Send RFID to Blynk Terminal

Need Help With My Project
1

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.

2

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

3 
#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);
  }
}
4

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() . . .