LED RGB

O código do Sketch está aqui:

/*
 Led RGB e Display LCD : HSB loop
 
 Makes an RGB led to loop on all colors and displays
 the RGB values into an LCD display. The color loop
 is achieved varying the Hue value from 0 to 255 and
 converting the HSB value into RGB values.
 
 The circuit:
  * LCD RS pin to digital pin 13
  * LCD Enable pin to digital pin 12
  * LCD D4 pin to digital pin 5
  * LCD D5 pin to digital pin 4
  * LCD D6 pin to digital pin 3
  * LCD D7 pin to digital pin 2
  * 10K resistor:
  * ends to +5V and ground
  * wiper to LCD VO pin (pin 3)
 
  * RGB Led Red pin to PWM pin 9
  * RGB Led Green pin to PWM pin 10
  * RGB Led Blue pin to PWM pin 11
  * RGB Led GND pin to GND
  * 220 resistors:
  * on each led's color pin
 
 Based on the Arduino Liquid Crystal tutorial and
 the HSBtoRGB function from Paul V. (Arduino Forum).
  * http://www.arduino.cc/en/Tutorial/LiquidCrystal
  * http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1235225449/13#13