Blynk button

Need Help With My Project
1

im having some issues with my button widget. when i use the button in the app, it performs the way i want it to. im trying to blynk.virtualwrite(v6,LOW); from else where in my code to put the button in low state, it dos but the button dosnt do anything, not like it dos when you press it in the app.

belowis the code related to the problem im having.

BLYNK_WRITE(V1){  // Return pump button off 
 int value = param.asInt(); // Get State of Virtual Button, Return pump
  if (value == 1) {  // button ON
    // Turn as many pins/relays ON as you need
    digitalWrite(relay3Pin, LOW);
    timer.setTimeout(30000, relaysOn);
  } else {  // button OFF
    // Turn as many pins/relays OFF as you need
    digitalWrite(relay3Pin, HIGH);
    digitalWrite(relay4Pin, HIGH);
    Blynk.virtualWrite(V2, LOW);// Skimmer 
    digitalWrite(relay5Pin, HIGH);
    Blynk.virtualWrite(V3, LOW);// Reactor
    Blynk.virtualWrite(V6, LOW);// Wavemakers 
    Blynk.virtualWrite(V8, LOW);// Heating
    digitalWrite(relayPin, LOW);
    Blynk.virtualWrite(V9, LOW);// Cooling
    digitalWrite(relay2Pin, HIGH);
  }
}

this it the button im refering to

  BLYNK_WRITE(V6) // wavemakers
  { 
  wavesw = param.asInt(); // Get State of Virtual Button, Return pump
   if (wavesw == 1) {
     wavecontrol();
  }
  else
  {
    digitalWrite(wave1Pin,LOW);
    digitalWrite(wave2Pin,LOW);
  }
}

and the wave control here.

 void wavecontrol()
{
  if(wavesw == 1)
  
  Serial.print("\n");
  Serial.println(":: Executing check loop this minute");

  if ((CounterOn > 0) && (ledStatus == 0) && (wavesw == 1))
  {
      digitalWrite(wave1Pin,HIGH);   //write to pin to turn the LED on.
      digitalWrite(wave2Pin,LOW);
      Serial.print(": LED on\n");
      ledStatus = 1;
      CounterOff = 0;
  }

  if ((CounterOn > 0) && (ledStatus == 1))
      {
      CounterOn = (CounterOn - 1);
      }
      
  if ((CounterOff == 0) && (CounterOn == 0) && (ledStatus == 1)  && (wavesw == 1))
    {
      CounterOff = onsec;
    }

  if ((CounterOff > 0) && (ledStatus == 1))
  {
      digitalWrite(wave1Pin,LOW);   //write to pin to turn wave1 off
      digitalWrite(wave2Pin,HIGH);//write to pin to turn wave2 on
      Serial.print(": LED off\n");
      ledStatus = 0;
      CounterOn = 0;
   }
   
  if ((CounterOff > 0) && (ledStatus == 0))
      {
      CounterOff = (CounterOff - 1);
      }
      
  if ((CounterOff == 0) && (CounterOn == 0) && (ledStatus == 0))
    {
      CounterOn = offsec+1;
    }

}
2

To “control” a button, slider, etc. type widget from code you need to do two things… give it the value you want and sync it…

For example with your V6

Blynk.virtualwrite(V6,LOW);  // Set the button to OFF
Blynk.syncVirtual(V6);  // Trigger the associated function for V6 as if you had touched the widget in the App
3

Thank you so much it worked :slight_smile: I was beginning to over think it and maybe introduce some boolean values :rofl: your the man Gunner!

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