13.56 MHz RFID reader showing MIFARE card UIDs on a 16x2 I2C LCD, in a custom 3D printed case. Base for access control.
We built a scalable oneM2M IoT system with real-time data, secure access, and seamless BLE handover.
Added iPhone remote unlock & notifications to a Fermax 4+N analogue intercom using Shelly Gen4, PC817 and a buck converter.
A production loading-dock door system: PWA control, biometric login, role-based access, and full activity logging on an ESP32.
