Nail Braille

About

Nail Braille is an innovative project aimed at revolutionizing the way people learn and interact with Braille. This project uses affordable components and 3D-printed parts to create a unique and effective learning tool.

This project earned the Platinum Award for Innovation at the 2023 Canada Wide Science Fair. For more information, visit the project page here.

Overview

• Requirements
  • Hardware
  • Software
• Setup
  • Arduino
  • Web Interface
    • Wiring
• Installation

Requirements

Hardware

• 2 Breadboards
• 1 ESP32 Dev board
• 2 Buttons
• 3 LEDs (Red, Green, Blue)
• 3 100K Ohm resistors
• 2 10K Ohm resistors
• 2 28BYJ-48 Stepper motors and their controllers (ULN2003A)
• Male to male jumper wires
• 12v DC power supply
• DC female plug
• USB-A to micro-USB cable

Software

• Node.js
• npm

Setup

Wiring

Wire the components as shown below.

Arduino

1. Flash your microcontroller of choice with the sketch found in microcontroller/Braille

Note: Your microcontroller must be Arduino compatible

Web Interface

1. 3D print the Braille disks and base found in the /models directory.
2. Wire the components according to the diagram below.
3. Place the disks on the motors and the motors in the base.
4. Connect the motors to the motor controllers.

Installation

# Clone the repository
git clone https://github.com/Moulik-Budhiraja/Nail-Braille.git

Change line 4 of server/index.ts to the correct serial port for your Arduino.

In individual terminal instances:

# Install and run the client
cd Nail-Braille/client
npm install
npm run dev

# Install and run the server
cd Nail-Braille/server
npm install
npm start