https://forum.arduino.cc/t/multiple-sm130-rfid-reader-with-an-arduino-uno/220709
multiple sm130 rfid reader with an Arduino Uno - Programming - Arduino Forum
Mar 18, 2014 - I'm trying to read from two sm130 (rfid reader) with an arduino. uno. I'm using the SoftwareSerial library. I've successfully seeing my Mifare tags with the...
rfid readerwith anarduino unomultipleprogramming