from mfrc522 import MFRC522 import utime reader = MFRC522(spi_id=0,sck=2,miso=4,mosi=3,cs=1,rst=0) print("Bring TAG closer...") print("") while True: reader.init() (stat, tag_type) = reader.request(reader.REQIDL) if stat == reader.OK: (stat, uid) = reader.SelectTagSN() if stat == reader.OK: card = int.from_bytes(bytes(uid),"little",False) print("CARD ID: "+str(card)) utime.sleep_ms(500)