Two ESP32 Boards at the Same Time – RFID Door Lock & ESP32-CAM Projects

Описание: Here is a 500-word brief description (without code) for your YouTube video that covers uploading code to two ESP32 boards (RFID-based door lock and ESP32-CAM) using two computers at the same time, written in an informative and engaging way in English:


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In this video, we demonstrate how to upload code simultaneously to two different ESP32 development boards – one used for an RFID-based door lock system and the other for an ESP32-CAM project. This setup is ideal for makers, students, and tech enthusiasts who are building multiple IoT projects and want to save time by programming them in parallel using two computers.

We begin by introducing the ESP32 microcontroller and its wide use in electronics, automation, and IoT projects due to its built-in Wi-Fi and Bluetooth capabilities. One of our ESP32 boards is connected to an RFID module (RC522) and a relay to control a solenoid lock. This setup forms a basic RFID door lock system where access is granted when an authorized RFID card is scanned.

On the second computer, we use another ESP32 board – specifically an ESP32-CAM module. This board has a built-in camera and can stream video over Wi-Fi. In our project, we upload the camera web server sketch which allows the board to act as a live surveillance system or camera monitor. This is a great project for beginners looking to explore computer vision or remote monitoring.

To upload the codes at the same time, we connect each ESP32 board to its own computer. On both machines, we run the Arduino IDE with the correct board settings and COM ports selected. It’s important to install the necessary board packages and libraries (like MFRC522 for RFID and esp32-camera for ESP32-CAM) on both computers beforehand. We walk through the steps to upload the sketches correctly, including the common step of pressing the BOOT or RESET buttons when prompted.

We also show wiring diagrams for both projects to help viewers connect the hardware properly. The RFID system includes the RC522 reader module wired to specific pins on the ESP32, along with a relay module that controls the locking mechanism. The ESP32-CAM requires an FTDI adapter for programming and specific pin connections to enable flashing.

After successfully uploading the code to both boards, we test each project in real-time. The RFID door lock responds to authorized tags by unlocking for a few seconds, while the ESP32-CAM displays a live video feed in a browser using the local IP address.

Throughout the video, we provide practical tips for troubleshooting upload errors, verifying connections, and ensuring that both projects work as expected. This dual upload method saves time for developers working on multiple ESP32-based builds and is a useful skill for makers managing several devices.

By the end of the video, you’ll understand how to prepare your setup for simultaneous programming, how to manage two separate Arduino IDE environments, and how to test both ESP32 projects efficiently. Whether you're building smart locks or camera surveillance systems, this tutorial gives you the foundation to work faster and smarter in your IoT development journey.