I am using the https://github.com/miguelbalboa/rfid library to connect my Arduino mega to a RFID RC522 but I am having no luck.
MFRC522 Software Version: 0x0 (unknown) WARNING: Communication failure, is the MFRC522 properly connected? Scan PICC to see UID, type, and data blocks...
I have connected all the pins according to the document. Any ideas what I could have done wrong.
