I am making a project designed to monitor the size of a queue of cars with RFID tags attached by using 2 RFID readers, one for entry into the queue and the second for exit.
The reader I am using is the ID-12LA RFID Reader ID-12LA (125 kHz) - SEN-11827 - SparkFun Electronics
Connecting one reader works perfectly and is working exactly as planned.
However I am having problems connecting two readers. I am using the library provided here Arduino RFID ID-12/20 Library - YouTube
The program allowed me to create two different instances of an RFID reader but when uploaded only one of them worked.
Is there a proper way I'm supposed to to this that I've missed? All examples available only involve a single reader.