Project Development Blog

In this blog, I will be documenting the project development for this module.

1. Our team's Chemical Device

The objective of this device is to prevent inhalation of toxic fumes during soldering which can cause occupational asthma or worsen existing asthmatic conditions😷; as well as cause eye and respiratory tract irritation.👀🫁💨

Students and lecturers👩‍🎓🧑‍🏫 are commonly exposed to these toxic gas when they do soldering during their practical lessons or projects. In order to reduce the toxicity of the fumes, we decided to create a fume extractor that utilizes a fan using negative draft to pull fumes and dust particles in to a contained filtration system. This process removes hazardous particles from the air.☢️⚠️

The front side of the prototype is the sensor with a "window" at the side. The purpose of the "window" is to absorb the soldering fumes and thus the fan will blow it out into the atmosphere after filtering it. 🌬️

On the back of the device, there is a fan that has a filter installed on top of it to filter out the soldering fumes particles. It is angled in such a way as to prevent the fumes from blowing to any individual that is facing in front of the fan.

At the side of it is the wirings of the servo, sensor, and Arduino board that is covered with a transparent cover of our team logo.

The purpose of the servo is an indication to let the users know that toxic fumes are being detected hence the device is operating.

The flag at the side is attached to the servo. When it senses fumes, the fan will turn on and the flag will raise up. However, when there are no fumes, the fan is off and the flag is raised down.🚩🚩

By using this chemical device, it will reduce the number of hazards and dangers that students and lecturers encounter while doing these tasks.. As such, this device promotes workplace safety and health(WSH).

Sketch off the chemical device:

2. Team Planning, allocation, and execution

Name	Valarie	Asraf	Insyirah	Eshvin
Roles	CEO	COO	CFO	CSO
Allocated Tasks	Fabrication and coding (Combine both code)	Design of prototype and coding (Exhaust Fan & Servo)	Buying of material, assembly of prototype	Clean-up of fabrication and design of logo and flag

BOM (BILL OF MATERIALS):

Gantt chart:

Link to excel file: https://1drv.ms/x/s!AhjPYx8EpT1vuSJVsVF4Gsz8rxl_?e=zbUfpT

3. Design and Build Process

In this section, I will provide documentation of the design and build process.

Part 1. Design of prototype and coding (Exhaust Fan & Servo) (Done by Asraf)

Here's the link for Asraf's blog: https://xsrafx.blogspot.com/2022/10/cp5070-2022-2b05-group-3-asraf-blog-7.html

Part 2. Fabrication and coding (Combine both code) (Done by Valarie)

Here's the link for Valarie's blog: https://valeriegoh32.wixsite.com/cp5070/post/blog-6-project-development

Part 3. Buying of material, assembly of prototype (Done by Me)

Since i was tasked to purchase the materials, I first started sourcing out for them through online platforms such as Lazada, Shoppe, etc. I did so as I thought that it would be a cheaper and more convenient method to purchase it. 👩🏻‍💻However, I then found out that Sim Lim Tower is known as a paradise for tech and IT lovers🤓. Sim Lim Tower has a large variety of materials I needed to buy and it was just the right place.🤩🤩

As stated in the BOM, I needed to purchase materials such as a 12V DC FAN, Fan guard with filter, and screw & nut.

As for the filter, we chose to use a sponge filter because it is a better filter as compared to a paper filter. The rising fumes draw small, harmful particles through the sponge walls. Additionally, sponge filter is cheap, easily accessible, and easy to clean.

This is the fan guard, it is used to protect users from accidental contact with the spinning fan blades. The filter is stored in it so that the harmful particles would be filtered before exiting the fume extractor.

This is a DC fan that is rated 12V and has a dimension of 80X80X10mm. We chose this fan because it requires a low voltage and its dimension is perfect for our prototype.

These are the M4 screws which are going to be used to screw the fan to the 3d printed frame.

This is the receipt of the purchase: (I bought 2 of the DC fan and fan guard just in case , so that i do not have to travel there again. The battert holder, latch push switch and motor shield is not ours , i purchased it for my friend)

Part 4. Clean-up of fabrication and design of logo and flag (Done by Eshvin)

Here's the link for Eshvin's blog : https://eshvinkaur3227.wixsite.com/website/post/project-development-blog-entry

Part 5. Integration of all parts and electronics (done by everyone)

A video of me and eshvin sanding of the device:

The final frame:

The Design Process; the assembly of all parts could be seen in the vid as well:

Hero shot of our device:

How it works:

For a quick test, we used alchohol swab as it contains toxic vapours. When the sensor detects toxic gas, the flag will raise and the fan will start spinning. If soldering was conducted, the fumes are more obvious, the fan will draw the fumes in and it will pass through the filter and exit as non-harmful gas.

4.Problems and solutions

5.Project Design Files as downloadable files

In this section, I will provide all the design files (Fusion360 files, .dxf files, .stl files, Arduino

programs downloadable files:

https://drive.google.com/drive/folders/18ayVXbOHuY6dWSpjzFZQDSnYi_2IlEjg

6. Below is my Learning Reflection on the overall Project Development.

Overall, this project was quite a tedious but meaningful one. I would definitely would not have come this far without my teammates especially Valarie and Asraf who have done so much for our team💙💛. They really are very skillful in using fusion360 and coding , I wish to be as skilful as them one day🤩. We started off with a different idea for this project but ended up changing mid-way due to various reasons and thought that this would be a better idea. The first few weeks of creating this device were okay however, as we come to the end of the semester, it got so rushed due to the time constraints we had because of exams and stuff🤯🤯. Despite the problems we faced along the way, thankfully, we managed to create and execute the device we wanted to do successfully.😎

One thing I learned from this project is that plan your idea wisely and manage your time well⏰. I regret that I didn't quite manage my time well😔. If I would have managed my time well from the start, I definitely could have contributed more input😩.

This project also made me realised that I should not be too reliant on my friends, they have always been doing so much and not complaining🫡. I planned to improve myself and by doing so, I plan to improve my skills in fusion360 and coding so that I can contribute more to my FYP group🙌🏻. How do I improve on that? I would watch youtube videos on how to use fusion360 and try it out myself during the holidays. As for coding, I would watch videos and use tinkercad as a platform as I used it before and that platform was quite easy to use🤓.

Enjoy this short skit made by my group!

ANDDDD THATS A WRAP FOR CPDD WOOHOOOOO GOODBYE YALL I HOPE U ENJOYED MY BLOG !🥳🥳🥳

ITS US 4vengers SIGNING OUTTT!!🥳✌🏻🕊️