https://github.com/rehankarthikchandralal/bar-code-scanner-robot-with-error-correction-and-stack-machine

Built a Bar Code scanning Robot with the help of LEGO Mindstorms EV3 set that could read an encoded Barcode, decode the barcode and display and speak out the final result.
https://github.com/rehankarthikchandralal/bar-code-scanner-robot-with-error-correction-and-stack-machine

embedded-systems git python

Last synced: about 2 months ago
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Built a Bar Code scanning Robot with the help of LEGO Mindstorms EV3 set that could read an encoded Barcode, decode the barcode and display and speak out the final result.

• Host: GitHub
• URL: https://github.com/rehankarthikchandralal/bar-code-scanner-robot-with-error-correction-and-stack-machine
• Owner: rehankarthikchandralal
• Created: 2024-10-31T12:33:59.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2025-01-14T11:44:28.000Z (over 1 year ago)
• Last Synced: 2025-07-06T10:41:09.377Z (about 1 year ago)
• Topics: embedded-systems, git, python
• Language: Python
• Homepage:
• Size: 485 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# LEGO Mindstorms EV3 Barcode Scanning Robot

**Project Overview**

This project involved building a LEGO Mindstorms EV3 robot capable of:

1. **Scanning Barcodes:** Precisely scanning individual barcodes on a sheet.

2. **Decoding Barcodes:** Using Hamming Code logic to decode the scanned data.

3. **Displaying and Speaking Results:** Audibly communicating the decoded information.

4. **Scrolling Through Barcode Sheet:** Mechanically navigating to different barcode positions.

**Technical Implementation**

* **Hardware:**

  - LEGO Mindstorms EV3 Core Set

  - Motors for movement and barcode scanning

  - Sensors for  barcode detection

* **Software:**

  -  Python with appropriate libraries

  - Hamming Code implementation

  - Stack Machine for instruction/operand execution

* **Version Control:** GitLab

**Workflow**

1. **Barcode Scanning:**

   - Robot precisely positions itself over a barcode using motor control.

   - Barcode sensor captures the image.

2. **Decoding:**

   - Captured image is processed to extract raw data.

   - Hamming Code is applied to correct errors and extract the original data.

3. **Result Processing:**

   - Decoded data is interpreted as a sequence of instructions or characters.

   - A stack machine executes these instructions or displays/speaks the characters.

4. **Scrolling:**

   - Motors are controlled to move the robot to the next barcode position.