RFID-RC522 Case

thingiverse

Simple Example of RFID-RC522 Reader/Writer Operation This example demonstrates how to use an RFID RC522 reader/writer module with an Arduino board. First, you'll need to connect the module to your Arduino board as follows: * SDA pin on the RFID module to digital pin 20 on the Arduino * SCK pin on the RFID module to digital pin 21 on the Arduino * MOSI pin on the RFID module to digital pin 19 on the Arduino * MISO pin on the RFID module to digital pin 18 on the Arduino * GND pin on the RFID module to ground on the Arduino * VCC pin on the RFID module to power on the Arduino Next, you'll need to include the MFRC522 library in your Arduino sketch. This library provides a simple interface for interacting with the RFID reader/writer. Here is an example of how to use the RFID RC522 reader/writer module: ```cpp #include <SPI.h> #include <MFRC522.h> const int RST_PIN = 9; const int SS_PIN = 10; MFRC522 mfrc522(SS_PIN, RST_PIN); void setup() { Serial.begin(9600); SPI.begin(); mfrc522.PCD_Init(); } void loop() { if (mfrc522.PICC_IsNewCardPresent()) { if (mfrc522.PICC_ReadCardSerial()) { String cardID = ""; for (byte i = 0; i < mfrc522.uid.size; i++) { cardID += String(mfrc522.uid.uidByte[i], HEX); } Serial.println(cardID); } } } ``` This example will print the ID of any RFID tag that comes into range. You can modify this code to suit your specific needs, such as storing the ID in a database or using it to unlock a door. Note: This is just a simple example and you may need to add error checking and handling code depending on your application.