@BartE said:

@Michał-Owsianka Yes

@BartE said:

pin 7 (iso 9) for CE
pin 8 (iso 10) for CSN/CS

Pin 7 CE == RST
Pin 8 CSN/CS == SDA

The init part of the code can be found in my earlier post
The rest of the library is taken from the mfrc522 example code. https://github.com/miguelbalboa/rfid

To share my Sketch i do need to cleanup and test again the Sketch because it does (much) more. Like reading temperature and air pressure.

Thanks a lot!

@BartE Can you tell me where connect SDA, RST from RC522 module? i cant find information about alternative names on that pins... also can you share code for nrf24+rc522?