The great Folks at the JMRI Users Group at groups.io have made it! Tom Seitz recently posted a bunch of Ardiuno sketches that allow up to eight MFRC522 13.5MHz RFID Readers connected to an Ardiuno Mega to be used as an alternative to a MERG Concentrator. These RC522 readers are dead cheap, selling for less … JMRI – RFID Connectivity weiterlesen