Xadow - NFC Tag

Introduction

Xadow - NFC Tag is a highly integrated Near Field Communication Tag module, this module is I2C interface, which base on M24LR64E-R,M24LR64E-R have a 64-bit unique identifier and 64 -Kbit EEPROM.Xadow - NFC Tag attach an independent PCB antenna which can easily stretch out of any enclosure you use, leaving more room for you to design the exterior of your project.

Specification

Working Voltage:5V or 3V3
Working Current<1mA
2CM max effective range
Serve for contactless communication at 13.56MHz
ISO 15693 and ISO 18000-3 mode 1 compatible
64-bit unique identifier (UID)
Read Block & Write (32-bit blocks)
I2C Interface

Usage

Read/Write by Mobile

Download NfcV-reader for Androud and install it
We can Read/Write it by Mobile

3.Place your phone close to a tag.

Control LED

Download NfcV-reader for Android and install it
Download NFC Tag Librename it to NFC_Tag_M24LR6E and put it into Arduino's library .
Open Arduino IDE. If Arduino IDE is already opened, restart it.
In Arduino IDE, click menus: File -> Example -> NFC_Tag_M24LR6E -> ledControl
Now,you can control LED by you phone.

 
#include "NfcTag.h"
#include <Wire.h>
 
NfcTag nfcTag;
int led = 5;
bool flag = false;
bool preFlag = false;
void setup(){
  Serial.begin(9600);
  pinMode(led,OUTPUT);
  nfcTag.init();
}
 
void loop(){
  flag = nfcTag.readByte(EEPROM_I2C_LENGTH-1) == 0xff?true:false;
  if(flag != preFlag){
    Serial.println("get remote NFC control signal!");
    if(flag == true){
      Serial.println("led will light up!");
      digitalWrite(led,HIGH);
    }else{
      Serial.println("led will turn dark!");
      digitalWrite(led,LOW);
    }
    preFlag = flag;
  }
  delay(5*1000);
}