Overall, I had a great time in this Unit. The project of this unit was pretty interesting, and not what I expected. It was creating our own useless machine. At first, I thought it was ironic as robotics is supposed to be learning to make useful machines, and not “useless” ones. Later on, I found out that I gained a lot from this unit. I learned and developed many new skills such as drawing models, getting more familiar with fusion 360, laser cutting, and solving problems in general.
My favorite part was, of course building the machine. But the design process was also very enjoyable. It truly feels good to be able to design our own linkages instead of having one planned for us by the teacher. Although there were a lot of thinking to do and decisions to make, which made me annoyed at times, I was able to keep up my enthusiasm and stayed focused throughout the time I’ve been working on this project.
I designed my project to be a simple two-bar linkage that is programmed to hit the switch and turn it off right after I flick it. In other words, a self shutting down machine. My design is simple to understand, I had a stick that was stabilized, and it is around 5cm parallel to the right from the stick on the motor. For the project to work, I had a third stick that was connected to both of the sticks. Therefore when the motor moves, the stick parallel to it will move as well. If angled and planned correctly, there will be enough torque for it to hit the switch and shut itself down. (Which I did not do too well at)
As you can see, my machine does not have enough torque to flick the switch.
Because of reasons such as a few miscalculations of height, tightness or distance of the switch, my machine did not work perfectly how I wanted it to work. Instead, there were some errors. I thought about the problem and wanted to restart, but I did not have enough time to redo the entire thing. Thus I decided to make adjustments little by little. Throughout this project, what was most challenging was not a specific problem that troubled me the most, but consecutive problems that I had to deal with. In the planning/modeling stage, I dealt with my problems by spending lots of time outside class messing around in fusion 360, making adjustments. I also asked my classmates and the teacher when I was really stuck. During the building stage, there were more issues that I was not familiar with, like problems in the motherboard and stuck solder. To solve this problem, I asked for Mr.Beatty to help me. Finally, I finished my project with nearly no problems.
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Robotics Blog Post

February 13, 2019

Decompose

Define

Create

Create a new blog post that includes:

-Inspiration(images you used)

-How you decomposed the shape simpler parts

-At least two tools that you used in fustin 360 and what how it helped your design

-An image of where you are now

 

These are the images that inspired me to make my balancing jet. At first, I wanted to create a rocket because it is simple and easy to make. Just bam, there you go, a rocket. It is a very decent choice with minimal trouble. However, after thinking a little more, I realized that a rocket isn’t what I wanted to make. As it is too decent, it wouldn’t be satisfying when I finish the project. So I decided to change it to a jet. In my opinion, jets are very cool, as their shapes and structures are so smooth. Therefore, modeling a jet was my final decision.

 

I started modeling by making a horizontal cone. Which is the body of the jet. As I continued modeling, I pulled and added sides to create different parts of the body. I made the head and the end first as it is the front and the back part of the cone. So it is easy to make. I had trouble with making the head and the beak round. This was because there was always errors when I fill in the holes. After making the beak and the end, I added the wings. Making the wings were the most challenging part of this project. Since i am not too familiar with using Fusion 360, I often experiment with the tools and make random changes to my jet. By the time i have realized that I went too far, there were already too many errors. When I pressed finish form to check my project, it spams me with errors and the application crashes. The application was lagging really badly for me. Basically, at that point, the software would crash whenever I add even a little bit of detail. I asked Mr. Beatty about this and he suggested me to delete a part of my work and redoing it, it would be much easier than fixing all the small details of the mistakes I have made. I also learned that when making more different parts of my project, I should add more sides so there is more detail that I can fix. I did not know that, so when changing a detail in one place, it affects the whole shape. More sides equal to more details, and that will help me make my project look better. However, the more sides I add, the laggier the software will be, therefore I have to be considerative when adding sides.

 

One of my favorite tools in Fusion 360 is the wield edges. This is because I use it a lot. It is used to connect two points, and for a beginner like me, I like to break down the parts I have to make, and then join them together. Of course, there are other tools that can do this job as well, like bridging.  I like this more because bridging often fails to work for me, and this is more straight forward. Furthermore, wield edges also comes in handy when fixing an error. When we delete the sides that are causing the error, it will create a hole. You can easily fill in the hole, or even modify it by connecting the points.

My second favorite tool is symmetry. The reason for this is pretty obvious. Symmetry helps avoid all sorts of trouble. When I have this tool turned on, it helps by not making the shape look weird when I work on one side of it, it will copy what I did, and copies it perfectly onto the other side. This tool helps saves a lot of time and trouble. Without this, my project might be uneven, and also i have to spend double the time to complete my project.

 

This is where I am right now. I am basically done with my project, but I still have to repolish the wings to make them look better. Also, I have to make the beak and end more round to make it look better.

 

 

This is my finalized project. I sharpened the wings and shortened the back tail. What I need to do right now, is to make a spline to connect my jet and a ball for completing the balancing project. I need to make the spline, ball, and a hole on top of my jet in order for me to complete the final task.

 

 

 

This was the work I did in the first class on Wednesday and Tuesday. I gathered all the materials needed to make this product. It was challenging to gather the materials as some of them were not working, especially the battery. At first, I used two small batteries placed in a battery box, but there were a lot of problems, also they were not strong enough. Therefore I was trying different kinds of battery until I found this big one which is strong and suitable for my project.
Since I was sick on Friday, I did not go to class.