Blogpost #4


I finished my project on Friday and fixed all the problems.

How it works:

My solar fan only works when there is strong light/sun light, because it needs enough energy to power the fan and to make it spin. The solar panel provides solar energy which is then converted to mechanical energy by the motor. The mechanical energy boosts the fan and it starts spinning.

Areas I was successful in:

  1. I made sure that all my wires were hidden and could not be seen, which makes the solar fan seem more professional and appealing. I made a few holes next to the wires so the wires could go beneath the platform and connect to either the motor or the on/off switch. As a result no wires can be seen on the platform or around the solar fan. I wrapped yellow tape around the wires that went up to connect with the motor, so it would look more aesthetically pleasing.  In addition, I painted the and decorated the solar fan so it wouldn’t look too plain.
  2. While I was building the solar fan, I made sure to sauter all the wires so the connection would be very stable and secured.
  3. I made sure that the direction where the wind would come out from is not facing the sun but facing the customer. Because if the direction of the wind is facing the sun that wound mean that the customer/user would need to face away from the sun while using the fan, which will somehow block parts of sunlight from getting to the solar panel. Thus, I built the fan facing backwards to the sun allowing the wind coming form the opposite direction to the sun.

Areas I need to improve on:

  1. Next time I should be more careful when I paint the platform, because this time while I was paint it, I might have accidentally colored the wires, which made the connection sometimes not stable.

Impact on environment and potential customers:

This solar fan will provide electricity-free wind anytime and anywhere as long as there is sunlight/strong light. Electricity won’t be needed which is beneficial for the environment. The potential clients can be whoever needs the most convenient fan, a fan that can be used anytime when needed.

Final testing video:


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Blogpost #3


In the first class I finished gathering all the material that was needed and started on making the fan. I completed the fan itself by the end of the second class and was prepared to attach the solar panel and wiresnext class. I encountered some difficulties as I was building the fan during the second class. The teacher and I were trying to find a stick as the thing that you put between the fan head and the motor to connect them, but there weren’t any sticks that were thin or thick enough to fit perfectly. So we decided to use sand dust paper and thin the wood stick before drilling a hole through it. It took me a very long time until the wood stick finally fitted between the two fan wings. After chopping the stick, I had to drill a hole in it for the motor to connect, in order for the fan to spin as the solar panel activates the motor. This was a hard task to drill a perfect sized hole that will keep the motor tightly in it, but I overcame thechallenges and added some hot glue between the motor and the stick to make it more stable.


At the end of the second class, I finally finished glueing the fan onto the board and just needed to attach the solar panel and wires. The whole process was very smooth and there weren’t any problems that occurred.


I finished my first prototype by the end of the third class, and tested it at the start of the fourth class. My solar fan worked and started to spin as the heat reflected on the solar panel, my wires were secured and the connections were well. But there was one problem with my solar fan which was that the wind came from the side where the solar panel was facing, in other words, the user would be on the opposite side (the back side)of the fan in order to feel the wind. The users body may be blocking the sunlight and it would be very inconvenient to use, so I flipped the fan head around to solve this problem. My first testing was done, and everything except the direction of the wind worked well.

First testing video:

Second Testing video:


I did my second testing with the direction of the fan fixed, but I may have triggered or loosened the stick holding the motor and fan wings as I flipped them around, resulting a tik-tak noise that occurs every time when the fan spins. But that wasn’t much of a big problem and could be solved by hot glueing the wood stick and the motor tighter.





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Blogpost #2

Material list:

  • wooden board
  • solar panel
  • motor
  • glue gun
  • fan head
  • wooden stick
  • on/off switch
  • wires
  • driller
  • wood cutter
  • ruler
  • acrylic paint


Monday: Prepare all the material needed. Start cutting the platform and building the fan.

Wednesday: Finish making the fan and start connecting the solar panel and wires to it.

Friday: Finish the project and color it with acrylic paint.

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Blogpost #1

Previous Ideas:

I wanted to create a project that uses solar energy or electrical energy. My first idea was to construct a DIY vacuum cleaner using recycled bottles. The vacuum cleaner would be small and easy to carry and could be used for daily purposes. We are sometimes bothered by cleaning dust and little piles of dirt on the floor, because it would be too much to carry a huge vacuum cleaner to just clean scattered dust, hence a small vacuum cleaner would be the solution. Especially this mini vacuum cleaner is made of recycled bottles, which is good for the earth

My other idea was to make a gun that shoots out confetti for parties or celebrations. This project is more of an entertaining creation compared to the mini vacuum cleaner. But the confetti gun won’t be as useful as a cleaner and would also be very difficult to make.

Current Idea:

My final decision was to make a solar powered fan that cools down your hot summer! It will be a very convenient creation. First of all, it won’t be a manual fan, but instead a fan that spins automatically. Manually functioning fans are very tiring, it doesn’t cool you down, instead, makes you sweat more. Using the solar energy to power the fan will solve the battery problem that many fan projects face. Since it uses solar energy, the fan won’t run out of battery and will not need to be charged. The solar panel will absorb the sunlight and transfer energy to the fun in order to spin it.

cons: It will be difficult to attach the solar panel to the fan itself, but if I don’t stick them together, the whole project will be placed on a board and that will be very inconvenient. In order to solve this problem, I’ve decided to use a small solar panel and add it maybe on to the fan, but this still needs to be tested.

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After Learning

In the Capstone unit, I learned about Economic Growth and Decent Work in China. Economic growth is an important achievement on creating a prosperous country. It can reduce poverty, alleviate unemployment and provide people a higher living standard. In this project, I had the opportunity to do a specific research on a topic and learn individually about every aspect of it. During the interviews, I learned many efficient techniques to interview a person without them feeling uncomfortable. If I had the chance to redo this project, I would try my best and interview more people. Then I would have more evidence to support my claim.

To next years students who are doing the Capstone project:

Make sure to do a lot of research and interview a lot of people.

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Catapult Challenge

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Polymer Design Journal 4

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It was a pleasure to BURN

“It was a pleasure to burn.” (7, Bradbury)Fahrenheit 451 written by Ray Bradbury is a dystopian book that predicts the worst sides of future. The story settles in a time when owning books and reading them are illegal. Entertainments and electronic devices replaced education and nature exploration. Immediate gratifications and entertainments were the main needs of ones life. Conformity was strongly suggested and Individuality was abandoned. People lived the same lives and never questioned. But there may always be some people who would want to break the rules and think for themselves… “The censorship by the government encourages curiosity from people and leads them to exploration.” Is the theme of this book. The control the government has over its citizens and books lead people to reading books. Our protagonist Montag finds the beauty within books and tries to fight against a society that embraces and advocates ignorance.

Montag, a “firemen” who works together with his coworkers and burn books upon discovery.  They believe books bring fights and misery. Montag and the others have no qualms towards their responsibility, they are emotionless. Until one day when Montag receives a alarm and goes to an old woman’s house. Between the dazzling flames stood a old woman next to the books, she refused to come out of the house. Montag saw the strong will with in her eyes. He was shocked and wanted to discover what was the secret hidden between the books that would make a person not fear for death. This is the part when a thought of reading arises in Montag’s head.

All in all, the fast cars, loud music and immediate gratification creates an over stimulated society. When there’s no place for self-reflection, appreciation towards nature and independent thinking. Nothing feels realistic, “She was holding the seashell next to her ear.” (43, Bradbury) Montag’s wife was addicted to technology. She assumed that the televisions and electronically devices were her relatives. The censorship in this story is similar to the media censorship happening in China, when google and many other foreign websites are blocked and people loose the freedom to surf on the internet freely. Many censorships are occurring all over the world, there may rebellions or followers…

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Polymer Design Journal 3#

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Journal Entry 2#

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