I am trying to implement more then 4 RFID readers While using a ATmega2560 and from what i understand you have to have a single serial port dedicated to each RFID reader now my question is how would i go about creating a system that would be able to use more then 4 ....
My first thought it useing a multiplexer IE 8:1... 16:1 and just running it to a single serial port but i am not sure what that would take...