Biometric & RFID Edge Computing Firmware
A sophisticated IoT attendance system built on the ESP32 platform. It integrates biometric fingerprint scanning, RFID card reading, and environment sensors (DHT11) to provide a complete edge-computing solution for workplace management.
To build a secure, async-capable firmware that handles real-time sensor data and provides a captive portal for device configuration.
Developed using the Arduino framework with specialized handlers for SPIFFS storage, async web servers, and multi-sensor polling. Implemented SHA-256 password hashing for local setup security.
Successfully deployed a low-latency attendance device with integrated OLED status display and remote NTP time synchronization.