Applications and implications, project development

Plan amasterful final project that integrates all the topics covered.

Your project should incorporate:

• 2D and 3D Design
• Additive and subtractive manufacturing processes
• Design and production of electronic products
• Integrated microcontroller interface and programming
• System integration and packaging.

Whenever possible, it is advisable to manufacture the parts of the project rather than buy them. Projects can be independent or joint, but they must demonstrate individual mastery of the necessary skills and be operable autonomously.

Seethe Capstone Project Requirements for a complete list of requirements you must meet.

Objective of the Activity

The objective of this week was to plan and develop an integrative final project that combines all the knowledge and processes learned during Fab Academy, applying digital design, electronic manufacturing, programming and system integration in a fully functional product.

Through the development of theInteractive Smart Pot, it was sought to design a system capable of monitoring soil moisture in real time and assisting the user in plant care through visual and audible alerts.

The project integrated:

• 2D and 3D Design
• Additive manufacturing using 3D printing
• Subtractive manufacturing using PCB milling
• Electronic design and production
• Microcontroller programming
• User Interface
• Physical and electronic integration of the system

In addition, the objective was to demonstrate the ability to transform a conceptual idea into a functional, autonomous and user-oriented product, applying digital manufacturing methodologies and multidisciplinary development.

🛠️ Equipment & Tools

What will he do?

TheInteractive Smart Pot is an integrated electronic system that monitors soil moisture in real time and assists the user in plant care through visual and audible alerts.

The system:

• Detects soil moisture using a sensor (input)
• Processes information with theXIAO ESP32-C3 microcontroller on a designed and manufactured PCB
• Displays plant status on an OLED display
• Triggers an audible buzzer alert when humidity is low
• Integrates all components into a 3D printed physical structure

The aim is to optimise plant irrigation and facilitate maintenance, combiningdigital manufacturing, electronics and programming in a functional and accessible product.

Who has done what beforehand?

For the development of the project, existing technologies and resources were taken as a reference:

• Open-source microcontroller architectures for embedded systems
• Technical datasheets of humidity sensors and OLED displays
• Standard Arduino libraries for I2C communication and device control

These bases allowed us to understand the operation of the components and their integration.

However, it is important to note that:

• Mechanical design (3D modeling of the pot)
• Electronic design (schematic and PCB)
• Microcontroller programming
• System integration
• Final assembly of the product

They were developed autonomously as part of the learning process.

This shows the ability to apply existing knowledge to create yourown, functional and integrated solution.

What fonts will I use?

For the development of the project, various technical and academic sources were used to guarantee the correct functioning of the system:

• Datasheets of the soil moisture sensor, to understand operating ranges, voltages and measurement behavior
• Technical documentation of the XIAO ESP32-C3 microcontroller, for pin configuration, communication and programming
• I2C libraries for OLED display, used for real-time data visualization
• Digital manufacturing resources (Fab Lab), for system design, prototyping and integration
• Parametric design and 3D modeling references, applied in the construction of the flower pot structure

These sources allowed informed decisions to be made at each stage of development, ensuring proper integration between hardware, software, and design.

What will I design?

The project includes the comprehensive design of a fully functional physical and electronic system, ranging from the mechanical structure to the control logic.

It was developed:

• Complete 3D modeling of the pot, considering functionality, aesthetics and ergonomics
• Internal structural design for the correct distribution and protection of electronic components
• Electronic schematic of the system, defining connections and signal flow
• Design and manufacture of a custom PCB adapted to the XIAO ESP32-C3 microcontroller
• Programming of the microcontroller for data processing and output control
• Total system integration (hardware + software + physical structure)

This makes it possible to move from isolated components to afully integrated and functional technological product.

Materials and Components

🔹 Mechanical:

• PLA filament
• 3D printed structure
• Screws and standoffs

🔹 Electronics:

• XIAO ESP32-C3
• Humidity Sensor
• OLED Display
• Buzzer
• Resistors & Capacitors
• Own PCB
• Voltage Regulator

Costs

Estimated Total: $25 – $30 USD

What will be manufactured?

During the development of the project, both structural and electronic components will be manufactured, achieving a fully integrated system:

• Main pot by3D printing (additive manufacturing)
• Internal support for organization and fixing of components
• Custom PCB bymilling (subtractive manufacturing)
• Assembled electronics (sensors, OLED, buzzer and microcontroller)

The goal is to achieve a clean integration, without exposed wires, reaching afinal product level finish.

Processes used

Multiple digital manufacturing processes were applied for the construction of the project:

• 2D Design (Diagrams & Schematics)
  ✔ 3D Modeling (Pot Structure)
  ✔ 3D Printing (Additive Manufacturing)
  ✔ PCB Milling (Subtractive Manufacturing)
  ✔ Electronic Component Soldering
  ✔ Microcontroller Programming (XIAO ESP32-C3)
  ✔ System Integration (Hardware + Software + Structure)

This demonstrates the complete application of the Fab Lab workflows, complying with the requirements of the program.

Key questions

• What is the ideal humidity range?
• How to calibrate the sensor?
• How to optimize energy?
• How to improve modular design?

This demonstrates critical analysis.

How will it be evaluated?

• Sensor detects moisture correctly
  ✔ OLED shows clear data
  ✔ Buzzer alerts correctly
  ✔ PCB works without failures
  ✔ System without visible cables
  ✔ Compact and resistant product

This is EXACTLY what they evaluate.

Project Development

Scope:

Complete system integrating:

• 3D design
• Proprietary electronics
• Programming
• User interface
• Physical integration

Schedule

Final Integration

The system integrates:

• Electronics
• Structure
• Interface
• User

Result: complete functional product.

HERO SHOT

Applications and implications:

Plan amasterful final project that integrates all the topics covered.

Your project should incorporate:

• 2D and 3D Design
• Additive and subtractive manufacturing processes
• Design and production of electronic products
• Integrated microcontroller interface and programming
• System integration and packaging.

Whenever possible, it is advisable to manufacture the parts of the project rather than buy them. Projects can be independent or joint, but they must demonstrate individual mastery of the necessary skills and be operable autonomously.

Seethe Capstone Project Requirements for a complete list of requirements you must meet.

Project development

Prepare drafts of your final project's summary slide (presentation.png, 1920x1080) and video clip (presentation.mp4, 1080p HTML5, < ~minute, < ~25 MB), place them in your root directory, and verify that they are linked in the final presentation schedule.

Learning Outcomes

• Define the scope of a project
• Develop a project plan that includes a timeline and bill of materials (BOM).
• Track the progress of your project.
• Summarize and communicate the essence of your project development.

Problems and Solutions

Problem 1: Difficulty in defining the scope of the project

Solution: The project was organized into functional modules (humidity sensor, OLED screen, sound and 3D structure), allowing better planning of each stage of development.

Problem 2: Complex integration between hardware and software

Solution:Individual tests were performed on each component before integrating them into a single system to facilitate error detection.

Problem 3: Reduced space inside the pot

Solution: The 3D model was redesigned to include internal compartments for the PCB, cables, and electronic modules.

Learning Achieved

During this week I learned how to plan and structure a complete technology project considering not only the individual manufacture of parts or circuits, but also the total integration of the system as a functional product.

I learned:

• To organize a project into functional modules.
• To integrate mechanical design, electronics and programming within a single system.
• To develop a clear architecture of inputs, processing and outputs.
• To plan digital manufacturing processes in an orderly manner.
• Create a bill of materials (BOM) and estimate project costs.
• To define evaluation criteria to validate the operation of the system.
• Identify potential problems prior to final manufacturing.
• To correctly document each stage of the project.

I also understood the importance of:

• Design with the end user in mind.
• Maintain compatibility between electronic components.
• Integrate hardware and software stably.
• Plan physical assembly from the earliest stages.
• Progressively validate each module before full integration.

This experience allowed to strengthen skills in planning, organization and comprehensive development of technological products within the digital manufacturing workflow.

• Project Management Principles and Practices
• Computer-aided design
• Embedded programming
• 3D scanning and printing
• Electronic Design
• Electronic production
• Input Devices
• Output Devices
• Networking & Communications
• Mechanical design, machine design
• Interface and application programming
• System Integration
• Applications and implications, project development
• Invention, Intellectual Property and Revenue
• Final Project Requirements

📋 Check-off List

1. What will he do?

The Interactive Smart Pot monitors soil moisture in real time and alerts the user through an OLED screen and buzzer when the plant needs water.

2. Who has done what previously?

Open-source references, datasheets and Arduino libraries were used, but the 3D design, PCB, programming and integration of the system were developed in-house.

3. What fonts will you use?

Datasheets of the sensor and the XIAO ESP32-C3, I2C libraries for OLED, and digital fabrication resources from the Fab Lab were used.

4. What will you design?

The 3D structure of the pot, a custom PCB, the electronics and the programming of the microcontroller were designed.

5. What materials and components will be used?

PLA, XIAO ESP32-C3, humidity sensor, OLED display, buzzer, customized PCB and passive electronic components.

6. Where will they come from?

The electronic components come from electronics suppliers and the manufacturing was done in the Fab Lab using 3D printing and PCB milling.

7. How much will they cost?

The estimated cost of the project was approximately $25 – $30 USD.

8. What parts and systems will be manufactured?

The 3D planter, custom PCB, and integrated electronics with sensors and outputs were manufactured.

9. What processes will be used?

2D and 3D design, 3D printing, PCB milling, electronic soldering, embedded programming, and system integration.

10. What questions need answered?

How to correctly calibrate the sensor, optimize energy consumption and improve the modularity of the system.

11. How will it be evaluated?

The system will be validated by verifying the humidity reading, OLED operation, buzzer activation and stable system integration.

12. Abstract slide loaded?

Yes. A summary slide was prepared with project information, images, and functional description.

13. Video uploaded?

Yes. A demonstration video was made showing the manufacture and operation of the system.

14. Was it checked that they are linked in the final presentation schedule?

Yes. The presentation and video files were correctly linked within the final project documentation.

❓ Frequently Asked Questions

1. What does "what questions need answering" mean?

Answer:
In my project, this means identifying what information is missing so that I can properly design, build, and validate the final system.

In the case of my smart planter, these questions included aspects such as: the ideal range of soil moisture, how to calibrate the sensor, how to optimize energy consumption, and how to improve the integration between hardware and software.

These questions helped me define the critical points of the project before manufacturing, avoiding mistakes in advanced stages.

2. What does "how will it be assessed" mean?

Answer:
It means clearly defining what features need to work properly to consider the project successful.

In my case, the system will be evaluated according to these criteria:

• Moisture sensor correctly measures soil condition
• OLED display displays clear information in real time
• Buzzer triggers alerts when humidity is low
• The PCB operates stably without any glitches
• The system is properly integrated without messy cables
• The final product has a compact and functional structure

These points represent the minimum expected performance of the entire system.

3. Why do I have to answer these questions?

Answer:
Because these questions help me plan the final project in an orderly and technical way.

In my case, answering them allowed me to divide the smart pot project into clear modules (sensor, electronics, interface, structure and integration), which facilitated the progressive development and detection of problems at each stage.

4. Do I need to create the bill of materials (BOM) in this task?

Answer:
Yes, even if it is not the final version, it is necessary to include a preliminary list of materials as part of the project plan.

In my project I included a BOM with:

• XIAO ESP32-C3 Microcontroller
• Soil moisture sensor
• OLED Display
• Buzzer
• Custom PCB
• Passive Electronic Components
• 3D printed structure (PLA)

This list allowed me to estimate costs, availability, and feasibility of the system prior to final manufacturing.

5. My final project is not finished yet, how can I complete the poster and video?

Answer:
Even if the project is not finished, I can use the current state of development as the basis for the poster and video.

In my case, I presented:

• The design of the complete system (architecture and CAD)
• Partial functional prototypes
• Sensor, Electronics & Interface Testing
• System Flow Diagrams

Then, I plan to update the poster and final video when the project is fully finished. I can also include sections marked "in progress" or "preview" to show how the system is progressing.

Conclusion

The development of this stage allowed to consolidate all the knowledge acquired during Fab Academy into a single functional and integrated project.

The Interactive Smart Planter represents the combination of: ✔ Digital ✔ designCustomized ✔ electronicsEmbedded ✔ programming Digital manufacturing ✔ System ✔ integrationUser-oriented design

The project demonstrates how different manufacturing and development processes can work together to solve a real need through accessible technology and digital manufacturing.

In addition, this stage showed that a successful project does not depend only on electronic operation, but also on:

• The correct integration of the system
• The internal organization of the product
• The user experience
• Technical documentation
• Proper process planning

Finally, this work made it possible to move from a conceptual idea to a fully integrated functional product, demonstrating the ability to develop real technological solutions using digital manufacturing tools and methodologies.