İ made this project but i have a problem
İts working good but it cant register slave tag to eeprom so when the powered off deleted all tags.
The mfrc522 librarary access control example is good for me but i coundt find circuit for arduino nano anyone help me
So, is it the Nano-specific wiring you need help with?
That article already illustrates a Nano. Exactly what circuit do you want?
The circuit given omits level conversion to the MFRC522. Not good! 
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