RFID RC522の使い方：Arduinoでカードを読み取り、カード式ドアロックを作る

1#include <SPI.h>
2#include <MFRC522.h>
3
4const int SS_PIN = 10;
5const int RST_PIN = 9;
6
7MFRC522 rfid(SS_PIN, RST_PIN);
8
9void setup() {
10  Serial.begin(9600);
11  SPI.begin();
12  rfid.PCD_Init();
13  Serial.println("Kartı okutun / scan a card");
14}
15
16void loop() {
17  if (!rfid.PICC_IsNewCardPresent() || !rfid.PICC_ReadCardSerial()) return;  // kart yok / no card
18
19  Serial.print("UID:");
20  for (byte i = 0; i < rfid.uid.size; i++) {
21    Serial.print(rfid.uid.uidByte[i] < 0x10 ? " 0" : " ");
22    Serial.print(rfid.uid.uidByte[i], HEX);
23  }
24  Serial.println();
25
26  rfid.PICC_HaltA();        // kartı beklemeye al / halt the card
27  rfid.PCD_StopCrypto1();
28}

1// yukarıdaki tanımlar ve setup() aynen / definitions and setup() as above
2byte allowed[4] = {0xDE, 0xAD, 0xBE, 0xEF};   // kendi kartının UID'si / your card's UID
3
4bool isAllowed() {
5  if (rfid.uid.size != 4) return false;
6  for (byte i = 0; i < 4; i++) {
7    if (rfid.uid.uidByte[i] != allowed[i]) return false;
8  }
9  return true;
10}
11
12void loop() {
13  if (!rfid.PICC_IsNewCardPresent() || !rfid.PICC_ReadCardSerial()) return;
14  Serial.println(isAllowed() ? "İzin verildi / access granted" : "Reddedildi / access denied");
15  rfid.PICC_HaltA();
16  rfid.PCD_StopCrypto1();
17}

1#include <SPI.h>
2#include <MFRC522.h>
3#include <Servo.h>
4
5MFRC522 rfid(10, 9);       // SS, RST
6Servo lock;
7const int BUZZER_PIN = 8;
8byte allowed[4] = {0xDE, 0xAD, 0xBE, 0xEF};
9
10void setup() {
11  SPI.begin();
12  rfid.PCD_Init();
13  lock.attach(6);
14  lock.write(0);                          // kilitli / locked
15}
16
17void loop() {
18  if (!rfid.PICC_IsNewCardPresent() || !rfid.PICC_ReadCardSerial()) return;
19  bool ok = rfid.uid.size == 4 && memcmp(rfid.uid.uidByte, allowed, 4) == 0;
20  if (ok) {
21    lock.write(90);                       // kilidi aç / unlock
22    delay(3000);
23    lock.write(0);                        // tekrar kilitle / lock again
24  } else {
25    tone(BUZZER_PIN, 400, 600);           // reddedildi sesi / denied beep
26  }
27  rfid.PICC_HaltA();
28  rfid.PCD_StopCrypto1();
29}

1from mfrc522 import MFRC522      # mfrc522.py Pico'da olmalı / mfrc522.py must be on the Pico
2import time
3
4reader = MFRC522(spi_id=0, sck=18, miso=16, mosi=19, cs=17, rst=20)
5
6while True:
7    reader.init()
8    stat, tag_type = reader.request(reader.REQIDL)
9    if stat == reader.OK:
10        stat, uid = reader.SelectTagSN()
11        if stat == reader.OK:
12            print("UID:", "".join("{:02X}".format(b) for b in uid))
13    time.sleep_ms(200)