Arduino + Pixel + Vixen issue

[Kryten121]

I have got 2 strands of 50 pixel WS2811, firstly I found I was getting green when I had red in Vixen, but I found that issue and if you haven't found it here it is:

    // Let the FastLED library know how many pixels we will be addressing
    FastLED.addLeds<WS2811, DATA_PIN, GRB>(leds, num_leds);
    // Loop through each of the pixels and read the values for each color
    do {
      while(!Serial.available());
        leds[cnt].r = Serial.read();
      while(!Serial.available());
        leds[cnt].g = Serial.read();
      while(!Serial.available());
        leds[cnt++].b = Serial.read();
      } 
    while(--num_leds);
    // Tell the FastLED Library it is time to update the strip of pixels
    FastLED.show();
    // WOO HOO... We are all done and are ready to start over again!
    }
}

FastLED.addLeds<WS2811, DATA_PIN, GRB>(leds, num_leds); need to be FastLED.addLeds<WS2811, DATA_PIN, RGB>(leds, num_leds); to avoid reversing Red and Green

The issue I can't figure out is how to get intensity to work, does anyone know this? I have noticed that the code is missing FastLed.SetBrightness(xxx); to be able to accomplish this but this means that some effects in Vixen don't work as intended. Anyone have code to take care of that?

[MartinMueller2003]

The lines like this: "leds[cnt].r = Serial.read();" set the intensity for each color in the tri-color LED

[Kryten121]

I believe that actually sets the red value.

To break the line down, Leds is an array of 1 to 50 with values for R G and B. Be interested to see what Vixen actually sends down the USB pipe.

[MikeKrebs]

Vixen sends the value for r g and b. The "brightness" of red is whatever the value of r is. So 50% brightness is 128.