Hi all, I just want reconfirm that all digital i/o on the Arduino Mega board can be used to connect RC522 (SS pin) right? Except the pins on board that are used to connect MOSI,MISO and SCK. Because i want to figure out how many readers Arduino Mega 2560 can support.

Multiple RC522 RFID reader on Arduino Mega

alieaaqila September 2, 2021, 7:33am 3

thank you so much sir. You really answering my question.

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