System Integration
Assignments
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Individual Assignment
Enclosure design
Firstly, the picture below is a more modern butterlamp case found in bhutanese homes.
This is not my final design for my enclosure, but an iteration.
Here are some shots of how it currently looks like
This is where I plan to add the NTC thermistor module.
The first image below is where I plan to keep my circuit board, DF player and my speaker with the resonance chamber. Which will be in the base. The second image is the press fits I encoporated in my design that I learned in week 2. I have it in the structure which will have my glass.
This is the weirdest idea I have ever had, to join the two parts of the structure that will hold the glass, I have added another pressfit which looks a bit round. I plan to color it to depict a prayer wheel. So, there will be mini prayer wheels as the connectors between the two separate structures that are suppose to be one structure butfor my own convinience I divided it into two sections. I am not sure I f I will keep this idea.
Overall I am not satisfied with my enclosure design which I would like to focus more.
After my first iteration I started designing again, but this time, considering the dimensions very well, and ahering to the errors I found on my first iteration. This time with the help of my friends and my instructors, Sir Anith and Sir Rico, I made changes in the way it looks and tried making it more fun rather than the typical butter lamp case.
Below is an image my friends helped me to create, by giving me suggestions and ideas and identifying potential errors in my design.
New Enclosure
Structure for ntc and prayer wheel pivot
The structure acts as a 2nd piece for the glass structure since it is also a lid. The structure contains two parts one hollow block which holds the NTC thermistore module, and the other which goes below the hollow block only allowing the thermistor to be out in the heat. I have also added an adjustable feature to adjust when the thermistor is far away or very close. It allows users to add different sizes of butterlamp and adjust the placement for the NTC thermistor module. For now it only has 3 options to adjust to. There is also a place for the wires beside the thermistor and through the glass structure, allowing a very neat and organized finish product. I have decided to 3D print it for now but it will be certain when I test it with a real butterlampand confirm its fire resistance.
NTC holder
The NTC holder is a pressfit design which allows users to adjust the placement of the NTC thermistor module with 3 slots to add a piece of rubber to strengthen the slot the user chose. I decided to add an adjustable feature here after a feedback on having the NTC thermistor's placing adjustable with the size of the butter placed.I discovered that it is essential that I place the NTC thermistor module not too close or too far and with progress in my final project I have learned that I should place it 11 cm away from the flame. I have decided to 3D printing it for now but I will only be certain when I test it with a butterlamp placed below to check its fire resistance.
Hinge
This is a hinge I designed during week 3. I chose this because it is a very simple design, it can be screwed easily, it works and most importantly, I learned how to design it. I will be 3D printing it.
Base
My base is hollow, to place my circuit board, DF player and my speaker with its resonance chamber. I have decided to either laser printing it or using the CNC machine. I will be adding a feature similiar to the battery boxof a toy.
Glass structure case
To place the glasses in the struture I have decided to make slots with the dimensions of the glass I am planning on using. I will also be using a pressfit feature to fix it to the base. I will be using the laser printer to print in batches and stick them together.
Labelled diagram on how each component is going to be fabricated
Fabricating hinge and a NTC thermistor module holder
I printed the ntc holder before I decided it was going to be adjustable. But indeed it was a good choice.
I printed my hinges as well to actually confirm whether it will work or I will have to design something else. But it works!