Hello, I am updating my wife's Christmas list (11,000 pcs ws2811 / 2812 around the house). She wants a color close to "edison", a very hot white that is not completely yellow.
But I can not hit the color, can you help?
It is RGBCW type (red, green, blue, cold white)
Regards Jan
You can find here the list of predefined colors in the fastled library
Or you can type "RGB color picker" in google and try to create the desired color. It will give you the RGB or HSV values that you can use with your preferred LED library
Example :
She wants a color close to "edison", a very hot white that is not completely yellow.
Contrary to popular belief you can not get "any colour" from a array of RGBW LEDs. Some simply do not map in the colour space. Also, given that your perception of colour depends a lot on the colour of other things around it, this is not an exact science.
I think the best bet would be if you build a system with four pots, each one controlling a different element of the colour, and then adjust them until you get the colour you want in the actual area you want. Get the Arduino to print out the four elements as you adjust it.
Why choose 2811/2812 LEDs if they will all be the same colour? The whole point of this type of led is that you have individual control over the colour of each led.
Are ws2811/2812 even available in RGBW? I thought they were RGB only.
Why not use non-addressable strips. They should be considerably cheaper. You can control them with MOSFETs, and potentially have finer control over the colour, by using 10 or 12-bit pwm instead of the standard 8-bit pwm on most Arduino (and ws2811/2812) which will give 1024 or 4096 levels of adjustment instead of only 256 levels.
