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What will it do?
**Goal is to create a kitchen appliance that can wash and dry greens and other vegetables via a pre set cycle both saving time (and potentially water)**
**Who's done what beforehand?**
So far I only found limited similar project within the fab academy community and a few outside.
Fab Academy projects
1) [here](https://fab.cba.mit.edu/classes/863.13/people/jfduval/final.html)
Outside of fab academy:
1. I like the automated spinning salad dryer that the You Tuber The Practical Engineer designed
<iframe width="560" height="315" src="https://www.youtube.com/embed/hfGojmXrGfc" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
I think that he has a good spinner design and using this approach can allow me to allow users to put in
any colander they wish.
2. Commercial solution are mainly ultrasonic, manual or focused on drying (salad spinners)
[Here](https://www.amazon.com/dp/B0BCVW1DPR?pd_rd_i=B0BCVW1DPR&pf_rd_p=b000e0a0-9e93-480f-bf78-a83c8136dfcb&pf_rd_r=SXKKN0NRSWW8SSBCYA6G&pd_rd_wg=yaMUE&pd_rd_w=RtpxZ&pd_rd_r=91c7961a-a2a2-4e3e-a877-a44317f81a64) are some examples
**What will you design?**
I will design all aspect of the project with 4 major components
1) The box / frame of the machine and water reservoir
2) The spinning mechanism
3) The machine lid and water dispensing mechanism
4) Control board electronics - main board, pump breakout board, motor breakout board, button breakout board
**What materials and components will be used?**
The main materials are
1) T Rails + Plexiglass
2) 3D print filament - TPU, PLA and XTC3D finishing resin
3) Electronic components and PCB boards, motor/ESC and pump
4) Molding plastic / rubber
Below is a full BOM
**Where will come from?**
Most are either provided by lab, purchased from Digi key or Amazon
**How much will they cost?**
**What parts and systems will be made?**
Washbasin/box/frame, drain/skirt, spinning plate, lid, water reservoir, electronics boards.
Only things not made are:
Motor + ESC, pump, salad spinner bowl, water tube, sprinkler head, power supply
**What processes will be used?**
- 3D print
- Laser cutting
- PCB Board milling
- Molding and casting / resin
- System integration
**What questions need to be answered?**
- Spinning mechanism - chain/band vs. direct drive (already answered)
- Frame materials - (already answered - TRail )
- Water drainage approach - TPU printed sloped base
**How will it be evaluated?**
- does it wash and clean greens / veggies
**Under what license is the project**
The project is published under the
[Creative Commons Attribution-NonCommercial 4.0 International License](https://creativecommons.org/licenses/by-nc/4.0/)
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## Project description
{: style="height:360px;width:720px"}
{: style="height:300px;width:300px"}
Here is a first cut at the base:
**There are 4 main parts to the appliance**
1. Water reservoir
2. Main container (Wash basin)- base is designed to have a gravity fed drain
3. Lid with build in sprinkler
4. Vegetable holding bowel that sites in the Wash basin and spins to dry
**There are 2 Motor/pump used**
1. Water pump to move water from reservoir to sprinkler head
2. Motor to spin Vegetable bowel
**There are 2 potential sensors**
1. Lid sensor - stop operation if lid is open mid cycle
2. Water level sensor to alert if reservoir is empty
**Microcontroller usage**
1. Control sequencing of pumps / motors
2. Interrupt operation if sensor is triggered
3. Manage GUI
**GUI**
- Wash only
- Dry only
- Wash/dry
Here is a another view of the merging design
| Weekly topics | Parts |
| ----------- | ----------- |
| Computer controlled cutting | Outbox / wash basin holder |
| Electronics production | Controller, motor ESC, Sensors |
| 3D Scanning and printing | Motor housing, water connectors, sprinkler head, sproket/chain for motor drive|
| Electronics design | sensors / controller board / Motor ESC |
| Computer controlled machining | Controller board |
| Embedded programming | Cycle design / User input |
| Molding and casting | Drain / Spinning plate |
| Input devices | GUI buttons / Sensors |
| Output devices | Screen |
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