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IoT-Enabled Braille Display for UPI Payment Verification
📅 Jan 2025 – May 2025
📚 Course Project
🏛️ IISER Bhopal
Course Project
IoT
Hardware
Accessibility
Overview
Developed a low-cost IoT Braille display (under $35 USD) for private UPI payment verification. Engineered
a full-stack system using an Android app, BLE, and an ESP32-powered hardware prototype. Optimized the
design to use 4 instead of 6 servo motors per digit, reducing cost and complexity. Validated the prototype
in a user study, achieving high accuracy (4.8/5.0) and usability (4.0/5.0) scores.
Key Highlights
- Developed a low-cost IoT Braille display (under $35 USD) for private UPI payment verification
- Engineered a full-stack system using an Android app, BLE, and an ESP32-powered hardware prototype
- Optimized the design to use 4 instead of 6 servo motors per digit, reducing cost and complexity
- Validated the prototype in a user study, achieving high accuracy (4.8/5.0) and usability (4.0/5.0) scores