Hi guys,
I'm kinda new to this whole thing, so please excuse the lack of experience. Anyway, I was trying to understand this pdf on using an RFID Reader:
http://www.seeedstudio.com/depot/datasheet/RDM630-Spec..pdf
I'm going to use the TTL Interface mode, but I can't understand the CHECKSUM part. I've read up on CHECKSUM and XOR, but I can't see what the key to the XOR is.
Any assistance will be greatly appreciated! 