Comments on: ESP32 RFID User Management System with Web Server https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/ Learn ESP8266, ESP32, Arduino, and Raspberry Pi Mon, 12 May 2025 06:31:36 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: satriara https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1042801 Mon, 12 May 2025 06:31:36 +0000 https://randomnerdtutorials.com/?p=164167#comment-1042801 In reply to Juergen.

Hello, sir. How do you solve the Wi-Fi problem?

]]> By: Rui Santos https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1024373 Mon, 07 Apr 2025 09:57:43 +0000 https://randomnerdtutorials.com/?p=164167#comment-1024373 In reply to Juergen.

Does your MicroSD Card Module operate at 3.3V instead? Please check the voltage required for your particular MicroSD Card Module as it can definitely fail to initialize if you don’t supply the correct voltage.

]]> By: Rui Santos https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1024370 Mon, 07 Apr 2025 09:49:36 +0000 https://randomnerdtutorials.com/?p=164167#comment-1024370 In reply to Max Cogar.

By default, this code is already controlling an LED on/off with a buzzer that beeps temporarily… If you connect a relay to the GPIO it would control an actual door.

]]> By: Rui Santos https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1024369 Mon, 07 Apr 2025 09:48:56 +0000 https://randomnerdtutorials.com/?p=164167#comment-1024369 In reply to Hamzah.

You would need to use HTTP POST, to send the data over to a online database… Then, you would need to create some sort of API that with an HTTP GET it would return some information that is currently stored in the database

]]> By: Juergen https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1010880 Tue, 25 Feb 2025 11:34:57 +0000 https://randomnerdtutorials.com/?p=164167#comment-1010880 Hello,
I solved the problem with the WiFi connection by using a different ESP32.
But now I have a hardware problem:
with the “MicroSD Card Module” connected, the “MFRC522 RFID Reader” is not recognized: “WARNING: Communication failure, is the MFRC522 properly connected?”
Could this be due to the supply voltage?
MicroSD Card Module –> 5V DC
MFRC522 RFID Reader –> 3V3 DC
Juergen

]]> By: Hamzah https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1010656 Mon, 24 Feb 2025 15:50:40 +0000 https://randomnerdtutorials.com/?p=164167#comment-1010656 I have a question. How can i implement this design with an online database and can I use an esp32 as a host server? i have many doors and want to connect them all to a single server. How can I do that?

]]> By: Max Cogar https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1010619 Mon, 24 Feb 2025 13:11:28 +0000 https://randomnerdtutorials.com/?p=164167#comment-1010619 What would I have to add to be able to control the locks through the interface so I could let someone in without actually going to the door?

]]> By: Sara Santos https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1010488 Mon, 24 Feb 2025 02:19:57 +0000 https://randomnerdtutorials.com/?p=164167#comment-1010488 In reply to frank.

What is exactly the issue?
double-check power supply to the microSD card module. Some modules require 5V to operate.
Regrds,
Sara

]]> By: Juergen https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1010400 Sun, 23 Feb 2025 14:04:56 +0000 https://randomnerdtutorials.com/?p=164167#comment-1010400 Hello,
I also have the problem with the wifi connection,
I also tried the solution from “Richard”, unfortunately that didn’t help.
Juergen

]]> By: frank https://randomnerdtutorials.com/esp32-rfid-user-management-web-server/#comment-1010285 Sun, 23 Feb 2025 05:47:43 +0000 https://randomnerdtutorials.com/?p=164167#comment-1010285 im un able to get both RC522 and MicroSD Card Module to be connect at the same time not sure if its an issue on my end

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