This is the script or code for Arduino Nano (or any other device, just change minor necessary info) that connects an RFID (MFRC522 module) with a 4-pin I2C OLED display module.
This code is able to:
- scan RFID card or fobs
- present UID, PICC type, and messages to the Serial Monitor
- present UID and messages to the connected OLED display
- validate a single user's UID / RFID to present an "UNLOCKED" message on OLED display
https://github.com/rhitalin/ArduinoRFIDwithOLED/blob/main/screenCaptureRFIDOLED.png)
Here is how the devices are connected / wired:
