Hi, hope you guys can help me. Currently, I am doing a project which about a tracking system using MFRC531 and Arduino. I have followed the connection stated in the datasheet. Then I tried to use the mfrc522 library to work on MFRC531, but in my serial monitor, it shows warning as below. Firmware v…

MFRC531

system March 12, 2019, 8:39pm 2

(deleted)

Topic		Replies	Views
Mini-MFRC522 Communication Failure and Firmware Version 0x0 = unknown Sensors	3	100	April 23, 2024
MFRC RC522 not communicating with arduino uno Project Guidance	17	110	April 15, 2024
Arduino & RFID RC522 - Communication Failure Project Guidance	15	15621	May 5, 2021
MFRC-522 and Arduino Uno Programming Questions	14	2519	May 5, 2021
Problem Interfacing MFRC-522 rfid module with Arduino UNO Sensors	1	1392	May 6, 2021