(Hi(=)(=Wan Hin=)(=)iH)

G9 Science Project CI

March 9, 2022 / wanhin.liu / Comments Off

February 21st:

Attempted to assemble the complete circuit system together.

The circuit did not operate as it was supposed to do.

February 23:

Cut out the wood pieces and PVC pipe for the turbine fans.
Assembled a few turbine fans together.

February 25th:

Completed assembling all six turbine fans.
Drew and cut out two identical hexagons to hold all the fans in place.
Used wood glue and nail gun to attach the turbine fans to identical hexagons.

May 3rd:

In school:

Completed assembling all parts of the wind turbine.
Soldered the USB type A port.
Tested how much wind would be needed for the turbine to spin.
Sawed the dwell piece that is appropriate for the dwell piece.
Drill pressed a hole in the turbine cylinder stick.

Outside of school:

3D modelled the sleeve and base of the wind turbine.

May 7th :

Completed final product.
Fixed the circuit and re-soldered it.
attached the ball bearing piece to the turbine.
super glued the 3D printed base and reinforced it with two more extra wood bases.
Tested out our final product.

Feedbacks/Things we could have done better:

The central dwell was way too long, making the whole machine unstable against strong wind. We either could have shortened the dwell and the 3D printed sleeve, or made the sleeve and base stronger with a different material, although that might have been too time consuming.
The fan blades may also be inproved, it could have been lighter so weaker or less wind can generate the same amount or more electrcity. On top of that, the blades could have also been bigger, making it catch more wind and more efficient.

Improvments/Changes to Prototype:

While making the blades, we decided that it was a better idea to attach the wodden bars to the side of the cut pvc pipes instead of the middle. This helped the blades catch more wind, making it more efficients. Doing this makes the turbine only able to spin in one direction and not the other; however, we do not need the function for it to spin in two directions.
The centre part of the turbine was also different from our prototype design. The initial design was to use a circular piece to hold all the blades together. What we quickly realized was that using two pieces of hexagon shaped pieces to hamburger the blades into place is way more stable than our inital design. This way would also help us know where to put the blades better as the math is way simpler.
Our inital plan was to directly attach the dynamo to the central dwell. This designs main problem is that it is extremely hard to position the dynamo in the centre of the dwell and well balanced, and faliure to do this would result in the dynamo bending. If we attached a base to hold it in place straight away, it would cause too much friction and cause the turbine to be less efficient. Our solution to that was to attach the dynamo to a dwell which was connected to a ball bearing that was connected to a 3D printed sleeve and base.
Even on top of that, we had to make changes since the sleeve was not able to fit the ball bearing inside. Due to time restrictions, our only solution was to force the ball bearing in, cracking the 3D printed sleeve. Our solution to that was to tie it up with zip ties, rubber bands and a bit of super glue.
The 3D printed base was not heavy enough nor wide enough to hold the device in place against strong wind, meaning the whole thing would be blown away. We decided that we had to add something heavy to hold it down and wide for it to hold onto the ground. What we decided at last was to make add two pieces of wood at the bottom to hold it down. One 15x15cm and the second one 18x18cm
The last problem we faced was that—since the 3D printed case was cracked—there was a huge gap between the dynamo and the sleeve. This caused the dynamo to spin along with the turbine, thus tangling and breaking the wires connected to the battery. Our first solution was to use some type of glue to glue it in place, but we quickly came to realized that the gap was too big for glue to fill, and that glue may seep pass the dynamo and hold in place the parts that are supposed to be spining instead. Our final solution was to use super-glue-covered popsicle sticks that filled the gap between the dynamo and the sleeve, which was a double solution as the popsicles stablizes the dynamo and the glue holds it in place. Some parts of the stick were sticking out so we had to cut it off for the base to be flat and stable.

G9 Science Project DI

February 21, 2022 / wanhin.liu / Comments Off

Video of a DIY energy generator. Converting mechanical energy to electrical energy. May be able to keep charging a battery in the background as a backup if the main energy generator is wind or solar since their might not be much wind or sun.

Might be harder to get all the materials but is pretty simple to make.

DIY energy generator from hydro to electrical energy. This can be used as a main power generator if the water is strong enough to make it spin fast enough. However this might be harder to get water to power it since it would just be a waste of water if we just leave a water outlet on like it is in the video. If I make the water cycle somehow, it might be too complicated for this two week project. The components of this may also have to be waterproof. Might be able to use rain to power but no rain in beijing.

Another version of a energy generator neodymium magnets, can generate constant energy, however might be more complicated to make and get materials for it. Depending on how much power this can generate, this can be used as a backup or it can power battery as main constantly.

G9 Science project DP

February 21, 2022 / wanhin.liu / Comments Off

Will’s VAWT wind powered generator will be able to charge a battery in the battery pack while the battery pack is connected to the diode which is connected to the circuit board with the USB cable plug. My solar panels may be able to be connected to the same battery pack, but powering different batteries. This way, all four of the batteries would be able to have power and power the circuit board that is charging the phone. Another option would be for Will’s VAWT and my solar panels power two different battery packs which powers two different circuits, each generating 3 volts. But the problem would be to somehow connect the two circuits and then charge the phone as the phone only allows one cable to be plugged in.

Socratic Seminar Reflection

February 9, 2022 / wanhin.liu / Comments Off

I prepared well for the seminar since I wrote a lot of open-ended questions that could be asked; however, most of them were on the plot and very few were about specific writing techniques. I also did well on participating, as I participated a right amount and also invited people into the conversation.

Something I need to work on is to ask and build more on specific writing techniques, since I mostly just asked about the plot of the story. I also need to work on speaking more formally and not using words like ‘like’ as much as I did.

My next goal would be to ask more deep and meaningful questions on writing techniques that people in my group can build off of.

To achieve this goal, I will try to keep the groups conversation mostly about writing techniques and prepare some open-ended questions about specific writing techniques that other group members can build on.

Reading Reflection #2

November 29, 2021 / wanhin.liu / Comments Off

I am still reading the book “Allegiant”—the 3rd book of the Divergent trilogy. When the protagonist goes outside of the walls, the lies of her old world was revealed to her. The factions she used to live by are shattered even more as she learns how it is only to fix damaged genes. The author, Veronica Roth, believes that humans are not, and should not be grouped into different categories, humans can have many different sides and personalities, and if they only have one, then they are “broken”, like how people in the story are supposed to grow back to normal genes. This is a series I would recommend to people who likes action-packed adventures since there is a lot of action in this trilogy.

Reading Reflection #1

November 9, 2021 / wanhin.liu / Comments Off

The book I am reading is entitled “Allegiant”, it is the 3rd book of the Divergent trilogy. The series a science-fiction novel for young adults, about people who lives in a walled city, and the factions that the protagonist believed in was shattered, which is why when given the chance to explore what was above the limit of what is already known to her, she takes it. This book was written in the perspective of two different characters—Tobias and Tris. This book connects to me because even in real life, I sometimes categorize people into different categorizes, like the factions in the book, and I sometimes wonder what would happen if people stop doing that.

English 9 SWOT and Goals

September 7, 2021 / wanhin.liu / Comments Off

Strengths:

Good reading habit

Weaknesses:

Writing
Grammar
Writing on paper
Not good at speaking

Opportunities:

Unknown

Threats:

Responsibility and Self Management
I have swim training almost every day. This will reduce the time I can spend on assignments and reading

Goal:

By writing and annotating more on paper, I would like to achieve more confidence in writing on paper. I will know I have achieved this when I can write on paper as good as I can type on computer.

Sewable Electronics Project: ISB DRAGON MURAL

June 15, 2021 / wanhin.liu / Comments Off

My original plan was to make a dragon mural with Jayden Guan and William Kim. I was going to make the dragon head with 10 LEDs along its neck and one LED on the eye (it says 5 on the plan for some reason but it was going to be 11 in total). I was also going to add capacitive touch for my input. We also decided to use the infrared sensors on each of our CPX’s to send signals to each other, making the whole dragon able to light-up from the bottom. Above the dragon head would be three letters: I, S, and B. The code for my part would light up from the neck, one by one going up to the eye when my capacitive touch is touched 1 time, send signals to the other dragon parts when the capacitive touch was touched 2 times, when the bottom part of the dragon receives the signal, it lights up from the bottom, one by one, until it gets to the middle section of the dragon. Then, the middle section—which was waiting after it received the signal—would also light up from its bottom LED. After that, my part would light up from the neck to the eye so the whole dragon would be lit up. When my capacitive touch was touched 3 times, it would do something else that was not decided at that time.

The main change was when I was actually making the project, I realized that 11 LED was not exactly doable in the time we had, so I decided to scale it down to 6 LEDs, and if it’s still too much for the time, I would’ve done the 3 important LEDs—I decided to do 4 LEDs (three on neck, and one on eye). Even though I scaled down a lot of the other parts, the code did not change much, except that I removed when it was touched 3 times, since I just couldn’t decide what it should do when it was touched 3 times.

In this project I learned how to use the infrared sensors. Before, I’ve worked on some projects that had infrared sensors on them, but I never really got to actually using them in my project. We tested them out since we had no idea how it would work, and what the range is, but I was really surprised how far away they can be since I thought they had to be almost touching to send and receive signals from each other. Knowing that, I realized where we had to put the CPXs for it to work, but sadly, even though we tried to put them as close as possible, the bottom piece is still out of range. Now that I know how exactly the infrared sensors would work, it gave me many new ideas I can maybe make later on in life that wasn’t possible without the infrared sensor.

PROCESS PHOTOS:

Final Project

Circuits

May 6, 2021 / wanhin.liu / Comments Off

For this circuits formative, I chose the Legendary Proficiency mark of the game King of Glory. I chose this design because 王者荣耀 (King of Glory) is a game I really enjoy playing, the 传说熟练度标 (Legendary Proficiency Mark) is an important symbol in the game and it just looks really cool to me. The other two designs I made was a mark of the character 兰陵王(Warrior LanLing)’s, which is also from the game 王者荣耀, second ability: 秘技·影蚀(Secret Skill·Shadow Eclipse), and a Minecraft character. I figured that I was up for a challenge and I realized that the 传说熟练度标 would be the hardest to sew, which is why I chose that one.

The thing I was most proud about this project is the design itself, it took a lot of time to plan out and prototype all the pieces to make it look good. Thankfully, it paid off and I was really happy with my final design.

This project helped and made me learn a lot of new things, for example, sewing itself. I have actually never sewn before, and in this project I learned not only how to sew with normal thread, but also with conductive thread, which I found was really fun to do.

As I said earlier, this project was pretty challenging for me. For example, I had to cut out fabric pieces, which was easy for some but wasn’t so easy for other pieces, and I also had to sew some pieces on the back, without the thread showing on the front. Those are just some of the challenges of this project, but working with and around the challenges was fun, and every time I overcame a challenge, I get a satisfying feeling of success.

A tip and reminder I would like to give to whoever will be doing this project is to sew the battery holder and the LED light on before sewing the actual design. I say this because it would be easier to hide the thread and LED since you can simply hide it behind the fabric pieces, instead of burying it in the back fabric piece.

Adding on to this project, I would really like to learn how to add sensors to control the LED, as I think that using the switch on the battery holder is probably the simplest and most easy way. I would also like to learn how I can add more than one LED, making the project way more interesting that it is right now with only one LED.

(Images not working)

Translation by Google

The Deathly Revolution

April 19, 2021 / wanhin.liu / Comments Off

I am a nurse, a third estate citizen of Paris, a friend to many, a loyal follower of the king, a hater of the taxes we have to pay. I am what I am. My name is Absolon, I lived through what is called the French Revolution, and I welcome you to read my journal that I wrote about myself as I lived through it.

Many things have changed during the revolution. For example, it ended the Ancien Régime, meaning there were no more three estates, also meaning there were no more unequal tax charge, and just like the Russian revolution, it took power from the churches. But while some things have changed, some have still stayed the same. Even though the revolution changed France from monarchy to dictatorship, it was still absolute, supreme power.

"Wan Hin is always awesome"- Wan Hin