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RDM8800+SIM900: Read NFC Tag and Send Its ID Number to Your Phone via SMS


(If you find the video is blur, please make sure you've choosen the right resolution 480P.)

RDM8800 card reader is a module based on PN532 chip customized for 13.56MHz NFC RFID card, compatible with RDM6300 interface, which can read data directly from the serial interface. Unlike ordinary RFID modules, RDM8800 integrates a MCU LGT8FF8A, thus we can modify the firmware to suit our own needs.

Every NFC tag has is own ID number. In this blog, we will demonstrate an experiment of uploading a demo to RDM8800 so that it can read NFC tag and send the ID number to smartphone via massage.

Components

Steps:

Upload the demo into RDM8800

1. Connect FOCA to RDM8800 based on the following picture. Attention: Turn the FOCA’s switch to 5V.

2. Download the hardware support package here, and uncompass it into the directory Arduino\hardware

3. Download the library files and needed demo:

RDM8800 library file
RDM8800+SIM900 demo

Extract the files into the directory Arduino\libraries, then open the demo via Arduino IDE.

4. Choose Tools->Board->Iteaduino Lite, Tools->Serial Port->COM7 respectively, and then type your phone number into the line: char number[20]= “123456789”; //phone number


5. Pull out all the dupont lines.

Connect SIM900 Module

1. Connect FOCA, RDM8800 and SIM900 together according to the following picture.

2. Plug an available backup SIM card into the SIM900 module. Connect the NFC antenna board to RDM8800’s IPX plug, and then access the power into FOCA.

3. When you see the NET LED on-board start flickering, you’d better wait more 10 seconds to tap NFC tag with the NFC antenna board. Moreover, it’ll take some time to receive the massage with the content of NFC ID number after you tap the NFC tag with NFC antenna board. The message’s content you receive looks like this “card: 0046553491” for the output format has been set as “card: ID number”. The NFC reader can read the same ID number every 2 seconds.