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<html>
<body bgcolor="#b81212">
<center>
<h1 style="color:#FFFDD0">My Engineering Notebook</h1>
<marquee><i><h2 style="color:#FFFDD0">The Website :)</h2></i></marquee>
<button><a href="https://www.foodnetwork.com/how-to/articles/how-to-make-perfect-rice-a-step-by-step-guide">rice.</a></button>
</center>
<center>
<img src="lizard.jpg" width="150px">
<img src="catalina.jpeg" width="150px">
</center>
<u><h1 style="color:#FFFDD0">6/1/23</h1></u>
<p style="color:#FFFDD0"><i>
We raced in our boat yesterday! We made it to the other side of the pool pretty easily, and we were able to turn the boat around quickly. However, I had trouble balancing my weight and the boat started getting water in it. We made it around 3/4 of the way back before the boat sunk. If we were to make cardboard boats again, I think that designing the boat to be slightly wider would help with balance and not reduce speed too significantly.
</i></p>
<button><a href="https://youfiles.herokuapp.com/videodictionary/?m=Video_Player_Drive&state=%7B%22ids%22:%5B%221qlXra6QZmYDnlbV7kpZgS4ZgDHBDTWRI%22%5D,%22action%22:%22open%22,%22userId%22:%22117701192169451363354%22,%22resourceKeys%22:%7B%7D%7D">video of the boat in water</a></button>
<u><h1 style="color:#FFFDD0">5/26/23</h1></u>
<p style="color:#FFFDD0"><i>
Our challenge was to, using paper and tape, make a bookstand that would keep a book upright when slapped. We had 2 class periods to work on it. My group's design used rolled-up papers as bars to prop up the book slot, which was a 'cage' of more paper bars. It held up against the first few slaps, but broke apart when I slapped it across and off of the table.
</i></p>
<img src="bookstand.png" width="200px">
<img src="" width="200px">
<u><h1 style="color:#FFFDD0">5/15/23</h1></u>
<p style="color:#FFFDD0"><i>
Our boat is nearly ready for water. If we have duct tape to spare, considering that we don't know exactly how much duct tape our paddles need, we can seal up as much of the base of the boat as possible. There are 3 or 4 layers at any point, but having a water-proofed base would be nice. We also had our first Challenge Day for a long while last Friday. We spent around 30 minutes cutting up unlimited paper with scissors and taping pieces together to build a paper roller coaster. It can't support a marble for the entirety of the ride yet, but we're also working on it for the remainder of class today, until the roller coasters are graded(5 minutes before the bell).
</i></p>
<u><h1 style="color:#FFFDD0">4/20/23</h1></u>
<p style="color:#FFFDD0"><i>
Open House is at 6PM today! <br>
So far, I, with the rest of my group, have redesigned, traced out, cut out, and assembled our cardboard boat. We double-layered most of it, and even triple-layered the base. Yesterday, I adjusted the position of the front section of the base to be angled a bit more diagonally(it's kind of curved/more smooth-ish-looking now). We haven't decided if we'll use hand-fitted paddles or oars to move around, or finalized any plans for them. Also, we've been using minimal amounts of duct tape so far, because we haven't gotten our allotted 1 roll of duct tape yet. Once we do, we'll probably seal the cardboard base, all the gaps, and maybe wherever needs some extra durability, like the cut edges of the cardboard.
</i></p>
<u><h1 style="color:#FFFDD0">4/7/23</h1></u>
<p style="color:#FFFDD0"><i>
In the past 2 weeks, we designed and built a device that would protect an egg from cracking when dropped from the balcony onto the concrete ground. Our materials were limited, so we used 10 cotton balls, 10 plastic straws, 1 plastic trash bag, 1 cardboard box, 10 sheets of paper, 2 feet of string, 1 plastic sandwich bag, and around 6 feet of Scotch tape. Our egg survived the fall. We also finished a CAD for a cardboard and duct tape boat.
</i></p>
<u><h1 style="color:#FFFDD0">3/10/23</h1></u>
<p style="color:#FFFDD0"><i>
For Spring Break, I went to an archery tournament close by, practiced archery, studied, did homework, and bought cross-stitching supplies. This week, we designed our egg drop devices in TinkerCAD. Our plan is to put the egg in a small plastic bag filled with cotton balls, then pack that into a cardboard box lined with crumpled balls of paper. Finally, we'll attach a trash bag parachute to the box to slow its fall.
</i></p>
<button><a href="https://www.new3jcn.com/simulation.html">physics simulations</a></button>
<button><a href="https://docs.google.com/document/d/1KG-5E5wEr_reyVjtE8kCCJn6NUsG_qXGx0rojp3gUgk/edit">simulation review</a></button>
<img src="eggdropCAD.png" width="300px">
<u><h1 style="color:#FFFDD0">3/3/23</h1></u>
<p style="color:#FFFDD0"><i>
My car rolled around 10 feet(?dunno, I'm not great at judging distance) before it started swerving to the right, and then collided with another car. Both cars were stopped. The mousetrap on my car was around 75% through its snapping back of the wire. I think the car didn't roll in a straighter line because I only had one wheel in the front, so it was harder to keep balance. I tried to work on balancing both sides of the car this previous week, because I noticed that the car would swerve to the left in every test run, but I ended up imbalancing it to lean right instead. From this, I learned that plans to improve designs in theory can be difficult to actually do. A 3-wheel car should, in theory, accelerate faster than a 4-wheel car, but my low ability to build mousetrap cars resulted in a car with unbalanced sides. I've learned that, next time, I should just go with the easier, safer method.
</i></p>
<img src="MTcar5.png" width="200px">
<video width="900" height="600" controls="" loop="">
<source src="MTcar.mov" type="video/mp4">
</video>
<u><h1 style="color:#FFFDD0">2/24/23</h1></u>
<p style="color:#FFFDD0"><i>
I finished making a functional mousetrap car, but it still has plenty of room for improvement. The body leans to the left because it's hooked tightly to the right side of the axle but loosely to the left. The fishline often snags on the rings of hot glue I added to prevent the body from sliding around. Sometimes the car rolls backwards rather than forwards, not because of mechanical error, but because I keep forgetting which way I need to wrap the string around the axle in(I need to roll the wheels so that it looks like they're rolling backwards). The car as a whole is somewhat unstable, which should be improved when I straighten out the hooks and add more hot glue.
</i></p>
<figure><img src="MTcar4.jpg" width="300px"></figure>
<figcaption>from the video of a short test run</figcaption>
<u><h1 style="color:#FFFDD0">2/17/23</h1></u>
<p style="color:#FFFDD0"><i>
This week, I worked on connecting the back wheels of the car to the frame. I glued on 2 loops of fishline to the end of the frame, and put the axle through both. Then, I glued both wheels to each side of the axle, with the larger cardboard pieces facing outwards. I also started working on the front wheel of the car. Next week, I need to finish and connect the front wheel to the frame, and attach the mousetrap to the frame.
</i></p>
<img src="MTcar3.png" width="300px">
<u><h1 style="color:#FFFDD0">2/10/23</h1></u>
<button><a href="https://docs.google.com/document/d/1XD2EpZbhBBFyuc9rYaYwNcF7UEFU-NjmgIm_MqnhaSA/edit">water balloon delivery</a></button>
<p style="color:#FFFDD0"><i>
This week, I worked on the wheels of the mousetrap car. I hot-glued together 2 layers of cardboard and cut out a circle. For challenge day, we had to attach a device made out of popsicle sticks and rubber bands to the end of a meter stick with duct tape, and then transport a water balloon held in the device across the basketball courts. Our device failed, because the water balloon slipped out of the sides of it. If we had more time and materials, we could have added more walls so that the balloon couldn't slip out.
</i></p>
<img src="MTcar2.png" width="300px">
<u><h1 style="color:#FFFDD0">2/3/23</h1></u>
<button><a href="https://docs.google.com/document/d/15Cs9FnF8xvGYmG8KccjlBwdJobPysf_F8FUngvxIghc/edit#">project proposal</a></button>
<p style="color:#FFFDD0"><i>
My design for a moustrap car minimized weight of the vehicle. It has 3 wheels, rather than 4, so that there's less traction and the car can accelerate more easily.
</i></p>
<img src="mousetrapCAD.png" width="300px">
<img src="MTcar1.png" width="300px">
<u><h1 style="color:#FFFDD0">1/27/23</h1></u>
<p style="color:#FFFDD0"><i>
1. I learned that chemical engineering is based on using chemical reactions. It includes petroleum engineering, which has the highest median salary in engineering career. <br>
2. We made non-Newtonian fluids(oobleck) in the small parking lot. At first, our oobleck was too thick - it would melt into a sort of sludge instead of a thinner liquid. After we added and mixed in some water, a little at a time, the oobleck became much thinner. It would react immediately to quick stabs with a plastic spoon by solidifying, but if the spoon were slowly pressed in, the oobleck would not react. I took a cup home. <br>
3. I chose the mousetrap car as my project. I need to design and build a mini car powered by a single snap of a snap-back mousetrap. From looking up websites and resources for building mousetrap cars, I think that my approach should be to minimize weight and internal friction, but to be careful about balance in exterior friction and the size of the driver wheels.
</i></p>
<img src="oobleck.jpg" width="400px">
<u><h1 style="color:#FFFDD0">1/19/23</h1></u>
<button><a href="https://docs.google.com/presentation/d/1dg1mZDmmZYexSm-i8Eydtz1lKuWMi69IHysGeiLndYk/edit#slide=id.p">business presentation</a></button>
<p style="color:#FFFDD0"><i>
From planning and presenting business slides this week, I learned about factors that determine a business's present worth and predict its future worth. When other groups presented, I got to consider whether or not I wanted to invest in their companies. Plus, rather than just a plain exchange of money and stakes, trying to consider the benefits of royalties and connections made things a bit more interesting.
</i></p>
<u><h1 style="color:#FFFDD0">1/14/23</h1></u>
<p style="color:#FFFDD0"><i>
1. Our final bridge from last semester snapped early on, where the water weight hung from. <br>
2. For winter break, my family went to Japan. My mom left a week before the rest of us because she wanted to clean up my great-grandma's old house by the time we arrived. The house has a security system installed, and people hired for maintenence come by every once in a while, but the inside of the house had been left nearly undisturbed during the 4 years since our last visit. Luckily, there was no major structural damage, or issues with water and electricity. We visited my grandparents for a day and walked through a New Year's festival, but most of my time was spent on archery and shopping. I'd never gone during the winter before, so it was exciting to try the winter traditions.
3. I learned how business goes hand-in-hand with engineering in that it markets a solution to a problem(a product of engineering).
</i></p>
<u><h1 style="color:#FFFDD0">12/15/22</h1></u>
<p style="color:#FFFDD0"><i>
We're pretty much done with our bridges now. Our group made 2, and we'll turn in whichever one holds more weight in the tests. One of them is a very long triangular prism, and the other is like a railroad track with a bunch of randomly rotated rails. The first is brittle but strong, and the second is bendy but not very strong. We made a presentation for both of them, with pictures of them being built:
</i></p>
<a href="https://docs.google.com/presentation/d/1aTFoHti4CjcM0LcC6ftNsxDJyiolDkpfpiHZd-ys9T4/edit#slide=id.p">spaghetti bridge presentation</a>
<u><h1 style="color:#FFFDD0">12/2/22</h1></u>
<p style="color:#FFFDD0"><i>
We're making bridges for civil engineering. One group makes one bridge to be tested by hanging a weight from it. The bridges are made out of 20 pieces of spaghetti and some wood glue. So far, we've started to glue together our first test attempt.
</i></p>
<img src="bridgeCAD.png" width="200px">
<img src="bridgeSketches.jpg" width="200px">
<u><h1 style="color:#FFFDD0">11/18/22</h1></u>
<p style="color:#FFFDD0"><i>
We gave code to our Arduinos to make the LEDs flash in patterns and fade in and out. Yesterday, our challenge was to come up with a solution for a bromate contaminated reservoir. The bromine and the chlorine in the water was being combined to form bromine because of the sun exposure. The correct solution was shade balls. Here's a video of one of the circuit patterns:
</i></p>
<video width="900" height="600" controls="" loop="">
<source src="led.mov" type="video/mp4">
</video>
<u><h1 style="color:#FFFDD0">11/9/22</h1></u>
<p style="color:#FFFDD0"><i>
We got to use real, physical breadboards and wiring and all that stuff! We got 3 models to replicate on our breadboards, and my partner and I finished 2 of them. It was really cool to physically create circuits with my hands, but fitting the wires into the holes reminded me of trying to get thread into a needle.
</i></p>
<img src="breadboards.png" width="800px">
<u><h1 style="color:#FFFDD0">11/4/22</h1></u>
<p style="color:#FFFDD0"><i>
We started learning about electrical engineering a couple of days ago, and so far it's a bit harder to understand than the previous subjects. But, strangely enough, they don't get paid much compared to the other engineers. Maybe the concept is hard, but it's easier once you get it. I made some breadboards in TinkerCAD, and attempted to use the info we got about series and parallels?
</i></p>
<img src="BBCAD1a2.png" width="600px">
<u><h1 style="color:#FFFDD0">10/24/22</h1></u>
<p style="color:#FFFDD0"><i>
In groups, we designed and modified water bottle rockets with cardboard, construction paper, flexible wood sticks, and duct tape and hot glue to hold it all together. It looked pretty good a day before the launch, but then we ended up not being able to fix the leaks in the bottle, so the rocket had to be taken apart and put back together. It looked a little messier, and it didn't fly very well, but this week was fun.
</i></p>
<img src="rocketCAD.png" width="200px">
<a href="rocketBOM.pdf">water bottle rocket BOM</a>
<img src="rocket.jpg" width="200px">
<video width="900" height="600" controls="" loop="">
<source src="rocket.mov" type="video/mp4">
</video>
<a href="rocket.pdf">water bottle rocket PDF</a>
<u><h1 style="color:#FFFDD0">10/7/22</h1></u>
<p style="color:#FFFDD0"><i>
Our project this week was to dissect a computer, examine the parts, and put it back together. We parterned up and filled out a worksheet too. I've never seen the insides of a computer before, so it was pretty cool. Everything, even the little silver dots, have labels and codes in tiny print next to them!
</i></p>
<img src="dissection.jpg" width="200px">
<u><h1 style="color:#FFFDD0">9/30/22</h1></u>
<p style="color:#FFFDD0"><i>
I finished my animal prosthetic CAD yesterday. I designed a tail for a western fence lizard, so that it can break of its tail more than once. I wanted to embed a Spotify song, but most social media websites are blocked on this chromebook. But, YouTube isn't, so here's an interesting video:
</i></p>
<img src="prosthetic.png" width="200px">
<iframe width="560" height="315" src="https://www.youtube.com/embed/MdRLVgRRce8" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<u><h1 style="color:#FFFDD0">9/26/22</h1></u>
<p style="color:#FFFDD0"><i>
We finished our Rube Goldberg projects this week, and tested them. I don't remember exactly, but only our project was able to pop the balloon within 1 try in the final run. Multiple balloons were over-inflated and popped ahead of time - I was surprised every time. I think we're finally moving onto a new unit this week.
</i></p>
<img src="myRubeCAD.png" width="100px">
<img src="groupRubeCAD.png" width="100px">
<img src="groupRube.jpg" width="100px">
<video width="900" height="600" controls="" loop="">
<source src="groupRubeVid.mov" type="video/mp4">
</video>
<u><h1 style="color:#FFFDD0">9/16/22</h1></u>
<p style="color:#FFFDD0"><i>
Our class split into groups to work on building Rube Goldberg-style chain reactions, out of cardboard and tape. Compared to other experiences, my group isn't terrible, but it's still a little frustrating. I hope we can complete construction in time. Also, for Challenge Day, randomly assigned groups of 3 folded paper, weighed the paper with classroom objects, and tried to have them float on water for 5 minutes. My group added 185 grams, far too many in retrospect, and our paper boat sunk in 2 minutes.
</i></p>
<img src="paperboat.jpg" width="100px">
<a href="paperboat.pdf">paper boat PDF</a>
<u><h1 style="color:#FFFDD0">9/8/22</h1></u>
<p style="color:#FFFDD0"><i>
Mr. Poole is in a meeting, so we have a sub. I've heard every curse word and literally every derogatory term in this class. I like the classwork, but I could definitely do without around half of my classmates. Back to School Night starts at 6:30PM. The CBHSAA at Oranco is on Saturday, so I'm going to try to fine-tune my form during gararchery this afternoon, and pinpoint my sight settings tomorrow. The CBHSAA is more of a practice tournament than others, but I still want to shoot well. Fortunately, the crazy heatwave this past week seems to be dying away. It drizzled a bit today, and the weather report predicts rain on Saturday. Also, contradicting my belief in her immortality, QUEEN ELIZABETH HAS PASSED!
</i></p>
<img src="queenElizabeth.jpeg" width="100px">
<u><h1 style="color:#FFFDD0">9/2/22</h1></u>
<p style="color:#FFFDD0"><i>
On Thursday, we tried to toss and catch sticks simultaneously. A couple of my classmates are annoying. In class, we learned about lab safety and what mechanical engineering is. Yesterday, another Thursday, we were challenged to try our best to create a CAD of a kitchen appliance. Each side of the room was assigned a judge, and we needed to quickly make our CADs within the time limit. The judges were walking around and looking at our screens. We ran short of time near the end of class, but I ended up winning a Kit-Kat bar for my toaster-oven replica. My goal picture is on the left and a screenshot of my final CAD is on the right:
</i></p>
<img src="referencepic.png" width="100px">
<img src="replica.png" width="100px">
<u><h1 style="color:#FFFDD0">8/19/22</h1></u>
<p style="color:#FFFDD0"><i>
Today, I was absent from class. So, I wrote this on the 22nd.
</i></p>
</body>
</html>