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# MFRC522 i2c
### Code is compatible to Arduino and ESP8266 (NodeMCU)
Tested on [https://electronics.semaf.at/MFRC522-i2c-Tiny-Breakout-Board](https://electronics.semaf.at/MFRC522-i2c-Tiny-Breakout-Board)
![MFRC522 i2c Breakout Board](https://cdn.semaf.at/media/image/product/1748/md/mfrc522-i2c-tiny-breakout-board.jpg "MFRC522 i2c Breakout Board")
__Set the Pin for the RST and i2c address!__
```c++
#define RST_PIN 6 // Arduino UNO