Week16. Applications and Implications
1. Assignment and Result
| GROUP ASSIGNMENT | THE ANSWER |
|---|---|
| NONE | - |
| INDIVIDUAL ASSIGNMENT | THE ANSWER |
|---|---|
| Propose a final project masterpiece that integrates the range of units covered, answering: |
During this week I have defined in more detail my final project as following. |
| - What will it do? | It has a function to read a member's card and turn on/off the machine based on the Mifare card’s data, and It can record the operation time. |
| - Who's done what beforehand? | There have been several RFID device. - FABMAN - Multi function AI punch the clock base on M5Stack, by vany5921 - Safe-Entry Access Machine by Team SEAM - Tool management system, by Fab Academy 2017 student There was a service with a similar idea called FABMAN, but I could not find the same idea for an individual project. |
| - What will you design? | - Body of Device - The 2D design of member's card (Mifare card) - Board with XIAO ESP32C3, and other board |
| - What materials and components will be used? - Where will come from? |
Refer to below "2.BOM" |
| - How much will they cost? | About ¥24,000 (JPY), about the details, refer to below "2.BOM". Prioritizing reliability, I used a high-brand switching power supply (RWS50B-5) and AC inlet (FN281-4-06), but I think a lower-priced power supply would have reduced the total cost by about ¥5000 JPY. |
| - What parts and systems will be made? | Create the outbox with a 3D printer and laser cutting. Make the board by myself. Power is supplied from the USB terminal on the control integrated circuit board, and the 5V terminal on the XIAO ESP32C3 board is used as an output power supply for relay operation rather than as an input; reads the UID on the Mifare card with RFID2 and operates the LCD, audio, and SSR according to the status of registered users, unregistered users, and expiration date. |
| - What processes will be used? | Answer by below "3" |
| - What questions need to be answered? | In performing a series of flows, does the machine ensure idempotency? |
| - How will it be evaluated? | Read the UID of Mifare card with RFID2 and check if LCD, voice and SSR work correctly according to registered/non-registered and expiration date. |
| Your project should incorporate 2D and 3D design, - additive and subtractive fabrication processes, - electronics design and production, - embedded microcontroller interfacing and programming, - system integration and packaging |
Done -> The details in Final project development |
| Where possible, you should make rather than buy the parts of your project | Done |
| Projects can be separate or joint, but need to show individual mastery of the skills, and be independently operable | - |
2. BOM
2-1) AC and DC power supply related
Total: ¥15,730 (JPY)
| Part name | Q'ty | Unit Price | Sub Total | Where to buy |
|---|---|---|---|---|
| Solid State Module (SSR-40DA) |
1 | ¥1,000 | ¥1,000 | Akizuki |
| DC Fan 5V | 1 | ¥280 | ¥280 | Akizuki |
| Power Supply (RWS50B-5) | 1 | ¥5,600 | ¥5,600 | Digikey |
| Ac inlet (FN281-4-06) | 1 | ¥4,000 | ¥4,000 | Digikey |
| AC code 3pin | 1 | ¥900 | ¥900 | Monotarou |
| Wall outlet | 1 | ¥600 | ¥600 | Monotarou |
| Wifi Antenna 2.4GHz 5.8G | 1 set | ¥250 | ¥250 | Amazon |
| USB 1.0cable typeC | 1 | ¥100 | ¥100 | 100 yen shop |
| USB 3.0cable typeA | 1 | ¥900 | ¥900 | Amazon |
| USB Extension Cable | 2 | ¥900 | ¥1,800 | Amazon |
| Wire (as needed) | - | ¥300 | ¥300 | Amazon |
NOTE:
- Prioritizing reliability, a high-brand switching power supply (RWS50B-5) and AC inlet (FN281-4-06) were used, but I think a low-cost power supply could have been procured for half the price.
- RFID2: Select this product that are not regulated by Japanese radio laws.
2-2) Electronics production
Main Board
Total: ¥1,774 (JPY)
| Parts | Quantity | Unit price | Sub Total | Where to buy |
|---|---|---|---|---|
| Proto Board FR1 | 1/3 board | ¥1,600 | ¥534 | DigiKey |
| Seeed Studio XIAO ESP32C3 | 1 | ¥940 | ¥940 | Akizuki |
| PinHeader_1x04_P2.54mm_Vertical_SMD | 3 | ¥30 | ¥90 | Akizuki |
| PinHeader_1x02_P2.54mm_Vertical_SMD | 1 | ¥30 | ¥30 | Akizuki |
| Photocoupler TLP293 | 1 | ¥30 | ¥30 | Akizuki |
| LED 1206 | 1 | ¥20 | ¥20 | Akizuki |
| Switch Buttom Omron B3SN | 1 | ¥20 | ¥20 | Akizuki |
| Resistor 1k ohm | 1 | ¥20 | ¥20 | DigiKey |
| Resistor 470 ohm | 1 | ¥50 | ¥50 | DigiKey |
| Resistor 0 ohm | 2 | ¥20 | ¥40 | DigiKey |
Sound board
Total: ¥2,170 (JPY)
| Parts | Quantity | Unit price | Sub Total | Where to buy |
|---|---|---|---|---|
| Proto Board FR1 | 1/4 board | ¥1,600 | ¥400 | DigiKey |
| DFplayer mini(DFR0299) | 1 | ¥810 | ¥810 | DigiKey |
| Speaker unit (8Ω 0.5W) | 1 | ¥120 | ¥120 | Akizuki |
| PinHeader_1x04_P2.54mm_Vertical | 1 | ¥30 | ¥30 | Akizuki |
| PinHeader_1x02_P2.54mm_Vertical | 1 | ¥30 | ¥30 | Akizuki |
| SD card (32GB) | 1 | ¥780 | ¥780 | Amazon |
NOTE: I think SD card could have been less expensive as I didn't need 32GB
Card reader /LCD connect board
Total: ¥2,055 (JPY)
| Parts | Quantity | Unit price | Sub Total | Where to buy |
|---|---|---|---|---|
| Proto Board FR1 | 1/4 board | ¥1,600 | ¥400 | DigiKey |
| RFID2 (U031-B) | 1 | ¥679 | ¥679 | DigiKey |
| LCD Module(AE-AQM1602A(KIT)) | 1 | ¥780 | ¥780 | Akizuki |
| PinHeader_1x04_P2.54mm_Vertical | 3 | ¥30 | ¥90 | Akizuki |
| Mifare card | 1 | ¥106 | ¥106 | Amazon |
2-3) Body parts
Total: ¥3.952 (JPY)
| Part name | Q'ty | Unit Price | Sub Total | Where to buy |
|---|---|---|---|---|
| Filament (PLA) Polyterra PLA 1.75mm | 0.80 | ¥3,300 (1kg) | ¥2,640 | Polymaker |
| Filament (ABS+) eSUN 1.75mm | 0.05 | ¥2,400 (1kg) | ¥120 | Amazon |
| Acrylic Sheet t2x160x180 | 1 | ¥270 d | ¥270 | Amazon |
| Insert Nuts M3x4mm x L 4mm | 46 | ¥10 | ¥460 | Amazon |
| Insert Nuts M4x6mm x L 6mm | 10 | ¥30 | ¥300 | Amazon |
| Screw M3x6 | 16 | ¥3 | ¥48 | Misumi |
| Screw M3x8 | 4 | ¥3 | ¥12 | Misumi |
| Screw M3x10 | 12 | ¥3 | ¥36 | Misumi |
| Screw M3x12 | 2 | ¥3 | ¥6 | Misumi |
| Screw M3x15 | 10 | ¥3 | ¥30 | Misumi |
| Screw M3x16 | 2 | ¥3 | ¥6 | Misumi |
| Screw M4x15 | 2 | ¥3 | ¥6 | Misumi |
| Washer M3 | 4 | ¥3 | ¥12 | Misumi |
| Washer M4 | 2 | ¥3 | ¥6 | Misumi |
- NOTE:
- Filaments were converted to actual amount used.
- ABS is used only for mounts where parts tend to generate heat. (ex: SSR mount base)
3. What parts and systems will be made? / What processes will be used?
| topic | Plan |
|---|---|
| 2D design | Members' card design |
| 3D design | Outbox and feed design |
| Subtractive - Laser cutting | A part of outbox |
| Subtractive - CNC milling | Board and feet milling |
| Additive - 3D printing | Outbox |
| Electronics Design | Design a XIAO ESP32 board |
| Embedded Programming | Embedded Programming with XIAO ESP32 board |
| molding and casting | Create feet |
| output devices | DFplayer & speaker, LCD, Fan |
| input devices | RFID2 |
| networking and communications | Networking with XIAO ESP32 board |
4. My thought
This week seems easy, but it is not, too. This was the week to identify my final project. I had to edit the BOM and my article a lot.