i already attach picture of connection of rfid to arduino.
im just started this project. i take this circuit from another project but it is not working and i dont know how to troubleshoot.
i used RS 485 ic ( http://my.element14.com/exar/sp485eep-l/transceiver-rs-485-dip8-5v-485/dp/9387188?ref=lookahead )
Also have you shorted the green and grey wires together?
yes, i already shorted.
