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RGBLEDBlender

RGB blending and color library created for the Arduino.

Written by Erik Sikich 2016

Download from Github here.

Overview of functions

  • Blend - Blends two colors together
  • Random - Blends randomly generated colors together
  • RandomCycle - Randomly cycles through a list of colors
  • Cycle - Cycles through a list of colors
  • Update - Call to update color
  • Hold - Holds a color
  • TurnOff - Turns off the LED
  • GetColor - Returns current color
  • SetPins -Sets RGB pins

Usage

Requires 3 PWM pins.

To blend arbitrary colors together, call the Blend() fuction once and then repeatedly call Update()

my_blender.Blend(_RED, _YELLOW, blend_time);

uint32_t blend_time = 1000;
uint32_t done = millis() + blend_time;

while(done > millis()){
my_blender.Update();
}

For Random(), RandomCycle(), and Cycle(), just repeatedly call the function.

Color color_list[6] = {_RED, _ORANGE, _YELLOW, _GREEN, _BLUE, _PURPLE};

while(true){
my_blender.RandomCycle(color_list, 6, 1000);
}

Color math and assignments

Colors can be added, subtracted, divided and multiplied either by each other or constants.

Color my_color = {10, 15, 20};
Color my_color2 = {1, 2 ,3};
my_color *= 2;
//my_color would now be == {20, 30, 40}

my_color += my_color2;
//my_color would now be == {21, 32, 43}

NOTE: Be vigilant when doing this, as the Color struct is made of int16_t's. Be sure to check your values as writing values < 0 or > 255 will cause under/overflow issues and you will not get the colors you expect.

Pre-defined color definitions

Pulled from here.