Recording RFID CARD data on SD CARD

Projects Programming
3

6v6gt:
Here is one possible issue:

SoftwareSerial RFID(0,1); // RX and TX

This is a bad choice for software serial on a Uno because these are the hardware serial ports and these will interfere with each other.

If you still have problems, break the code in two parts and test each separately ( RFID handling and SD card code).

I have changed them with

SoftwareSerial RFID(2,3); // RX and TX and still didn't work. Do you have any idea?