Week 17. Applications and Implications¶
Planning a final project masterpiece that will integrate the range of units covered.¶
What will it do?¶
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The submarine will be able to move forward and backward.
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Fins will be used to control movement up, down, left, and right.
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A water pump will be used to fill the tank for diving and floating.
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Data about battery, temperature, and position will be sent using LoRa through a coaxial cable to a floating station.
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It will be controlled from a computer by a program created in C#.
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A camera will be used to record video. (Advanced)
Who’s done what beforehand?¶
- Underwater robots have been made by many people, like OpenROV and Blue Robotics.
What sources will you use?¶
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Datasheets of components will be used (Heltec ESP32S3 LoRa, INA219, MPU6050).
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Fab Academy projects and online tutorials from GitHub and YouTube will be used.
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Manuals from suppliers will be used as reference.
What will you design?¶
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The PCB board will be designed in KiCad.
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The submarine case and parts will be designed in Fusion 360.
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Internal mounts, pump system, and fins with servos will be designed in Fusion 360.
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The control program in C# will be developed in Visual Studio, using Windows Form Application.
What materials and components will be used?¶
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PLA and PETG plastics will be used for 3D printing.
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Acrylic tube will be used for the tank.
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Bearings will be used on all shafts.
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Seals and gaskets will be used for waterproofing.
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Heltec ESP32 LoRa V3 and ESP32-S3 with camera.
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Sensors for battery and temperature.
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Servo motors and DC motor.
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Water pump, batteries, BMS, DC-DC converters, and Antenna with coaxial cable.
Where will they come from?¶
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Electronic parts will be bought online (Temu , Wildberries) and in local stores.
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Materials like plastic and acrylic will come from Fab Lab and local shops.
How much will they cost?¶
| № | Component | Quantity | Unit Price (USD) | Total Price (USD) | Source |
|---|---|---|---|---|---|
| 1 | Heltec ESP32 LoRa V3 | 1 | 35.00 | 35.00 | AliExpress |
| 2 | ESP32-S3 CAM | 1 | 45.00 | 45.00 | AliExpress |
| 3 | 26850 Li-ion Battery | 4 | 12.00 | 48.00 | Local Supplier |
| 4 | BMS Board (with charging) | 1 | 10.00 | 10.00 | AliExpress |
| 5 | DC-DC Converter (5V/12V) | 2 | 5.00 | 10.00 | AliExpress |
| 6 | Water Pump (12V) | 1 | 15.00 | 15.00 | Local Store |
| 7 | MPU6050 (Accelerometer) | 1 | 3.00 | 3.00 | AliExpress |
| 8 | INA219 Current Sensor | 1 | 3.00 | 3.00 | AliExpress |
| 9 | Bearings (various sizes) | 6 | 2.00 | 12.00 | Local Hardware Shop |
| 10 | Seals and O-rings | 10 | 1.00 | 10.00 | Local Hardware Shop |
| 11 | Coaxial Cable | 10 m | 1.50 / m | 15.00 | Local Electronics |
| 12 | PLA Filament (1kg) | 3 | 15 | 45.00 | Local Store |
| 13 | PETG Filament (0.5kg) | 1 | 25.00 | 25.00 | Local Store |
| 14 | PCB Milling Materials | - | 10.00 | 10.00 | Fab Lab / Supplier |
| Total Estimated Cost | 271.00 USD |
The total cost will be about $271.00, including electronics, motors, batteries, seals, and printing materials.
What parts and systems will be made?¶
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The submarine case will be made by 3D printing.
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The PCB will be made by milling.
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Software
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Mechanical parts such as shafts, mounts.
What processes will be used?¶
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KiCad will be used for 2D PCB design.
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Fusion 360 will be used for 3D modeling.
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3D printing and PCB milling will be used for fabrication.
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Hand soldering will be done for electronics assembly.
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Programming will be done in Arduino IDE and Visual Studio.
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Assembly with waterproof sealing will be performed.
What questions need to be answered?¶
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If the submarine is fully waterproof.
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The Communication works well over the coaxial cable.
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Battery life and sensor accuracy need to be measured.
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It needs to be tested if fins control the submarine properly.
How will it be evaluated?¶
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It will be evaluated by how well the submarine works underwater.
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The stability and clarity of data transfer.
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The control quality might be tested.