Week 17: Applications and implications; Project development
Individual Assignment: Plan a final project masterpiece that integrates the range of units covered, answering the questions and keeping in mind that
- Your project should incorporate 2D and 3D design, additive and subtractive fabrication processes, electronics design and production, embedded microcontroller design, interfacing, and programming, system integration and packaging
- Where possible, you should make rather than buy the parts of your project
- Projects can be separate or joint, but need to show individual mastery of the skills, and be independently operable
What will it do?
Short answer: glorified chocolate dispenser
Long answer: the project and duplicates of it will be a limited interface between myself and various places of work and play around the world, especially at the academy (IRA) in Kazakhstan. Chocolate afficianados know that Kazakh chocolate is prized for its taste and purity. This project will allow students and friends to access small Kazakh chocolates on demand through keycards, they will also have a personalised greeting on the integrated OLED display.
If not in the first iteration, then hopefully in the next, they may also receive a personalised audio message, and I would also be informed by Telegram when someone has accessed a chocolate. It will make me happy to know that someone nice is enjoying something nice, and if the project is durable, and I have someone trustyworthy to restock, then I may continually get these nice messages from various locales around the planet.
Who's done what beforehand?
Nobody has made this project before, and that's the point. Of course there are vending machines, and of course people use keycards. There are products like Ring the video doorbell and remote access of hotel rooms that all bear some semblance or common features, but this project is a unique combination, inspired by international life and travel, fine chocolate, and good people.
What sources will you use?
By far the biggest source of information will be Sheikh Saheen. Although he is young, he has a deep knowledge of electronics all topics of Fab Academy. Of course our friend perplexity.ai will be of great assistance, as well as various projects and tutorials on the different devices that will be incorporated into the project.
What will you design?
We'll need to design a few things, as well as the integration of those things:
- Candy dispenser mechanism (Fusion 360, motor/gears)
- Structural form of head - 3D printed (Fusion 360)
- Board with ESP32-C3, connected to devices (Kicad)
What materials and components will be used? Where will they come from? How much?
As we'll make a few copies of the project, we must carefully calculate the cost as well as keep that cost to a minimum. Note that while we purchase the components in different countries, we calculate the cost in dollars.
- XIAO ESP32-C3 / Kerala / $6
- RC522 Module / Kazakhstan / $1.50
- Hall Effect Sensor / Kerala / $0.50
- VEX Robotics 393 Motor / Kazakhstan / $4
- XH-M401 Buck Converter / Kerala / $2
- Filament for 3D printer (100g) / Kazakhstan / $2
- Copper plate for board / Kerala / $1
Total cost: $17
What parts and systems will be made?
We plan to make what we designed:
- Candy dispenser mechanism - Bambu Lab A1 Mini
- Structural form of head - Bambu Lab A1 Mini
- Board with ESP32-C3, connected to devices - Rolland Milling Machine
What processes will be used?
- Spiral development
- Design Cycle
What questions need to be answered?
N/A
How will it be evaluated?
- Myself
- Saheen
- Pablo
- Dr. Neil
- Community
What tasks have been completed?
Main part of design of each part is done (but additional work and refinement needed)
- Candy dispenser mechanism
- Structural form of head
- Board with ESP32-C3, connected to devices
What tasks remain?
- producing the board
- programming
- documentation like slide and video
What has worked? What hasn't
Bambu Lab A1 Mini has worked amazingly well, and we are familiar with its operation. Designing part of the head from a laser-cutter has not worked out because it will be block-like and creepy. But that is fine and actually will be more professional to produce the head casing through 3D-printing.
What questions need to be resolved?
Will I be able to produce a board in time to bring it to Kazakhstan so that I may continue work?
What will happen when?
- December 11: leave Kerala
- December 11-31: complete the project in Kazakhstan
- January 1-17: work & travel for IRA
- January 17-21: back to Kerala and prepare to present
What have you learned?
- Fusion 360
- 3D printing
- PCB design
- (re)learning how to focus
- learning to do for understanding not completion
- Too much