16 lines
793 B
Markdown
16 lines
793 B
Markdown
# kalsketimer
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## tu som ukradol kod na citanie RFID kariet
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[https://randomnerdtutorials.com/esp32-mfrc522-rfid-reader-arduino/](https://randomnerdtutorials.com/esp32-mfrc522-rfid-reader-arduino/)
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| MFRC522 RFID Reader | ESP32 | Description |
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|---------------------|-------|-------------|
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| SDA | GPIO 5 | SPI signal input, I2C data line, or UART data input |
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| SCK | GPIO 18 | SPI clock |
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| MOSI | GPIO 23 | SPI data input |
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| MISO | GPIO 19 | SPI master-in-slave-out, I2C serial clock, or UART serial output |
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| IRQ | Don't connect | Interrupt pin; signals the microcontroller when an RFID tag is nearby |
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| GND | GND | Ground connection |
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| RST | GPIO 21 | LOW signal to put the module in power-down mode; send a HIGH signal to reset the module |
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| 3.3V | 3.3V | Power supply (2.5-3.3V) | |