomplish.

The SBVO app is still in the development and testing stage and is not yet available for download, but Ruby and Sydney are considering finishing the project despite the Challenge having ended.

Established in 2015, the Congressional App Challenge is considered to be the most prestigious prize in student computer science, according to the CAC website.

Members of the House of Representatives host contests in their districts for middle and high school students, encouraging them to learn to code and inspiring them to pursue careers in computer science.

Participating House members each select a winning app from their districts, and each winning team is invited to showcase their winning app at the U.S. Capitol during the annual #HouseOfCode festival in the spring.

Since its inception, the CAC has inspired more than 14,000 students across 48 states to program an app. In 2019, 10,000 students registered for the competition, 2,177 created and submitted functioning apps, and 304 House members chose winners from their districts.

Sydney and Ruby will receive a $250 Amazon Web Service Credit. Their app and their names will be displayed on the Congressional App Challenge website. The House of Representatives reception will be the second time Sydney and Ruby have visited the Capitol, after an eighth-grade field trip to the city.

“Now you get to go back as winners!” said Mr. Carbajal.

email: cwhittle@newspress.com

Major Project: Hexacopter Drone

(The fifth in our student blog series, written by Sam in 11th Grade, is followed by the teacher's two updates on the project, so please read all the way down! Flight tests were finally successful, as students and teacher alike learned the hard realities of "going back to the drawing board!")

While we don’t plan on taking him to the sun, Icarus was the name we selected for our massive hexacopter drone. With a 31-inch diameter, and the theoretical ability to lift almost two pounds on top of its own five-pound weight, it is operating at the higher end of recreational drone constraints. Most commercially available drones today feature only four propellers, and a mass of around one pound.

Early sketches of the design, with design priorities listed on the side

When we were designing “Thiccarus” we decided to push the boundaries with the materials we had available. A hexacopter design, as opposed to a more common quadcopter (a standard recreational design with four propellers), gave us more lift power and stability with a trade off on speed and maneuverability. To reduce weight and maintain strength Thiccarus would be constructed with 3D printed body parts and carbon fiber struts connecting them. However, when we were brainstorming, we decided that our drone’s primary function would be cargo delivery (despite my suggestions to make it into a fishing drone or a laser-toting drone with a search and destroy mission).

Pedro, Nolan, and Joshua tear apart
old quadcopter drones from two years
ago--fare thee well!

We came up with our design, then our constraints and requirements. After this, we split into design teams, each headed by ”captains.” After the protective shrouds around each propeller and control center base were decided upon, we set to starting a joint Onshape project. Onshape is our 3D design platform of choice for this project. Each team member was assigned one component of Thiccarus to design, and it came together well in a collaborative fashion. Each member of the design team is able to see in real time how their part will integrate with the other parts, which is incredibly helpful.

The eight students work concurrently on the drone CAD model,
with each one instantly able to see how their component fits into
the broader scope

The hexacopter design emerges!

The largest and most difficult piece to print: the central electronics
platform; five or six attempts at printing were required

Icarus is currently in the printing stage, and when it is fully constructed, it will be mounted with two cameras feeding to a battery powered LCD screen. Steered by the controller, it will be capable of flying high and low to deliver small payloads.

(Sam's article was written in early October. After a delay in printing production due to some technical difficulties, the entire drone was finally fully assembled and taken for some early test flights. And now the update—which gets a little technical...)

After many hours of printing and assembly...

Sam, Ben, and Todd carefully attach
the motors and batteries and other
electronic components

The 8th Period engineering class proudly marched their huge drone out to the Providence soccer pitch. Gentle (and safe!) power-ups in the classroom had proved troublesome, with erratic behavior being immediately apparent. The drone was very touchy, and tended to spin around and roll to one side. Cutting the throttle from even six inches of altitude caused the aircraft to fall with a ungraceful "thump", with small 3D-printed pieces occasionally breaking off.

Alena gave an insightful suggestion that we could take it outside and stretch out a big sheet of fabric to catch the drone as it fell. This would allow us to try to gain more altitude—and more time to evaluate its behavior and get it under manual control. The soft fall into the fabric would certainly keep both drone and students completely safe! As an added bonus, we would look comically like cartoon fire-fighters.

The group heads outside to try an initial flight: safety goggles on!

And look like cartoon fire-fighters we did! The plan worked rather well, except for Ben slipping accidentally in a mud patch on the field in his zeal for saving the drone. With the extra flight altitude and time, we learned that the machine wanted to spin on its vertical axis—absolutely out of control. Where it should have lifted gingerly into the air and hovered obediently, it was a veritable whirling dervish, and the group could not even agree on their recollection of whether it had spun clockwise or counter-clockwise!

It may look like the class is flinging it into the air—we promise
it is actually flying!

In a typical situation like this, the pilot should be able to add in some "yaw" trim. This means that the controller is set to always provide a little bit extra of yaw control, intended to counteract whatever is naturally happening and make everything balance out again. But adding yaw trim in either direction just didn't change anything, and after one particularly wild spin the drone fell outside of the fabric and broke one of its 3D-printed propeller shrouds.

See that tilt to one side? About three seconds later Thiccarus
successfully escaped our circle of friendship!

Back to the drawing board...

1. It is possible that the flight controller—the 1-inch small box that houses gyroscopes and inputs and outputs and magnetometers and so on—is just misbehaving or badly calibrated. But after several recalibrations and trying an alternate one that we had in stock, there was no improvement. Check.
2. Is Thiccarus just way too "thicc"? Maybe. We could have designed more aggressively, and perhaps brought him down to 2 kg even (4.4 lb). But the specs say that each motor should be able to create up to 550 grams of thrust. With six motors in total, that's 3.3 kg of thrust available (7.3 lb). And it's definitely getting off the ground, even with the thrust output turned down for safety. So: check.
3. It is possible that one or more motors are just misbehaving or getting bad signals. Tiny, threadlike wires carry the commands between the different components, and we have run into problems of this nature before. But replacing one bad cable fixed that, and simple individual motor bench tests show snappy, responsive motors that will blow your papers away from across the room.

When all else fails, Google it. Apparently, when your drone experiences untrimmable yaw, it is likely the result of not having set all motors perfectly level. In other words, one or more propellers might not be perfectly flat relative to the ground, but tilted slightly to one side. And yes, this is quite noticeable on poor old Thiccarus once you look for it. Fortunately, it can be easily solved by readjusting the four screws that hold each motor down, and putting a little "shim" on one side to nudge it up to level.

This is actually an interesting application of standard high school trigonometry. If a thrust vector is pointing straight up to sky, well and good. This is what the flight controller is banking on for its power distribution calculations. But if a motor is tipped to one side by even two or three degrees (barely perceptible to the eye), the aircraft will experience a mysterious lateral force equal to the thrust times the sine of the angle. If the motor is generating a healthy 500 grams of thrust (a little over a pound), three degrees of tilt creates 26 grams of sideways thrust (500sin3°). Small but significant—and the flight controller is not accounting for it.

Maddening: yes. Fixable: absolutely. The motors will be checked and adjusted, and Thiccarus will be bandaged up and flown again. It is also very likely that a Mark II design will surface in the second semester, with higher tolerances for motor angles accounted for from the very beginning and a lighter airframe. Less airframe weight means longer flight times, a more responsive drone, and a greater possible payload.

Providence Engineering Academy: carry on!

(Our final update for this story on the 19th of November.  Spoiler alert: it's a happy ending!)

As promised, the motors were checked and adjusted. Ben and Mr. Meadth stayed after school and carefully placed pieces of card under this or that side of the motors to shim them up, bringing them as close as possible to vertical. Three motors were in need of adjustment, but none of them were out of line by more than about two or three degrees.

The drone was powered up, with high hopes... but the end result was exactly the same. Thiccarus wanted to flip over to the side and rotate faster and faster, and nothing could persuade him otherwise. Forget flying too close to the sun—Thiccarus couldn't even get off the ground!

And then...

And then...

Mr. Meadth had his flash of inspiration, and it all came down to this image:

The source of all problems.

This diagram shows the initial wiring and setup instructions from the flight controller. A certain teacher thought he had carefully followed the diagram; unfortunately, he had set the actual propeller directions all opposite. For example, propeller 1 was supposed to be rotating clockwise, but it had been set up to be counter-clockwise.

What's the big deal, you ask? Well, while having everything opposite would still be balanced to some degree, the flight controller uses the spinning propellers to control its yaw. Say the craft wants to yaw to the left, it chooses a propeller to spin faster to the right (like propeller 1), and Newton's Law of Reactions takes over. If it wants to yaw to the right, it might choose a left-spinning propeller to do that (like propeller 2). But since each and every one was backwards, the corrective actions it tried to take were in every case making the situation worse. If it started drifting left, it would end up spinning more left—a classic vicious circle if ever there was one.

A quick click of a checkbox in the computer and that was solved. All propellers: backwards. Oops.

Propellers... spinning the correct way!

You know you're doing something
right when you're looking at the bottom
of the drone

This portable outdoor screen receives
video input from two onboard cameras

Today marks another successful series of flights. We currently get about ten minutes of air time with two fully charged batteries. Three students plus teacher have been brave enough to fly around a little bit. No major accidents—perhaps a leg snapping off here or there with a rough landing!

Lessons learned:

1. Persistence pays off. If this is a thing that can be done, then you can do it. Just get out there and keep troubleshooting until you work it out.
2. This is a new era of high school education. To collaborate on a CAD model, 3D print it, order the electronics, and create a hovering 2.2 kg monstrosity in the space of three months is just not something a school could have done in-house ten years ago. Truly these are amazing times!
3. These students are capable. With the right leadership and direction, they know how to think and problem solve and calculate and design. They will go far.

The story ends here, but keep an eye out for Mark II! We just can't resist. There are already so many things that could be optimized (chiefly, stronger airframe and lighter weight). Lighter weight means more air time, so bring it on! Look out for Son of Thiccarus in the second semester, and until then, stay posted.

Collaboration with the Physical Education Department

(The fourth in our student blog series comes from Nolan in 11th Grade, and gives the final update on a project that was begun last year.)

Last year, the focus of the Advanced Engineering I group (juniors and seniors) of the Providence Engineering Academy was statics, or the branch of physics associated with objects at rest. As a way to explore this topic, the members of the Engineering Academy collaborated with the Providence Physical Education Department. Their goal was to create versatile wooden boxes that could function in many different ways: an obstacle course, a balance beam, or a step-up box, for example. In this way, the engineering students created a system that would not only benefit the P.E. program, but would also help them learn more about statics, since the structure would have to be able to withstand the use of the junior highers (not breaking or sliding on the grass when jumped on, while having multiple uses).

The first box shown in a virtual assembly

The second box shown translucent, interior strength wall visible

This first step of this project was to create paper models of the boxes, to see how everything would fit together. After Mr. Meadth, the director of the Engineering Academy, approved the designs, the team shifted to using an online program called Onshape. Onshape is a design tool used to create realistic models of objects. This CAD technique allowed the budding engineers to visualize their designs of the boxes further and make adjustments where needed. Once the “CADing” was complete, it was time to start producing and assembling the actual boxes.

Mr. Meadth checks the fit of the first two pieces of one box, as
students look on

The students wrestle with the heavy pieces, sliding them into place

Incorporating the “box joint” technique (resembling a three-dimensional puzzle, used for strength), the two large boxes were finally completed after lots of hard work from last year’s juniors and seniors. Each box comprised approximately nine pieces, weighed about 120 pounds, and had volumes of 80 and 48 cubic feet, respectively. Another fun touch added to these boxes was a grid of four inch squares cut into sides of the boxes, allowing them to be connected together with beams. These boxes are oddly shaped, one like a cube cut along the diagonal and the other like a cube with a rectangular chunk missing, which only adds to their versatility.

An almost completed box, missing two faces and the inner wall

Fast-forward three months: two
amazing boxes just as planned!

Since these boxes were created last year, they have had much use from the junior highers. Mr. Mitchell, the P.E. teacher, says that he is “very grateful that the Engineering Academy did this," and that "these boxes really enhance the fitness pursuits and the program as a whole." Judging by the frequency of use and Mr. Mitchell's gratefulness, this project was a resounding success. Great work, Providence Engineering Academy!

A grateful Mr. Mitchell urges his students on as they create
innovative workout routines

Inspiration from Michele Weslander-Quaid

(The next in our student blog series comes from Madison in 12th Grade.)

Earlier this semester, our Providence Engineering Academy had the honor of hearing from Michele Weslander-Quaid. She shared a brief description of her life growing up with many challenges and gave us the charge that we are never too young to lead or change the world. 

Despite some disadvantages in her background, Michele was able to accomplish incredible things, which she attributes largely to her mother’s sacrificial parenting sending her to a Santa Barbara Christian School. She went on to be the youngest Chief Engineer and the second female Chief Engineer in the history of her company, one of the youngest Senior Executives in U.S. Government history, and Google CTO for Public Sector and Innovation Evangelist.

Michele shares the wisdom she has learned over the years

Michele went on to tell us that too often people are judged by the circumstances into which they were born. She encouraged us that even if we have rough backgrounds, we should not let our disadvantages hold us back from our dreams for the future or let past experiences decide our fate. 

One of the powerful quotes she mentioned was by Charles R. Swindoll saying: “Life is 10% what happens to you and 90% how you react to it.” Life is all about the decisions we make based on events that have happened to us, not the events themselves. We can choose to let our past experiences or upbringing lead us to a never-ending cycle for generations to come, or we can stand up against those tendencies and do great things. We are in control of our own destiny.

The entire Academy poses with our guest!

A couple of years ago Michele spoke to us and gave a similar charge that we are never too young to change the world. It was that presentation that encouraged me to pursue a particular future for myself: to enter into one of the military academies as an engineer. 

I am still actively working today to reach that goal because of her. Michele is such an inspirational speaker and I hope that other students—or even adults—will realize that the difficulties of their past need not define their future.

Thank you again, Michele, for inspiring us with your life story.

Space: The Final Frontier

(This is the second in a series of blog articles written by the Providence Engineering Academy students. In the light of our recent trip to Jet Propulsion Laboratory in Pasadena, Ben in 12th Grade describes some of the history and future of space exploration.)

The concept of space travel has captured the public eye since the late 1800s with science fiction. As humans learned to blow things up in a certain direction more effectively, what was once science fiction became science speculation and from there we continued in our search for what lies beyond.

The entire group poses inside the famous JPL facility

On September 25, 2019, the Providence Engineering Academy was given the opportunity to take a glimpse into our country’s efforts to see just what else God has created in our universe at the Jet Propulsion Laboratory in Pasadena. We humans, as stewards of creation, have a special role in discovery and advancement of our world, and this stewardship is taken seriously at JPL. They have produced deep space telescopes, orbital telescopes, weather telescopes, rovers, etc. for this exact purpose.

Our host stands next to the life-size (non-functional!) sister of
the currently active Mars rover, Curiosity

Mankind continues our search for life on other worlds as JPL designs their next Mars rover, set for launch in 2020. This rover is designed to search the soil of Mars for any signs of life. As an engineering student, I am greatly inspired by the efforts that we as stewards make to find out more about our neighboring planets. Scientists are also hoping to research the seas of Europa, one of the largest moons of Jupiter, to see if there is any life below the outer icy shell. Since there are large bodies of water on Europa, many scientists wonder if creatures live there, just as there is sea life on earth.

Our host shares the incredible history of space exploration from
this site, with a scale model of the Cassini probe in the background

Meanwhile, deep-space telescopes have been expanding the radius of what we know. There are upcoming missions for my generation to develop, based on all of the ground-breaking work done by the gifted scientists at JPL and other locations. One such mission is to develop a telescope to photograph other solar systems so that we can see if there are similar planets to Earth in those systems.

We deeply appreciated the enthusiasm and brilliance on display at JPL, and we wait with anticipation for what the future might hold—perhaps we'll be a part of it!

Field Trip: Surreal Virtual Reality Studio

(The following blog article is first in a new series for this year, where each student in the Advanced Engineering II group is required to write a blog article on a recent field trip or related topic of their choosing. The first article comes from Joshua in 11th Grade.)

We thought space was the final frontier, but we were wrong. There is a new realm out there that is becoming readily available for exploration. Virtual reality is here, and it has been here for a while. Virtual reality, like it or not, is a growing part of world culture. It has grown so much that virtual reality arcades are becoming more and more popular.

The Advanced Engineering II class at Providence, myself included, had the opportunity to go to a new virtual reality arcade in Santa Barbara that is being developed by Mr. Whited. (Our field trip was for testing and educational purposes only, of course!) The studio had its grand opening on Thursday October 10th, and it is an experience fit for everyone, whether you want to have some family fun, a party, or just want to beat your high score that you were so close to beating last time you went. Mr. Meadth drove the group down to the intersection of Haley Street and State Street and we made our way over.

Joshua looks on as Nolan gets settled into his headset, ready for
a trip through the rings of Saturn!

Upon setting our eyes upon the testing site, the whole class was excited. We saw two stations for single-player games, one station for a two-player game, and two stations to host their four-player games. The Advanced Engineering II class was split up into two groups to play the four-player games.

The first game had us embarking on an expedition around Saturn as space rocks flew past. The second tested the fight inside of us as we were sent down an alien-infested river on a raft. Sadly, we had to make it back to school in time for pick-up.

Alex at Surreal Virtual Reality Studio sets up Sam and Pedro
with hand controllers and headset

Reflecting on the experience, Pedro remarked that “it was pretty amazing and fun. It was just a fun experience seeing how technology has improved.” Nolan afterwards said that it "was pretty cool. It was my first time using virtual reality so I didn’t really know what to expect. I thought it was a really fun experience. I also think that virtual reality will be a really useful tool in the future.”

Nolan was right about virtual reality becoming a useful tool, and in actuality it already is one. Virtual reality has some really amazing uses that are only just being made widespread. For example, teachers are able to use Google Cardboard, a cheap virtual reality setup which uses your phone as a screen, to take their students on virtual field trips that they wouldn’t be able to do normally. At the University of Westminster, criminal law professors use virtual reality simulations to teach their students how to hunt for clues and construct a murder case in a realistic scenario. Trade schools are able to use virtual reality to teach their students as well.

Virtual reality used to be a thing of the future. Now it is a thing of the present. It is coming quickly with surging popularity. It isn’t something to be afraid of, especially with all of the great uses for it. Virtual reality is something to be embraced for its dual ability to entertain and to educate.

(Surreal Virtual Reality Studio is open for business at 436 State Street, Unit B, just behind the Craft Ramen restaurant. Their October special pricing is still available, and you can make a reservation on their website. Thank you Mr. Whited for the chance to preview it!)

Summer Camp 2019

This summer, the Providence Engineering Academy once again hosted the very special Robot City summer camp. With assistance from four capable high school engineering students (Alena, Davis, Pedro, and Zach), Mr. Eves and Mr. Meadth put on an unforgettable experience!

(Please note that all photos in this article have been selected to avoid showing camper faces, since not all students are from Providence with a photo release. Apologies if you're looking for your loved one's smiling face!)

Day 1: Architecture
After breaking into four teams, each group selected the theme for their quadrant of Robot City. The Green Team chose Time Travel, the Blue Team settled on a Medieval Castle, the Yellow Team laid out an Alien Attack on the Beach, and Red Team was Future City. A quick lesson of folding geometric nets, and all campers from 3rd to 7th Grade were ready to build!

The skyline emerges! A colorful mess of card and tape!

Red Team's skyscraper went up and up and up, and needed to be
tied down with guy ropes!

Blue Team's "Nice No-Trap Castle". Should we believe them?

With inspiring challenges like "Tallest Tower" and "Most Colorful", each team worked hard to lay out their cities. Skyscrapers rose up six feet into the air, zip lines were strung out, and spaces carefully divided out.

Day 2: CAD and 3D Printing
It might sound complex, but physically printing CAD (computer-aided design) models is something within the reach of any elementary student! Mr. Meadth taught the campers how to use Tinkercad, a free in-browser design tool created by AutoDesk. Designers can use simple shapes such as cylinders, cones, spheres, and prisms to create more complex models, such as houses and rocketships and characters.

Two of our campers work on their CAD models (Owen's model
on the right is shown in detail below)

This is a great tool to get kids thinking in terms of linear dimensions, negative and positive space, perspective, volume, and it's just plain creative fun! Here are a couple of examples of what the kids came up with. We also had spaceships, tanks, flying cars, and castles. Wow!



Once created (the models above took the students less than an hour to build), the designs were sent to the 3D printer. At a small enough print size, most models were done in about an hour, in a range of colors. Of course, after the camp the students got to keep whatever they have printed!

It's just as addictive as watching TV, but at the end of the program
there's actually something to show for. Thanks, Raise3D!

Day 3: Electrification
Always a favorite! Mr. Meadth gave a quick lesson on simple circuits, explaining terms such as "LED", "voltage", "series", and "parallel". Each team was given a supply of copper tape, coin batteries, and LEDs, and shown how to connect them together to power their city. It wasn't long before the entire room was lit up with red, blue, orange, white, and green!

A lovely beach paradise in the shadow of the skyscrapers
(the tidal wave was added later)

The Green Team's time travel zone included some helpful signs
(because time travel can be confusing)

A scale replica of the Golden Gate Bridge, courtesy of Abigail

All teams took up the extra challenges as well, building working paper switches, including both series and parallel circuits, and working to match their lighting arrangements to their theme. Blue Team created "laser traps" for their medieval castle, and Green Team strung out a long neatly-lit road to mark out their different time travel zones. Billboard were illuminated and "stained-glass" windows lit from the inside.

Mr. Eves works on the Blue Team's medieval quadrant

LEDs don't come through well in photos, but you get the idea!

When parents arrived for pickup on Wednesday, the lights went out, and the party started!

Day 4: LEGO Robotics
What's a Robot City without robots? This year, Mr. Meadth and Mr. Eves guided the campers on how to incorporate LEGO Mindstorms robotics sets. Rather than creating robotic systems that would move around (and potentially destroy delicate buildings and circuits!), the teams focused on stationary mechanical systems. Mr. Meadth gave some lessons on essential mechanical systems (bevelled gears, gear reductions, universal joints, cams and cranks, etc.), issued some fun challenges, and away they all went!

Does this look like anybody's bedroom floor? Times it by 16.

A futuristic monorail glides around Green Team's city buildings

What's a medieval world without an authentic, functional windmill?

We were blown away by all of the amazing creations that campers and their team leaders built: several working elevators (with tracks and with pulleys/windlasses); a slowly rotating time travel portal (sadly not actually functional); a crank-powered shooting spaceship; an amusement park ride; drawbridges; a merry-go-round; several demolition machines!

(P.S. For any parents of elementary students wanting a more cost-friendly version of LEGO Mindstorms, I highly recommend LEGO Boost. At about $150, it is a somewhat simplified system, still with sensors, motors, and fully programmable using a block-based system. The only downside is that it does always need a tablet/phone/computer app to be running via Bluetooth to make it work.)

Day 5: Do Over
At this point in the camp, the kids have learned so many different things and have typically gravitated towards one or the other. Some of them think that LED illumination is the coolest thing, and others just can't get enough of making CAD models online. So on the fifth day, Mr. Meadth and Mr. Eves issued a few more challenges of various sorts. The teams helped put together a welcome sign with their photo on it; they all constructed a wearable accessory lit up with more lights and batteries. Some made hats and funky glasses and others made glowing swords!

The fun keeps coming on Day 5!

Robot City continued to grow in complexity and variety. Some teams incorporated sensors into their robotic systems, using touch triggers and infrared detectors to more accurately control their elevators and bridges.

By the time parents arrived at 12:30, the teams were ready for the final wrap-up. All points were tallied, and the all-girl Green Team took the grand prize, much to their delight!

Parents were delighted to see everything
the kids had accomplished... and that
someone else was handling the cleanup!

Mr. Meadth and Mr. Eves would like to thank all families for making our third Robot City camp such a success! We intend to run this again in 2020 (new ideas are already in the works!), so please spread the word amongst family and friends. You can start by sharing this article with someone who might be interested! And remember, this camp is open to all students, not just those from Providence. We're always glad to welcome new friends from outside our regular community.

Until next year, may these junior engineers keep on designing and keep on building!