RFID,NFC Module(RC522): 두 판 사이의 차이
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잔글편집 요약 없음 |
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| 4번째 줄: | 4번째 줄: | ||
It can be used with Arduino and Raspberry Pi boards. | It can be used with Arduino and Raspberry Pi boards. | ||
== '''Specifications''' == | == '''Specifications''' == | ||
| 11번째 줄: | 12번째 줄: | ||
* Interface: SPI | * Interface: SPI | ||
* Operating Frequency: 13.56MHz | * Operating Frequency: 13.56MHz | ||
== '''Hardware''' == | == '''Hardware''' == | ||
| 17번째 줄: | 19번째 줄: | ||
* RC522, NFC card/key | * RC522, NFC card/key | ||
* Jumper cables | * Jumper cables | ||
== '''Connection''' == | == '''Connection''' == | ||
| 52번째 줄: | 55번째 줄: | ||
=== [[Arduino Libraries]] === | === [[Arduino Libraries]] === | ||
== '''Example Code''' == | == '''Example Code''' == | ||
| 88번째 줄: | 92번째 줄: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=== Execution Result === | === Execution Result === | ||
[[File:RC522 실행결과.png|center|class=coders100]] | [[File:RC522 실행결과.png|center|class=coders100]] | ||
2025년 3월 21일 (금) 16:55 판
This is an RFID reader utilizing NFC communication method.
It can be used with Arduino and Raspberry Pi boards.
Specifications
- Operating Voltage: 3.3V
- Operating Current: 13mA ~ 26mA
- Interface: SPI
- Operating Frequency: 13.56MHz
Hardware
- Arduino
- RC522, NFC card/key
- Jumper cables
Connection
| RC522 | Arduino | |||||
| 3.3V | 3.3V | |||||
| RST | 9 | |||||
| GND | GND | |||||
| MISO | 12 | |||||
| MOSI | 11 | |||||
| SCK | 13 | |||||
| SDA | 10 | |||||
Libraries
- MFRC522 (by GithubCommunity)
- SPI (default included library)
Arduino Libraries
Example Code
Prints the tagged ID value to the serial monitor.
#include <SPI.h>
#include <MFRC522.h>
#define RST_PIN 9 // Reset pin is set to pin 9
#define SS_PIN 10 // SS pin is set to pin 10
// SS pin is the pin responsible for data exchange (SS = Slave Selector)
MFRC522 mfrc(SS_PIN, RST_PIN); // Creating the mfrc object to utilize the MFR522
void setup() {
Serial.begin(9600); // Serial communication, baud rate is set to 9600
SPI.begin(); // Initializing SPI
// (SPI: Communication method between one master and multiple slaves)
mfrc.PCD_Init(); // Initializing MFRC522
}
void loop() {
if (!mfrc.PICC_IsNewCardPresent() || !mfrc.PICC_ReadCardSerial()) {
// When no tag is detected or ID is not read
delay(500); // 0.5 second delay
return; // Return
}
Serial.print("Card UID:"); // Printing the tag's ID
for (byte i = 0; i < 4; i++) { // Loop to print the tag's ID, up to the tag's ID size (4)
Serial.print(mfrc.uid.uidByte[i]); // Printing from mfrc.uid.uidByte[0] to mfrc.uid.uidByte[3]
Serial.print(" "); // Printing space between IDs
}
Serial.println();
}
Execution Result
