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Send RFID to Blynk Terminal

Hi! I’m trying to make an RFID scanner with Blynk Terminal. All that I have to do is to make the RFID scanner print the UID hex on the RFID tag to the Blynk Terminal.

Hi,

There are plenty of Blynk Terminal Widget examples in the forum. Why don’t you share the code you have so far and we may be able to help?

cul
billd

#define BLYNK_PRINT Serial
#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>


#include <WiFiUdp.h>     //for OTA update
#define BLYNK_PRINT Serial
#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>

String sdata;
char auth[] = "5Sk2Xw-K7XDi3qOVJ02ZaF2dzM9lfZSY";
char ssid[] = "PLDTHOMEFIBRKYv3m";
char pass[] = "PLDTWIFIjFZq3";

#include <Adafruit_MLX90614.h>

#define EspSerial Serial1
#include <SoftwareSerial.h>
SoftwareSerial EspSerial(2, 3); // RX, TX

#define ESP8266_BAUD 9600
ESP8266 wifi(&EspSerial);

#include <SPI.h>
#include <MFRC522.h>

#define RST_PIN         9           // Configurable, see typical pin layout above
#define SS_PIN          10  

MFRC522 rfid(SS_PIN, RST_PIN);
MFRC522::MIFARE_Key key; 

byte nuidPICC[4];

Adafruit_MLX90614 mlx = Adafruit_MLX90614();

int red_light_pin= 4;
int green_light_pin = 5;
int blue_light_pin = 6;
const int buzzer = 8;



void setup() 
{;

  Serial.begin(9600);
  pinMode(7,OUTPUT);
  digitalWrite(7,LOW);

  pinMode(6,OUTPUT);
  digitalWrite(6,LOW);
  
  pinMode(buzzer, OUTPUT); 
  
 
  pinMode(red_light_pin, OUTPUT);
  pinMode(green_light_pin, OUTPUT);
  pinMode(blue_light_pin, OUTPUT);

  EspSerial.begin(ESP8266_BAUD);
  delay(10);
  Blynk.begin(auth, wifi, ssid, pass);
  
  SPI.begin();                                                  // Init SPI bus
 
  Serial.println("ArduTrace by Ace Canacan");  
  mlx.begin();  

  Serial.begin(9600);
  SPI.begin(); // Init SPI bus
  rfid.PCD_Init(); // Init MFRC522 

  for (byte i = 0; i < 6; i++) {
  key.keyByte[i] = 0xFF;


  
  }
  
}

void loop() {

 Serial.begin(9600);
 
  // Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
  if ( ! rfid.PICC_IsNewCardPresent())
    return;

  // Verify if the NUID has been readed
  if ( ! rfid.PICC_ReadCardSerial())
    return;
 
{
    // Store NUID into nuidPICC array
    for (byte i = 0; i < 4; i++) {
      nuidPICC[i] = rfid.uid.uidByte[i];
    }
   
    Serial.print(F("Card Holder: "));
    printHex(rfid.uid.uidByte, rfid.uid.size);
    Serial.println();
  }

  // Halt PICC
  rfid.PICC_HaltA();

  // Stop encryption on PCD
  rfid.PCD_StopCrypto1();

if ( ! rfid.PICC_ReadCardSerial()) 
  {
     delay(0); RGB_color(0, 255, 0); // Red
     delay(1000); RGB_color(0, 0, 0); // Red
     tone(buzzer, 2000); // Send 1KHz sound signal...
     delay(1000);        // ...for 1 sec
     noTone(buzzer);     // Stop sound...
     delay(1000);        // ...for 1sec
}

if ( ! rfid.PICC_ReadCardSerial()) 
  {

     delay(1000); RGB_color(255, 0, 0); // Red
     delay(1500); Serial.print("Card Holder Temp: ");Serial.print(mlx.readObjectTempC()); 
     delay(2500); RGB_color(0, 0, 0); // Red
     tone(buzzer, 2000); // Send 1KHz sound signal...
     delay(1000);        // ...for 1 sec
     noTone(buzzer);     // Stop sound...
     delay(1000);        // ...for 1sec 
}

}
void RGB_color(int red_light_value, int green_light_value, int blue_light_value)
 {
  analogWrite(red_light_pin, red_light_value);
  analogWrite(green_light_pin, green_light_value);
  analogWrite(blue_light_pin, blue_light_value);
}

void printHex(byte *buffer, byte bufferSize) {
  for (byte i = 0; i < bufferSize; i++) {
    Serial.print(buffer[i] < 0x10 ? " 0" : " ");
    Serial.print(buffer[i], HEX);
  }
}

Ohhh Kayyy . . .

Read this first . . .

Second . . . Does your sketch work? Do you get errors? What are they?

cul
billd

PS. You need Blynk.run() in your void Loop() . . .