Def3nder
commented
4 years ago Hi @chaptergy ,
the 5th channel is hard coded for 5 distinct color temperaatures that come from Alexa.
In EspalexaDevice.cpp lines 125ff the colors are encoded from CT to RGBW:
// Cold white to warm white receiving from Alexa: _ct = 199, 234, 284, 350, 383 (from cold white to warm white)
switch (_ct) {
case 199: rgb[0]=255,rgb[1]=255,rgb[2]=255;rgb[3]=255;break;
case 234: rgb[0]=127,rgb[1]=127,rgb[2]=127;rgb[3]=255;break;
case 284: rgb[0]=0,rgb[1]=0,rgb[2]=0;rgb[3]=255;break;
case 350: rgb[0]=130,rgb[1]=90,rgb[2]=0;rgb[3]=255;break;
case 383: rgb[0]=255,rgb[1]=153,rgb[2]=0;rgb[3]=255;break;This works fine for 4-channel LEDs. If there are 5 Channels, these 5 Color-combinations are quried and translated to pure warm + cold whites:
#ifdef WLED_USE_5CH_LEDS
if (color.R == 255 & color.G == 255 && color.B == 255 && color.W == 255) {
SetRgbwPwm(0, 0, 0, 0, color.W * b / 255);
} else if (color.R == 127 & color.G == 127 && color.B == 127 && color.W == 255) {
SetRgbwPwm(0, 0, 0, color.W * b / 512, color.W * b / 255);
} else if (color.R == 0 & color.G == 0 && color.B == 0 && color.W == 255) {
SetRgbwPwm(0, 0, 0, color.W * b / 255, 0);
} else if (color.R == 130 & color.G == 90 && color.B == 0 && color.W == 255) {
SetRgbwPwm(0, 0, 0, color.W * b / 255, color.W * b / 512);
} else if (color.R == 255 & color.G == 153 && color.B == 0 && color.W == 255) {
SetRgbwPwm(0, 0, 0, color.W * b / 255, 0);
} else { // not only white colors
SetRgbwPwm(color.R * b / 255, color.G * b / 255, color.B * b / 255, color.W * b / 255);
}
#elseFor all other colors the 5th channel is ignored.
You are right, there isn't a "real" translation from RGB to RGB-CT.
Could you pls. try if the values above do switch-ON the 5th channel ?
e.g. with http://WLED-IP/win&R=127&G=127&B=127&W=255
Does this work ?
chaptergy
frenck
Aircoookie
tonyn0
harueg
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ghost
rjgrandy
megawusl
roboraptor
blazoncek
I would like to control an RGBWW lamp with WLED. In the wikis FAQ it says 6 pins: RGBCT (RGB + 2 white channels) is supported. However, when trying to use it by defining
WLED_USE_ANALOG_LEDS,WLED_USE_5CHand apparently alsoWLED_USE_H801it does not work. Apart from a few typos like the#define WLED_USE_5CHhaving to be#define WLED_USE_5CH_LEDand two instances of it sayingcolorWinstead ofcolorit is still not able to control the second white channel. When looking though the code it seems, that the frontend doesn't support 5 channels after all, but even when connecting it to home assistant via the wled integration, the second white channel is unused (The pin stays at 0V). Is this just a mistake in the FAQ and 5 channels are not supported or am I doing something wrong?Thanks