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...It accomplishes this by maintaining a database with the credentials of each ESL and the last image that was sent to it. When you choose the image to be displayed on the ESL and hit the "Send Image To ESL" button, the software encrypts that image, sends it to the specified ESL over Wi-Fi using the UDP protocol, and then saves it to the database.
An electronic shelf label is a device that displays relevant product information, they're usually attached to the front edge of retail shelving. A typical ESL consists of a display and a simple microcontroller that controls the display.
*V2.0 now supports ESP32 CYD
You can learn more on:
Github: github.com/Northstrix/Electronic-Shelf-Label-Management-System
Instructables: https://www.instructables.com/DIY-Electronic-Shelf-Label-Management-System-V20/
...ESL Firebase Edition V2.0 utilizes the AES-256 in CBC mode and Google Firebase. It doesn't require an expensive gateway to function, once configured, all it needs is a power supply and a Wi-Fi access point.
ESL Firebase Edition V2.0 allows you to operate as many of them as you wish, provided that each has its own unique ID, and there's enough power and bandwidth for all of them.
For more information please visit https://github.com/Northstrix/Electronic-Shelf-Label-Firebase-Edition
You can find the tutorial on
V2.0: https://www.instructables.com/DIY-IoT-Electronic-Shelf-Label-With-Google-Firebas-1/
V1.0: https://www.instructables.com/DIY-IoT-Electronic-Shelf-Label-With-Google-Firebas/
The desktop app is made with the help of the ChatGPT.
UDP Image Uploader with Serpent Encryption Algorithm in CBC Mode
Easily transfer an encrypted image from your PC to the display connected to the microcontroller via Wi-Fi using the UDP protocol.
*Improved version is available at https://sourceforge.net/projects/esl-management-system/
User guide is available at https://medium.com/@Northstrix/how-to-stream-encrypted-images-over-udp-71f5e2ab1b0c
* Credit for photo: https://www.pexels.com/photo/bird-s-eye-view-of-city-during-daytime-2815170/