RFID Readeing Problem.PLEASE help me

[diroshan]

here is my coding for reading rfid tag. but it give result as “þþþþþþþþþþþþ” on serial monitor 

pls give solution to solve this problom

 

 

 

 

 

 

 

 

#include <SoftwareSerial.h>

SoftwareSerial RFID(10, 11);

 

String tag;

 

void setup()

{

 

  Serial.begin(9600);

  Serial.println(“Serial Ready”);

 

  RFID.begin(9600);

  Serial.println(“125khz RFID Ready”);

  Serial.println(“Waiting for a Tag…”);

}

 

char c;

 

void loop(){

    while(RFID.available()>0){

    c=RFID.read();

    tag += c;

  }

tag=tag.substring(1,13);

while(tag.length()>0){

Serial.println(“Tag Detected”); Serial.print(“ID: “); Serial.println(tag);

tag=””;

delay(2000);

Serial.println(“Waiting for a Tag…”);

tag=””;

}

delay(1000);

tag=””;

}

 

 

 

 

[diroshan]

i used this rf id reader
 

wysiwyg_imageupload:12737:wysiwyg_imageupload:12738:

[ravi]

May i know which RFID module you have used…Is it EM18 reader module…..Or is it giving TTL output  or RS232…?

[SUDHANSHU AGRAHARI]

i think you are using aurduino..

so first tell which aurdino board u r using bt before that check the pin configuration of rs232 with tx and rx pin and with max 232.

[Author]

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