1. Our team Chemical Device
Egg boiler. This chemical device will help you to cook a perfect half-boiled egg. The egg will not be encountered undercooked, overcooked and crackled eggshell which causes the albumen to flow out in the pot.
2. Team Planning, allocation, and
execution
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Project
Title: |
Half-Boiled
Egg Boiler |
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Team members: |
Zelene, Zhi
Wei, Ryan Andrew, Uzair |
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Created by: |
Everyone |
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Date created: |
17/2/2022 |
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BILL OF MATERIALS (BOM) |
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No |
Description of item |
quantity |
quantity unit |
unit price |
Total Cost |
Available at W319 Lab or
FabLab? (Y/N) |
|
1 |
Maker Uno
Kit |
1 |
NIL |
$19.64 |
$19.64 |
No |
|
2 |
Acrylic
sheets |
1 |
210x297x3mm |
$9.32 |
$9.32 |
Yes |
|
3 |
PLA Filament
for 3D printer |
1 |
kg |
16.40 |
16.40 |
Yes |
|
4 |
Plastic
Container (Able to resist boiling temperature) |
1 |
1.7L |
$2.00 |
$2.00 |
No |
|
Grand Total Cost: |
$47.36 |
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Actual Gantt Chart:
Link: Gantt Chart G3
1. Access the Tinkercad website to create my own virtual circuit.
2. At the right panel, drag a breadboard and an Arduino Board onto the work plane.
3. Then, Drag a servo onto the work plane from the components panel.
4. Connect the green colour wire to pin 2, then connect the red wire to 5V and last connect the black wire to GND as shown in the diagram above.
- Select the grey notation block and drag out the comment block.
- Then, type “sweep the servo from 0 to 180 degrees in steps of 1 degree”.
- Click on the control category and drag out a "count" block to the right empty section.
- Set the count as up then by 1, then set the variables with the name of “pos”. Then, set from 0 degrees to 90 degrees.
- Drag a comment block from the notation category and type out the short description for the next step which is to tell the servo to go to the position in variable “pos”.
- Drag the rotate servo block from the output category. Set the pin as pin 2 and then to “pos” degrees.
- Then, comment on the next step which is to wait 15ms for the servo to reach the position.
- Drag the wait block from the control category then set it as 330s (5.5 mins)
- Repeat the (iii) to (vii) steps by changing the degree from 90 to 180 degrees. Then, change the name of “pos” to “i”.
- Click on the start simulation button. The servo will turn from 0 to 90 degrees at first. After 5.5 mins, it will turn from 90 to 180 degrees.
- Connect all the components with the physical Arduino Uno Board by following the virtual circuit sketch.
- After that, connect the Uno board to the laptop by plugging in the USB cable.
- Copy the code and then open the Arduino IDE app. Then, paste that code into an empty Arduino sketch. Click the verify icon and then the upload icon.
a. 3D Printing Problems
The main container takes 1 day printing time. And we realized that PLA filament is not waterproof and water-resistant. Hence, the design had to be redone. In addition, the latch did not print correctly and caused the pin does not fit.
Solution for 3D printing
We bought a 1.7 L container instead of 3D printing. For the latch, we improvised and revise the design through CAD.
b. Assembly
The platform was troublesome and the button on the Arduino board is hard to press due to the button being too small.
Solution for assembly
The platform was intended to be 3D Printed. However, we realised that laser-cutting will help us to save time.
c. Design Flaws
Water-tightness is not achievable. Water could seep into ice and melt and it will not achieve our intention which is to allow the egg immersed into cold water.
Solution for design flaws
Swapped the places of the boiling and cooling chamber. Made the ice move into the water instead.
5. Project Design Files as downloadable files
All files are included in this link: Files
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