18. applications and implications¶
Individual assignment overview:¶
Individual Assignment:
Propose a final project masterpiece that intergrates the range of units covered, answering:
What will it do?
Who has done what beforehand?
What will you design?
What materials and components will be used?
where will come from?
How much will they cost?
What parts and systems will be made?
What processes will be used?.
What questions need to be answered?.
How will it be evaluated?
The final project masterpiece should incorporate:
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2D and 3D design
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additive and subtractive fabrication processes
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electronics design and production
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microcontroller interfacing and programming
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system integration and packaging
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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.
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This week’s assignment was to propose a final project masterpiece that intergrates the range of units covered, by anwering the following questions.
What will it do?¶
- Water gardens as well as spray pesticides. The system will be intelligent enough to shut down the pump once the moisture threshhold has been reached.
Who has done what beforehand?¶
The traditional watering Can are available, and the Pestcide sprayer are also available.
People have been using these methods for decades.
In my reseach I found some other people had realized this concept and here is the link
What will you design¶
- I will design and produce two baords for input and output.
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I will incooporate a moisture sensor for moisture reading.
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2D and 3D modeling of an electronics box.
- 2D and 3D modeling of a solar stand.
I will modify the Sprayer box to accomodate the pump.
- I will also design a Label which carries the project name.
What materials and components will be used?¶
The following are materials and components to be used for my final project.
- Plastic canister.
- Plywood.
- filament.
- Solar panel.
- 12V dc water pump.
- RP2040 microcontroller, resitors, mosfet, regulator, capacitor, and connectors.
Where will they come from?¶
Regarding where the material will come from I can say about 90% will come from the Lab and some will be bought from different market.
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Things like plywood and the Canister will come from the local market.
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Materials and components like the Filament, RP2040 microcontroller, resitors, mosfet, regulator, capacitor, and connectors will come from the lab.
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The water pump and the solar panel I found them on Amazon.
How much will they cost?¶
Below is the cost analysis table describing the cost per component and the total cost of all.
| Description | Quantity | Source | Cost | link |
|---|---|---|---|---|
| 12V 8W dc water pump | 1 | Amazon | $ 0.72 | Link |
| moisture sensor | 1 | Amazon | US$ 0.32 | Link |
| 10W Solar panel | 1 | Amazon | $19 | Link |
| Hand sprayer | 1 | Amazon | $12 | Link |
| XIAO RP2040 | 2 | Amazon | $18 | Link |
| Toggle switch | 1 | Amazon | $0.63 | Link |
| plywood 8.5mm | 1/4 | local | $10 | |
| 3D PLA filament | 200g | Amazon | $5 | Link |
| 4.99 Kohm Resistor 1206 | 5 | DIGI-KEY | $0.160 | Link |
| 0 ohm Resistor 1206 | 6 | DIGI-KEY | $0.12 | Link |
| 1x6 Female PinHeader THT | 1 | Amazon | $0.158 | Link |
| 1x6 Male PinHeader THT | 2 | Amazon | $0.2528 | Link |
| PTH socket, SMT | 3 | DIGI-KEY | $0.76 | Link |
| CONN HEADER SMD | 1 | DIGI-KEY | $ 0.4 | Link |
| N-Channel MOSFET, TO-252 | 1 | Amazon | US$ 0.08 | Link |
| CAP CER 1uF 1206 50V | 1 | elektronik | US$ 0.05 | Link |
| IC REG LINEAR 5V 1A SOT223 | 1 | DIGI-KEY | US$ 0.08 | Link |
| Total = $75 |
What parts and systems will be made?¶
- PCB controller boards for the electronics.
- Electronics enclosure for the interface.
A fixture to hold the electronics boards tight, and keep cables stress and strain free.
- Solar stand to mount the panel
- I will also cut a Label which carries the project name.
What processes will be used?¶
Electronics production.
- CNC milling of PCBs.
Computer Aided Design.
- 2D and 3D design of parts.
Computer controlled machining.
- CNC milling of a solar stand.
3D printing
- 3D printing of the electronics enclosure.
Networking.
- I2C communication of input and output.
System intergration.
- proper assembling and packaging of the system parts.
programming.
What questions need to be answered?¶
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Will the Sprayer operate electrically powered by solar?
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Will the System be intelligent enough to shut down the pump when the moisture threshold is reached?
How will it be evaluated?¶
To consider the project successfull here are the essential key perfomance indicators.
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The solar powered Sprayer must be able to spray water using the solar water pump.
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The system must be able to shut down the pump when the threshold has been reached.