Button problems.

You lost me. how do you mean?

I think now what you mean. I use one red and one green LED, and comment all software serial.
The result was that the right rfid tag showed both Red and sometimes green light.

Did you plug the RFID reader into pins 0 and 1?

No I use this:

  • Arduino Digital pin 8 to RFID TX
  • Arduino GND to RFID GND
  • Arduino Digital pin 2 to RFID enable
  • Arduino +5V to RFID Vcc pin.

So, move the RFID TX pin to the RX pin (0 or 1).