Code and diagram available

Lector-de-tarjeta-RFID_RC522-con-Arduino.ino

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+/*
+  Created by TEOS
+  Domotic with Arduino https://goo.gl/btZpjs
+  YouTube https://goo.gl/k7TUSZ
+  Instagram https://goo.gl/zEIjia
+  Facebook https://goo.gl/eivraR
+  Twitter https://goo.gl/du5Wgn
+  Github https://goo.gl/Xl5IiS
+  WEB https://www.proyecto-teos.com
+*/
+
+#include <SPI.h>
+#include <MFRC522.h> //https://github.com/miguelbalboa/rfid
+
+MFRC522 mrfInstanceT(10, 9);
+uint8_t myTagIDT[4] = {0xCA, 0x04, 0x1F, 0xCE};
+String resultSerialT;
+
+void setup() {
+  Serial.begin(9600);
+  SPI.begin();
+  mrfInstanceT.PCD_Init();
+  resultSerialT = "Coloque el TAG en el lector de tarjeta.";
+  Serial.println(resultSerialT);
+}
+
+void loop() {
+  if (mrfInstanceT.PICC_IsNewCardPresent()) {
+    if (mrfInstanceT.PICC_ReadCardSerial()) {
+      resultSerialT = (comparisonTagT(mrfInstanceT.uid.uidByte, myTagIDT, 4)) ? "TAG conocido" : "TAG desconocido";
+      Serial.println(resultSerialT);
+      mrfInstanceT.PICC_HaltA();
+    }
+  }
+  delay(500);
+}
+
+bool comparisonTagT(uint8_t* incomingTagT, uint8_t* currentTagT, uint8_t length) {
+  for (uint8_t indexT = 0; indexT < length; indexT++) {
+    if (incomingTagT[indexT] != currentTagT[indexT])
+      return false;
+  }
+  return true;
+}

README.md

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-# Lector-de-tarjeta-RFID_RC522-con-Arduino
-En esta ocasión trabajaremos con el lector de tarjetas RFID MIFARE RC522 utilizando Arduino.
+# Lector de tarjeta RFID RC522 con Arduino
+En esta ocasión trabajaremos con el lector de tarjetas RFID MIFARE RC522 utilizando Arduino.
+
+### Requisitos
+- Tener el IDE de [Arduino](https://www.arduino.cc/en/Main/Software) (o el de tu preferencia) con la versión más actual
+- Contar con las librería [MFRC522](//https://github.com/miguelbalboa/rfid)
+- Tener el material para hacer el proyecto
+
+### Código
+**[Aqui](https://github.com/proyectoTEOS/Lector-de-tarjeta-RFID_RC522-con-Arduino/blob/master/Lector-de-tarjeta-RFID_RC522-con-Arduino.ino)** podrás obtener el link del código, también dejaremos
+una vista previa aquí abajo.
+
+```c++
+/*
+  Created by TEOS
+  Domotic with Arduino https://goo.gl/btZpjs
+  YouTube https://goo.gl/k7TUSZ
+  Instagram https://goo.gl/zEIjia
+  Facebook https://goo.gl/eivraR
+  Twitter https://goo.gl/du5Wgn
+  Github https://goo.gl/Xl5IiS
+  WEB https://www.proyecto-teos.com
+*/
+
+#include <SPI.h>
+#include <MFRC522.h> //https://github.com/miguelbalboa/rfid
+
+MFRC522 mrfInstanceT(10, 9);
+uint8_t myTagIDT[4] = {0xCA, 0x04, 0x1F, 0xCE};
+String resultSerialT;
+
+void setup() {
+  Serial.begin(9600);
+  SPI.begin();
+  mrfInstanceT.PCD_Init();
+  resultSerialT = "Coloque el TAG en el lector de tarjeta.";
+  Serial.println(resultSerialT);
+}
+
+void loop() {
+  if (mrfInstanceT.PICC_IsNewCardPresent()) {
+    if (mrfInstanceT.PICC_ReadCardSerial()) {
+      resultSerialT = (comparisonTagT(mrfInstanceT.uid.uidByte, myTagIDT, 4)) ? "TAG conocido" : "TAG desconocido";
+      Serial.println(resultSerialT);
+      mrfInstanceT.PICC_HaltA();
+    }
+  }
+  delay(500);
+}
+
+bool comparisonTagT(uint8_t* incomingTagT, uint8_t* currentTagT, uint8_t length) {
+  for (uint8_t indexT = 0; indexT < length; indexT++) {
+    if (incomingTagT[indexT] != currentTagT[indexT])
+      return false;
+  }
+  return true;
+}
+```
+
+### Diagrama
+El siguiente esquemático muestra como se debe conectar todos los componentes con la placa.
+![](https://github.com/proyectoTEOS/Lector-de-tarjeta-RFID_RC522-con-Arduino/blob/master/lector-de-tarjeta-rfid_rc522-con-arduino-5.jpg)