kalsketimer

tu som ukradol kod na citanie RFID kariet

https://randomnerdtutorials.com/esp32-mfrc522-rfid-reader-arduino/

MFRC522 RFID Reader	ESP32	Description	Color
SDA	GPIO 5	SPI signal input, I2C data line, or UART data input	blue
SCK	GPIO 18	SPI clock	brown
MOSI	GPIO 23	SPI data input	grey
MISO	GPIO 19	SPI master-in-slave-out, I2C serial clock, or UART serial output	white
IRQ	Don't connect	Interrupt pin; signals the microcontroller when an RFID tag is nearby	-
GND	GND	Ground connection	black
RST	GPIO 21	LOW signal to put the module in power-down mode; send a HIGH signal to reset the module	yellow
3.3V	3.3V	Power supply (2.5-3.3V)	orange