Unlock a Door With Face Recognition Using ESP32 Camera

Introduction

Face recognition have been used in smartphone in past few years. It is a cool technology where you can unlock your phone or to access any application that require high security. With ESP32-CAM, we can try to develop a simple application that use your face as ID. Since ESP32 board package already comes with CameraWebServer example code that cater for video stream and face recognition, let's try to modify a bit so that it can control a relay to ON and OFF.

Video

This video shows how to unlock a door magnetic lock through face recognition using ESP32 camera.

Hardware Preparation

This is the list of items used in the video.

• ESP32-CAM Wireless IoT Vision Development Board
• UC00A (FTDI) USB to UART Converter
• 1CH Active H/L 5V OptoCoupler Relay Module
• 80mm Magnetic Door Lock
• Adapter 12V 2A (UK Plug)
• DC Jack(Female) to Screw Terminal Adapter
• Jumper Wire

The custom PCB is created using CNC on Snapmaker. Below is the list of components used in the PCB.

• PCB PS 4x6inch
• Straight Female Header 1x40 Ways
• Right Angle Pin Header (Male) 1x40 Ways
• Straight Pin Header (Male) 1x40 Ways
• Mini Slide Switch(PCB)
• PCB Stand (screw & screw)10mm

Schematic and PCB files for custom PCB.

If you have Snapmaker, you can download - THIS FILES, and use it for CNC your PCB.

Sample Program

The program is edited directly from CameraWebServer example. Please refer to the video.

Thank You

References:

• ESP32-CAM Video Streaming and Face Recognition with Arduino IDE

Thanks for reading this tutorial. If you have any technical inquiries, please post at Cytron Technical Forum.

"Please be reminded, this tutorial is prepared for you to try and learn.
You are encouraged to improve the code for a better application."