Arduino with Blynk no quite working

Projects Programming
1

Hi all.

I am using an app called Blynk to run my Mega. I have three temp sensors attached on D44. These are returned to the serial monitor every second. However as soon as I start to integrate the Blink coding, it stops giving me my serial print data.

This is before the Blynk bits...

#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h>

float tempC01, tempC02, tempC03;
//////////// Temperature sensor start //////////// 

// Data wire is plugged into port 12 on the Arduino
#define ONE_WIRE_BUS_PIN 44

OneWire oneWire(ONE_WIRE_BUS_PIN);
DallasTemperature sensors(&oneWire);

DeviceAddress Probe01 = { 0x28, 0x5E, 0x72, 0xC5, 0x06, 0x00, 0x00, 0xA4 }; 
DeviceAddress Probe02 = { 0x28, 0x9F, 0x49, 0x2F, 0x06, 0x00, 0x00, 0xAA };
DeviceAddress Probe03 = { 0x28, 0x7A, 0xFB, 0xC4, 0x06, 0x00, 0x00, 0x79 };

//////////// Temperature sensor end //////////// 

void setup() 
{
  Serial.begin(9600); 
  
  // Initialize the Temperature measurement library
  sensors.begin();
  
  // set the resolution to 10 bit (Can be 9 to 12 bits .. lower is faster)
  sensors.setResolution(Probe01, 10);
  sensors.setResolution(Probe02, 10);
  sensors.setResolution(Probe03, 10); 
}

void loop() 
{ 
  sensors.requestTemperatures();  
  
  tempC01 = sensors.getTempC(Probe01);      // Tank 
  tempC02 = sensors.getTempC(Probe02);      // Sump
  tempC03 = sensors.getTempC(Probe03);      // LEDS
  
  
  Serial.print("Probe 1 (Tank) = ");
  Serial.println(DallasTemperature::toFahrenheit(tempC01));
  
  Serial.print("Probe 2 (Sump) = ");
  Serial.println(DallasTemperature::toFahrenheit(tempC02));
  
  Serial.print("Probe 3 (LEDS) = ");
  Serial.println(DallasTemperature::toFahrenheit(tempC03));
  Serial.println("----------------------");
  delay(1000);
}

This is with the Blynk code mingled in...

#define BLYNK_PRINT Serial1

#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#include <BlynkSimpleStream.h>
char auth[] = "65b59e****************************5f4166";
#define PIN_UPTIME V5

float tempC01, tempC02, tempC03;
//////////// Temperature sensor start //////////// 

// Data wire is plugged into port 12 on the Arduino
#define ONE_WIRE_BUS_PIN 44

OneWire oneWire(ONE_WIRE_BUS_PIN);
DallasTemperature sensors(&oneWire);

DeviceAddress Probe01 = { 0x28, 0x5E, 0x72, 0xC5, 0x06, 0x00, 0x00, 0xA4 }; 
DeviceAddress Probe02 = { 0x28, 0x9F, 0x49, 0x2F, 0x06, 0x00, 0x00, 0xAA };
DeviceAddress Probe03 = { 0x28, 0x7A, 0xFB, 0xC4, 0x06, 0x00, 0x00, 0x79 };

//////////// Temperature sensor end //////////// 

BLYNK_READ(PIN_UPTIME)
{
  // This command writes Arduino's uptime in seconds to Virtual Pin (5)
  Blynk.virtualWrite(PIN_UPTIME, millis() / 1000);
}

void setup() 
{
  Serial.begin(9600); 
  Serial1.begin(9600);
  
  // Initialize the Temperature measurement library
  sensors.begin();
  
  // set the resolution to 10 bit (Can be 9 to 12 bits .. lower is faster)
  sensors.setResolution(Probe01, 10);
  sensors.setResolution(Probe02, 10);
  sensors.setResolution(Probe03, 10);
  
  Blynk.begin(Serial1, auth);
}

void loop() 
{
  Blynk.run();
  
  sensors.requestTemperatures();  
  tempC01 = sensors.getTempC(Probe01);      // Tank 
  tempC02 = sensors.getTempC(Probe02);      // Sump
  tempC03 = sensors.getTempC(Probe03);      // LEDS
  
  Serial.print("Probe 1 (Tank) = ");
  Serial.println(DallasTemperature::toFahrenheit(tempC01));
  
  Serial.print("Probe 2 (Sump) = ");
  Serial.println(DallasTemperature::toFahrenheit(tempC02));
  
  Serial.print("Probe 3 (LEDS) = ");
  Serial.println(DallasTemperature::toFahrenheit(tempC03));
  Serial.println("----------------------");
  delay(1000);
}

This is the line that is causing the problems that I found through trial and error...

Blynk.begin(Serial1, auth);

Any ideas why and how I can resolve this?

Thanks, Steve.

2

What is ACTUALLY connected to the RX1 and TX1 pins?

3

Nothing is physically connected to them.

4

stevelondon2:
Nothing is physically connected to them.

Then, how do you expect Blynk to get data?