Project went offline if use Blynk.notify (NO spam server)

Need Help With My Project
1

The project disconnected although “blynk.notify” is in the timer for 5 seconds.

• Arduino UNO + Ai thinker A6
• Blynk server
• Blynk Library version 0.6.5
• TinyGSM Library version 0.7.7


#define TINY_GSM_MODEM_A6

//#define BLYNK_HEARTBEAT 30

#include <TinyGsmClient.h>
#include <BlynkSimpleTinyGSM.h>
#include <Wire.h>
#include "ClosedCube_SHT31D.h"
#include <LiquidCrystal.h>

#define HUMI V2
#define TEMP V1
#define LEVEL V0
#define REAL_LEVEL V5

// Hardware Serial on Mega, Leonardo, Micro
#define SerialAT Serial

// You should get Auth Token in the Blynk App.
char auth[] = "cd66085a0c784370b4e3ba8f9686c376";

// Your GPRS credentials
char apn[]  = "v-internet";
char user[] = "";
char pass[] = "";

TinyGsm modem(SerialAT);
BlynkTimer timer;
ClosedCube_SHT31D sht35;

int fireLevel = 2,oldFireLevel = 2, count;
float humidity, temperature, I, errorCode;

//LCD16x2
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup()
{
  // Set GSM module baud rate
  SerialAT.begin(115200);
  lcd.begin(16, 2);
  welcomeLCD();
  Wire.begin();
  sht35.begin(0x44); // I2C address: 0x44 or 0x45
  sht35.periodicStart(SHT3XD_REPEATABILITY_HIGH, SHT3XD_FREQUENCY_10HZ);

  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  modem.restart();

  // Setup a function to be called every second
  timer.setInterval(1234L, oneSecondEvent);
  timer.setInterval(5000L, myTimerEvent);
  
  Blynk.begin(auth, modem, apn, user, pass);
  Blynk.syncAll();
}

void loop()
{
  Blynk.run();
  timer.run(); // Initiates BlynkTimer
}

void oneSecondEvent()
{
  getsResult(sht35.periodicFetchData());
}

void myTimerEvent()
{
  Blynk.virtualWrite(HUMI, humidity);
  Blynk.virtualWrite(TEMP, temperature);

  I = (humidity/20) + ((27-temperature)/10);
  if (I > 4) fireLevel = 1;
  else if (2.5 < I && I <= 4) fireLevel = 2;
  else if (2.0 < I && I <= 2.5) fireLevel = 3;
  else if (1.5 < I && I <= 2.0) fireLevel = 4;
  else if (I <= 1.5) fireLevel = 5;
  Blynk.virtualWrite(LEVEL, fireLevel);

  if(oldFireLevel != fireLevel)
  {
    oldFireLevel = fireLevel;
    Blynk.notify("ALARM");
  }
}
2

If you comment-out the Blynk notify then does it still go offline?

Why not use a flag to track that a notification has been sent, so you only notify once per high temperature event?

Pete.

3

Yep. My project works stably if I comment out “blynk.notify”.
I tried counting it.

if(oldFireLevel != fireLevel)
{
oldFireLevel = fireLevel;
Blynk.notify(“ALARM”);
counter++;
}

4

I have found the cause. I discovered that I cannot use <LiquidCrystal.h> with “Blynk.notify”