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Topic: Interface Blynk with Arduino UNO, Bluetooth HC-05, AD8232 Heart Monitor Sensor (Read 65 times) previous topic - next topic


Hey Guys!

I'm working on a project that allows early Heart Attack Detection and Heart Rate Monitor. I opt-ed to use Blynk as the IoT platform for the mobile app development.

However, I started to have problems displaying the heart rate data in the mobile app via Blynk connecting using Bluetooth, but I could display it perfectly well on Arduino platform.

Hope you guys could help to solve the Blynk interface part.
Thank you!

Below is the code:

#define BLYNK_PRINT Serial

#include <SoftwareSerial.h>
SoftwareSerial SwSerial(0, 1); // RX, TX
#include <BlynkSimpleSerialBLE.h>
#include <SoftwareSerial.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "9dd15340ef6749e890405775c********";

SoftwareSerial SerialBLE(0, 1); // RX, TX

BlynkTimer timer;
int sensorData;
// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void myTimerEvent()
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  sensorData = analogRead(A0);
  Blynk.virtualWrite(V5, sensorData);

void setup()
  // Debug console

  Blynk.begin(SerialBLE, auth);

  Serial.println("Waiting for connections...");

  // Setup a function to be called every second
  timer.setInterval(1000L, myTimerEvent);

void loop()
  timer.run(); // Initiates BlynkTimer

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