ESP32-CAM Face Recognition Door Lock System

The ESP32-CAM Face Recognition Door Lock System operates by combining edge computing, image processing, and electromechanical control into a single cohesive unit. At the heart of the system is the ESP32-CAM microcontroller, which features an integrated camera module capable of capturing visual data and enough processing power to run lightweight machine learning algorithms. When a user stands in front of the camera, the ESP32-CAM captures an image frame and processes it using embedded face recognition software programmed via the Arduino IDE. If the captured face matches the authorized facial data stored in the microcontroller's memory, the ESP32-CAM changes the state of its digital output pin. This signal is sent to a relay module, which acts as an electrically operated switch. Because the ESP32-CAM operates on low-voltage DC power while many physical actuators require more robust power, the relay isolates the low-voltage logic circuit from higher power requirements. When triggered, the relay closes the circuit for the connected solenoid lock, allowing electrical current to flow and retract the locking mechanism. Once the designated unlock time elapses, the relay opens the circuit again, and the solenoid lock returns to its secure, locked position.