Ensure you connect the Arduino 3.3V pin to the RC522 VCC, though in Proteus simulation, 5V often works without error messages.
Once installed, you can find the component by pressing 'P' in the schematic capture window and searching for "RC522." rc522 proteus library updated
MFRC522 mfrc522(SS_PIN, RST_PIN);
| RC522 Pin | Arduino Uno Pin | Proteus Net Label | | :--- | :--- | :--- | | SDA (SS) | Digital 10 | SS | | SCK | Digital 13 | SCK | | MOSI | Digital 11 | MOSI | | MISO | Digital 12 | MISO | | IRQ | Not connected | | | GND | GND | GND | | RST | Digital 9 | RST | | 3.3V | +3.3V (Uno's 3.3V out) | +3.3V | Ensure you connect the Arduino 3