Arduino Forum

Development => Other Hardware Development => Topic started by: priya123 on Apr 05, 2011, 11:10 am

Title: Interfacing Arduino Pro Mini with RFID and GSM
Post by: priya123 on Apr 05, 2011, 11:10 am
Hello
I have just started using arduino, so have a lot of doubts coming up.
I am interfacing pro mini with RFID ID-2 with external antenna...
I am using the Wire library.
I wanted to know how do I find out the
address of the RFID; the length ; the reset reader and checksum which is to be given in the code as follows :
eg:

  Wire.beginTransmission(0x42);      // the RFID reader's address is 42
  Wire.send(0x01);                   // Length
  Wire.send(0x80);                   // reset reader
  Wire.send(0x81);                   // Checksum
  Wire.endTransmission();
could you help me out.
Title: Re: Interfacing Arduino Pro Mini with RFID and GSM
Post by: PaulS on Apr 05, 2011, 12:37 pm
Quote
I am interfacing pro mini with RFID ID-2 with external antenna...
I am using the Wire library.

Why? The reader is intended to be connected to a serial port. You can use NewSoftSerial and any pair of digital pins to read data from the device.

The checksum is output by the reader, based on the card presented. It is not an input value.