# Grove NFC Tag

![](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/img/Grove-NFC_Tag_uasge.jpg)

Grove - 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.Grove - 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.

[![](https://raw.githubusercontent.com/SeeedDocument/common/master/Get_One_Now_Banner.png)](http://www.seeedstudio.com/Grove-NFC-Tag-p-1866.html)

## Specifications

* Working Voltage:5V or 3V3
* Working Current<1mA
* Effective range<2cm
* 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)
* Grove I2C Interface

!!!Tip More details about Grove modules please refer to [Grove System](http://wiki.seeed.cc/Grove_System/)

### Platforms Supported

## Usage

### Read/Write from Mobile

1. Download [NfcV-reader for Android](https://github.com/Seeed-Studio/NFC_Tag_M24LR6E/blob/master/Resources/NfcVreader.apk) and install it
2. We can Read/Write it from Mobile

![](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/img/NFC_Tag_1.png)

![](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/img/NFC_Tag_2.jpg)

![](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/img/NFC_Tag_3.jpg)

![](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/img/NFC_Tag_4.png)

### Control LED

1. Hardware Installation

![](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/img/Grove-NFC_Tag_Photo.jpg)

1. Download [NfcV-reader for Android](https://github.com/Seeed-Studio/NFC_Tag_M24LR6E/blob/master/Resources/NfcVreader.apk) and install it
2. Download [NFC Tag Lib](https://github.com/Seeed-Studio/NFC_Tag_M24LR6E), rename it to NFC\_Tag\_M24LR6E and put it into Arduino's library .
3. Open Arduino IDE. If Arduino IDE is already opened, restart it.
4. In Arduino IDE, click menus: File -> Example -> NFC\_Tag\_M24LR6E -> ledControl
5. Now, you can control LED from your 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);
}
```

### Resources

* [Grove - NFC Tag.PDF](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/res/Grove-NFC_Tag_v1.0.pdf)
* [Grove - NFC Tag Eagle file](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/res/Grove-NFC_Tag_v1.0.zip)
* [M24LR64E-R datasheet.pdf](https://raw.githubusercontent.com/SeeedDocument/Grove-NFC_Tag/master/res/M24LR64E-R.pdf)
* [NfcV-reader for Android](https://github.com/Seeed-Studio/NFC_Tag_M24LR6E/blob/master/Resources/NfcVreader.apk)
* [NFC Tag M24LR6E Lib](https://github.com/Seeed-Studio/NFC_Tag_M24LR6E)


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