I want to create a system so that when a RFID fob is over 12 feet away a circuit will open. The system will be 12 volt DC, and I hope to use a passive tag that can be worn, and is waterproof. I've seen two boards but I don't know which one will do what I want. Looking forward to your questions and a…

Which Board?

sailbj December 19, 2017, 7:26pm 6

Forgot to mention, I have an Uno-3 with RFID 522

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