List of my latest Arduino Tutorials:

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  Arduino RFID Database Security System: Program Arduino and ESP8266
  by donsky
  October 14, 2020
  In this article we are going to program our Arduino RFID Database Security System. We will configure the Arduino to read the MFRC522 RFID Reader and retrieve the RFID code. The RFID code is then sent thru the ESP8266 ESP-01 through serial communication.
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  Arduino RFID Database Security System: Designing the Project
  by donsky
  October 9, 2020
  This article describes how to design an Arduino RFID Security System that uses the ESP8266 ESP-01 to communicate with the database