Added new example

examples/RainbowLedbar/RainbowLedbar.ino

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+/*
+ * This code was created by dominpiano.
+ * You can modify it as you want.
+ * ONE IMPORTANT THING
+ * This was created for LedBar from Light4Me, using channel C, (basically you have to have red on channel 1, green on channel 2,
+ * and blue on channel 3. Optionally you can have master on channel 4, then look down to DmxSimple.write() functions.
+ * 
+ * 
+ */
+
+#include <DmxSimple.h>
+
+float counter = 0;
+int red, green, blue;
+
+float master = 100; //change this from 0 to 100 to get different brightness
+
+void setup() {
+
+}
+
+void loop() {
+  setLedColorHSV(counter, 1, 1); //every single color from a whole circle (full saturation)
+  if(counterColor >= 359){
+    counter = 0;
+  }else{
+    counter++;
+  }
+
+  DmxSimple.write(1, red * (master/100));
+  DmxSimple.write(2, green * (master/100));
+  DmxSimple.write(3, blue * (master/100));
+  /*
+   * optionally if u have channel 4 for master go for this:
+   * DmxSimple.write(1, red);
+     DmxSimple.write(2, green);
+     DmxSimple.write(3, blue);
+     DmxSimple.write(4, master);
+
+
+     of course you have to then set master on top to be between 0 and 255
+   */
+  delay(30); //change this to change speed of the animation
+
+}
+
+void setLedColorHSV(int h, double s, double v) {
+  //this is the algorithm to convert from RGB to HSV
+  double r=0; 
+  double g=0; 
+  double b=0;
+
+  double hf=h/60.0;
+
+  int i=(int)floor(h/60.0);
+  double f = h/60.0 - i;
+  double pv = v * (1 - s);
+  double qv = v * (1 - s*f);
+  double tv = v * (1 - s * (1 - f));
+
+  switch (i)
+  {
+  case 0: //rojo dominante
+    r = v;
+    g = tv;
+    b = pv;
+    break;
+  case 1: //verde
+    r = qv;
+    g = v;
+    b = pv;
+    break;
+  case 2: 
+    r = pv;
+    g = v;
+    b = tv;
+    break;
+  case 3: //azul
+    r = pv;
+    g = qv;
+    b = v;
+    break;
+  case 4:
+    r = tv;
+    g = pv;
+    b = v;
+    break;
+  case 5: //rojo
+    r = v;
+    g = pv;
+    b = qv;
+    break;
+  }
+
+  //set each component to a integer value between 0 and 255
+  red = constrain((int)255*r,0,255);
+  green = constrain((int)255*g,0,255);
+  blue = constrain((int)255*b,0,255);
+
+
+
+}