How to skip the first line and output the second? My question is related to my previous question.
These encoder programs outputs two line per pule/tick.

Here is the part of the code I want to use:

void loop()
{
    // Read the status of the inputs
    debouncerA.update();
    debouncerB.update();

    int8_t EncVariation = 0;

    if (debouncerA.rose())
    { // if input A changed from low to high, it was CW if B is high too
        EncVariation = (debouncerB.read()) ? 1 : -1;
    }
    else if (debouncerA.fell())
    { // if input A changed from high to low, it was CW if B is low too
        EncVariation = (debouncerB.read()) ? -1 : 1;
    }
    else if (debouncerB.rose())
    { // if input B changed from low to high, it was CCW if A is high too
        EncVariation = (debouncerA.read()) ? -1 : 1;
    }
    else if (debouncerB.fell())
    { // if input B changed from high to low, it was CCW if B is low too
        EncVariation = (debouncerA.read()) ? 1 : -1;
    }
//
  if (EncVariation != 0) {

        encoder0Pos = encoder0Pos + EncVariation;

        int degs = (encoder0Pos * 6) % 360 ;

        if(degs&lt;0){ degs = 360 + degs; }

        Serial.println (degs);
   }
}


For three inputs/ticks this outputs like:

6

12 

18

24

30

36

But I only need the second ones like:

12

24

36

How can I do that?
(I need it to send the relevant data do a PC.)

I spend so long time on it couldnt find any solution.
IF and only IF you want exactly what you have asked for which is alternate lines not to be output then this is a very crude and quick solution.

Outside of loop() add this declaration:

bool skipNextLine = true;  // true skips the odd lines, false skips even lines


And change the end of your code like this:

  if (EncVariation != 0) {
    encoder0Pos = encoder0Pos + EncVariation;
    int degrees = (encoder0Pos * 6) % 360 ;
    if(degrees&lt;0){ deg = 360 + degs; }
    if (!skipNextLine)
    {  // This will skip alternate lines
        Serial.println (deg);
        skipNextLine = true;
    }
    else
    {
        skipNextLine = false;
    }
  }