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  1. Week 1 : Project Management
  2. Week 2 : Computer-aided
  3. Week 3 : Computer Controlled Cutting
  4. Week 4 : Embedded Programming
  5. Week 5 :3D Scanning and Printing
  6. Week 6 : Electronic Design
  7. Week 7 : Computer Controlled Machining
  8. Week 8 : Electronics Production
  9. Week 9 : Input Devices
  10. Week 10 : Output Devices
  11. Week 11 : Networking and Communication
  12. Week 12 : Mechanical Design and Machine Design
  13. Week 14 : Molding and Casting
  14. Week 15 : Interface and Application Programming
  15. Week 16 : System Integeration
  16. Week 17 : Wildcard Week
  17. Week 18 : Applications and Implications, Project Development
  18. Week 19 : Invention, Intellectual property and Income
  19. Week 20 : FInal Project Requirements

Week 20 : Final Project Requirements

Objectives of the Week

  • Made your slide 1920 x 1080 pixels with your name, project name, Fab Lab name, a photo/render/sketch of your project, a brief description of what your project does
  • Made a -1 minute (25MB/1080p) video of you explaining your project
  • Made a separate Final Project page that summarizes/documents your project
  • Included the BOM (Bill of Materials) for your project
  • Linked from this page to any weeks that you worked on your final project
  • Documented how you implemented system integration in your final project
  • Linked to your presentation.png and presentation.mp4; make sure they are located at the root of your website
  • Included all of your original design files in the archive (2D & 3D, board files & code). No external hosting of final project files - discuss file sizes with your instructor
  • Included the license you chose
  • Acknowledged work done by others
    • Final Project

    Final Project Page

    Bill of Materials (BoM)

    The following table summarizes the major components used in the development of the Line Following Robot. The costs are approximate and may vary depending on supplier and procurement quantity.

    S.No Component Description Quantity Unit Cost (₹) Total Cost (₹)
    1 XIAO ESP32-C3 Main microcontroller for robot control and processing 1 750 750
    2 Custom Fabricated PCB Main control and sensor interface boards 2 150 300
    3 BO Gear Motors DC geared motors for locomotion 2 180 360
    4 Robot Wheels Compatible wheels for BO motors 2 60 120
    5 L298N Motor Driver Dual H-Bridge motor driver module 1 180 180
    6 5-Channel IR Sensor Array Line tracking sensor module 1 250 250
    8 JST Connectors & Wiring Interconnection cables and connectors 1 Set 150 150
    9 Header Pins Male and female pin headers 1 Set 50 50
    10 Acrylic Chassis Laser-cut structural base frame 1 150 150
    11 Rechargeable Battery Pack Power source for the robot 1 400 400
    12 Fasteners Screws, nuts, spacers, and mounting hardware 1 Set 100 100

    Total Estimated Cost: ₹2,810

    The overall cost was kept low by utilizing in-house fabricated PCBs, laser-cut acrylic components, and readily available educational robotics hardware. The design emphasizes affordability, ease of assembly, and suitability for learning embedded systems, PCB design, and autonomous mobile robotics.

    All PCB design files, source code, CAD models, fabrication files, and documentation are included within the project archive available on this page.


    System Integration

    Hardware Integration

    All components are mounted on a custom single-layer PCB. The Seeed XIAO collects joystick data, displays output on the OLED, and drives LEDs using a GPIO pin.

    Software Integration

    Arduino firmware reads inputs, updates outputs, and sends serial data to Processing for visualization. Code is modular and handles multiple tasks simultaneously.

    Power Management

    Battery powers the whole system via an AMS1117 regulator. Charging and programming are done via USB-C breakout.

    Presentation Files

    Related Weekly Assignments

    Final Project Hero Shot

    Line Bot Final Project

    Final integrated Line Bot prototype demonstrating line detection, custom electronics, embedded control, and mechanical integration.

    License

    This project is released under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.

    Line Bot © 2025 by Muheshkumar R is licensed under Creative Commons Attribution 4.0 International

    Acknowledgements

    Project Files and Resources

    To ensure reproducibility and open-source accessibility, all design files, source code, and project documentation related to the Line Bot project are provided below. These files allow anyone to understand, modify, fabricate, and further develop the system.

    Source Code

  • Line Bot Main Firmware

    • Electronics Design Files

  • KiCad PCB Design File

    • Mechanical Design Files

  • Laser Cutting DXF File
  • 3D Assembly Model

    • All files have been developed as part of the Fab Academy final project and are provided to support documentation, replication, future development, and educational use.