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Sto-Ro

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Wayne Toh

Project Timeline

Aug 2021 - Dec-2021

OVERVIEW

This project focuses on automating commercial storage facilities using a smart robotic system designed to locate, organize, and store inventory efficiently while minimizing manual labor and wasted space. The system integrates mechanical motion control, embedded electronics, and automation logic to create an intelligent, space-optimized storage solution.

HighlightS

Designed and built a fully functional robotic prototype for automated inventory handling.

Integrated ESP32 control system with stepper motors and linear actuators for precise positioning.

Fabricated custom mechanical parts using 3D printing and laser cutting for structural optimization.

Demonstrated successful autonomous transport of loads to predefined storage locations.

SKILLS

CADPythonLaser cuttingWoodwork3D Printing

Additional Details


Goals

Automate commercial storage facilities using a smart robot to locate, organize, and store inventory efficiently and effectively to reduce the amount of used space and manual labor.

102B Final Assembly.png

Concept Drawing

ME102B idea.png

Components used

Hardware

  • 3x Stepper Motors (42 N-cm)
  • 1x Linear Actuator (2 kg – 100 mm)
  • 3x 5mm to 8mm Shaft Couplers
  • 2x Flanged linear bearing
  • 2x X Tr8x8 500mm Lead Screws
  • 1x X Tr8x8 350mm Lead Screw
  • 2x 8mmx400mm Shafts
  • 4x Tr8x8 Threaded Inserts
  • 5x 8mmx22mmx7mm Bearings
  • Various Screws and Nut

102B laser cutting.png 102B 3D printing.png

Custom Parts

  • 3D Printing with PLA
    • Bottom & Top Main Platforms
    • Horizontal Lead Screw Support
    • Pillow Block Bearing Housing
    • Wheel Support

  • Laser Cutting with Plywood

    • Base Platform
    • Linear Actuator Housing & Guide
    • 508 mm x 254 mm x 127 mm Shelf
    • Horizontal Bearing & Stepper Motor Base
    • Vertical Stepper Motor & Flange Linear Bearing Support

Circuit

  • 1x Circuit Breadboard
  • 2x A4988 Motor Drivers
  • 2x 5v Relays
  • 2x  47 µF Capacitors
  • 1x Linear Actuator
  • 3x NEMA 17 Stepper Motors
  • 1x ESP32
  • 12V Power Supply

Final Product

102B real assmebly.png

Successfully built a functioning prototype of our concept, capable of transporting 15lb loads to designated slots with ±0.2 mm
positioning accuracy. However, many limitations still apply.


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