RFID Reader producing no output


My ID20LA is producing no serial output. I have no idea what I'm doing wrong.


void setup()
  Serial.begin(9600); // connect to the serial port

void loop ()
  if(Serial.available() > 0)


RFID Breakout to Arduino

VCC and RES to 5V FORM and GND to GND D0 to RX 0

I also have a few other digital pins attached to an LCD. The arduino is powered by a DC 10V 500mA, centre pin-positive adapter.

You are trying to use the same serial port for reading from the reader and writing to the monitor. You need to communicate with the RFID reader with software serial and use the hardware to display stuff in the monitor. You also need to wire up the module so that it outputs TTL serila and not RS232 serial.