Microcontroller › AVR › Microcontroller to RFID reader › When you swap an rfid tag on
May 8, 2012 at 7:26 am #7618
When you swap an rfid tag on to an rfid reader, it just receives the secret number inside the tag and send to its serial port. From there you can convert it using serial to ttl converter ( MAX232 ) and receive it into the microcontroller and store it in an array. Then you can compare it with any predefined array. That is the basic idea.