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CupRFIDReaderResearch  
Updated Oct 27, 2013 by rijadsul...@gmail.com

Research

Features of the ID-12LA

  • Detection range of 12 cm (around 5 inches)
  • Supports ASCII, Wiegand26 and Magnetic ABA Track2 data formats
  • 125 kHz nominal frequency
  • 2 data pins
  • Operates from 2.8V to 5.5V at 30 mA
  • Internal Antenna

ID-12LA RFID reader, above

Circuit Diagram

Block Diagram

Alternatives

A. Bluetooth

  • Would also give the cup the ability to detect/identify the nearest fount
  • No line-of-sight required
  • Would be more expensive
  • Benefits like 2 way communication, larger transmission range, and phone compatibility not needed

Pseudo Code

checkSum_TAG1 = //sum of ID of tag 1;
checkSum_TAG2 = //sum of ID of tag 2;
tagDATA = 0;
while(1)
{
 //check for Tag detected
 if(tag_Deteceted ==1)
 {
tagDATA = //data from tag
 int tagDataSum = checksum(TagDATA)//sum up ASCII bits from tag data
 
if(tagDataSum == checkSum_TAG1)
 {
 //send value 1 to Main Code
 tagDATA = 0;
 
 if(tagDataSum == checkSum_Tag2)
 {
 //send value 2 to Main Code
 tagDATA = 0;
 } 
 
 }
}

References

1. a1ronzo, “RFID USB Starter Kit Quick Start Guide”, online January 12, 2011, https://www.sparkfun.com/tutorials/243 (Accessed 23 September 2013)

2. Indika, “Difference between RFID and Bluetooth”, online, May 18, 2011, http://www.differencebetween.com/difference-between-rfid-and-vs-bluetooth/ (Accessed Sept 22, 2013)

3. Vassilis Kostakos, “The privacy implications of Bluetooth”, M.S Thesis, University of Madeira / Carnegie Mellon University

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