Help me to rotating this fan

[ErfanDL]

@Gunner Hi gunner. can you help me to rotating this fan ?

I’m trying this cod but only showing one image. the V3 is image widget

BLYNK_WRITE(V9)
{
  int pinValue = param.asInt();
  if (pinValue == 1)
  {
    digitalWrite(Relay_9, LOW);
    Blynk.virtualWrite(V3,1);
    Blynk.virtualWrite(V3,2);
  }
  else if (pinValue == 0)
  {
    digitalWrite(Relay_9, HIGH);
    Blynk.virtualWrite(V3,3);
  }
}

[Gunner]

I moved your issue into your own topic.

Blynk.virtualWrite(V3,1);
Blynk.virtualWrite(V3,2);

I only see two distinct images… and as far as the “ON” side, those two virtual prints would happen so fast that you would only see the image #2 anyhow.

If you want to have the “.gif” (pronounced giraffe ) appearance, then you would need short timers alternating back and forth… much like my LED example…

C++ Blynk - Code Examples for Basic Tasks (Work in Progress)

#25 - Das Timed Blinkin’ LED… Without any delay() - AKA Timerception This is simply just two nested Lambda functions using BlynkTimer and two different timer types to flash a Virtual LED ON for 1/2 second and Off for 1/2 second… If this is placed in the void setup() it just repeats in the background… marquee style. LED Widget set to V0 timer.setInterval(1000L, []() { // 1st Timed Lambda Function - Turn ON LED every second (repeating) Blynk.virtualWrite(V0, 255);…

[ErfanDL]

thanks gunner. I tried your code. but it’s very fast flashing the fans and not rotating. I’m set the timer to 1000L

[ErfanDL]

@Gunner gunner thanks. I’m change the time to 2000L its working.

[Gunner]

You need to adjust both timers to your own needs… but they also need to be in sequence with each other typically 2nd is 50% of 1st

FYI, I have not actually tried rapidly changing any images yet… but @Blynk_Coeur is an expert at it

[Blynk_Coeur]

ah ah.
you are my teacher @Gunner.
don’t forget that.

[gab.lau]

why not use the property “rotation” ? with only one image and one timer?

//Rotation property
Blynk.setProperty(V3, "rotation", 90); //0-360 degrees

//Scale property
Blynk.setProperty(V0, "scale", 30); //0-100%

//Opacity property
Blynk.setProperty(V0, "opacity", 50); //0-100%

[Blynk_Coeur]

@ErfanDL @Gunner

[Toro_Blanco]

Any chance you could share the code?

[Blynk_Coeur]

@Toro_Blanco

int Speed, R;

void setup()
{
timer.setInterval(100, Fan);
....
}

BLYNK_WRITE(V27) {//slider 0 to 4
  Speed = param.asInt();
}

void Fan() {
  R = R + (10*Speed);
  if (R >= 360) {
    R = 1;
  }
 Blynk.setProperty(V0, "rotation", R); //0-360 degrees

[Blynk_Coeur]

[Gunner]

Fantastic job @Blynk_Coeur

[Blynk_Coeur]

i know it isn’t perfect, I realized it in 5 mn.
mine has a variable speed, not yours.

[Blynk_Coeur]

thank you @Gunner
this can be improved, but it depends on the speed of rotation and the gif image used.
@kotelmach has the solution:
do not use variable speed, it’s better.
what a pity !

[Gunner]

@Blynk_Coeur I really like your use of the rotation properties command… looks more than smooth enough , considering you have then converted it to a gif for forum presentation. I didn’t even think of those set property features… I would have been rapidly changing 2-3 images back and forth

[ErfanDL]

How to set image name ? in this code the R is your image name ?
thanks

[Blynk_Coeur]

no, R is the rotation degrees

[ErfanDL]

but where is image name ?

[Blynk_Coeur]

the name is not necessary

just virtual PIN is needed

[ErfanDL]

Ahaa. OK but I want when the fan turning off the fan color changed to red color. is that possible with one image widget ?