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HSB RGB Arduino Color Library

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Here is another arduino library to handle Hue, Saturation, and Brightness as well as Red, Green, and Blue color models.

Screens speak of color in terms of 3 channels: Red, Green and Blue. Humans tend to think of colors in 3 channels too, but the channels that seem more natural usually are Hue, Saturation and Brightness. Here is an arduino color library so you too can specify colors by their hue! We use this code in our RGB Rainbow Sun and HSB RGB Sketcher . If you need help learning how to install libraries in arduino check out this thorough Adafruit tutorial. We use this library to draw colors on LCD screens, for example see the HSB RGB Sketcher Tutorial and onto RGB LEDs in the Sun Kit .

Images

Arduino Color Icon

Arduino Color Icon

Color Icon!

Color Icon!

Video

Color Wheel on LEO Gamer

Here we are using the Arduino color code to display a color wheel on the LEO Gamer .

Code

Color Code Example

This code show a basic example of using the color library to make a rainbow appear on RGB LEDs. By varying the hue the rainbow function moves across the whole visible color spectrum.

Download File

/* LucidTronix HSB RGB Color Library * For instructions, details and schematic, See: * http://www.lucidtronix.com/tutorials/19 */#include // these are the pins connected to the RGB LEDsint leds[] = {9,10,11}; Color cur_color = Color(1,1,1);float hue = 0;// run once, when the sketch startsvoid setup()                    {  for(int i = 0 ; i < 3; i++ ){    pinMode(leds[i], OUTPUT);    digitalWrite(leds[i], LOW);    delay(300);     digitalWrite(leds[i], HIGH);    delay(300);  }}// run over and over againvoid loop()                   {  display_color(cur_color);  rainbow();}void rainbow(){  hue += 0.06;  if ( hue >=1 ) hue = 0;  float sat = 0.8;  float val = 0.2;  cur_color.convert_hcl_to_rgb(hue,sat,val);  display_color(cur_color);  delay(20);}void display_color(Color c){  analogWrite(leds[0], c.red);  analogWrite(leds[1], c.green);  analogWrite(leds[2], c.blue);  delay(100);}

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