Serial.println();
Introduction The RC522 is arguably the most popular RFID/NFC module for hobbyists and engineers working with Arduino, PIC, and AVR microcontrollers. Its low cost (often under $5) and ability to read and write 13.56MHz Mifare Classic cards make it a staple in access control, inventory systems, and smart locking mechanisms. rc522 proteus library
void setup() Serial.begin(9600); SPI.begin(); mfrc522.PCD_Init(); Serial.println("Scan a virtual card..."); Serial
void loop() // Look for new cards if (!mfrc522.PICC_IsNewCardPresent()) return; Serial.println("Scan a virtual card...")
// Halt PICC mfrc522.PICC_HaltA(); delay(1000);
// Select one card if (!mfrc522.PICC_ReadCardSerial()) return;