Oh I see what you mean man. Sweet. So I can just remove that while loop and then It should be perfect?

I don't think so, cause what I want it to do is, it scans a tag, when it gets a valid code(12 digits) it performs a task. In my code it is the (found) if statement for finding it true that it exists.
Now after that, that while loop happens and cleans up any mess(that buffer/repeating problem I had) so it will clear the RFID buffer? So yes it is data, but it is data I already used. Does it make sense? Do you think there is a better way of doing it?

Thanks

UKHeliBob yeah isnt that what my while loop was suppose to do? Discarding the buffer.

Grumpy_Mike I think that is what the problem is. Like when I scan the tag it picks it up a few times. Arduino handles the first one with that 3sec delay now after the delay it goes and read again from the RFID(which has the tag id a few more times?)
Then it outputs it like 3 or more times after the tag has been removed.
So it doesnt continuously sends it just 3 or 4 times after the tag has been removed then stops.

But for some mirycal it is working perfectly now havnt had any problems yet.
Thanks

Oh wow nevermind the problem still occur.

Is it possible to clear to buffer after I got a first reading of my card/tag?
So that it won't keep printing afterwards like pause for 3 seconds and then be able to read cards from scratch and repeat*

My bad I get now what you meant by the buffer!

The program printed the card/tag a few times after it was removed(still in the buffer i guess?) that was my initial error and I fixed it by adding this while loop at the end!

Code:

#include <SoftwareSerial.h>

SoftwareSerial mySerial(11, 12);

boolean found=true;
char c;
String msg = "";

void setup() 
{
  Serial.begin(9600);
  Serial.println("Serial Ready");

  mySerial.begin(9600);
  Serial.println("RFID Ready");
}

void loop()
{
  while(mySerial.read() != -1)
  {
   
    while(mySerial.available()>0){
      c=mySerial.read();
      msg += c;
      if(msg.length() == 12)
        break;
    }
   
   
    Serial.println("Gate Open");
    Serial.println("ID: "+msg);
    if(found)
    {
      msg = "";
      delay(3000);
    }
    while(mySerial.read() != -1) {}; //This one to clear the buffer?
  }
}

Many thanks!!

Hello Arduino world,

I have a RFID reader (http://robotics.org.za/index.php?route=product/product&path=114_96&product_id=243)
and
Arduino UNO R3

I connected it like the following instructable
http://www.instructables.com/id/Arduino-and-RFID-from-seeedstudio/?ALLSTEPS

This is my code

Code:

#include <SoftwareSerial.h>

SoftwareSerial mySerial(11, 12);

void setup() 
{
  Serial.begin(9600);
  Serial.println("Serial Ready");

  mySerial.begin(9600);
  Serial.println("RFID Ready");
}

void loop()
{
  if(mySerial.available()>0)
    Serial.print("Reading");
}

Now my problem is when I open my Serial Monitor, It gives me Serial Read and RFID Ready.
Thats all good.
Now when I first scan my card/tag I get Reading printed over and over but when I remove my card/tag it still prints Reading? Why is that?
I understand that .available function reads when my card/tag is nearby and should stop reading if my card/tag is removed but I am wrong and I have tried many things now.
Can anyone send me in some new direction to help me out.

Kind Regards
Jaco