RFIDuino Demo 4 - Wireless Communication with XBees

If you haven't already, make sure to go through the RFIDuino Getting Started Guide to get your libraries and hardware setup.


This Project will use the same code as RFIDuino_helloworld. This time however, we will be sending the data over the computer wirelessly using 2 XBees and a UartSBee.

Hardware Required


  1. Load the RFIDuino_helloworld3 sketch onto your arduino. You can find this sketch under
    NOTE:You cannot program the Arduino if the XBee is connected. Remove the Xbee or shield when you are programming your Arduino.
  2. Connect your components as shown here.(see here for 1.1 wiring) b_500_500_16777215_00__images_tutorials_rfiduino_RFIDuino-xbee2-1.2_bb.png
  3. R
  4. Connect the UartSBee to your computer via USB. This device will show up as a serial port in the Arduino IDE. Pick that serial port and open a serial terminal.
  5. Attach your RFIDuino to an external power supply like a battery or power brick.
  6. Swipe the 'key' tag across the Rfiduino antenna. The green light will light up and your buzzer will sound. The RFIDuino will also transmit the ID to your computer via the XBee.
  7. Check your serial terminal on your computer. You should will see the tag IDs just as if you had your RFIDuino plugged into your computer.


Normally the Arduino uses pins 0(RX) and 1(TX) to communicate with the computer. With our new hardware setup, the XBee will take those pins and use them to transmit wirelessly. The second xbee will pick up that communication and relay it to the computer via the Xbee.

Tag ID

This tutorial shows the basics of sending data via xbee. However, there are better ways to format and send data over the XBee chanlle. You can see this page for more information.

RFIDuino Functions used in this example

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