Pi 5 Robotic Tactile Braille Reader
Build a Robotic Braille Reader with Raspberry Pi 5 – Accessibility Robotics Project
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This kit guides you through building a robotic device that physically reads Braille by touch—a 3x4 sensor array attached to servo motors scans raised dots on a custom Braille card, converting the tactile pattern into text on the Pi 5 screen. Perfect for engineering students tackling accessibility-focused robotics or hobbyists aiming to create assistive technology that can later integrate with speech output.
What You'll Build
A fully functional Braille reader: a force-sensitive resistor (FSR) array interfaced with two ADS1115 ADCs samples the dot pattern, while three SG90 servos under PCA9685 control move the array across a Braille cell. The Raspberry Pi 5 processes the analog signals, decodes the Braille letter, and displays it—ready for extension to audio feedback or wireless notifications.
What You'll Learn
- Multiplex and read a 3x4 force-sensitive resistor array using ADS1115 16-bit ADCs
- Control servo motors with PCA9685 driver for precise mechanical scanning
- Process analog sensor data on Raspberry Pi 5 for real-time Braille dot recognition
- Design an assistive robotics system with potential for AI-based pattern classification
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi 5 4GB | 1 |
| 3x4 FSR Array | 1 |
| ADS1115 ADC | 2 |
| Servo Driver PCA9685 | 1 |
| SG90 Servo | 3 |
| NVMe SSD 128GB | 1 |
| Pi 5 M.2 HAT+ | 1 |
| USB-C PSU | 1 |
| M-M Wires | 20 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Ideal for B.Tech ECE/EEE/CS students prototyping for Smart India Hackathon or assistive tech challenges, CBSE Class 11-12 students with prior Raspberry Pi experience, and ATL Tinkering Lab members. Also serves IIT/NIT/VIT/BITS engineering students exploring robotics for social good.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code to access the AI companion that understands this exact project; you can also send a WhatsApp message with a photo of your setup and our team will help debug within hours.
Can I use a different Braille card or custom dot patterns?
Yes, the FSR array and software accept any 3x2 Braille cell layout. You can create your own tactile cards using embossed paper or 3D-printed dots and adapt the code to match the spacing.
Does the kit include the Braille cards to test with?
The kit ships with a sample set of 3D-printed Braille cards with all letters and numbers. You can also follow the build guide to make additional cards at home.
Can I extend the project to speak the recognized text?
Absolutely. The Pi 5 processes the decoded Braille into a string, and the AI companion includes instructions to integrate a text-to-speech engine like eSpeak or any TTS module you have, with demos for Hindi and English output.
Tactile sensor array on Pi 5 reads Braille dots by touch and converts to text — accessibility robotics project.
What's in this kit
- Raspberry Pi 5 4GB
- 3x4 FSR Array
- ADS1115 ADC x2
- Servo Driver PCA9685
- SG90 Servo x3
- NVMe SSD 128GB
- Pi 5 M.2 HAT+
- USB-C PSU
- M-M Wires x20
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items