Print PDF
Favorite
Email
Step 6Connect RF reader
If you use a Seeed studio RDM630:
Connect the TX pin of the RDM630 to the RX (pin 0) of the Arduino
Connect the +5V pin of the RDM630 to the +5V of the Arduino
Connect the GND to the GND of the Arduino
I ended up using the RDM630 because I wanted to add my own antenna (see next step). However, I have also used an ID-20 (ID Innovations) which has a built-in antenna. Because of its limited range it is less tolerant to variations in the position of the tag on the animal's collar, but it still works.
If you use an ID-20 (ID-innovations):
Connect the +5V pin and RES pin of the ID-20 to the +5V of the Arduino
Connect the GND pin and FMT pin of the ID-20 to GND of the Arduino
Connect the D0 pin of the ID-20 to RX (pin 0) of the Arduino
I do not need to communicate anything back to the reader, therefore I only use pin D0.
The code for both readers is the same. I basically copied it from this source: http://www.arduino.cc/playground/Code/ID12
It is not exactly clear who wrote it. Now you can test whether the reader works by first writing an Arduino sketch that has only this function plus something that uses the output value to toggle an LED, as in the code you find here. By the way, for my application I did not need to distinguish between tags, so the door is opened for ANY tag (i.e. when RFID returns a 1), but the code does extract the actual tag value so you could modify it to do more sophisticated processing.
When you put the tag on the animal's collar, try to make it so that the plane of the tag is most likely to be in parallel to the plane of the antenna.
my code
Useful sites about using RFID readers with Arduino: http://www.tigoe.net/pcomp/code/category/PHP/347 http://www.practicalarduino.com/projects/rfid-access-control-system
Connect the TX pin of the RDM630 to the RX (pin 0) of the Arduino
Connect the +5V pin of the RDM630 to the +5V of the Arduino
Connect the GND to the GND of the Arduino
I ended up using the RDM630 because I wanted to add my own antenna (see next step). However, I have also used an ID-20 (ID Innovations) which has a built-in antenna. Because of its limited range it is less tolerant to variations in the position of the tag on the animal's collar, but it still works.
If you use an ID-20 (ID-innovations):
Connect the +5V pin and RES pin of the ID-20 to the +5V of the Arduino
Connect the GND pin and FMT pin of the ID-20 to GND of the Arduino
Connect the D0 pin of the ID-20 to RX (pin 0) of the Arduino
I do not need to communicate anything back to the reader, therefore I only use pin D0.
The code for both readers is the same. I basically copied it from this source: http://www.arduino.cc/playground/Code/ID12
It is not exactly clear who wrote it. Now you can test whether the reader works by first writing an Arduino sketch that has only this function plus something that uses the output value to toggle an LED, as in the code you find here. By the way, for my application I did not need to distinguish between tags, so the door is opened for ANY tag (i.e. when RFID returns a 1), but the code does extract the actual tag value so you could modify it to do more sophisticated processing.
When you put the tag on the animal's collar, try to make it so that the plane of the tag is most likely to be in parallel to the plane of the antenna.
my code
Useful sites about using RFID readers with Arduino: http://www.tigoe.net/pcomp/code/category/PHP/347 http://www.practicalarduino.com/projects/rfid-access-control-system
| « Previous Step | Download PDFView All Steps | Next Step » |
 |
Add Comment
|
