ESP32 Cam based Smart Door Lock using Mesh Networking

The ESP32 Cam based Smart Door Lock system operates by connecting multiple ESP32-CAM modules together through a decentralized wireless topology known as a mesh network. Using the painlessMesh library in the Arduino IDE, individual microcontroller nodes can communicate with one another without relying on a traditional central router, extending the effective communication range across a larger space. At the door entry point, an ESP32-CAM module monitors physical access using a magnetic door sensor configuration. When a magnet is brought close to or moved away from the sensor, it alters the state of the digital pin, signaling whether the door is opened or closed. Because the ESP32-CAM integrates a camera module alongside Wi-Fi and Bluetooth capabilities, the system can potentially capture visual data or stream status updates across the mesh network to other nodes. This decentralized approach allows multiple nodes to relay data, coordinate automation tasks like lighting control, and maintain responsive communication for home security applications even if one part of the network experiences interference.