Smart Home Gateway with NFC Access, BLE, Wi-Fi

Droid Technologies designed and developed a smart home IoT gateway with NFC-based access control, connecting local wireless devices with cloud services and building automation systems.

The gateway collects data from sensors and smart devices over Bluetooth Low Energy (BLE) and sends telemetry to the Microsoft Azure cloud through Wi-Fi or Ethernet. Secure communication uses MQTTS and HTTPS, with support for OTA firmware updates and remote device management.

The system is based on Nordic nRF52840 and ESP8266 / ESP32-S3 platforms. An integrated NFC reader enables contactless door unlocking, while a capacitive touchscreen display provides local configuration and control. Power over Ethernet (PoE) simplifies installation by combining network and power through a single cable.

Droid Technologies delivered hardware design, PCB development, embedded firmware, BLE/Wi-Fi integration, NFC, touchscreen GUI, PoE integration, Azure cloud connectivity, and system testing.

Key features and engineering scope:

• Nordic nRF52840 MCU
• ESP8266 / ESP32-S3
• BLE, Wi-Fi, and Ethernet
• Power over Ethernet (PoE)
• NFC access control
• Capacitive touchscreen display
• Microsoft Azure cloud integration
• MQTTS and HTTPS
• OTA firmware updates
• Remote monitoring and device management
• Custom PCB and embedded firmware development

This project demonstrates Droid Technologies’ expertise in smart home gateways, NFC access control, nRF52840 and ESP32 development, BLE/Wi-Fi devices, PoE hardware, Azure-connected IoT systems, touchscreen embedded devices, and building automation.

Droid Technologies provides hardware design services, firmware development services, PCB design, embedded systems development, IoT development, cloud integration, mechanical design services, prototyping, and full-cycle electronic product development.