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miguelbalboa / rfid

Arduino RFID Library for MFRC522
The Unlicense
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When detect card wake up other cpu(Ardunio,Esp12,Esp32) ?? #506

Closed honestrock closed 4 years ago

honestrock commented 4 years ago

Hello Did any one try wake up board from mfrc522 when detect card ?

I want to make door open with battery powered.

Rotzbua commented 4 years ago

To the best of my knowledge, that's not possible. The mfrc522 can not detect a card without a running and connected mcu.

For your use case add an button which temporarily activates your system and shutdown it automatically.