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1. Principles and Practices

Final Project Planning: Smart 4-Box Electronic Locker System

Project Overview

I have planned and developed a comprehensive final project that integrates digital fabrication, electronics, and programming to create a functional smart locker system. This project demonstrates my understanding of the Fab Academy principles by combining multiple fabrication techniques and technologies into a cohesive, user-focused solution.

Project Requirements Analysis

Create your own integrated design

  • Original concept combining parcel locker functionality with electronic access control
  • Custom enclosure design optimized for laser cutting and 3D printing
  • Integration of mechanical structure with electronic components

Demonstrate 2D & 3D modelling capabilities

  • 2D vector designs for laser-cut enclosure panels
  • 3D parametric modeling for structural components and custom mounts
  • Assembly modeling to ensure proper fit and function

Select and apply appropriate additive and subtractive techniques

  • Subtractive: Laser cutting for precise enclosure panels and structural elements
  • Additive: 3D printing for custom component mounts and mechanical parts
  • Hybrid approach: Combining both techniques for optimal results

Demonstrate competence in design, fabrication and programming

  • Custom PCB design with Raspberry Pi Pico
  • Input: 4x4 matrix keypad for user interaction
  • Output: Solenoid locks, servo motors, and LED status indicators
  • Embedded programming in MicroPython

Demonstrate competence in system integration

  • Mechanical assembly of laser-cut enclosure
  • Electronics integration and wiring
  • Software-hardware interface
  • User interface design and implementation

Project Planning Process

Initial Concept Development

The project evolved from a mechanical code-based locker to an electronic smart system, maintaining the core functionality while enhancing usability through digital controls. This evolution demonstrates adaptive design thinking and consideration of fabrication constraints.

Technical Planning

1.Structural Design - Modular compartment design for scalability - Parametric modeling for material thickness variations - Integration points for electronic components

2.Electronics Architecture - Central controller (Raspberry Pi Pico) - Input system (keypad) with debouncing and validation - Output systems (locking mechanisms, status indicators) - Power management considerations

3.Fabrication Strategy - Material selection based on availability and properties - Manufacturing process planning (laser cutting → assembly → electronics integration) - Tolerance planning for press-fit and mechanical movements

Project Documentation Structure

The final project will be documented through:

  • Weekly progress updates aligned with Fab Academy modules
  • Technical specifications for all components
  • Fabrication files (DXF, STL, source code)
  • Assembly instructions and troubleshooting guide
  • User manual and operation procedures

Skills Demonstration Mapping

Fab Academy Skill Project Demonstration
Computer-Aided Design 2D/3D locker enclosure modeling
Computer-Controlled Cutting Laser-cut acrylic/plywood panels
Electronics Design Custom Pico-based control board
Embedded Programming MicroPython access control system
3D Scanning & Printing Custom component mounts
Input/Output Devices Keypad input, lock/LED output
System Integration Complete functional prototype

This project plan demonstrates a comprehensive understanding of digital fabrication principles and provides a clear roadmap for developing a complex, integrated system that meets all Fab Academy requirements.

Initial project concept visualization